1、大学英语六级 12及答案解析(总分：448.02，做题时间：135 分钟)一、Part I Writing (3(总题数：1，分数：30.00)1.For this part, you are allowed 30 minutes to write a composition on the topic Aging of the Population. You should write at least 150 words according to the outline given below in Chinese: 1. 我国人口老龄化现象日趋严重； 2. 人口老龄化给社会、家庭带来越来越多
2、的负担； 3. 如何妥善解决人口老龄化问题。 （分数：30.00）_二、Part II Reading C(总题数：1，分数：71.00)Space Tourism Make your reservations now. The space tourism industry is officially open for business, and tickets are going for a mere $20 million for a one-week stay in space. Despite reluctance from National Air and Space Adminis
3、tration (NASA) , Russia made American businessman Dennis Tito the worlds first space tourist. Tito flew into space aboard a Russian Soyuz rocket that arrived at the International Space Station (ISS) on April 30, 2001. The second space tourist, South African businessman Mark Shuttleworth, took off ab
4、oard the Russian Soyuz on April 25,2002, also bound for the ISS. Lance Bass of N Sync was supposed to be the third to make the $20 million trip, but he did not join the three-man crew as they blasted off on October 30,2002, due to lack of payment. Probably the most incredible aspect of this proposed
5、 space tour was that NASA approved of it. These trips are the beginning of what could be a profitable 21st century industry. There are already several space tourism companies planning to build suborbital vehicles and orbital cities within the next two decades. These companies have invested millions,
6、 believing that the space tourism industry is on the verge of taking off. In 1997, NASA published a report concluding that selling trips into space to private citizens could be worth billions of dollars. A Japanese report supports these findings, and projects that space tourism could be a $10 billio
7、n per year industry within the next two decades. The only obstacles to opening up space to tourists are the space agencies, who are concerned with safety and the development of a reliable, reusable launch vehicle. Space Accommodations Russias Mir space station was supposed to be the first destinatio
8、n for space tourists. But in March 2001, the Russian Aerospace Agency brought Mir down into the Pacific Ocean. As it turned out, bringing down Mir only temporarily delayed the first tourist trip into space. The Mir crash did cancel plans for a new reality-based game show from NBC, which was going to
9、 be called Destination Mir. The Survivor-like TV show was scheduled to air in fall 2001. Participants on the show were to go through training at Russias cosmonaut (宇航员) training center, Star City. Each week, one of the participants would be eliminated from the show, with the winner receiving a trip
10、to the Mir space station. The Mir crash has ruled out NBCs space plans for now. NASA is against beginning space tourism until the International Space Station is completed in 2006. Russia is not alone in its interest in space tourism. There are several projects underway to commercialize space travel.
11、 Here are a few of the groups that might take tourists to space: -Space Island Group is going to build a ring-shaped, rotating “commercial space infrastructure (基础结构)“ that will resemble the Discovery spacecraft in the movie “2001: A Space Odyssey. “Space Island says it will build its space city out
12、 of empty NASA space-shuttle fuel tanks (to start, it should take around 12 or so) , and place it about 400 miles above Earth. The space city will rotate once per minute to create a gravitational pull one-third as strong as Earths. -According to their vision statement, Space Adventures plans to “fly
13、 tens of thousands of people in space over the next 10-15 years and beyond, around the moon, and back, from spaceports both on Earth and in space, to and from private space stations, and aboard dozens of different vehicles.“ -Even Hilton Hotels has shown interest in the space tourism industry and th
14、e possibility of building or co-funding a space hotel. However, the company did say that it believes such a space hotel is 15 to 20 years away. Initially, space tourism will offer simple accommodations at best. For instance, if the International Space Station is used as a tourist attraction, guests
15、wont find the luxurious surroundings of a hotel room on Earth. It has been designed for conducting research, not entertainment. However, the first generation of space hotels should offer tourists a much more comfortable experience. In regard to a concept for a space hotel initially planned by Space
16、Island, such a hotel could offer guests every convenience they might find at a hotel on Earth, and some they might not. The small gravitational pull created by the rotating space city would allow space-tourists and residents to walk around and function normally within the structure. Everything from
