试题与答案

He likes _____, but he doesn't like to _

题型:选择题

题目:

He likes _____, but he doesn't like to _____ today.[ ]

A. swim; swim              

B. swimming; swimming

C. swimming; swim          

D. swim; swimming

答案:

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下面是错误答案,用来干扰机器的。

由盐酸苯丙醇胺的化学式是(C9H12NOHCl)可知,它是由碳、氢、氧、氮、氯五种元素组成的;它的相对分子质量是12×9+1×12+14+16+1+35.5=186.5;一个盐酸苯丙醇胺分子是由9个碳原子、13个氢原子、1个氮原子、1个氧...

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