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题目
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Carl Linnaeus made great contributions to ________ plant species.
A.groupB.have groupedC.groupingD.been grouping

答案
C
解析
make great contributions to 短语中to为介词,所以答案C。
核心考点
试题【Carl Linnaeus made great contributions to ________ plant species.A.groupB.have g】;主要考察你对句式等知识点的理解。[详细]
举一反三
—What about putting some pictures into the report?
      A picture is worth a thousand words.
A.No way!B.Why not?C.That’s right.D.No matter.

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Further space exploration has been _______ with the rapid development of China’s science and technology.
A.made it possibleB.made possible
C.made it possiblyD.made possibly

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____________, I wouldn’t have finished my homework.
A.If you didn’t help meB.Had you not helped me
C.If you haven’t helped meD.Haven’t you helped me

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________________________, and the problem would be straightened out(解决).
A.A bit more effortB.Having a little effort
C.If you have a bit more effortD.There being a little effort

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. ______ is no possibility _____ Jack will win the first place in the competition.
A.There; thatB.It; thatC.There; whetherD.It; whether

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