17、running water to a recycling plant to medical facilities would be possible. Additionally, space tourists would even be able to take space walks. Many of these companies believe that they have to offer an extremely enjoyable experience in order for passengers to pay thousands, if not millions, of dol
18、lars to ride into space. So will space create another separation between the haves and have-nots? The Most Expensive Vacation Will space be an exotic retreat reserved for only the wealthy? Or will middle-class folks have a chance to take their families to space? Make no mistake about it, going to sp
19、ace will be the most expensive vacation you ever take. Prices right now are in the tens of millions of the dollars. Currently, the only vehicles that can take you into space are the space shuttle and the Russian Soyuz, both of which are terribly inefficient. Each spacecraft requires millions of poun
20、ds of fuel to take off into space, which makes them expensive to launch. One pound of payload (有效载重) costs about $10,000 to put into Earths orbit. NASA and Lockheed Martin are currently developing a single-stage-to-orbit launch space plane, called the Venture-Star, that could be launched for about a
21、 tenth of what the space shuttle costs to launch. If the Venture-Star takes off, the number of people who could afford to take a trip into space would move into the millions. In 1998, a joint report from NASA and the Space Transportation Association stated that improvements in technology could push
22、fares for space travel as low as $50,000, and possibly down to $20,000 or $10,000 a decade later. The report concluded that at a ticket price of $50,000, there could be 500,000 passengers flying into space each year. While still leaving out many people, these prices would open up space to a tremendo
23、us amount of traffic. Since the beginning of the space race, the general public has said, “Isnt that great when do I get to go?“ Well, our chance might be closer than ever. Within the next 20 years, space planes could be taking off for the Moon at the same frequency as airplanes flying between New Y
24、ork and Los Angeles. （分数：71.00）(1).Lance Bass wasnt able to go on a tour of space because of health problems.（分数：7.10）A.YB.NC.NG(2).Several tourism companies believe space travel is going to be a new profitable industry.（分数：7.10）A.YB.NC.NG(3).The space agencies are reluctant to open up space to tour
25、ists.（分数：7.10）A.YB.NC.NG(4).Two Australian billionaires have been placed on the waiting list for entering space as private passengers.（分数：7.10）A.YB.NC.NG(5).The prize for the winner in the fall 2001 NBC TV game show would have been_.（分数：7.10）_(6).Hilton Hotels believes it wont be long before it is p
26、ossible to build a_.（分数：7.10）_(7).In order for space tourists to walk around and function normally, it is necessary for the space city to create a_.（分数：7.10）_(8).What makes going to space the most expensive vacation is the enormous cost involved in_.（分数：7.10）_(9).Each year 500,000 space tourists cou
27、ld be flying into space if ticket prices could be lowered to_.（分数：7.10）_(10).Within the next two decades, _could be as common as intercity air travel.（分数：7.10）_三、Listening Comprehens(总题数：1，分数：15.00)A.He is confident.B.He is worried.C.He is bored.D.He is angry.A.Compare her own paper with others.B.Wa
28、tch out for the usual typing mistakes.C.Have someone else type her paper.D.Ask another person to check her work.A.Jealous.B.Indignant.C.Negative.D.Proud.A.She doesnt like the way the professor lectures.B.Shes having a hard time following the professors lectures.C.She is not interested in course.D.Sh
29、es having difficulty with the heavy reading assignments.A.Hes going to help the woman bake her cake.B.He is going to buy some cake.C.He is going to sweep the study floor.D.He will get a broom and dust pan to clean up the floor.A.The man can have his camera fixed here.B.The woman will probably fix th
30、e mans camera herself.C.The man will buy a new camera.D.The woman suggests that the camera should have been brought in earlier.A.She thinks big parties are too impersonal.B.She would like to invite friends to a big party.C.She feels she has to spend a lot of money in holding big parties.D.She would
31、like to be invited to small parties.A.He thinks that they are of inferior quality.B.He thinks that they are a bargain.C.He thinks that they are overpriced.D.He thinks that they can be purchased at a cheaper price elsewhere.四、Section A(总题数：2，分数：10.00)A.How she is able to look younger and more energet
