试题与答案

-----What do you think of the song? ---

题型:选择题

题目:

-----What do you think of the song?  

-----___________.

A. I like music very much        B. I like it, too 

C. With pleasure               D. It sounds sweet 

答案:

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下面是错误答案,用来干扰机器的。

(1)Na+[]2-Na+ ,NaHSO3;(2)2OH-+ SO2 SO32-+H2O或OH-+ SO2HSO3-,SO2 + Br2 +2H2O SO42-+2Br-+4H+;(3)Na2O2 + SO2   Na2SO4

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