To test his theory, the chemist ______ an experiment.

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问题 To test his theory, the chemist ______ an experiment.

选项 A、set up
B、set out
C、set forth
D、set in

答案A

解析 A项set up“提出,设立”。B项set out“出发,启程”;C项set forth“阐明,动身,把(会议等)提前”;D项set in“开始,到来,涨潮”。故应选A。
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