全整编汇总大学英语第二版综合教学教程4课后答案解析unit2.ppt

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1、全新版大学英语第二版综合教程第四册课后答案,Unit 2,G R _ Part Division of the Text 1,Parts,Para(s),Main Ideas,1,13,2,49,New technology will have a dramatic impact on cars and highways in the 21st century.,With the aid of advanced technology, smart cars will be so designed that they can help eliminate traffic accidents, d

2、etermine their own precise locations and warn of traffic jams.,3,1013,GPS and “telematics” will make it possible to build smart highways, which will benefit us in more than one way.,Text org. Ex. 1 on P38,Text org. Ex. 2 On P38 1. Smart cars can see, hear, feel, smell, talk, and act; 2. They can eli

3、minate 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 your car precisely and warn of traffic jams.,Language Sen

4、se Enhancement on P 38-39,1) cure 2) impact 3) orbiting 4) warn of 5) location 6) At any given time 7)vibrate 8) detected 9) calculate 10) converted I. Vocabulary: Ex.1 on P41-42 1.expansion 2. automated 3. vapor 4. take control of 5. hazards 6. satellite 7.vibrated 8.magnetic 9. bunched 10. in the

5、air 11. got stuck in 12.approximately Vocabulary: Ex.2 on P42 1. send out 2. stand up for 3. pass for 4. were closing in on 5. starting up 6. went through 7. fill out8. fall into,Vocabulary: Ex.3 on P43 1) incorporates all the latest safety features. 2) two trees ten feet apart. 3) awarding lucrativ

6、e contracts to his construction firm. 4) the prototype of a new model before they set up a factory to make the cars. 5) are correlated in all racial groups. Vocabulary: Ex.4 on P43 1) the application, remote, has turned into a reality, are poised to 2) that vibrate, can detect, frequency 3) lanes, a

7、re mounted in, alert a, hazard,II. Word Formation on P45,KilogramMedical care MemorandumElectronic mail GymnasiumCommunications satellite LiberationNews broadcast DoctorSky hijack VeterinarianEuropean dollar PreparatoryBreakfast and lunch AutomobileTelevision broadcast influenzaOxford and Cambridge,

8、III. Usage on P45-46,1) swimming pool 2 ) drawing board 3 ) enriched Middle English 4 ) disturbing change 5 ) fully developed prototype 6 ) Canned foods 7 ) working population 8 ) puzzling differences,Comprehensive Exs.: I. cloze,1. text-related on P46 1) computerized 2) start up 3) be poised to 4)

9、alert 5) hazards 6) monotonous 7) take control of 8) steer 9) lane 10) decrease 11) calculate 12) eliminate 13) getting stuck in 14) mounted 15) detect 16) vapor 2. theme-related on P47 1) generates 2) related 3) revolutionized 4) enabled 5) opportunities 6) overall 7)manufacturing 8) dependent 9) i

10、nteract 10) fatalities,II. Translation,Ex. 1 on P47-48 1) There was an unusual quietness in the air, except for the sound of artillery in the distance. 2) The expansion of urban areas in some African countries has been causing a significant fall in living standards and an increase in social problems

11、. 3) The research shows that atmospheric carbon dioxide levels are closely correlated with global temperatures. 4) The frequency of the bus service has been improved from 15 to 12 minute recently. 5) The diver stood on the edge of the diving board, poised to jump at the signal from the coach.,Transl

12、ation : Ex. 2 on P48,Automobiles have, since their invention, revolutionized transportation, changing forever the way people live, travel, and do business. On the other hand, they have brought hazards, especially highway fatalities. However, today the application of computer technology and electroni

13、c sensors in designing and manufacturing cars makes it possible to eliminate most of traffic accidents. For example, electronic sensors mounted in your car can detect alcohol vapor in the air and refuse to start up the engine. They can also monitor road conditions by receiving radio signals sent out from orbiting satellites and greatly reduce your chances of getting stuck in traffic jams.,