大学英语二级词汇6

1、 6How old is “old”? The answer has changed over the years. Two hundred years ago, you were told at 35. That was the average life expectancy (平均寿命) then. At the turn of this century, as medical knowledge advanced, the average life span increased to 45. In 1950, 70- year-olds were really old. Today, a

2、 healthy 70-year-old is looking forward to many more active years. So, how old is old? The answer is one youve heard many times, from all sorts of people. “You are old (or young) as you feel.” The calendar simply tells you how many years you have lived. Your body tells you how well youve lived.“Yout

3、h,” wrote an anonymous author, “is not a time of life it is a state of mind. Nobody grows old by living a number of years; people grow old by deserting their ideals.”There are many myths about aging. These myths stereotype (固定思维) people on the basis of age. Here are some of the more common myths and

4、 the facts.Myth: Most older people are in poor health.Fact: Not so. There are neither biological nor physiological reasons to connect poor health with growing older. Older people are more likely to be affected with illness and physical disabilities than you are, but old age itself is not a disease.

5、Myth: When you get old, you become senile.Fact: Older minds can be as bright as young minds. Senility is a sign of disease; it is not part of the normal aging process. In a 1985 study of men ages 20, 40, 60 and 80 years, no evidence was found to indicate that aging was associated with an inevitable

6、decline in intellectual performance. (68%)1. This passage is mainly about _.A) the average life span B) agingC) senility D) some incorrect concepts2. According to the article, which statement is True?A) Older people are not as smart as young people.B) Aging does not mean you become unhealthy.C) Most

7、 older people are physically fit.D) When you get old, you become senile.3. Which question is NOT answered in the article?A) What is the average life span today?B) Is senility a normal part of aging?C) What are some common myths? D) What was the average life-span 200 years ago?4. By explaining the my

8、th “Most older people are in poor health”, the author wants to imply that _.A) its impossible to remain good health throughout your lifeB) its possible to remain physically fit throughout your life. C) older people are more unlikely to be affected with illnessD) older people are more likely to be af

9、fected by illness than young people5. We can learn from the passage that _.A) aging was connected with the inevitable decline in intellectual performanceB) there was no evidence to show that aging was connected with an unavoidable decline in intellectual performanceC) most people became senile when

10、they get oldD) the average life span is 35 in 1900 7Are you short? Tall? Do you like pumpkins but hate mayonnaise (蛋黄酱)? Whatever your interests, theres a club, society, or group for you. America is home to about 25,000 clubs, associations, federations, societies, fraternal organizations, and other

11、groups that all sorts of people join. If you are very short, there are the “Short Stature Foundation” and the “Little People of America.” If youre tall, there are dozens of clubs for tall people.If you cant stand mayo, theres the “I Hate Mayonnaise” club; members get the No Mayo newsletter, and a li

12、st of mayo-free restaurants.Many people claim to have seen the rock star Elvis Presley, even after his death in 1977. Maybe thats because so many people dress up and act like Elvis. Some of them formed the “Elvis Presley Impersonators Association International”.If you like to sing along through a mi

13、crophone as you listen to music, you might consider the Karaoke International Sing-Along Association.The “International Organization of Nerds” (生活无聊的人) has more than 10,000 members. It is led by a man in Cincinnati, Ohio, who calls himself the Supreme Arch nerd. He says membership may be for you if

14、your eye glasses are held together with tape, you keep at least 37 ball-point pens in a plastic pocket protector, and you wear slacks and shirts of clashing plaids (格子花纹).Many clubs are devoted to food. The “International Banana Club” wants people everywhere to smile more in a world that is “going b

15、ananas.” (变得野蛮或疯狂) The club has a library and museum of about 12,000 important banana artifacts. The “International Pumpkin Association” is devoted to growing giant pumpkins. “Slow Food Foundation” is a club that objects to fast-food places and promotes the joy of leisurely dining.Because so many pe

16、ople love animals, there are many clubs to protect favored creatures. For instance, “Bat Conservation International” wants people to know about the many good points of bats. One example: Bats eat tons of insects, which would otherwise bug people.1. The clubs mentioned in the article are _.A) for ser

