（第二版）全新版大學英語綜合教程4Unit2課后答案
Smart Cars：“智能汽車”是本單元的主題，下面是小編分享的課后答案，歡迎閱讀!
Unit 2
Text A
Language Sense Enhancement
1. care 2. impact 3. orbiting satellites 4. warn of 5. location 6. at any given time 7. vibrate 8. detected 9. calculate
10. converted
Language Focus
Vocabulary
I.
4. 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
5. 1) send out 2) stand up for 3) pass for 4) were closing in on 5)starting up 6)went through 7) fill out 8) fall
into
6. 1) incorporates all the latest safety features
2) two trees ten feet apart
3) awarding lucrative 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
4. 1) the application/ has turned into a reality/ are poised to
2) that vibrate/can detect/frequency
3) lanes/are mounted in/alert a /hazard
II. Word Formation
Clipped Words: kilogram/memorandum/gymnasium/liberation/doctor/veterinarian/preparatory/ automobile/influenza
Blends: medical care/electronic mail/communications satellite/news broadcast/sky hijack/ European dollar/breakfast and lunch/television broadcast/Oxford and Cambridge
III. Usage
1) swimming pool 2) drawing board 3) enriched Middle English 4) disturbing change 5) fully developed prototype 6) canned food 7) working population 8) puzzling differences
Comprehensive Exercises
I.
3. 1) computerized 2) start up 3) be poised to 4) alert 5) hazards 6) monotonous 7) take control of 8) steer 9) lane 10)
decrease 11) calculate 12) getting stuck in 14) mounted 15) detect 16) vapor
4. 1) generates 2) related 3)revolutionized 4) enable 5) opportunities 6) overall 7) manufacturing 8) dependent
9) interact 10) fatalities
II.
3. 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
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.
4. Automobiles have, since their invention, revolutionized transportation, changing forever the way people travel, and do
business. On the other hand, they have brought hazards, especially highway fatalities. However, today the application of computer technology and electronic 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.
Text B
Comprehension Check
2. a c c d b b
Translation
5. 這類系統易受氣候變化的影響， 提供的數據不夠精確，但他們不需要特別的道路設施，只需要將車道標志維護好
就行了。
6. 然而，不用多久，其成本就能為廣大車輛擁有者和駕駛者所接受，尤其是目前不少可以應用的技術已經走向市場，
開始了批量生產。
7. 電子駕駛應用的最大障礙可能在于人們普遍認為認為這一技術的應用比實際情況更困難，更昂貴。
8. 考慮到這些運用安全自動化交通運輸系統的經驗，開發由自動控制系統操縱的公路車輛算不上什么大的飛躍。 Language Practice
3. c a e b f g d h
4. 1) en route 2) matures 3) equivalent 4) feasible 5) in cooperation with 6) exposure
7) at the start of 8) thereby 9) implemented 10) realistic 11) component 12) by means of
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