2. 外语
  3. The magician picked several persons ______ from the audience and asked them to help him with the performance.

The magician picked several persons ______ from the audience and asked them to help him with the performance.

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问题 The magician picked several persons ______ from the audience and asked them to help him with the performance.
选项 A、by accident
B、at random
C、on occasion
D、on average
答案B
解析 at random意为“胡乱地，随便地”，如：I made a choice at random．我随便做了个选择。by accident则作“偶然地，意外地”讲，如：He met an old friend in the street by accident．他在街上偶然遇到一位老朋友。on occasion意为“间或，有时”，如：He visits the city on occasion．他有时进城去。 on(an，the)average意为“平均，平均来说”，如：On an average，the
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