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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

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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 makes. 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.
Strayer discourages drivers from talking about business on cell phones while driving because______.
选项 A、they tend to forget the details of a conversation
B、both the driver and his agent happen to be driving
C、it might not be good for the driver’ s memory
D、the other passengers would overhear the conversation
答案A
解析 根据最后一段第一句“Whether…less able to recall the details of a conversation carried on while driving．”可知，司机很容易遗忘在开车打电话时的谈话内容，因此Strayer提醒人们在开车时谈论生意是不明智的。故选A。
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