Question

ÔĶÁÏÂÁжÌÎÄ£¬´ÓÿÌâËù¸øµÄËĸöÑ¡ÏA¡¢B¡¢CºÍD£©ÖУ¬Ñ¡³ö×î¼ÑÑ¡Ïî¡£ ¡¡¡¡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 wristband£®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£¨·½ÏòÅÌ£©£®A sensor in the wristband detects this pressing action and measures 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 respond,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 tomarket within about a year£® (1) 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 (2) How should a driver respond to the sounds fromDriver Alert? [¡¡¡¡] A£® By sounding a warning£® B£® By touching the wristband£® C£® By checking the driving time£® D£® By pressing the steering wheel£® (3) We can learn from the text that the driver needs tostop for a break when his response time is ________ [¡¡¡¡] A£® about 400 milliseconds B£® below 500 milliseconds C£® over 500 milliseconds D£® about 4 minutes (4) When the driver gets sleepy while driving,Driver Alert ________ [¡¡¡¡] A£® moves more regularly B£® stops working properly C£® opens the window for the driver D£® sounds more frequently and loudly

Answer 1

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