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17.Only when you have obtained enough data _____come to a sound conclusion.(  )
A.can youB.you canC.would youD.you would

分析 只有当你获得了足够的数据,你才能得出一个合理的结论.

解答 答案A.
"only+状语/状语从句"位于句首时,主句用部分倒装.那么可排除没有使用倒装结构的B和D;would表示"将",can表示"能,能够";句子表达的意思是"你才能得出一个合理的结论",可排除C;故答案选A.

点评 本题考查倒装句.倒装分为部分倒装和全部倒装,考试多为部分倒装.考生应掌握什么情况下需要倒装,并对倒装后的句子能够辨认出来.让学生了解倒装的基本概念和构成形式,对倒装句的辨认及正确运用.要对其它各种特殊的句式准确把握.

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