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

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• 1The 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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• 2From 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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• 3According 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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• 4Necessary conditions for life on Mars mentioned in the passage may include ____  .

  A.lava and energy

  B.water and radiation from space

  C.gases and lava

  D.water and protection from radiation

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• 5According 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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• 6When 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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• 7The underlined word “they” refers to ____ .

  A.the dogs

  B.the trainers

  C.the systems

  D.the rescarchers

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• 8The purpose of doing the experiment is ____ .

  A.to train dogs for their owners

  B.to help people judge the mood of dogs

  C.to help dogs find company

  D.to help people choose their pet dogs

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