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题目
题型:不详难度:来源:
His sister left home in 1998,and ________ since.
A.had not been heard ofB.has not been heard of
C.had not heard ofD.has not heard of

答案
B
解析
首先观察四个选项的特点:从语态来看,两个选项使用了主动语态,两个选项使用了被动语态,优先考虑出题者是否想要考查被动语态。主语His sister与hear of之间是动宾关系,因此判定此题考查被动语态。结合句意“他的妹妹1998年离开家,然后就一直杳无音讯”以及时间标志词“since”可知,此处应使用现在完成时的被动语态。
核心考点
试题【 His sister left home in 1998,and ________ since.A.had not been heard ofB.has no】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
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A.have pollutedB.is being polluted
C.has been pollutedD.have been polluted

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The water ________ cool when I jumped into the pool for morning exercise.
A.was feltB.is feltC.feltD.feels

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—I"d like a pen which ________ well.
—Will this one ________?
A.writes;doB.writes;work
C.is written;doD.is written;work

题型:不详难度:| 查看答案
Walmart,which is one of the largest American supermarket chains,________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)
A.keepsB.keepC.have keptD.had kept

题型:不详难度:| 查看答案
All the scientific evidence ________ that increasing use of chemicals in farming ________ damaging our health.(2012·湖南)
A.show;areB.shows;are
C.show;isD.shows;is

题型:不详难度:| 查看答案
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