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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. A sensor in the wristband detects this pressing action and measures the time between the sound 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 to market within about a year.
小題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
小題2:How should a driver respond to the sounds from Driver Alert?
A．By sounding a warning.B．By touching the wristband.
C．By checking the driving time.D．By pressing the steering wheel.
小題3:We can learn form the text that the driver needs to stop for a break when his response time is ______.
A．about 400 millisecondsB．below 500 milliseconds
C．over 500 millisecondsD．about 4 minutes
小題4:When the driver gets sleepy while driving, Driver Alert ______.
A．moves more regularlyB．stops working properly
C．opens the window for the driverD．sounds more frequently and loudly

小題1:A
小題2:D
小題3:C
小題4:D

試題分析：本文介紹了一個旨在于減少由于司機疲勞駕駛而導致事故的裝置Driver Alert，詳細說明了它的工作原理和具體作用。
小題1:A 細節(jié)題。根據文章第二段1，2行The system, called Driver Alert, aims to reduce deadly road accidents by 20% - 40% that are caused by tiredness.可知這項裝置旨在于減少由于疲憊而導致的事故。故A正確。
小題2:D 細節(jié)題。根據文章第三段前3行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.可知D項正確。
小題3:C 細節(jié)題。根據文章第四段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.可知C項內容正確。
小題4:D 細節(jié)題。根據文章倒數第二段最后2行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.可知如果司機回應較慢，Driver Alert 就會叫的更頻繁，聲音更大。故D項正確。
點評：本文介紹了一個旨在于減少由于司機疲勞駕駛而導致事故的裝置Driver Alert。本文細節(jié)題居多，答題時在文章找到對應的地方，用筆進行標記，這有利于后期有時間檢查時可以立刻找到答案的位置。仔細理解作者所講的意思，再結合選項，通過排除法和自己對全文的把握，選出正確答案。
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科目：高中英語 來源：不詳 題型：閱讀理解

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科目：高中英語 來源：不詳 題型：閱讀理解

B
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