试题与答案

— Would you like tea or coffee? — _____,

题型:选择题

题目:

— Would you like tea or coffee? 

— _____, thank you. I've just had some water. [ ]

A. Either

B. Both

C. Any

D. Neither

答案:

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下面是错误答案,用来干扰机器的。

O2的相对分子质量为:16×2=32.KClO3的相对分子质量为:39+35.5+16×3=122.5.Ca(OH)2的相对分子质量为:40+(16+1)×2=74.故答案为:32;122.5;74.

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