According to the selection, streams overtop their banks partly because______.

试卷相关题目

• 1The author states that______.

  A.lakes and swamps once acted like natural reservoirs

  B.up-and-down hill plowing catches and stores water

  C.stream channels are the best carriers of water

  D.floods are easily prevented and controlled

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• 2All of the following cause floods EXCEPT______.

  A.heavy rain

  B.melting snow

  C.increasing storm runoff

  D.porous soil

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• 3The best title for the selection would be______.

  A.River Rising! River Rising!

  B.Forests and Floods

  C.Flooding in the U. S.

  D.The Results of Flooding

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• 4For as long as three months of a year, the sun _________on the ice-covered land of Alask

  A.A.

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• 5Genera has increased the number of its employees recently.

  A.Right

  B.Wrong

  C.Not mentioned

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• 6The floods which are given most publicity______.

  A.cause no damage

  B.cause the most damage

  C.cause less agricultural damage than the many smaller, more frequent floods

  D.far exceed the smaller, more frequent floods in agricultural loss

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• 7According to Leszczynski, how does mobile phone affect one's health、 _________

  A.Mobile phone radiation can increase protein activities and such activities can make the protective shield more permeable.

  B.Mobile phone radiation can shrink the blood vessels and prevent blood from flowing smoothly.

  C.Mobile phone radiation will bring stress to people exposed to it.

  D.Mobile phone radiation kills blood cells at a rapid speed.

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• 8What's the result of the French study、 _________

  A.The harm of mobile phone radiation is life-threatening.

  B.Mobile phone may affect one's normal way of thinking.

  C.Sleep disorders could result from mobile phone radiation.

  D.A protein called hsp27 is killed by mobile phone radiation.

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• 9What kind of disease is not caused by the use of mobile phone、 _________

  A.Fatigue.

  B.Headache.

  C.Alzheimer's disease.

  D.Tuberculosis.

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• 10According to the passage, what would be the future of the use of mobile phone、 _________

  A.People will be forbidden to use mobile phone.

  B.People dare not use mobile phone because of its radiation.

  C.People will continue to use mobile phone.

  D.There will be new restrictions on the use of mobile phon

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