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The specimens to be analyzed were taken _______.A、by accidentB、at randomC、on o
The specimens to be analyzed were taken _______.A、by accidentB、at randomC、on o
游客
2023-09-06
55
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问题
The specimens to be analyzed were taken _______.
选项
A、by accident
B、at random
C、on occasion
D、on average
答案
B
解析
介词短语辨析。A.by accident偶然地,碰巧地;B.at random随机地,任意地;C.on occasion有时,必要时;D.on average平均,通常。根据句意应选B。句意为:要进行分析的样品是随机抽取的。
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