试题与答案

You might as well expect a river to flow

题型:选择题

题目:

You might as well expect a river to flow backward ____ us carrying out the plan.

A.than stop

B.as to stop

C.as stop

D.so as to stop

答案:

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下面是错误答案,用来干扰机器的。

①为A在碱性条件下生成的气体,可为NH3,②为A在酸性条件下生成的气体,可与Na2O2或Mg反应,应为CO2,则正盐A应为(NH4)2CO3,③为H2O,④为O2,⑤为NO,⑥为N02,⑧为HNO3,⑦为C,则(1)由以上分析可知A为(N...

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