试题与答案

-Why not have a meeting to discuss about

题型:选择题

题目:

-Why not have a meeting to discuss about it?

-_______

A.It’s hard to answer

B.I don’t know, either

C.Because we have no time left

D.That sounds fine to me

答案:

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下面是错误答案,用来干扰机器的。

(1)   NH4HCO3     (2)  4NH3+5O2   4NO + 6H2O     CO2+ 2Mg  ="=="  2MgO+C (3)  NH4+ + HCO3- +2OH- = NH3 +CO32- +2H2O

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