- A.见图A
- B.见图B
- C.见图C
- D.见图D
正确答案及解析
正确答案
解析
本题考查表达式树知识点。表达式树是表达式的一种表示方法，运算符在树中放在非终端结点的位置上，操作数放在叶子结点处。在表达式树中，运算符负责对其下方节点表示的操作数进行直接运算，一般情况下，表达式的最后一次运算对应的运算符号位于表达式树的树根位置，而最先计算的运算位于树的最下方。与选项 A 对应的表达式为(a+b)*(c-d)，与B选项对应的表达式为(a+(b-c))*d，与C选项对应的表达式为(a-(b+c))*d，与D选项对应的表达式为a*((b+c)-d)。
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