听力原文： Many of us believe that a person's mind becomes less active as he grows older. But this is not true, according to Dr.Jarvik, professor of psychiatry at the University of California. She has studied the mental functioning of aging persons for several years. For example, one of her studies concerns 136 pairs of identical twins, who were first examined when they were already 60 years old. As Dr. Jarvik continued the study of the twins into their 70's and 80's, their minds did not generally decline as was expected.

However, there was some decline in their psychomotor speed. This means that it took them longer to accomplish mental tasks than it used to. But when speed was not a factor, they lost very little intellectual ability over the years. In general Dr. Jarvik's studies have shown that there is no decline in knowledge or reasoning ability. This is true not only with those in their 30's and 40's, but with those in their 60's and 70's as well. In the cases where the older person's mind really seems to decay, it is not necessarily a sign of decay due to old age. Often it is simply a sign of a depressed emotional state.

According to Dr. Jarvik's studies, middle-aged and older persons would expect to ______.

A．remember less

B．reason better

C．learn fewer things

D．lose no intellectual ability

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听力原文： Yuppies are young people who earn a lot of money and live in a style. that is too expensive for most people. If you are invited to a yuppie dinner party, don't be surprised if you are offered freshly -cooked insects as a first course. While the idea of eating fried insects fills most of us with horror, insect eating is becoming highly fashionable. For example, in the media industry, successful executives are often seen to eat fried or boiled insets from time to time while working at their desks. These safe -to-eat insects can be found and ordered on the Internet. And young people are logging on to exotic food websites and ordering samples of prepared insects to serve at their dinner parties. Al- though the idea of eating insects is probably disgusting to most of us, few people would claim that pigs, chickens, and some kinds of seafood we often eat are examples of great duty. One day, insects could be marketed and sold as the food item in supermarkets. According to their fans, they are not only high in protein and low in fat, but also very tasty. But until our attitudes to food change fundamentally, it seems that insect-eaters will remain a selected few.
Why did the speaker say we might be surprised at a yuppie dinner party？
A．Because we might be offered a dish of insects.
B．Because nothing but freshly cooked insects are served
C．Because some yuppies like to horrify guests with insects as food.
D．Because we might meet many successful executives in the media industry.

听力原文：W: John, have a look at this note from the landlord？M: What？ It's too much for us
听力原文：W: John, have a look at this note from the landlord？
M: What？ It's too much for us. We can't afford another twenty dollars a month.
What are the speakers talking about？
A．a salary cut.
B．A house.
C．A rent increase.
D．A vacation trip.

请帮忙给出正确答案和分析，谢谢！

听力原文：M: How many science courses did you have in high school？W: I had only one year of
听力原文：M: How many science courses did you have in high school？
W: I had only one year of biology and chemistry. I wish I'd had more. I'm interested in physics, to be frank.
Q: How many science courses did the woman take in high school？
(17)
A．One course.
B．Two courses.
C．Three courses.
D．More than three courses.

听力原文：F: I think the story is interesting, but Mary thinks it dull. Can you tell us how you like it？
M: I'm sorry I know nothing about your story.
what does the man mean？
A．He thinks it interesting.
B．He thinks it dull.
C．He hasn't seen it.

请帮忙给出正确答案和分析，谢谢！

听力原文：W: Well, tonight we have Andrew Green in our studio to talk about music. Andrew is a great guitarist and has his own band. So, Andrew, welcome.
M: Thanks a lot. My pleasure to be here tonight.
W: Now, Andrew, perhaps you could tell us something about the future trends for the global music industry？
M: Sure. Well, from my perspective as a musician, [19] I can see a dramatic increase in the popularity of Latin music, even now. If this trend continues, I imagine the popularity of Salsa dancing will also rise dramatically. This may result in a slight decrease in the popularity of other types of music.
W: What do you think of the sudden drop in interest in classical music？
M: I think this trend has been in the works for quite some time. As more and more varieties of music become available to consumers, the classic standards may suffer in the popularity contest. [20] I think the drop in interest of classical music hasn't been sudden at all, it's been slow and steady for many years now.
W: Is there any type of music that is consistently popular with most people？
M: If you look at the numbers, rock and roll music has remained a steady constant through the years. I expect the popularity of rock and roll will stay the same in the coming years.
W: It's said that [21] rock music might make one livelier and happier. What do you think of it？
M: That's tree. Research suggests that music can influence a person's feelings and character. [21] There's clear evidence that people who listen lively music are lively people.
(20)
A．Salsa dancing.
B．Classical music.
C．Rock and roll.
D．Latin music.

听力原文：Most of us have an image of such a normal or standard English in pronunciation, a
听力原文： Most of us have an image of such a normal or standard English in pronunciation, and very commonly in Great Britain this is "Received Pronunciation", which is often associated with the public schools, Oxford, and the BBD. At the same time, it must be remembered that so far as the English-speaking countries are concerned, this "Received Pronunciation" approached the status of a "standard" almost only in England. Educated Scots, Irishmen, Americans, Australians, and others have their own different images of a standard form. of English.
Even in England it is difficult to speak of a standard in pronunciation. Pronunciation is infinitely variable, so that even given the will to adopt a single pronunciation, it would be difficult to achieve. There is no sure way of any two people saying the same word with precisely the same sound. In this respect pronunciation much more closely resembles handwriting than spelling. In spelling, there are absolute distinctions which can be learnt and imitated with complete precision: One can know at once whether a wont is spelt in a standard way or not. But two person' s handwritings and ciations may both be perfectly intelligible，yet have obvious differences without out being able to say which is“better”or more“standard”．
(33)
A．English pronunciation, spelling and handwriting.
B．The status of Received Pronunciation in the English-speaking countries.
C．The difficulty of achieving a standard in English pronunciation.
D．The importance of achieving a standard in English pronunciation.

