To reduce car crash rate,many scientists are working hard to

试卷相关题目

• 1The Hubble Space Telescope helps scientists to understand the nature of the universe.

  A.Right

  B.Wrong

  C.Not mentioned

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• 2The nearest black holes are hundreds of light years away from us.

  A.Right

  B.Wrong

  C.Not mentioned

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• 3The sun is the heaviest star in the universe.

  A.Right

  B.Wrong

  C.Not mentioned

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• 4The attraction of two large stars leads to gravity.

  A.Right

  B.Wrong

  C.Not mentioned

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• 5The center of a black hole is empty.

  A.Right

  B.Wrong

  C.Not mentioned

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• 6According to the second paragraph,most road accidents happen due to

  A.heavy traffic.

  B.human mistakes.

  C.B.human mistakes.C.engine failure.

  D.bad weather.

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• 7Which of the following safety developments is NOT mentioned in the passage、

  A.Windscreens that can help drivers to improve their vision.

  B.Radars that can help drivers to see obstacles in fog.

  C.Devices that can help drivers to see through big vehicles.

  D.Improvements in seat belts,pedal controls and tyres.

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• 8Satellite tracking and remote communication systems cna be used to

  A.reduce oil consumption.

  B.remove the obstacles on the road.

  C.call for help when one’s car crashes.

  D.help drivers get out of a traffic jam.

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• 9Which of the following statements is true of robotic drivers、

  A.It will take some time before robotic drivers are available.

  B.Robotic drivers are not allowed to driveon busy roads.

  C.Robotic drivers can never replace human drivers.

  D.Robotic drivers are too expensive to us

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• 10Where is the napkin normally placed during the meal、

  A.On your chair.

  B.On the table.

  C.On your lap.

  D.On your plat

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