英语四级全真模拟试题一及答案.docx

1、英语四级全真模拟试题一及答案2010年12月英语四级全真模拟试题一及答案Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write a letter. You should write at least 120 words following the outline given below in Chinese:给你的外国朋友写一封信，告诉他(她)你已经被美国的一所大学录取，但你苦恼的是自己的听力和口语水平不够，你想寻求他(她)对于如何提高听力和口语的建议。Part II R

2、eading Comprehension (skimming and Scanning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1.For questions 1-7, markY (for YES) if the statement agrees with the information given in the passage;N (for NO) if the

3、 statement contradicts the information given in the passage;NG (for NOT GIVEN) if the information is not given in the passage.For questions 8-10, complete the sentences with the information given in the passage.Robot Cars to Do Battle in Desert RaceWhen 15 competitors lined up in Nevada last year fo

4、r the U.S. 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 kilometers) through the Mojave Desert.But those hopes quickly went up in a cloud of dust as most robots barely managed to ge

5、t 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 down.To robot devotees(热爱者), however, it was a minor hiccup.No surprise, then, that 43 teams showed up to try out for this y

6、ears 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 at qualifying rounds here at the California Speedway in Fontana, California. (Watch the robots in action in our exclusive vide

7、o.)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 to be even tougher than last years run. But 18 months is an eternity in the robotics world, and the technology has vastly improv

8、ed.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 U.S. dollars.When the first team out of the chute(斜道)Mojavaton, a small team out of Coloradomade it successfully around the 2.2-mile (3.5-kilometer) qualification

9、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 (DARPA), which is sponsoring the race.Unknown CourseThe aim of the Grand Challenge, Defense Department officials say, is to spur dev

10、elopment of autonomous ground vehicles that can operate in dangerous environments, such as war zones, keeping soldiers out of harms way.A U.S. Congress mandate(训令)requires that one-third of military ground vehicles drive themselves by 2015, but the technology to meet that mandate does not yet exist.

11、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 teams knows what lies ahead for this years race. DARPA wont reveal the exact route until two hours before the start of the race on S

12、aturday.But the obstacles on the Fontana qualification course-including a steelenforced tunnel that wipes out a vehicles global positioning systemare made to resemble the rugged, real-life conditions that the vehicles will have to navigate.The vehicles use sensors such as lasers, cameras, and radar

13、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 of 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. Th

14、ese 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-based Oshkosh Truck Corporation for the U.S. Marine corps.In last years race, TerraMax managed to go only 1.2 miles (2 kilometers). Team

15、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 large, 15-ton (13.5-metric ton) payload vehicle in a turn thats equivalent to that of a Humvee, he said.GhostriderThe resources of teams

16、like TerraMax 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 inventors, electricians, and even a high school team.One entry, from a Southern California team of engineers, racers, and hot-rodders, is ca

17、lled 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 against are just accessorizing conventional vehicles, said team leader Chris C.J. Pedersen, a former actor. Our vehicle is a custom-built, 21st-cent

18、ury hot rod. complete with hood scoop and exhaust coming off the side.Anthony Levandowski, a robotics builder from Berkeley, California, is back with Ghostrider, the only motorcycle robot in the qualifications. Studded with sensors and computers, it toppled (翻倒)over after 3 feet (1 meter) in last ye

19、ars 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 motorcycle robot, says his vehicle has some distinct advantages.Were smaller and go a lot more places, he said while tinkering with the robot before an

20、other 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 Ghostrider nor It Came From the Garage made the final cut this weeks qualifying races.However, another crowd-pleaser, Cajunbotor the Ragin Cajuna conv

21、erted all-terrain vehicle developed by a team from the University of Louisiana in Lafayette, did.The smart money in Saturdays race may be on Stanley, 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

22、.Even if none of the vehicles finishes the race this year, DARPAs Kurjanowicz said, the event has succeeded in galvanizing robotics developers and 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

23、 has come up with its own elegant solutions.1. The passage mainly describes the advantages and disadvantages of robot car races.2. Last years robot race in Nevada was a great success.3. It is a surprise that up to 43 teams came for this years race called the Grand Challenge.4. The Pentagons Defense

24、Advanced Research Projects Agency(DARPA) is sponsoring the race.5. The aim of the Grand Challenge is to spur development of autonomous ground vehicles.6. Ghostrider and It Came From the Garage both made the final cut at this weeks qualifying races.7. TerraMax will finish the race and win the grand p

25、rize of two million U.S. dollars.8. The obstacles on the Fontana qualification course are made to resemble the _.9. The only motorcycle robot in the qualifications is _.10. The only vehicle that didnt hit an obstacle in the trial runs is _.Part III Listening Comprehension (35 minutes)Section ADirect

26、ions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause

27、, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.11. A At the department store. C In the restaurant.B At the office. D In the drug store.12. A The man shouldnt expect

28、 her to go along.B She doesnt think she has enough money.C Shell go even though the movie is bad.D The man should count the number of people going.13. A She wasnt really studying.B She hadnt finished writing her articles.C She had furnished her house.D She could write beautifully.14. A The problem m

29、ay have been a very complicated one.B No one can do it.C The woman thinks that the problem is too easy.D The man can solve the problem himself.15. A The janitor is too busy to do his work.B The sanitary conditions of an apartment.C The relationship between the janitor and the two speakers.D The arch

30、itecture of a building.16. A He cant tear either piece of cloth. C The pieces of cloth are made by a secret process.B He wants part of each piece of cloth. D The pieces of cloth seem identical to him.17. A Tuesday. C Thursday.B Wednesday. D Friday.18. A A photographers camera. C A movie camera.B A t

31、elevision camera. D The mans own camera.Questions 19 to 22 are based on the conversation you have just heard.19. A Memories of a recent storm. C Weather patterns that can affect Florida.B How strong winds develop into a hurricane. D Planning a summer vacation.20. A Late summer is sunny season. C Late summer is rainy season.B Late summer is hurricane season. D Late summer is cloudy season.21. A Wind speed. C Water temperature.B Rainfall.