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

1、Unit 2 Text APage 37Pair Work1. 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 tomorrows smart cars will be sensors? Because it is sensors that will enable vehicles and roads to be able to see, hear,

2、feel, smell, talk, and act.4. How would sensors help reduce traffic fatalities? Sensors can sense if a driver is drunk and refuse 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 serious driving mistake the computer will sound an immediate warning.6. How will a smart car alert a driver who feels drowsy? If the drivers eyelids close for a certain length of time and his or her driving become

3、s 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 highwa

4、y transportation? It is expected to put smart cars on smart highways.10. What are traffic engineers doing on Interstate 15 close 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 t

5、he United States.12. What are the advantages of smart highways? Smart highways could be an environmental boon, saving fuel, reducing traffic jams, decreasing air pollution, and serving as an alternative to highway expansion.Page 38Working on Your Own1.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, determin

6、e their own precise locations and warn of traffic jams.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.2.1) Smart cars can see, hear, feel, smell, talk, and act;2) They can eliminate most of car accidents;3) They can alert the police and provide precise location of your car if stolen;4) They can monitor ones driving and the driving conditions nearby;5) They can alert the driver who feels drowsy;6) They can locate

7、 your car precisely and warn of traffic jams.Page 38Language Sense Enhancement1.(1) cure (2) impact (3) orbiting satellites (4) warn of (5) location(6) At any given time (7) vibrate (8) detected (9) calculate (10) convertedPage 41Vocabulary1.1) 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) approximatelyPage 422.1) send out 2) stand up for 3) pass for 4) were closing in on 5) starting up 6) wen

8、t through 7) fill out 8) fall intoPage 433.1) The new car design incorporates all the latest safety features.2) To suspend our hammock, we need to find two trees ten feet apart.3) Jason faces up to 10 years in prison for offering bribery money to the US navy official responsible for awarding lucrative contracts to his construction firm.4) Manufactures usually begin by building the prototype of a new model before they set up a factory to make the cars.5) Medical evidence shows that smoking and lu

9、ng cancer are correlated in all racial groups.Page 434.1) the application / remote / has turned into a reality / are poised to2) that vibrate / can detect / frequency3) lanes / are mounted in / alert a / hazardPage 44II Word Formationkilo-kilogram Medicare-medical care memo-memorandum email-electronic mailgym-gymnasium comsat-communications satellite lib-liberation newscast-news broadcastdoc-doctor skyjack-sky hijack vet-veterinarian Eurodollar-European dollarprep-preparatory brunch-breakfast and lunch auto-automobile telecast-

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