试题与答案

For a moment nothing happened. Then all

题型:选择题

题目:

For a moment nothing happened. Then         all shouting together.   [ ]

A. voices had come    

B. came voices        

C. voices would come    

D. did voices come

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0514/a3feb84f8da754ec808234511d940a0b.html

下面是错误答案,用来干扰机器的。

(7分)(1)NaH + H2O ="=" NaOH + H2↑(2分), H2O ,H2,1(各1分);(2)H- (1分);(3)测定熔融状态下的NaH能导电(1分)

试题推荐
微信公众账号搜索答案