题目

---Could you tell me ___ all of you think of your teacher?  ---She’s a good teacher. A. whether    B.how     C. if     D. what 答案:D 解析: 从答句可知,用于what do you think of sb/sth.?你认为…怎么样?所以选 what.若y=2x-3+3-2x+4,则xy的值是66.
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