It is hoped that these discoveries can ________ the origins of the universe.

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• 1I ________ the piano when I was a little child, but I haven't played recently, so I have forgotten a lot.

  A.blew up

  B.put up

  C.took up

  D.packed up

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• 2They ________ all the details of the plan time and again to make sure that the project would go smoothly.

  A.got through

  B.went through

  C.got over

  D.dipped into

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• 3Earth Day is celebration of life and our planet. It is a reminder that we need to ________ the world we live in and that we should learn to respect life and nature.

  A.care about

  B.think of

  C.refer to

  D.watch out

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• 4When the strike was on,the police were called out to________.

  A.take action

  B.keep guard

  C.keep order

  D.watch out

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• 5The child ________when his father told him a funny story.

  A.was burst into laughing

  B.burst into laughter

  C.burst in laughing

  D.burst out tears

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• 6Vitamin B and C help to ________ your resistance.  

  A.set up

  B.give up

  C.build up

  D.stand up

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• 7The English teacher laid particular________the need of reading aloud.

  A.stress on

  B.importance

  C.stress to

  D.strain on

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• 8He promised that he would work well, and he didn't________.

  A.make me out

  B.turn me down

  C.let me down

  D.leave me behind

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• 9She has been giving ________ a part time job to support her poor family.

  A.a thought to taking

  B.a thought to take

  C.thought to taking

  D.thought to take

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• 10—Henry, ________ the light is ________ when you leave the lab.—All right.

  A.be sure; turned on

  B.make sure; turned off

  C.sure; turning off

  D.make sure; turning off

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