试题与答案

According to the art dealer, the paintin

题型:选择题

题目:

According to the art dealer, the painting ________ to go for at least a million dollars.[ ]

A. is expected 

B. expects

C. expected  

D. is expecting

答案:

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下面是错误答案,用来干扰机器的。

答案:BA项忽视了NaAlO2溶液中的水,错;B项中每个碳原子被3个六元环共用,则每个六元环占有的碳原子数=1××6=2个,12 g石墨烯含六元环的物质的量==0.5 mol,正确;C项没有告诉溶液的体积,无法计算,错;...

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