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题目
题型:不详难度:来源:
Malaysia Airlines Flight 370 ___________ course and turned back toward Kuala Lumpur -- but there were no indications from the pilot that he was doing so.
A.must have changedB.could have changed
C.might have changedD.should have changed.

答案
C
解析

试题分析:句意:马航370客机可能已经改变航向,折返吉隆坡——但是没有飞行员这样做的迹象。A肯定做过某事;B本来有可能做(但是没做);C可能做过;D本应该做(但是没做)。根据破折号后可知这是猜测可能发生过的事情,故答案选C。
核心考点
试题【Malaysia Airlines Flight 370 ___________ course and turned back toward Kuala Lum】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
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A.is not forB.had not been forC.were not forD.would not be for

题型:不详难度:| 查看答案
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—Don"t worry !  She just went to collect her kids.She     be back by then.
A.shouldB.canC.wouldD.might

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—Really? Maybe I _______ a little earlier.
A.should comeB.should have come
C.could have comeD.must have come

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John agreed to the suggestion that his students _____ two weeks to prepare for the exam. 
A.giveB.should giveC.be givenD.must be given

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A.should have liedB.ought to have layC.might have laidD.must have laid

题型:不详难度:| 查看答案
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