四川南充高级中学高三检测考试(5)
作者:佚名 发布时间:2018-06-29 11:30:50 本文来源于:莲山课件
  D

  Self-driving cars are so popular that the University of Michigan has even established a town called Mcity to allow car manufacturers to safely test their autonomous cars.

  While Mcity can be used to simulate many real-life road conditions, it cannot help test gestures drivers use to communicate their intention to other drivers, pedestrians or cyclists. To find a solution, US car manufacturer Ford, with researchers from Virginia Tech, firstly considered using text as a way to communicate the car’s intention, but decided it would probably not work universally. The option of using symbols was also discarded, because research shows that a majority of people do not have a good understanding of what they mean. Finally, the researchers settled on light signals. A white light warned that there were no humans in the car. A slow blinking one indicated that the car was coming to a stop, while a rapidly flashing light cautioned passersby that the car was about to accelerate.

  Then came the big challenge—testing the signals on real road, “We needed to try out this new lighting to communicate the intention of the vehicle, but if you’ve got a driver behind the seat, you still have natural communication between humans,” said Andy Shaudt, who led the Virginia Tech research team. “So we needed to make it look like a driverless car.”

  The team designed a car seat costume that the driver would wear to cover his or her face and upper body. Of course, the drivers could see very clearly. The researchers then equipped the car with cameras to capture human reactions to a light bar on the windshield, which flashed one of the three signals when appropriate. Six drivers, all keeping their hands low on the wheel so as not to be detected, took turns to test driving the car through the busy streets.

  The overall reaction to the flashing lights was very encouraging. Who knew costumes could be useful for more than Halloween?

  32. What did the team use as a way to communicate the car’s intention?

  A. Light. B. Language. C. Symbols. D. Sound.

  33. What does the underlined word “they” in the second paragraph refer to?

  A. Symbols. B. Drivers.

  C. Researchers. D. Flashes.

  34. The car seat costume was intended to_______.

  A. amuse the driver B. attract the pedestrian

  C. warn the cyclists D. confuse the people

  35. What does a rapidly flashing light mean?

  A. The car was coming to a stop.

  B. There was no driver in the car.

  C. The car was about to speed up.

  D. The car was about to slow down.

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