大学四级-1789及答案解析.doc

1、大学四级-1789 及答案解析(总分：712.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：106.00)1.Directions : For this part, you are allowed 30 minutes to write a short essay entitled My View on Writing a Blog. You should write at least 120 words following the outline given below.1. 越来越多的大学生写博客；2. 人们对此看法各异；3. 我的观点。_（分数：106.00

2、二、Part Reading Compr(总题数：1，分数：70.00)Robot Cars to Do Battle in Desert RaceWhen 15 competitors lined up in Nevada last year for the US Defense Departments first million-dollar robot race, hopes were high. The challenge: to drive a vehicle without a human driver or remote control some 150 miles (241

3、 kilometers) through the Mojave Desert.But those hopes quickly went up in a cloud of dust as most robots barely managed to get off the starting line. The best performer, a modified Humvee built by engineers at Pennsylvanias Carnegie Mellon University, traveled 7 miles (11 kilometers) before breaking

4、 down.To robot devotees(热爱者), however, it was a minor problem.No surprise, then, that 43 teams showed up to try out for this years race, dubbed(被称作) the Grand Challenge. For the past week, teams ranging from garage enthusiasts to well-funded university engineers have been fine-tuning their machines

5、at qualifying rounds here at the California Speedway in Fontana, California. (Watch the robots in action in our exclusive video. )Twenty-three finalists were announced Thursday for Saturdays Grand Challenge. The 175-mile (282-kilometer) course starts and finishes in Primm, Nevada.The race promises t

6、o be even tougher than last years run. But 18 months is an eternity in the robotics world, and the technology has vastly improved.Organizers believe several teams have a real shot of finishing the race in less than ten hours to earn the grand prize of two million US dollars.“When the first team out

7、of the chute (斜道)-Mojavaton, a small team out of Colorado-made it successfully around the 2.2-mile (3.5-kilometer) qualification course, I “knew right there and then that we had something special,“ said Ron Kurjanowicz, the chief of staff for the Pentagons Defense Advanced Research Projects Agency (

8、DARPA), which is sponsoring the race.Unknown CourseThe aim of the Grand Challenge, Defense Department officials say, is to spur development of autonomous ground vehicles that can operate in dangerous environments, such as war zones, keeping soldiers out of harms way.A US Congress mandate(训令) require

9、s that one-third of military ground vehicles drive themselves by 2015, but the technology to meet that mandate does not yet exist.So the government looked to enterprising teams to develop the technology for driverless vehicles, sweetening its offer with the two-million-dollar purse.None of the 23 te

10、ams knows what lies ahead for this years race. DARPA wont reveal the exact route until two hours before the start of the race on Saturday.But the obstacles on the Fontana qualification course-including a steel-enforced tunnel that wipes out a vehicles global positioning system-are made to resemble t

11、he rugged, real-life conditions that the vehicles will have to navigate.The vehicles use sensors such as lasers, cameras, and radar to help them avoid obstacles such as rocks and cliffs. The computers brain has to figure out how to resolve unexpected conflicts, like a boulder sitting in the middle o

12、f the road.“Think about all the decisions that you and I have to make when we drive from our house to the store,“ Kurjanowicz said. “These vehicles have to do the same thing, without a driver. “Among the top contenders in Saturdays race is TerraMax, a massive truck originally built by the Wisconsin-

13、based Oshkosh Truck Corporation for the US Marine corps.In last years race, TerraMax managed to go only 1.2 miles (2 kilometers). Team leader Gary Schmiedel expects to do much better this year. He pointed to the new all-wheel steering feature on the truck as an important addition.“We can move this l

14、arge, 15-ton (13. 5-metric ton) payload vehicle in a turn thats equivalent to that of a Humvee,“ he said.GhostriderThe resources of teams like Terra Max or Carnegie Mellon University, which has two vehicles in the race this year, are a far cry from those of some of the other competitors, including i

15、nventors, electricians, and even a high school team.One entry, from a Southern California team of engineers, racers, and hot-rodders, is called It Came from the Garage. It has a beer keg(小桶) stuck on the back and an on-off switch that says “brain“.“Most of the schools and organizations were up again

16、st are just accessorizing conventional vehicles,“ said team leader Chris “C. J. “ Pedersen, a former actor. “Ours is a custom-built, 21st-century hot rod complete with hood scoop and exhaust coming off the side. “Anthony Levandowski, a robotics builder from Berkeley, California, is back with Ghostri

17、der, the only motorcycle robot in the qualifications. Studded with sensors and computers, it toppled(翻倒) over after 3 feet (1 meter) in last years race.Levandowski, who had to postpone his graduate studies when he couldnt find a faculty advisor who believed it would be possible to build the motorcyc

