题目内容

We should see the events in their historical ________ before we draw any conclusion.
A respective
B retrospective
C prospective
D perspective

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钢管或球墨铸铁管道变形率应不超过3%,化学建材管道变形率应不超过2%。()

How many syllables does the word "middle" have?

A. 1.
B. 2.
C. 3
D. 4

醑剂中药物浓度一般为()

A. 5%~10%
B. 20%~30%
C. 30%~40%
D. 40%~50%
E. 60%~90%

May was ________ upset when she heard about Tom's traffic accident.
A prematurely
B evidently
C thoughtfully
D remotely

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