32、ic than her age.B.What is the best age of ones life and how she feels about her age.C.How people in their 20s and 30s differ in their attitudes toward what to do with their lives.D.Why people buy expensive face creams and if they really work.A.People between 25 and 30 dont want to talk about the con
33、sequences of what they do.B.People between 25 and 30 often fail to do anything because of lack of experience.C.People who are a bit older are more mature and are more likely to succeed.D.People who are a bit older tend to hesitate before deciding what to do.A.She is very vain.B.She tries very hard t
34、o hide her real age from others.C.She had a good life when she was younger and still feels young at heart.D.She is no longer young but she manages to look younger by using expensive face creams.A.A new fuel for buses.B.The causes of air pollution.C.A way to improve fuel efficiency in buses.D.Careers
35、 in environmental engineering.A.Her car is being repaired.B.She wants to help reduce pollution.C.Parking is difficult in the city.D.The cost of fuel has increased.A.A fuel that burns cleanly.B.An oil additive that helps cool engines.C.A material from which filters are made.D.An insulating material s
36、prayed on engine parts.A.The high temperatures required for its use.B.The high cost of materials used in its production.C.The lack of trained environmental engineers.D.The opposition of automobile manufacturers.五、Section B(总题数：3，分数：30.00)A.Separate houses were built for storing ice.B.Double walls we
37、re built in icehouses to keep cool.C.Blocks of ice were packed with hay in icehouses.D.Ice was put into icehouses in winter.A.The ice was cut and handled with the help of some special tools.B.The ice was taken from the flowing river with hooks and carried by sleds to icehouses.C.The ice was carried
38、on the frozen surface of the pond or river.D.The ice was sawed into even blocks by workers.A.Saws, choppers, axes, tongs, hooks.B.Axes, saws, choppers, tongs, hooks.C.Choppers, axes, saws, hooks, tongs.D.Axes, saws, choppers, hooks, tongs.A.The smell of the food.B.The quality of the food.C.The dista
39、nce of the food.D.The amount of the food.A.The direction to fly in.B.The distance to fly.C.The height to fly.D.The kind of food to find.A.Diligent.B.Interesting.C.Creative.D.Cooperative.A.She felt proud.B.She felt satisfied.C.She felt delighted.D.She felt surprised.A.She was asked to call the chairm
40、ans wife.B.She was asked to make a copy of English final exam.C.She was asked to go to the chairmans wifes office.D.She was asked to retake the final exam.A.Because she was a black girl.B.Because she got the highest average in the class.C.Because she wanted to hit the chairmans wife.D.Because she re
41、fused to retake the exam.六、Section C(总题数：1，分数：10.00)More and more, the operations of our businesses, governments, and (36) 1institutions are controlled by information that exists only inside computer memories. Anyone clever enough to (37) 2 this information for his own purposes can reap (收割) substan
42、tial rewards. Even worse, a number of people who have done this and been caught at it have (38) 3 to get away without punishment. Its easy for computer crimes to go (39) 4 if no one checks up on what the computer is doing. But even if the crime is detected, the criminal may walk away not only unpuni
43、shed but with a glowing (40) 5from his former employers. Of course, we have no (41) 6on crimes that go undetected. But its (42) 7to note how many of the crimes we do know about were detected by accident, not by systematic inspections or other (43) 8procedures. The computer criminals who have been ca
44、ught may be the victims of uncommonly bad luck. For example, a certain keypunch operator complained of having to stay overtime to punch extra cards. Investigation revealed that the extra cards she was being asked to punch were for dishonest transactions. (44) 9. Unlike other lawbreakers, who must le
45、ave the country, commit suicide, or go to jail, (45) 10. All too often, their demands have been met. Why? (46) 11. They hesitate at the thought of a criminal boasting in open of how he juggled the most confidential records right under the noses of the companys executives, accountants, and staff. And
46、 so another computer criminal departs with just the s he needs to continue his crimes elsewhere. （分数：10.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_七、Reading Comprehensio(总题数：2，分数：177.00)In the villages of the English countryside there are still people who remember the good old days when no one bothered to lock their doors. There simply wasnt any crime to worry about. Amazingly, these happy times appear still to be with us in the worlds biggest community. A new study by Dan Farmer, a gifted programmer, using an automated investigative program of his