18、le robot, says his vehicle has some distinct advantages.“Were smaller and go a lot more places,“ he said while tinkering with the robot before another trial run. “Were also a lot less expensive. This bike costs as much as a tire or a wheel of some of these other guys machines. “Smart MoneyNeither Gh

19、ostrider nor It Came from the Garage made the final cut at this weeks qualifying races.However, another crowd-pleaser, Cajunbot-or the Ragins Cajun-a converted all-terrain vehicle developed by a team from the University of Louisiana in Lafayette, did.Thesmart money in Saturdays race may be on Stanle

20、y, a converted Volkswagen Touareg made by a team at Californias Stanford University. It was the only vehicle that didnt hit an obstacle in the trial runs.Even if none of the vehicles finishes the race this year, DARPAs Kurjanowicz said, the event has succeeded in galvanizing robotics developers and

21、pushing the creation of new technologies.“The beauty of the Grand Challenge is that it doesnt tell people how to solve the problem,“ he said. “The community has come up with its own elegant solutions. /（分数：70.00）(1).The passage mainly describes the advantages and disadvantages of robot car races.（分数

22、7.00）填空项 1:_(2).Last years robot race in Nevada was a great success.（分数：7.00）填空项 1:_(3).It is a surprise that up to 43 teams came for this years race called the Grand Challenge.（分数：7.00）填空项 1:_(4).The Pentagons Defense Advanced Research Projects Agency (DARPA) is sponsoring the race.（分数：7.00）填空项 1:

23、5).The aim of the Grand Challenge is to spur development of autonomous ground vehicles.（分数：7.00）填空项 1:_(6).Ghostrider and It Came From the Garage both made the final cut at this weeks qualifying races.（分数：7.00）填空项 1:_(7).TerraMax will finish the race and win the grand prize of two million US dolla

24、rs.（分数：7.00）填空项 1:_(8).The obstacles on the Fontana qualification course are made to resemble the_（分数：7.00）填空项 1:_(9).The only motorcycle robot in the qualifications is_（分数：7.00）填空项 1:_(10).The only vehicle that didnt hit an obstacle in the trial runs is_（分数：7.00）填空项 1:_三、Part Listening Com(总题数：0，分数

25、0.00)四、Section A(总题数：4，分数：105.00)(1).A. The man is out of shape. B. The man doesnt need a new racket.C. The man also needs new tennis shoes. D. The man spent too much on his tennis shoes.（分数：7.00）A.B.C.D.(2).A. She prefers chemistry. B. She hasnt got a partner yet.C. She is too tired of chemistry.

26、D. She is too busy to work on her chemistry.（分数：7.00）A.B.C.D.(3).A. Customer and waitress. B. Teacher and student.C. Boss and secretary. D. Lawyer and client.（分数：7.00）A.B.C.D.(4).A. He was satisfied with the service on the ship. B. It was the first time he had been abroad.C. He had never been on a w

27、arship. D. He has been on the warship before.（分数：7.00）A.B.C.D.(5).A. He is confident. B. He is worried. C. He is bored. D. He is angry.（分数：7.00）A.B.C.D.(1).A. The woman offered to help the man find his box.B. The man doesnt know where to go.C. The woman will buy the mans lunch for him.D. The woman w

28、ill give the man a treatment.（分数：7.00）A.B.C.D.(2).A. Its enjoyable. B. Its terrific. C. Its too modem. D. Its old-fashioned.（分数：7.00）A.B.C.D.(3).A. Near the stairs. B. On the platform.C. At the ticket office. D. At the information desk.（分数：7.00）A.B.C.D.Questions 19 to 21 are based on the conversatio

29、n you have just heard.（分数：21.00）(1).A. In a college bookstore. B. In a lecture hall.C. In a library. D. In a dormitory.（分数：7.00）A.B.C.D.(2).A. English. B. Biology.C. Introduction to English Literature. D. A required course.（分数：7.00）A.B.C.D.(3).A. He lives on the 10th floor of Butler Hall. B. He neve

30、r wants to listen to students.C. He used to teach biology. D. He is an excellent professor.（分数：7.00）A.B.C.D.Questions 22 to 25 are based on the conversation you have just heard.（分数：28.00）(1).A. When to move. B. Where to live the following year.C. How much time to spend at home. D. Whose house to vis

31、it.（分数：7.00）A.B.C.D.(2).A. Take some money to the housing office. B. Inform the director of student housing in a letter.C. Fill out a form in the library. D. Maintain a high grade average（分数：7.00）A.B.C.D.(3).A. Both live on campus.B. Both live off campus.C. The man lives on campus; the woman lives o

32、ff campus.D. The woman lives on campus; the man lives off campus.（分数：7.00）A.B.C.D.(4).A. Grades. B. Privacy. C. Sports. D. Money.（分数：7.00）A.B.C.D.五、Section B(总题数：3，分数：70.00)Passage OneQuestions 26 to 28 are based on the passage you have just heard.（分数：21.00）(1).A. The importance of advertisement. B.

