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1、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，如NMET2004（1）D篇，NMET2003E篇，NMET2002 A篇，NMET2001C篇等。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。 A难度： 难 字数：258 words 标准用时：6 minutes 实际用时：_ ( NMET2005山东 E篇)A device that stops drives from falling asleep at the wheel is about to
2、 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
3、 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 squeezing the steering wheel(方向盘). A sensor in the wristband detects this pressing action
4、 and measures the time between the sound and the drivers response. Tiredness is directly related to a drivers 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 s
5、uch 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 drivers 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 be
6、en delivered to the departments 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.1. According to the text, Driver Alert _. A. aims to reduce tiredness-related accidents B. aims to prevent drivers
7、from sleeping C. has gone through testing at laboratories D. has been on sale for 12 months2. How should a driver respond to the sounds from Driver Alert? A. By sounding a warning. B. By checking the driving time. C. By touching the wrist hand. D. By pressing the steering wheel.3. We can learn from
8、the text that the driver needs to stop for a break when his response time is _. A. about 400 milliseconds B. over 500 milliseconds C. below 500 milliseconds D. about 4 minutes4. When the driver gets sleepy while driving, Driver Alert _. A. moves more regularly B. opens the window for the driverC. st
9、ops working properly D. sounds more frequently and loudly B 难度： 易 字数：266 words 标准用时：4 minutes 实际用时：_Alzheimers disease is a major national health problem. Nearly 2 million Americans over the age of 65 have Alzheimers disease. It is a leading cause of death among the elderly. But Alzheimers disease i
10、s not confined(限于) to the aged. There may be a million or more people under the age of 65 suffering from the disease.At one time, people suffering from the disease were said to be getting old. The disease was thought to be a natural part of growing old, but it is now known that Alzheimers disease st
11、rikes young and old alike. It is an organic(器官的) disease that destroys brain cells.Alzheimers disease affects the patients memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking. Then the patients memory begins to fa
12、il. He may forget dates, telephone numbers, names and plans.As the disease progresses, the patient may not recognize family and friends. These symptoms(症状) often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.In the las
13、t stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.Scientists dont know exactly what causes Alzheimers disease. It may be caused by a virus(病毒). It may be caused by a poisonous substance(物质) in the environment. At present, the
14、re is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease.5. The main idea of the passage is that Alzheimers disease _. A. is a terrible part of the aging process B. is an organic disease that affects young and old C
15、. can be cured by physical treatment D. causes forgetfulness6. All of the following are symptoms of Alzheimers disease EXCEPT _. A. forgetfulness B. difficulty in speaking C. loss of sight D. loss of the ability to walk7. According to the passage, which of the following may be a cause of Alzheimers disease? A. Poisons produced by the brain. B. Getting old. C. A virus. D
