I watch movies ____, even when I'm busy with my lessons.（　　）

I saw him ____in the bed.（　　）

It's very important ____ me to learn English hard.（　　）

Some old people, ____ children are away working in big cities, felt lonely.（　　）

--Have you been visited by the teacher this week?（　　）

--Yes, I remember ____ this Monday.

Lacking of books, the children in the poor areas read books ____.（　　）

You couldn't be ____ when you drive a car.（　　）

Is this the ____ that you didn't do your homework?（　　）

My money isn't in my purse. Where ____ I have put it?（　　）

This class ____ 20 boys and 30 girls.（　　）

Henry will not meet you tonight because ____.（　　）

The girl, which is ____ the subway girl, always sings songs in the subway.（　　）

Do you mind my ____ the window?（　　）

A horrible situation will ____ when the environment is polluted badly.（　　）

The box is ____ to keep all your books, therefore just buy this one.（　　）

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Scientists who study the brain have found out a great deal about how we learn. They have 　21　that babies learn much more from the sights and sounds around them than we 　22　before. You can help your baby by taking advantage of her hunger to learn.

　　From the 　23　 beginning, babies try to imitate the 　24　 they hear us make. They “read” the 　25　 on our faces and our movements. That is 　26　 it is so important to talk, sing and smile to your child. Hearing you talk is your baby's first 　27　 toward becoming a reader, because it 　28　 her to love language and to learn words.

　　As your child grows older, 　29　 talking with her. Ask her about the things she does. Ask her about the events and people in the story you 　30　 together. Let her know you are carefully 　31　 what she says. By keeping her in 　32　 and listening, you are 　33　 encouraging your child to think as she speaks.　34　,you are showing that you respect her knowledge and her ability to 　35　 learning.

____.

Man can go on increasing his numbers at the present rate. In the next 30 years man will face a period of crisis. Some experts believe that there will be a widespread food shortage. Other experts think that this is too pessimistic, and that man can prevent things from getting worse than they are now. But remember that two-thirds of the people in the world are undernourished or starving now.

　　One thing that man can do is to limit the number of babies born. The need for this is obvious, but it is not easy to achieve. People have to be persuaded to limit their families. In the countries of the population explosion, many people like big families. The parents think that this brings a bigger income for the family and ensures there will be someone in the family who will look after them in old age.

　　Several governments have adopted birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an exception. The Japanese adopted a birth control policy in 1948. People were encouraged to limit their families. The birth rate fell from 34.3 per thousand per year to about 17 per year at present.

According to the passage, if we go on increasing the population, we will face ____.（　　）

Man can go on increasing his numbers at the present rate. In the next 30 years man will face a period of crisis. Some experts believe that there will be a widespread food shortage. Other experts think that this is too pessimistic, and that man can prevent things from getting worse than they are now. But remember that two-thirds of the people in the world are undernourished or starving now.

　　One thing that man can do is to limit the number of babies born. The need for this is obvious, but it is not easy to achieve. People have to be persuaded to limit their families. In the countries of the population explosion, many people like big families. The parents think that this brings a bigger income for the family and ensures there will be someone in the family who will look after them in old age.

　　Several governments have adopted birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an exception. The Japanese adopted a birth control policy in 1948. People were encouraged to limit their families. The birth rate fell from 34.3 per thousand per year to about 17 per year at present.

It is difficult to carry out birth control because ____.（　　）

Man can go on increasing his numbers at the present rate. In the next 30 years man will face a period of crisis. Some experts believe that there will be a widespread food shortage. Other experts think that this is too pessimistic, and that man can prevent things from getting worse than they are now. But remember that two-thirds of the people in the world are undernourished or starving now.

　　One thing that man can do is to limit the number of babies born. The need for this is obvious, but it is not easy to achieve. People have to be persuaded to limit their families. In the countries of the population explosion, many people like big families. The parents think that this brings a bigger income for the family and ensures there will be someone in the family who will look after them in old age.

　　Several governments have adopted birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an exception. The Japanese adopted a birth control policy in 1948. People were encouraged to limit their families. The birth rate fell from 34.3 per thousand per year to about 17 per year at present.

The “population”explosion can be explained like this: _____.（　　）

Man can go on increasing his numbers at the present rate. In the next 30 years man will face a period of crisis. Some experts believe that there will be a widespread food shortage. Other experts think that this is too pessimistic, and that man can prevent things from getting worse than they are now. But remember that two-thirds of the people in the world are undernourished or starving now.

　　One thing that man can do is to limit the number of babies born. The need for this is obvious, but it is not easy to achieve. People have to be persuaded to limit their families. In the countries of the population explosion, many people like big families. The parents think that this brings a bigger income for the family and ensures there will be someone in the family who will look after them in old age.

　　Several governments have adopted birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an exception. The Japanese adopted a birth control policy in 1948. People were encouraged to limit their families. The birth rate fell from 34.3 per thousand per year to about 17 per year at present.

