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解析:The people for the experiment were

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【单选题】The people for the experiment were chosen completely ______.
A.at length
B.in essence
C.at random
D.in bulk
网考网参考答案:C
网考网解析:

at random任意,随机地。句意:参加实验的人员完全是被随意地挑选出来的。at length最后,详细地;in essence本质上;in bulk散装,大量。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>

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