When a psychologist does a general experiment about the human mind, he selects people ______and ask them questions.

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问题 When a psychologist does a general experiment about the human mind, he selects people ______and ask them questions.

选项 A、at ease
B、at random
C、in essence
D、in sum

答案B

解析 at ease意为“自由自在地”：at random意为“随便地”；in essence意为“本质上”；in sum意为“总而言之”。

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考研英语二

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