17、ious people onlyB) for funC) expensive to joinD) only for young people2. The purpose of this article is to show that _.A) most clubs in the U.S. are for young peopleB) there are many different kinds of clubs in the U.S.C) most Americans join clubsD) usual clubs in the U.S.3. Members of the “Slow Foo

18、d Foundation” _.A) never eat at homeB) dont like fast-food restaurantC) rarely go to restaurantsD) can eat everywhere4. People in the “International Banana Club” think that _. A) people nowadays are not happyB) banana can make people smile moreC) banana is a favorite food for allD) banana can make t

19、his world go bananas 5. According to the passage, how many different clubs are there in the U.S.?A) About 12,000B) Not mentioned in the passageC) DozensD) About 25,000(0.64)Every human being, no matter what he is doing, gives off body heat. The usual problem is how to get rid of it. But the designer

20、s of the Johnstown campus of the University of Pittsburgh set themselves the opposite problem how to collect body heat. They have designed a collection system which uses not only body heat, but the heat given off by such objects as light bulbs and refrigerators as well. The system works so well that

21、 no fuel is needed to make the campuss six buildings comfortable.Some parts of most modern buildings theaters and offices as well as classrooms are more than sufficiently heated by people and lights and sometimes must be air-conditioned even in winter. The technique of saving heat and redistributing

22、 it is called “heat recovery”. A few modern buildings recover heat, but the Universitys system is the first to recover heat from buildings and reuse it in others.Along the way, Pitt has learned a great deal about some of its producers. The harder a student studies, the more heat his body gives off.

23、Male students send out more heat than female students, and the larger a student is, the more heat he produces. It is tempting to conclude that the hottest prospect for the Johnstown campus would be a hard-working overweight male genius. 1. What is characteristic of the buildings on Johnstown campus

24、of the University of Pittsburgh?A. They are more comfortable to live in than other buildings.B. They collect body heat to regulate the temperature inside.C. They use light bulbs to heat the classrooms.D. They consume less fuel to keep the classrooms cool. 2. According to the passage, the technique o

25、f heat recovery is used _.A. to provide a special form of air-conditioningB. to provide heat for the hot water systemC. to find out the source of heatD. to collect heat and reuse it 3. The phrase “the hottest prospect” in this passage refers to _.A. the person who suffers most from heatB. the person

26、 who needs more heat than othersC. the person who gives off most heatD. the person who make better use of body heat 4. Which of the following statements is NOT true according the passage?A. The harder a student works, the more heat he or she produces.B. The bigger a student is, the more heat he or s

27、he sends out.C. A girl student sends out more heat than a boy student.D. A large and hard-working boy student gives off the most heat. 5. Which of the following may be the best title for this passage?A. Recovery of Body HeatC. Modern Buildings Heat SystemB. Body Heat and SexD. Ways of Heating Buildi

28、ngsPassage 5. B D C C A(0.66)The Earth has a force that pulls thing toward itself. We call this force gravity. This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and must overcome if we are to

29、get anywhere in space, or off the ground at all.Take the throwing of a ball as an example. The harder the ball is thrown, the faster and higher it will go. What is the secret? Its speed. If we could throw the ball hard enough it would go up and up forever and never come down. The speed at which it w

30、ould have to be thrown do this is known as escape speed. Of course, we cannot throw a ball hard enough because the speed required to escape completely from the Earths gravity is seven miles per second, or over twenty-five thousand miles per hour.Once escape speed has been reached by a spacecraft, no

31、 further power is needed. A rocket aimed at the Moon, for instance, will coast（滑行）the rest of the way because the Earths gravity cannot then pull it back, and there is no air resistance in space to slow it down. This coasting is known as free fall. That does not mean the rocket is falling down towards the Earth but that it is traveling freely in space without the aid of power, like a bicycle coasting downhill.Free fall is an important feature of space travel: it would be impossible to carry enough fuel to provide powered flight all the time. 1.What is the most important factor for a rocket t