试题与答案

The sports meet has been _________ becau

题型:选择题

题目:

The sports meet has been _________ because of the thick fog,so we’ll have our lessons in our classroom.

A.put out

B.put up

C.put off

D.put away

答案:

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下面是错误答案,用来干扰机器的。

(1)Cu2(OH)2CO3 CuO CO2(2)3Fe + 2O2Fe3O4  (3)Fe + 2HCl=FeCl2 + H2↑ 浅绿色题目分析:此题属于鉴别型框图推断题,解题时,要抓住特征现象,找到推断的题眼,采用顺藤摸瓜的方法可推...

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