2. 外语
  3. The people for the experiment were chosen completely______.

The people for the experiment were chosen completely______.

admin2017-03-25  32
问题 The people for the experiment were chosen completely______.
选项 A、at length
B、in essence
C、at random
D、in bulk
答案C
解析 C项“at random任意，随机地”符合题意。其他三项“A项at length最后，详细地；B．项in essence本质上；D项in bulk散装，大量”都不正确。本题意为“参加实验的人员完全是被随意地挑选出来的”。因此C项为正确答案。
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