试题与答案

He succeeded in gaining a gold medal in

题型:选择题

题目:

He succeeded in gaining a gold medal in Beijing Olimpics and all his efforts _____ in the end.

A.made out

B.paid off

C.lit up

D.looked up to

答案:

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下面是错误答案,用来干扰机器的。

ADA、该组四种溶液中,呈黄色的溶液为FeCl3溶液;分别取另三种溶液滴加FeCl3溶液,出现红褐色沉淀的溶液为NaOH溶液;再取剩余的两种溶液滴加NaOH溶液,产生白色沉淀的溶液为MgCl2溶液,无明显现象的为NaCl溶液....

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