In 1863 the United States government began providing which of the following to mail carriers、

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• 1The author mentions the city of Philadelphia (par

  A.2) because .A.it was the site of the first post office in the United Stated

  B.its postal service was inadequate for its population

  C.it was the largest city in the United States in 1847

  D.it was commemorated by the first United States postage stamp

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• 2All the following were seen as advantages of the postage stamp EXCEPT that .

  A.it had to be purchased by the sender in advance

  B.it increased the cost of mail delivery

  C.it was difficult to affix to letters

  D.is was easy to counterfeit

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• 3The passage mainly discusses .

  A.the increased use of private mail services

  B.the development of a government postal system

  C.a comparison of urban and rural postal services

  D.the history of postage stamps

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• 4The local Indian tribes were reluctant to trade with Jamestown settlers because .

  A.they themselves didn’t have enough to eat

  B.they knew too little about the value of the copper brought by the settlers

  C.they had quite different cultures with the new settlers

  D.they considered the new settlers to be their enemy

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• 5Compared with Roanoke Island inhabitants, Jamestown settlers were luckier because .

  A.there were cypress trees in Virginia

  B.their drought was drier

  C.their drought was shorter

  D.their drought was less severe

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• 6The private postal services of the 19th century claimed that they could do which of the following better than government、

  A.Deliver a higher volume of mail.

  B.Deliver mail more cheaply.

  C.Deliver mail faster.

  D.Deliver mail to rural areas.

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• 7A jet plane will usually have its best average rate of speed on its run from .

  A.New York to San Francisco

  B.Los Angeles to New York

  C.Beijing to Singapore

  D.Sydney to Tokyo

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• 8At the top of Jungfrau, which towers 12,000 feet above the town of Interlaken in Switzerland, the temperature is usually .

  A.below freezing

  B.about 42 degrees colder than on the ground

  C.warmer than in Interlaken

  D.about 75 degrees colder than in Interlaken

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• 9Studies in the stratosphere have been made possible by .

  A.meteorologists

  B.jet planes

  C.earth satellites

  D.study of jet streams

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• 10Life as we know it exists on the earth because the atmosphere .

  A.contains a layer of ozone gases

  B.contains electrically charged particles

  C.is warmest at the bottom

  D.carries the ultraviolet rays of the sun

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