A number of tests have been conducted to _________ that these drugs have no side effects.

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• 1World leaders at the G20 summit conference in London decided to_______$1．1trillion（万亿） to supporting world economic growth and trade．

  A.collect

  B.spend

  C.devote

  D.pay

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• 2In the center of the room stood a table with a _____ lamp on it, so it is very bright in the room.

  A.lighted

  B.lighting

  C.lit

  D.light

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• 3If you are not sure _______ your strengths and weaknesses ______, you may ______ a professional expert so that you can develop yourself to the full.

  A.what; lie; talk with

  B.where; lie; consult

  C.which; lay; refer to

  D.where; lay; go to

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• 4This dictionary is of great use, which can help you_________many problems about words and idioms.

  A.keep up

  B.clear up

  C.look up

  D.take up

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• 5He ________ the fire with a piece of wet carpet.

  A.ended up

  B.put out

  C.gave out

  D.held back

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• 6Instead of leading us a hand, he just stood by, __________us when we were in trouble.

  A.made fun of

  B.got tired of

  C.getting tired of

  D.making fun of

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• 7A heavy snow _______ a harvest year.

  A.expects

  B.wishes

  C.promises

  D.Hopes

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• 8No one has come up with a better explanation of why dinosaurs ______.

  A.died away

  B.died for

  C.died of

  D.died out

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• 9Facing the emergence, we were at a loss and none of us could ______ a solution to the problem.

  A.come about

  B.come out

  C.come up against

  D.come up with

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• 10The doctors have told him to _______ smoking and drinking.

  A.cut away

  B.cut back

  C.cut off

  D.cut down

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