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1.Scientists have come to the conclusion ______the temperature on Earth is geiting higher  and higher.(  )
A.whatB.thatC.whichD.when

分析 句意:科学家们已经得出结论,地球上的气温变得越来越高.

解答 答案B.
"______the temperature on Earth is geiting higher and higher"是conclusion的内容,是同位语从句,并且这句话是完整的句子,不缺少任何成分,故用that来引导同位语从句."what"在名词性从句中做主语,宾语,表语;"which"表示哪一个;"when"表示时间.故选B

点评 本题考查同位语从句,要分析从句中句子的结构和意思是否完整,才能选择出正确选项.

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