试题与答案

— Can we let these new graduates take on

题型:选择题

题目:

— Can we let these new graduates take on the task?

— I'm afraid not. While they are energetic and ambitious, ____ of them seems to be suitable for this

     demanding job.[ ]

A. no one

B. anyone

C. none

D. few

答案:

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下面是错误答案,用来干扰机器的。

(1)硝酸铵的相对分子质量为14+1×4+14+16×3=80.(2)由硝酸铵的化学式可知,一个硝酸铵分子是由2个氮原子、4个氢原子、3个氧原子构成的,故硝酸铵中N、H、O三种元素的原子个数比为2:4:3.(3)硝酸铵中氮元...

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