33、 The societys great need of advertisement.C. The origin of advertisement. D. The prosperity of advertisement.（分数：7.00）A.B.C.D.(2).A. The local governments. B. Their owners families.C. Advertisements. D. The audience.（分数：7.00）A.B.C.D.(3).A. Advertising is personal. B. Advertisements are convincing.C.

34、 Advertisements are unreliable. D. Advertisements are misleading.（分数：7.00）A.B.C.D.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.（分数：21.00）(1).A. The games shouldnt be held in Salt Lake City. B. The games have met their environmental goals.C. The games did little to prote

35、ct the environment. D. The games have caused lasting damages to the area.（分数：7.00）A.B.C.D.(2).A. Sports competition. B. Cultural exchange.C. Economic development. D. Environmental protection.（分数：7.00）A.B.C.D.(3).A. Building ski jumps farther away from the city. B. Developing better public transporta

36、tion in the city.C. Planting more trees around the fields. D. Promoting the use of cleaner energy.（分数：7.00）A.B.C.D.Passage Three（分数：28.00）(1).A. Diet. B. Weight control.C. Aerobic exercise. D. Eating habits and exercise.（分数：7.00）A.B.C.D.(2).A. Nuts. B. Sugar. C. Vegetable oil. D. Dairy products.（分数：

37、7.00）A.B.C.D.(3).A. Forty or fifty minutes of exercise once a week.B. Twenty or thirty minutes of exercise every day.C. Fifteen or twenty minutes of exercise five days a week.D. Thirty or forty minutes of exercise three or four days a week.（分数：7.00）A.B.C.D.(4).A. Carbohydrates. B. Indirect fat. C. B

38、ody fluid. D. Fat.（分数：7.00）A.B.C.D.六、Section C(总题数：1，分数：77.00)Today, students who want to learn English in the US have a wide choice of courses and institutions to (36) from. And, because the US is such a big country, they also have a huge (37) of locations in which to study. The US has a long (38)

39、of teaching English because, (39) its history, the country has welcomed (40) from all over the world, most of whom have needed to learn English. Today, the USs English language teaching sector is well developed and its teachers are highly qualified and (41) American universities and colleges welcome

40、 many thousands of (42) students each year, who (43) on degree or post graduate courses. (44) These courses are called Intensive English Language Programs and (45) . In addition to language tuition, Intensive English Language Programs give students (46) （分数：77.00）(1).Today, students who want to lear

41、n English in the US have a wide choice of courses and institutions to (36) from. And, because the US is such a big country, they also have a huge (37) of locations in which to study. The US has a long (38) of teaching English because, (39) its history, the country has welcomed (40) from all over the

42、 world, most of whom have needed to learn English. Today, the USs English language teaching sector is well developed and its teachers are highly qualified and (41) American universities and colleges welcome many thousands of (42) students each year, who (43) on degree or post graduate courses. (44)

43、These courses are called Intensive English Language Programs and (45) . In addition to language tuition, Intensive English Language Programs give students (46) （分数：7.00）填空项 1:_(2).Today, students who want to learn English in the US have a wide choice of courses and institutions to (36) from. And, be

44、cause the US is such a big country, they also have a huge (37) of locations in which to study. The US has a long (38) of teaching English because, (39) its history, the country has welcomed (40) from all over the world, most of whom have needed to learn English. Today, the USs English language teach

45、ing sector is well developed and its teachers are highly qualified and (41) American universities and colleges welcome many thousands of (42) students each year, who (43) on degree or post graduate courses. (44) These courses are called Intensive English Language Programs and (45) . In addition to l

46、anguage tuition, Intensive English Language Programs give students (46) （分数：7.00）填空项 1:_(3).Today, students who want to learn English in the US have a wide choice of courses and institutions to (36) from. And, because the US is such a big country, they also have a huge (37) of locations in which to

47、study. The US has a long (38) of teaching English because, (39) its history, the country has welcomed (40) from all over the world, most of whom have needed to learn English. Today, the USs English language teaching sector is well developed and its teachers are highly qualified and (41) American uni

48、versities and colleges welcome many thousands of (42) students each year, who (43) on degree or post graduate courses. (44) These courses are called Intensive English Language Programs and (45) . In addition to language tuition, Intensive English Language Programs give students (46) （分数：7.00）填空项 1:_(4).Today, students who want to learn English in the US have a wide choice of courses and institutions to (36) from. And, because the US is such a big country, they also have a huge (37) of locations in which to