Over years, scientists have made a great _____in the treatment of cancer

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• 1A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.

  A.permission

  B.penetration

  C.imagination

  D.convention

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• 2Reagan was elected ______ of the United States in 1981.

  A.a president

  B.president

  C.the president

  D.as president

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• 3I found her sitting in the corner, reading _____ newspaper, with _____ in her eyes.

  A.a ,tear

  B.a piece of ,tears

  C.a ,tears

  D.a piece of ,tear

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• 4The _________ from the top of the tower was very wonderful.

  A.sight

  B.view

  C.scene

  D.scenery

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• 5Scientists study _______ human brains work to make computers.

  A.when

  B.how

  C.that

  D.whether

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• 6You will find the map of great ____ especially when you get lost in a strange place

  A.price

  B.cost

  C.value

  D.count

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• 7How wonderful! The ______is made of _______.

  A.house ,glass

  B.house ,glasses

  C.houses ,glass

  D.houses ,glasses

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• 8Reducing the gap between the rich and the poor is one of the main ________ meeting the government.

  A.alarms

  B.stresses

  C.pressures

  D.challenges

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• 9I had only a few ________ with Miss Gao, though we work in the same school.

  A.laughter

  B.handshakes

  C.amusement

  D.contacts

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• 10In the past ten years, the ________mountain climber _________ a lot from his own adventurous _______

  A.experienced; experienced; experience

  B.experience; experienced; experiences

  C.experienced; has experienced; experiences

  D.experience; has experience; experience

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