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(方向盤(pán))．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 warms 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 markers will bring the product to market within about a year．

【小題】According to the text，Driver Alert ______．

A．a(chǎn)ims to reduce tiredness-related accidents

B．has gone through testing at laboratories

C．a(chǎn)ims to prevent drivers from sleeping

D．has been on sale for 12 months

【小題】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】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．a(chǎn)bout 400 minutes

【小題】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

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年北京市西城區(qū)高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：單項(xiàng)填空

I ______ for six months．I'm really out of shape．

A．hadn't exercised

B．didn't exercise

C．don't exercise

D．haven't exercised

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年江蘇南京鹽城兩市高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：單項(xiàng)填空

We guarantee that all your personal information will be treated ________ and there should be no fear at all of identity theft．

A．initially B．independently

C．confidently D．Confidentially

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年北京市豐臺(tái)區(qū)高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：單項(xiàng)填空

The road_______next week leads to Highway 62．

A．building B．to build

C．to be built D．built

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆河北衡水中學(xué)高三上四調(diào)考英語(yǔ)試卷（解析版） 題型：閱讀理解

Service Foods makes it easier for cooks to reduce mealtime complains. Service Foods is so confident that they can reduce complaints, in fact, that the company is offering a series of mealtime complaint-reduction tips.

According to a representative of Service Foods, complaints can occur when busy cooks serve substandard, low quality meats. As products sit in packaging in the meat case at the store, the meat can age out too much. The natural flavor disappears, and it can be replaced with an undesirable strange flavor. According to Service Foods, complaints from children are common when you serve substandard meats. Kids may not have the words to describe why they don't like the meats, but they're certainly willing to express their displeasure. By serving meats from Service Foods, complaints can be reduced. Service Foods meats are all natural and organic, meaning the meats have-no chemicals or water or colorings that could change the taste. And the meats are flash-frozen right after cutting, so they won't taste strange to your children.

If you're facing different types of complaints, Service Foods may still be able to help you. Some families have mealtime boredom. The same meals, served in the same way, week after week, can be incredibly boring and hard 'to look forward to. When it comes to these complaints, Service Foods has the answer right on the web. Just go to http: //www. servicefoods.com and you'll find a long list of recipes to try. Some of these recipes are made in demonstration format, so you can watch the video and get step-by-step instructions on how to prepare the meals. By following these recipes from Service Foods, complaints relating to boredom can certainly be reduced.

While Service Foods knows complaints at mealtime can never be totally eradicated, as picky kids will always be picky kids with concerns, the company is doing everything possible to deal with the problem and get cooks the help they need.

1.Service Foods can solve mealtime boredom by ______.

A.serving flash-frozen meat

B.expressing children's complaints

C.instructing different ways of cooking

D.supplying natural food without chemicals

2.The underlined word "eradicated" in the last paragraph can be replaced with ______.

A.covered B.removed

C.reduced D.accepted

3.From the passage we can learn that Service Foods can do the following EXCEPT ______.

A.cook food for picky kids

B.teach how to prepare meals

C.provide natural and organic meat

D.help reduce complaints about foods

4.What will the readers probably do after reading the passage?

A.Pay for Service Foods service.

B.Buy organic meat from now on.

C.Write recipes for Service Foods.

D.Answer complaints on the web.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年北京市東城區(qū)高三下學(xué)期綜合練習(xí)一 英語(yǔ)試卷（解析版） 題型：閱讀理解

It is easy to lose patience with science today． The questions are pressing: How dangerous is air pollution? What about low-level radiation? When will that horrible earthquake strike California? And why can't we predict weather better? But the evidence is often described as "uncertain", forcing scientists to base their points of view almost as much on intuition（直覺(jué)）as on science．

When historians and philosophers of science listen to these questions, some conclude that science may not be able to solve all these problems any time soon． The unknowns can grow into riddles that are impossible to solve． Because of the unstable and changing state of the earth's atmosphere, for example, scientists have struggled for centuries to predict the weather with precision（精確） but failed．

The case is different for scientists of astronomy． For example, they think that the gravitational force of a nearby space vehicle, though tiny, is able to change the path of a much larger planet if the vehicle spends enough time close to it． With the aid of Newton's laws of gravitational attraction, ground controllers can predict the path of a planetary probe （探測(cè)儀）-or satellite-with incredible accuracy． They do this by calculating the gravitational force from each of the passing planets until the probe speeds beyond the edge of the solar system．A much more difficult task is to calculate what happens when two or three times of such force pull on the probe at the same time． Such procedures can, of course, be very difficult, but for experiments, they are effective．

