Necessary conditions for life on Mars mentioned in the passage may include ____  .

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• 1According to the passage, Dr. Clarke was so excited because ____ .

  A.such caves could provide energy for life

  B.they had finally found the caves on Mars

  C.such caves would be perfect places to hunt for life

  D.scientists had long been looking for these caves

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• 2We can learn from the passage that ____  .

  A.water has already been found on Mars

  B.the scientists found all the caves at night

  C.it is certain that there is life in these caves

  D.the surface of Mars is bitterly cold, radiation-soaked and dry

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• 3Which of the following would be the best title of the passage、

  A.Environmental Protection

  B.Big Cities Banning Plastic Bags

  C.Effect of Plastic Fags on Sea Animals

  D.British Town Banning Plastic Bags

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• 4It can be inferred from the passage that _____.

  A.most of the people in Modbury cntinue to use plastic bags

  B.fewer and fewer plastic bags will be used in the world.

  C.San Francisco is the first city to ban plastic bags in the world

  D.most countries in the world have passed laws to ban plastic bags

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• 5The underlined word “disposable” in the passage probably means _____.

  A.acceptable

  B.valuable

  C.throw-away

  D.long-lasting

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• 6According to the information above, if your child has hearing problems, you can turn to  ____.

  A.At-Home Profession Corp.

  B.Globe Insurance Company

  C.Bradford Pubbcations

  D.American Inventors Corp.

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• 7From the advertisements above, we can learn that ____ .

  A.Globe Insurance Company has a history of 51 years

  B.as a medical transcriptionist, you may earn $ 25,000 a month

  C.Bradford Pulications offers a treatment to hearing impaired parents

  D.you can visit www. aic. com when you invent a new model of hearing aid

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• 8The video cameras were used to catch the dogs’ responses because ____ .

  A.it was easier to catch the dogs’response changes in the tail wagging

  B.the dogs were put in the wooden boxes and tested one at a time.

  C.they enabled the dogs’owners to know about their dogs’habit

  D.the dogs wagged their tails in different directions when they were in different moods

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• 9The underlined word“intensity” in the passage means ____ .

  A.surprise

  B.worry

  C.excitement

  D.interest

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• 10When there are no stimuli, a dog will  ____.

  A.wag to the left

  B.wag to the right

  C.not wag at all

  D.wag to the left and then to the right

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