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  3. In your car you may have a cell phone, a telephone also known as a mobile phone that you can carry around and use anywhere. On y

In your car you may have a cell phone, a telephone also known as a mobile phone that you can carry around and use anywhere. On y

admin2019-05-17  37
问题    In your car you may have a cell phone, a telephone also known as a mobile phone that you can carry around and use anywhere. On your way, you may feel coordinated and enjoy your hands-free phone talking while driving. But recent studies suggest that it isn’ t the dialing or the arm waving that makes driving while talking on a cell phone dangerous. It is the yakking itself—or more precisely, the continuous conversation with someone who isn’t present—that does. David Strayer, a Utah psychologist, says " your driving performance while talking on a cell phone is weakened at levels comparable to, or worse than, driving with a blood alcohol level of 0. 08" , which is the legal limit in most states of America.
   Using a driving-training simulator, Strayer and his colleagues compared the attention levels and response time of 110 drivers in various situations. In dense traffic, cell phone users were about 20 percent slower to respond to sudden hazards than other drivers, and they were about twice as likely to drive into the back of a braking car in front of them. " Cell phone drivers are obtaining less than 50 percent of the visual information that non-cell drivers are getting," says Strayer. " Looking and seeing are not one and the same. " By contrast, the researchers found that listening to the radio or conversing with passengers is not as hazardous. " When a dangerous situation arises, the driver and passengers put their conversation on pause," Strayer says.
   Whether talking with a passenger or someone on a cell phone, however, people are less able to recall the details of a conversation carried on while driving. " So it might not be good for your economic health to discuss investment strategies with your agent while either of you is driving," Strayer adds lastly.
The experiment shows all the following EXCEPT that______.
选项 A、the cell phone drivers get less than half of the visual information
B、the cell phone drivers are twice as likely to hit the front cars
C、the cell phone drivers’ response to sudden dangers is slower
D、the 110 drivers were reluctant to take part in the experiment
答案D
解析 根据第二段第二、三句“In dense traffic，cell phone users were about 20 percent slower to respond to sudden hazards…says Strayer．”可知，开车时打电话的司机对紧急情况的反应速度比不打电话的司机要慢20％，撞上前方车辆的概率要大一倍，获取的视觉信息也要少于50％。因此选项A、B、C均正确。故选D。
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