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1.The host picked several persons from the audience _______ and invited them to the stage to have a dialogue.(  )
A.at randomB.by chanceC.in turnD.on occasion

分析 主持人任意地在观众中挑了几个人,邀请他们到舞台来对话.

解答 答案:A.
考查介词短语的辨析,at random是任意地,by chance是偶然地,in turn是依次,反之,on occasion是有时,根据语境是随意挑了几个人,故答案为A.

点评 考查介词短语的辨析,在平时的学习中要对这些短语进行积累,再根据具体的语境确定答案.

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