This range of questions-from simple problems to those impossibly complex-has resulted in nicknames for various fields of study: "soft" sciences and " hard " sciences．“Soft” sciences admit a great degree of uncertainty． Academicians tend to judge fields such as sociology, psychology, and political science as “soft” because they are assumed to be understandable, of unnecessary mathematical accuracy, and concerned with everyday affairs such as interpersonal relationships． However, "hard" sciences, such as astronomy and chemistry, are said to offer precise answers． Precise definitions for "hard" sciences vary, but the characteristics of "hard" sciences include: producing testable predictions; performing controlled experiments; relying on quantifiable data and mathematical models; a high degree of accuracy and objectivity; and generally applying a pure form of the scientific method

1.We can learn from the passage that ．

A．a(chǎn) large planet is able to change the size of a tiny planet

B．ground controllers can affect the gravitational force of planets

C．calculating the probe speeds beyond the solar system is possible

D．predicting the weather is more difficult than predicting the path of a satellite

2.According to the author, "soft" sciences ．

A．a(chǎn)llow for certain inaccuracy

B．focus on personal relationships

C．a(chǎn)re based on controlled experiments

D．a(chǎn)re rooted in data and mathematical models

3.What might be the best title for the passage?

A． Science, a Long History?

C． Science, Accurate or Not?

B． Science and Its Functions

D． Science and Its Application

4.What is the author's attitude towards science in this passage?

A． Objective． B． Sceptical．

C． Disapproval． D． Optimistic

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年北京市朝陽(yáng)區(qū)高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：閱讀理解

“The 13th of June，1325，I left Tangier，my birthplace，with the intention of making the pilgrimage（朝圣）to Mecca ．．．to leave all my friends，to abandon my home as birds abandon their nests．” So begins an old manuscript in a library in Paris—the travel diary of Ibn Battuta．

Almost two centuries before Columbus，this young Moroccan set off for Mecca，returning home three decades later as one of history’s great travelers．Driven by curiosity，he journeyed to remote corners of the Islamic world，traveling through 44 modern countries，three times as far as Marco Polo．Little celebrated in the West，his name is well known among Arabs．In his hometown of Tangier，a square，a hotel，a cafe，a ferry boat，and even a hamburger are named after him．

Ibn Battuta stayed in Mecca as a student for several years，but the urge to travel soon took over．In one adventure，he traveled to India seeking profitable employment with the sultan—the Muslim ruler of Delhi．On the way，he described his group being attacked in the open country by 80 men on foot，and two horsemen: “… I was hit by an arrow and my horse by another，but God in his grace preserved me ．．．” In Delhi，the sultan gave him the position of judge，based on his previous study at Mecca．But the sultan had an unpredictable character，and Ibn Battuta looked for an opportunity to leave．When the sultan offered to finance a trip to China，he agreed．Ibn Battuta set off in three ships，but misfortune struck while he was still on the shore．A sudden storm grounded and broke up two ships，scattering （散播）treasure and drowning many people and horses．As he watched，the third ship，with all his belongings and slaves—one carrying his child—was carried out to sea and never heard from again．

After a lifetime of amazing adventures，Ibn Battuta was finally ordered by the Sultan of Morocco to return home to share his wisdom with the world．Fortunately，he agreed and wrote a book that has been translated into numerous languages，allowing people everywhere to read about his unparalleled journeys．

1.What can we learn about Ibn Battuta from the passage？

A．He had great interest in the Islamic world．

B．He returned to his homeland to write a book．

C．His journeys were less important than Marco Polo’s．

D．His journeys were very common for people of that time．

2.The Sultan of Delhi gave Ibn Battuta a position of judge because _______．

A．Ibn Battuta had studied in Mecca

B．Ibn Battuta had been a judge before

C．Ibn Battuta had worked as a translator

D．Ibn Battuta had traveled to many countries

3.Which is the best title for the passage？

A．The Learned Ibn Battuta

B．A Visitor to Mecca

C．The Travels of Ibn Battuta

D．Desire for Adventures

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2015高北京第六十六中學(xué)三上第一次質(zhì)量檢測(cè)英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

_____ more visitors，the Beijing Garden Expo Park gives roses to visiting couples．

A．Attracted

B．Attracting

C．To attract

D．Having attracted

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年浙江省溫州市十校聯(lián)合體高三上期初聯(lián)考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

After several rounds of competition, the little girl _________ because of her excellent spoken English and quick response.

A. put out B. picked out

C. broke out D. stood out

查看答案和解析>>

同步練習(xí)冊(cè)答案