Birth control policies have been adopted in some countries with successful results in ____.（　　）

There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transaction may take place via barter or money exchange. In a barter economy, goods such as automobiles, shoes and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and-services are bought or sold for money.

　　An alternative for the market system is administrative control by some agency over all transactions. This agency will issue edicts (orders) or commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person's place within the economic system is fixed by parentage (origin),religion,and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste (social class) may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. A stagnant (unchanging) society may result.

What is the main purpose of the passage?（　　）

There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transaction may take place via barter or money exchange. In a barter economy, goods such as automobiles, shoes and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and-services are bought or sold for money.

　　An alternative for the market system is administrative control by some agency over all transactions. This agency will issue edicts (orders) or commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person's place within the economic system is fixed by parentage (origin),religion,and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste (social class) may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. A stagnant (unchanging) society may result.

In the second paragraph, the word “real” in “real goods” could best be replaced by which of the following?（　　）

There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transaction may take place via barter or money exchange. In a barter economy, goods such as automobiles, shoes and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and-services are bought or sold for money.

　　An alternative for the market system is administrative control by some agency over all transactions. This agency will issue edicts (orders) or commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person's place within the economic system is fixed by parentage (origin),religion,and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste (social class) may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. A stagnant (unchanging) society may result.

According to the passage, a barter economy can lead to ____.（　　）

There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transaction may take place via barter or money exchange. In a barter economy, goods such as automobiles, shoes and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and-services are bought or sold for money.

　　An alternative for the market system is administrative control by some agency over all transactions. This agency will issue edicts (orders) or commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person's place within the economic system is fixed by parentage (origin),religion,and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste (social class) may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. A stagnant (unchanging) society may result.

According to the passage, who has the greatest degree of control in an administered system?（　　）

Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation. But their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

　　Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage－a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed （畸形的） children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo crew accumulated large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

According to the first paragraph, the atmosphere is essential to man in that ____.（　　）

Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation. But their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

　　Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage－a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed （畸形的） children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo crew accumulated large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

We can infer from this passage ____.（　　）

Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation. But their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

　　Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage－a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed （畸形的） children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo crew accumulated large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

From the passage we can know ____.（　　）

Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation. But their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

　　Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage－a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed （畸形的） children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo crew accumulated large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

The best title for this passage would be ____.（　　）

Danny was just tired about the way things were going. His mom came to the school and went on and on talking about Rick Jackson. It seemed that she would never stop talking. “Somebody's got to stop that boy!” she was shouting, “Rick's troubling everybody in the neighborhood. And he loves to pick on little boys like Danny.”

　　Mrs. Green, Danny's teacher, was concerned a lot. “I didn't know that Danny was being picked on,” she answered．“He's never said anything about this to me!” Mrs. Green looked at Danny. “How long has this been going on?” She asked. Danny could only shake his head and look at the floor. He knew if he said a word about this, he would have trouble after school.

　　Danny hadn't said anything about the problem because he wanted to play with the boys in the neighborhood. After all, most of them were nice to him He hated to leave the just because of Rick. Maybe the time had come to find new friends. He felt it hard to make up his mind.

What we can learn from the passage is that____.（　　）

Danny was just tired about the way things were going. His mom came to the school and went on and on talking about Rick Jackson. It seemed that she would never stop talking. “Somebody's got to stop that boy!” she was shouting, “Rick's troubling everybody in the neighborhood. And he loves to pick on little boys like Danny.”

　　Mrs. Green, Danny's teacher, was concerned a lot. “I didn't know that Danny was being picked on,” she answered．“He's never said anything about this to me!” Mrs. Green looked at Danny. “How long has this been going on?” She asked. Danny could only shake his head and look at the floor. He knew if he said a word about this, he would have trouble after school.

　　Danny hadn't said anything about the problem because he wanted to play with the boys in the neighborhood. After all, most of them were nice to him He hated to leave the just because of Rick. Maybe the time had come to find new friends. He felt it hard to make up his mind.

When Danny's mother came for Mrs. Green, the matter was now ____ to Mrs. Green.（　　）

Danny was just tired about the way things were going. His mom came to the school and went on and on talking about Rick Jackson. It seemed that she would never stop talking. “Somebody's got to stop that boy!” she was shouting, “Rick's troubling everybody in the neighborhood. And he loves to pick on little boys like Danny.”

　　Mrs. Green, Danny's teacher, was concerned a lot. “I didn't know that Danny was being picked on,” she answered．“He's never said anything about this to me!” Mrs. Green looked at Danny. “How long has this been going on?” She asked. Danny could only shake his head and look at the floor. He knew if he said a word about this, he would have trouble after school.

　　Danny hadn't said anything about the problem because he wanted to play with the boys in the neighborhood. After all, most of them were nice to him He hated to leave the just because of Rick. Maybe the time had come to find new friends. He felt it hard to make up his mind.

