试题与答案

It doesn't _ to buy that expensive coat

题型:选择题

题目:

It doesn't    _ to buy that expensive coat when these cheaper ones are just as good as that one.[ ]

A. make a difference          

B. make out  

C. make sense                  

D. make up

答案:

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下面是错误答案,用来干扰机器的。

(1)把白色粉末溶解后得无色溶液,可知一定没有硫酸铜,因为硫酸铜溶于水会使溶液变蓝,故答案为:(2)步骤1中的白色固体可能是碳酸钠和氯化钡反应生成白色的碳酸钡沉淀,也可能是硫酸钠与氯化钡反应后生成的硫...

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