Tests have proved that caffeine affects the body by increasing the heart rate and rhythm, which _____ affects the circulatory system.

试卷相关题目

• 1Children going to school must have a chance to _____ excess physical energy; children even more than adults require and enjoy physical exercise and games of all kinds.

  A.work off

  B.let off

  C.play off

  D.put off

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• 2Some people say that if the holder of chopsticks pushes them _____ his stomach to even them up instead of tapping them on the table, the chances are he is a coolie.

  A.on

  B.against

  C.at

  D.to

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• 3Memorization which does not include thinking and understanding _____ students being unable to use what has been learnt.

  A.results in

  B.centers on

  C.adjusts to

  D.refers to

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• 4Possessing a car gives a much greater degree of _____ , enabling the driver to move around freely.

  A.travelling

  B.movement

  C.mobility

  D.freedom

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• 5Charles Ives's music was hardly popular with the broad public at the time it was written.The composer found it _____ impossible to his music performed.

  A.anything but

  B.nothing but

  C.none but

  D.all but

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• 6Both men and women, nine times out of ten,are firmly _____ of the superior excellence of their own sex.

  A.asserted

  B.ensured

  C.convinced

  D.conceived

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• 7Children between the age of 2 and 11 cannot comprehend the difference between commercials and television, so they cannot defend themselves against the _____ techniques of commercial television advertising.

  A.persuasive

  B.advisable

  C.irresistible

  D.appealing

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• 8During the 1990s world oil production will approach geological estimates of maximum production _____ , even with rapidly increasing petroleum prices.

  A.capability

  B.quota

  C.potentiality

  D.capacity

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• 9It would be very difficult for a library to be without dictionaries and encyclopedea; such reference books are _____ .

  A.unavoidable

  B.inevitable

  C.indispensible

  D.fundamental

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• 10To remain competitive in the international market place, U.S. industries have recognized that they must attract the brightest, most _____ young people available.

  A.committed

  B.dedicated

  C.determined

  D.contributed

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