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Passage 1 A concept car developed by Ja

admin2022-08-02  50
问题 Passage 1A concept car developed by Japanese company Nissan has a breathalyzer-like detection system and other instruments that could help keep drunk or over tired drivers off the road.The car's sensors check odors inside the car and monitor a driver's sweat for traces of alcohol. An in-car computer system can issue an alert or even lock up the ignition system if the driver seems over-the-limit. The air odor sensors are fixed' firmly and deeply in the driver and passenger seats, while a detector in the gear-shift knob measures perspiration from the driver's palm.Other carmakers have developed similar detection systems. For example, Sweden's Volvo has developed a breathalyzer attached to a car's seat belt that drivers must blow into before the engine will start.Nissan's new concept vehicle also includes a dashboard-mounted camera that tracks a driver's alertness by monitoring their eyes. It will sound an alarm and issue a spoken warning in Japanese or English if it judges that the driver needs to pull over and rest.The car technology is still in development, but general manager Kazuhiro Doi says the combination of different detection systems should improve the overall effectiveness of the technology."For example, if the gear-shift sensor was bypassed by a passenger using it instead of the driver, the facial recognition system would still be used," Doi says. Nissan has no specific timetable for marketing the system, but aims to use technology to cut the number of fatalities involving its vehicles to half 1995 levels by 2015.The car's seat belt can also tighten if drowsiness is detected, while an external camera checks that the car is keeping to its lane properly. However, Doi admits that some of the technology, such as the alcohol odor sensor, should be improved. "If you drink one beer, it's going to register, so we need to study what's the appropriate level for the system to activate," he says.In the UK, some research groups are using similar advanced techniques to understand driver behavior and the effectiveness of different road designs. According to Doi,__________.A. the overall effectiveness of the detection technology has improvedB. Nissan is making a timetable to market the detection systemC. it is impossible to improve the'overall effectiveness of the detection systemD. Nissan aims to improve the detection technology to reduce the fatality rate
选项 A. the overall effectiveness of the detection technology has improved
B. Nissan is making a timetable to market the detection system
C. it is impossible to improve the'overall effectiveness of the detection system
D. Nissan aims to improve the detection technology to reduce the fatality rate
答案 D
解析 第五段说，这种监测技术仍然在发展之中，使用不同的监测系统应能改进这项技术的整体有效性，所以A、C都不正确。该段的最后一句说，日产公司并不准备将这种监测系统推向市场，但它的目标是使用这种技术到2015年将日产车的事故率减少到l995年的一半，所以B也不正确。只有D表达了Doi的意思。
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