试题与答案

All the passengers were _______ wounded

题型:选择题

题目:

All the passengers were _______ wounded in the road accident.

A.more and more

B.by and by

C.more or less

D.little and little

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:A、过滤时滤纸有破损,造成有一部分不溶性的泥沙等进入滤液,会导致所得精盐质量偏大,产率偏高,故选项错误.B、蒸发时,看到晶体析出,立即停止加热,会导致所得精盐很潮湿,所得精盐的质量偏...

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