酷兔英语

A device that stops drivers from falling asleep at the wheel is about to undergo testing at Department of Transport laboratories and could go on sale within 12 months.



The system, called Driver Alert, aims to reduce deadly road accidents by 20%-40% that are caused by tiredness. Airline pilots can also use it to reduce the 30% of all pilot-error accidents that are related to fatigue.



Driver Alert is based on a computerized wristhand. The device, worn by drivers or pilots, gives out a sound about every four minutes during a car journey. After each sound the driver must respond by squeezing the steering wheel (方向盘). A sensor in the wristhand detects this pressing action and measure the time between the sound and the driver's response.



Tiredness is directly related to a driver's response time. Usually, a watchful driver would take about 400 milliseconds to response, but once that falls to more than 500 milliseconds, it suggests that the driver is getting sleepy.



In such cases the device gives out more regular and louder sounds, showing that the driver should open a window or stop for a rest. If the driver's response continues to slow down, the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.



The device has been delivered to the department's laboratories for testing. If these tests, scheduled for six months' time, are successful, the makers will bring the product to market within about a year.




72. According to the text, Driver Alert ________ .
A. aims to reduce tiredness-related accidents
B. has gone through testing at laboratories
C. aims to prevent drivers from sleeping
D. has been on sale for 12 months

解析:根据文章第2段可知,答案A 细节理解题.
73. How should a driver response to the sounds from Driver Alert?
A. By sounding warning B. By touching the wristhand
C. By checking the driving time D. By pressing the steering wheel

解析:根据文章第三段最后两句可知.答案D 细节理解题.
74. We can learn from the text that the driver needs to stop for a break when his response time is ________ .
A. about 400 milliseconds B. below 500 milliseconds
C. over 500 milliseconds D. about 4 minutes

解析: 根据文章第四段可知答案C. 细节理解题.
75. When the driver gets sleepy while driving, Driver Alert ______ .
A. moves regularly
B. stops working properly
C. opens the window for the driver
D. sounds more frequently and loudly

解析:根据倒数第2段第一句话可知.答案D 细节理解题.

关键字:高考英语
生词表:
  • watchful [´wɔtʃfəl] 移动到这儿单词发声 a.注意的;戒备的 四级词汇
  • touching [´tʌtʃiŋ] 移动到这儿单词发声 a.动人的 prep.提到 四级词汇


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