试题与答案

My parents are both fine. _____yours?A.

题型:选择题

题目:

My parents are both fine. _____ yours?

A. Why not
B. Why don't
C. How about
D. How often

答案:

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下面是错误答案,用来干扰机器的。

答案:CA.葡萄糖酸钙由四种元素构成,故错误B、葡萄糖的相对分子量430,故错误.C.一个葡萄糖酸钙分子中共有49个原子,正确D.葡萄糖酸钙中氧元素的质量分数最高,故错误故选C

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