According to some doctors, one of the ways to delay the aging process is to make sure that our brains get enough ________.

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• 1Giving up my job to go back to full-time education was a big ________, but now I know itwas the best decision I have ever made.

  A.project

  B.commitment

  C.competition

  D.ambition

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• 2Last year the number of students who graduated with a driving licence reached 200,000, a(n) ________ of 40,000 per year.

  A.average

  B.number

  C.amount

  D.quantity

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• 3A person of great ________ usually can achieve his goal

  A.instruction

  B.information

  C.determination

  D.recognition

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• 4The young man made a ________ to his parents that he would try to earn his own living after graduation.

  A.prediction

  B.promise

  C.plan

  D.contribution

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• 5If you take my ________，you'll make a lot of money in the trade.

  A.command

  B.principle

  C.attitude

  D.tip

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• 6If you insist on smoking heavily like that, you will have to suffer the ________ sooner or later.

  A.achievements

  B.causes

  C.consequences

  D.exchanges

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• 7The house which her boyfriend has just bought is in beautiful ________.

  A.situation

  B.state

  C.condition

  D.surroundings

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• 8China has got a good ________ for fighting against the flu with its careful and smooth organization.

  A.reputation

  B.influence

  C.impression

  D.knowledge

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• 9Health problems are closely connected with bad eating habits and a ________ of exercise.

  A.limit

  B.lack

  C.need

  D.demand

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• 10Hiking by oneself can be fun and good for health. It may also be good for ________building.

  A.respect

  B.friendship

  C.reputation

  D.character

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