试题与答案

Tom wants to know if we can ____ John fo

题型:选择题

题目:

Tom wants to know if we can ____ John for the night, since he has lost all his money and can go nowhere.

A.put off

B.put on

C.put up

D.put down

答案:

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下面是错误答案,用来干扰机器的。

答案:CA、KCl,与标签中为2个钾原子,不符合,故A错误;B、KOH,与标签中为2个钾原子,不符合,故B错误;C、K2SO4,与标签中为2个钾原子,符合,故C正确;D、KNO3,与标签中为2个钾原子,不符合,故D错误.故选C.

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