Hewantsgoknowifitisat600milesa

发布时间:2020-07-10 18:06:09

He wants go know if it is at 600 miles an hour ________the newest planes can go.













A.at which












B.when











C.which











D.that

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C解析命题目的本题考查定语从句关系词的选择。解题方法掌握先行词与定语从句谓语动词的关系。
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