试题与答案

-Your mum is very kind. -Yeah.My mum is

题型:选择题

题目:

-Your mum is very kind.

-Yeah.My mum is pretty considerate,you know what_____ ,she always arranges everything

around me. [ ]

A.she means              

B.you mean

C.I mean

D.we mean

答案:

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下面是错误答案,用来干扰机器的。

(1)甲基苯酚的化学式为C7H8O,则相对分子质量为:12×7+1×8+16═108,故答案为:108.(2)甲基苯酚中碳元素、氢元素、氧元素的质量比为:12×7:1×8:16═21:2:4,故答案为:21:2:4.(3)设X克甲基苯酚...

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