听力原文：There are two primary ways that genes can be used to treat disease. The first is gene therapy, in which one or more genes are injected into the patient to replace those that are absent or not working properly. This approach has been used to treat heart disease and many forms of cancer. The second way to exploit genes to treat disease is known as small-molecule therapy. In this approach, a small-molecule (that is a drug) is given to the patient to modify the function of one or more genes in the body.
According to the speaker, small-molecule therapy can be used to ______.
A．replace genes not functioning properly in the body
B．increase the number of genes working properly in the body
C．modify the function of some genes in the body
D．replace genes absent in the body

听力原文： People in the U.S., when they attain legal marriage age and meet certain medical requirements, are free to choose their own mates. Once a couple has decided to get married, the man customarily gives the girl a diamond ring. The use of a ring comes from the ancient custom of using a ring to settle an important agreement. When the wedding day is decided upon, the girl sends out wedding announcements or invitations to friends and relatives. They then send wedding gifts to the girl's home.
On the wedding day it is supposed to be bad luck for the bride and groom to see each other before the wedding. Another old custom that many people believe will bring good luck to the marriage is for the bride to wear 'something old, something new, something borrowed and something blue'.
Before the wedding day the groom always chooses a "best man", a good friend to help him and stand beside him during the wedding ceremony. The custom of having a "best man" is thought to have come from ancient times when a strong friend helped the groom and bride escape from the bride's father.
When a couple marries, the groom gives his bride a wedding ring. Many marriages are double-ring ceremonies—that is, the bride and the groom exchange rings. The wedding ring is customarily a simple plain gold band. The roundness of the ring symbolizes eternity and announces that the couple is united for life. The wedding ring is worn on the third finger of the left hand. People believe that a vein from the third finger runs directly to the heart.
Near the end of the reception, which is offered by the bride's parents, the bride throws her bouquet of flowers to the unwed bridesmaids. The lucky girl who catches it is supposed to be the next in the group to be married. As the bride and groom leave for their honeymoon, the guests all throw confetti on them. This is a symbol of joy and happiness.
Questions:
15.Which of the following requirements is essential if a young couple wants to get married？
16.Why shouldn't the bride and groom see each other before the wedding on the wedding day according to the passage？
17.What does the custom of having a 'best man' for the groom tell us about an cient times？
18.Why is the wedding ring worn on the third finger of the left hand？
(35)
A．To get consent from their parents.
B．To prepare rings for exchange.
C．To be of legal age and to meet certain medical requirements.
D．To send out announcements and invitations.

请帮忙给出正确答案和分析，谢谢！

听力原文： The heaviest snowfall in South Africa in more than 30 years is reported to have caused the deaths of at least 17 people. Almost 50 others an missing in the Drakensbergh mountains and are believed to be taking shelter in huts or caves. Airforce helicopters have rescued about 50 people from the mountains but thousands are still stranded. Thick snow has also blocked the mountain passes in the kingdom of Lesotho, cutting off many villages.
What is reported to have caused the death of at least 17 people？
A．The heaviest wind storm.
B．The' heaviest snowfall.
C．The most severe tornado.
D．The most serious air crash.

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听力原文：You might think the largest library in the world would be in Europe. But it isn't
听力原文： You might think the largest library in the world would be in Europe. But it isn't. It's in Washington. D.C. It's called the Library of Congress.
President John Adams started the library in 1800 for members of Congress. He wanted them to be able to read books about law. The first 740 books were bought in England. They were simply set up in the room where Congress met. Then Thomas Jefferson sold Congress many of his own books. He felt Congress should have books on all subjects, not just on law. This idea changed the library for good.
The library grew and grew. Now it covers acres of land. It contains 20 million books as well as scores of pictures, movies, globes and machines. Experts in every field work here. Hundreds of people call every day with all kinds of questions. Many of them get answers right over the phone.
The library is a large storehouse. Thomas Edison's first movie and Houdini's magic books reside there. And it is the proud owner of the world's best collection of comic books.
(33)
A．Experts in every field.
B．American president.
C．European countries.
D．Members of Congress.

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听力原文："Where is the university？ is question many visitors to Cambridge ask, but no one
听力原文： "Where is the university？ is question many visitors to Cambridge ask, but no one could point them in any one direction because there is no campus. The university consists of thirty-one self-governing colleges. It has lecture halls, libraries, laboratories, museums and offices throughout the city(32).
Individual colleges choose their own students (33), who have to meet the minimum entrance requirements set by the university. Undergraduates usually live and study in their colleges, where they are taught in very small groups. Lectures, and laboratory and practical work are organized by the university and held in university buildings.
There are over ten thousand undergraduates and three thousand five hundred postgraduates. About 40% of them are women and some 8% from overseas. As well as teaching, research is of major importance. Since the beginning of the twentieth century, more than sixty university members have won Nobel prizes.
The university has a huge number of buildings for teaching and research. It has more than sixty specialist subject libraries, as well as the University Library, which, as a copyright library, is entitled to a copy of every book published in Britain(34).
Examinations are set and degrees are awarded by the university. It allowed women to take the university exams in 1881, but it was not until 1948 that they were awarded degrees(35).
(33)
A．Because there are no signs to direct them.
B．Because no tour guides are available.
C．Because all the buildings in the city look alike.
D．Because the university is everywhere in the city.