Danny didn't say anything about the matter to Mrs. Green because ____.（　　）

Danny was just tired about the way things were going. His mom came to the school and went on and on talking about Rick Jackson. It seemed that she would never stop talking. “Somebody's got to stop that boy!” she was shouting, “Rick's troubling everybody in the neighborhood. And he loves to pick on little boys like Danny.”

　　Mrs. Green, Danny's teacher, was concerned a lot. “I didn't know that Danny was being picked on,” she answered．“He's never said anything about this to me!” Mrs. Green looked at Danny. “How long has this been going on?” She asked. Danny could only shake his head and look at the floor. He knew if he said a word about this, he would have trouble after school.

　　Danny hadn't said anything about the problem because he wanted to play with the boys in the neighborhood. After all, most of them were nice to him He hated to leave the just because of Rick. Maybe the time had come to find new friends. He felt it hard to make up his mind.

The underlined word “gang” in the reading passage means ____.（　　）

All the housewives who went to the new supermarket had one great ambition: to be the lucky customer who did not have to pay for her shopping. For this was what the notice just inside the entrance promised. It said: “Remember, once a week, one of our customers gets free goods. This May Be Your Lucky Day!”

　　For several weeks Mrs. Edwards hoped, like many of her friends, to be the lucky customer. Unlike her friends, she never gave up hoping. The cupboards in kitchen were full of things which she did not need．Her husband tried to advise her against buying things but failed. She dreamed of the day when the manager of the supermarket would approach her and say, “Madam, this is Your Lucky Day. Everything in your basket is free.”

　　One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy any tea. She dashed back to the supermarket, got the tea and went towards the cash-desk. As she did so, she saw the manager of the supermarket approach her. “Madam,” he said, holding out his hand, “I want to congratulate you! You are our lucky customer and everything you have in your basket is free!”

The housewives learnt about the offer of free goods ____.（　　）

All the housewives who went to the new supermarket had one great ambition: to be the lucky customer who did not have to pay for her shopping. For this was what the notice just inside the entrance promised. It said: “Remember, once a week, one of our customers gets free goods. This May Be Your Lucky Day!”

　　For several weeks Mrs. Edwards hoped, like many of her friends, to be the lucky customer. Unlike her friends, she never gave up hoping. The cupboards in kitchen were full of things which she did not need．Her husband tried to advise her against buying things but failed. She dreamed of the day when the manager of the supermarket would approach her and say, “Madam, this is Your Lucky Day. Everything in your basket is free.”

　　One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy any tea. She dashed back to the supermarket, got the tea and went towards the cash-desk. As she did so, she saw the manager of the supermarket approach her. “Madam,” he said, holding out his hand, “I want to congratulate you! You are our lucky customer and everything you have in your basket is free!”

Which statement is TRUE?（　　）

All the housewives who went to the new supermarket had one great ambition: to be the lucky customer who did not have to pay for her shopping. For this was what the notice just inside the entrance promised. It said: “Remember, once a week, one of our customers gets free goods. This May Be Your Lucky Day!”

　　For several weeks Mrs. Edwards hoped, like many of her friends, to be the lucky customer. Unlike her friends, she never gave up hoping. The cupboards in kitchen were full of things which she did not need．Her husband tried to advise her against buying things but failed. She dreamed of the day when the manager of the supermarket would approach her and say, “Madam, this is Your Lucky Day. Everything in your basket is free.”

　　One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy any tea. She dashed back to the supermarket, got the tea and went towards the cash-desk. As she did so, she saw the manager of the supermarket approach her. “Madam,” he said, holding out his hand, “I want to congratulate you! You are our lucky customer and everything you have in your basket is free!”

Mrs. Edwards' husband tried to ____.（　　）

All the housewives who went to the new supermarket had one great ambition: to be the lucky customer who did not have to pay for her shopping. For this was what the notice just inside the entrance promised. It said: “Remember, once a week, one of our customers gets free goods. This May Be Your Lucky Day!”

　　For several weeks Mrs. Edwards hoped, like many of her friends, to be the lucky customer. Unlike her friends, she never gave up hoping. The cupboards in kitchen were full of things which she did not need．Her husband tried to advise her against buying things but failed. She dreamed of the day when the manager of the supermarket would approach her and say, “Madam, this is Your Lucky Day. Everything in your basket is free.”

　　One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy any tea. She dashed back to the supermarket, got the tea and went towards the cash-desk. As she did so, she saw the manager of the supermarket approach her. “Madam,” he said, holding out his hand, “I want to congratulate you! You are our lucky customer and everything you have in your basket is free!”

Why did Mrs. Edwards went back to the supermarket?（　　）

Henry: How are you getting along with your translation?

Alice: 　56　.

Bill: How's your mother feeling these days?

Nancy: 　57　.

Fred: Do you like a cup of coffee or tea?

Jane: 　58　.

George: Shall we do it now?

Mary: 　59　.

Pat: When will you go?

Ann: 　60　.

假如你是王刚(Wang Gang)，给朋友李明(Li Ming)写一封祝贺信，祝贺他获得复旦大学计算机科学硕士学位，并祝他在今后的学习和研究方面取得成功。