高考英语阅读科技环保类专练及详解

高考英语阅读科技环保类专练及详解

科技环保类文章在高考英语试题中出现的频率最高，几乎每年都有一片，。此类文章一般为说明文，但也常常夹杂着叙述和议论，并经常出现一些较新的科技名词或术语。考生若经常阅读英语报刊，具备丰富的课外知识，并积累一定的时新词汇，对解读此类文章会大有帮助。

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难度：难字数：258 words 标准用时：6 minutes 实际用时：___ ______

( NMET山东 E篇)

A device that stops drives 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 ac cidents 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 r elated to fatigue.

Driver Alert is based on a computerized wristband. The device, worn by drives or pilots, gives out a sound about every four minutes during a car journey. After each sound the driver must respond by sq ueezing the steering wheel(方向盘). 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. Usu ally, 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 sou nds, 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 m ore 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 suc cessful, the makers will bring the product to market within about a y ear.

1. According to the text, Driver Alert ______.

A. aims to reduce tiredness-related accidents

B. aims to pre vent drivers from sleeping

C. has gone through testing at laboratories

D. has been on sale for 12 months

2. How should a driver respond to the sounds from Driver Alert？

A. By sounding a warning.

B. By che cking the driving time.

C. By touching the wrist hand.

D. By p ressing the steering wheel.

3. We can learn from the text that the driver needs to stop for a bre ak when his response time is _____.

A. about 400 milliseconds

B. ove r 500 milliseconds

C. below 500 milliseconds

D. abo ut 4 minutes

4. When the driver gets sleepy while driving, Driver Alert ______.

A. moves more regularly

B. ope ns the window for the driver

C. stops working properly

D. sounds more frequently and loudly

难度：易字数：266 words 标准用时：4 minutes 实际用时：___ ______

Alzheimer's disease is a major national health problem. Nearly 2 mill ion Americans over the age of 65 have Alzheimer's disease. It is a le ading cause of death among the elderly. But Alzheimer's disease is no