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题目
题型:不详难度:来源:
------- What is the price of petrol these days
-------Oh, it ______ sharply since last month.
A.is raisedB.has risenC.has arisenD.is increased

答案
B  
解析
本题考查时态的用法。根据since last month 可知应用现在完成时。
核心考点
试题【------- What is the price of petrol these days -------Oh, it ______ sharply sinc】;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.hadB.would have
C.would have hadD.could have

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A.was cookingB.will cookC.cookedD.had cooked

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Although the causes of cancer_____, we do not yet have any practical way to prevent it.
A.are being uncoveredB.have been uncoveringC.are uncoveringD.have uncovered

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