When coal, the _____ of plants, is burent, chemical energy is changed into heat energy.

试卷相关题目

• 1The streams, often petty and insignificant during dry weather, become raging _____ during a storm.

  A.current

  B.wave

  C.torrent

  D.tide

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• 2In the United States educational system, intermediate school is the _____ stage between the primary grades and high school.

  A.traditional

  B.transitional

  C.transmissional

  D.transient

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• 3After the seventeenth century, the majority of Harvard graduates entered professions _____ the ministry.

  A.better than

  B.more than

  C.other than

  D.less than

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• 4Malaria,it is true, has been practically _____ in thirteen countries, inchuding the United States, and is under attack in many thers.

  A.wiped out

  B.died out

  C.put out

  D.kept out

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• 5Issan Newton, a British scientist, who lived over 300 years ago, said that he saw _____ than others becauce he stood on the shoulders of giants.

  A.further

  B.more haead

  C.farther

  D.more afar

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• 6Scientists study the _____ between parents and their babies to better understand how infants learn.

  A.interchange

  B.interrelation

  C.intercourse

  D.interaction

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• 7As no two speakers of a language speak _____ ,difference wiil be found in the pronunciation of the speakers.

  A.identically

  B.alike

  C.likely

  D.similarly

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• 8Some people _____ in part the defeat of the revolution in France and Germany to the English diplomacy.

  A.contributed

  B.attributed

  C.assigend

  D.owed

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• 9By saying that the U.S.“was now able to take its place among the arbitors of the world's destinies”(the second sentence in paragraph 1), the author means that the U.S. _____ .

  A.established itself as one of the big powers

  B.was now directing the world on a new course

  C.became mature as a nation

  D.brought new rules to the world's diplomatic play

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• 10By calling it an“informal empire”(the second sentence in paragraph 2), these revisionists meant that the U.S. _____ .

  A.had not become a real power yet

  B.had not occupied enough territory abroad

  C.was not yet economically strong enough

  D.carried out a policy of economic aggression

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