全新版大学英语(第二版)综合教程4-Unit 2 Text A 课后习题答案

更新时间:2023-07-07 22:01:49 阅读: 评论:0

Unit 2  Text A
Page 37
Pair Work
1. How important was the automobile industry in the twentieth century?
The automobile industry ranked as among the most lucrative and powerful industries of the twentieth century.
2. What will happen to cars and roads in the twenty-first century?
Cars and roads will be revolutionized in the twenty-first century.
3. Why does the author say the key to tomorrow's "smart cars" will be nsors?
Becau it is nsors that will enable vehicles and roads to be able to e, hear, feel, smell, talk, and act.
4. How would nsors help reduce traffic fatalities?
Sensors can n if a driver is drunk and refu to start up the engine.
5. What is the function of the radars hidden in the bumpers?
The radars hidden in the bumpers can scan for nearby cars.
If you make a rious driving mistake the computer will sound an immediate warning.
6. How will a smart car alert a driver who feels drowsy?
If the driver's eyelids clo for a certain length of time and his or her driving becomes erratic, a computer in the dashboard could alert the driver.
7. What makes it possible for smart cars to determine their approximate location?
GPS makes it possible for smart cars to determine their location on the earth to within about a hundred feet.
8. What are the prospects for applications of GPS?
With the price of microchips dropping so drastically, future applications of GPS are virtually limitless.
9. What is "telematics" expected to achieve in increasing the
efficiency and safety of highway transportation?
It is expected to put smart cars on smart highways.
10. What are traffic engineers doing on Interstate 15 clo to San Diego?
They are installing an MIT-designed system which will introduce the "automated driver".
11. What hopes do promoters of the smart highway have for its
future?
They have great hopes for its future. By 2010, telematics may well be incorporated into one of the major highways in the United States. By 2020, telematics could be adopted in thousands of highways in the United States.
12. What are the advantages of smart highways?
Smart highways could be an environmental boon, saving fuel, reducing traffic jams, decreasing air p
ollution, and rving as an alternative to highway expansion.
Page 38
Working on Your Own
1.
Part One      Paras. 1-3      New technology will have a
dramatic impact on cars and
highways in the 21st century.
Part Two Paras. 4-9 With the aid of advanced
technology, smart cars will be so
designed that they can help
eliminate traffic accidents,
determine their own preci
locations and warn of traffic
高三学习jams.氯雷他定过敏
Part Three  Paras. 10-13    GPS and "telematics" will make
it possible to build smart
highways, which will benefit us
in a number of ways.
2.图书馆借阅
1) Smart cars can e, hear, feel, smell, talk, and act;
2) They can eliminate most of car accidents;
3) They can alert the police and provide preci location of your car if stolen;
胜于无
4) They can monitor one's driving and the driving conditions nearby;
5) They can alert the driver who feels drowsy;
波音机型6) They can locate your car precily and warn of traffic jams.
Page 38
Language Sen Enhancement
1.
(1) cure        (2) impact        (3) orbiting satellites
(4) warn of      (5) location
(6) At any given time (7) vibrate (8) detected            (9) calculate  (10) converted
豁达Page 41
Vocabulary
人生就像一场梦1.
1) expansion 2) automated 3) vapor
4) take control of
5) hazards            6) satellite            7) vibrated
8) magnetic
9) bunched          10) in the air        11) got/was stuck
in  12) approximately
属鸡和属兔的合不合Page 42
2.
1) nd out        2) stand up for        3) pass for        4)

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