_____, but it is also a great way to lower the number of greenhouse gases in the air.

试卷相关题目

• 1_________,they had no chance of winning the war.   

  A.As they fought bravely

  B.Bravely though they fought

  C.Brave as they fought

  D.Now that they fought bravely

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• 2Not until he arrived home _____ he find that this wallet had been stolen.

  A.that

  B.would

  C.when

  D.did

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• 3It's beyong description.  Nowhere else in the world _______ such a beautiful place.

  A.can there be

  B.you can find

  C.there can be

  D.can find you

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• 4Only when I left my parents for Italy________how much I loved them.     

  A.I realized

  B.I had realized

  C.had I realized

  D.did I realize

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• 5Not until I began to work _____ how much time I had wasted.     

  A.didn't I realize

  B.did I realize

  C.I didn't realize

  D.I realized

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• 6— Tod hadn't passed the exam and was afraid of being scolded.—  _____.

  A.So it was with Jim

  B.So was Jim, his classmate

  C.It's the same with Jim

  D.Neither had Jim, his classmate

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• 7Only when your identity has been checked ____.

  A.you are allowed in

  B.you will be allowed in

  C.will you allow in

  D.will you be allowed in

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• 8It is said that by no means _____ to get into this laboratory without Mr. Jackson's permission.

  A.can the students be allowed

  B.the students can be allowed

  C.con be the students allowed

  D.can be allowed the students

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• 9_____ that Mary was able to set  up new branches elsewhere.     

  A.So successful her business was

  B.So successful was her business

  C.So her business was successful

  D.So was her successful business

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• 10Try _______ she might, Sue couldn't get the door open.  

  A.if

  B.when

  C.sine

  D.as

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