【B4】A．fewB．muchC．littleD．enough

A、Wait for other guests to put it on their laps first.

B、Wait for female guests to put it on their laps first.

C、Wait for male guests to put it on their laps first.

D、Wait for the hostess to put it on her lap first

A．such

B．much

C．this

D．itself

Earth's climate has been changing constantly over its 5-billion-year history.

Sometimes, the climate has warmed so that the oceans have risen and covered much of the Earth. Each of the changes may seem extreme, but they usually occurred slowly over many thousands of years.

Ancient Climate History

The first people arrived in America between 15,000 and 30,000 years ago. During that time, much of North America was covered by great ice sheets. Some 14,000 years ago, the last ice sheet began to melt very quickly. By 7,000 years ago, the ice was gone. This end to the ice ages caused big changes on the Earth. The changes caused many kinds of plants and animals to die. For example, mastodons—elephant-like animals—and other large mammals that preferred cold climates may not have been able to live in the warmer, drier conditions.

The Little Ice Age

Starting in the 14th century, Europeans lived through what is known as the "Little Ice Age." The Little Ice Age lasted for several hundred years. During the Little Ice Age, the advance of glaciers along with hard winters and famines caused some people to starve and others to leave their homes.

Recent Climate History

The Earth has warmed about 1°F in the last 100 years. And the four warmest years of the 20th century all happened in the 1990s. Periods of increased heat from the sun may have helped make the Earth warmer. But many of the world's leading climatologists think that the greenhouse gases people produce are making the Earth warmer, too.

Scientists think the sea has risen partly because of melting glaciers and sea ice. When some glaciers melt, they release water into the sea and make it higher than it was before. Scientists also think that warmer temperatures in the sea make it rise even more. Heat makes water expand. When the ocean expands, it takes up more space.

What Might Happen？

Scientists are not fortune-tellers. They don't know exactly what will happen in the future. But they can use special computer programs to find out how the climate may change in the years ahead. And the computer programs tell us that the Earth may continue to get warmer.

Together, the melting glaciers, rising seas, and computer models provide some good clues. They tell us that the Earth's temperature will probably continue to rise as long as we continue increasing the amount of greenhouse gases in the atmosphere.

Scientists have to think like detectives. They look for clues to help them understand how the world works. Then they investigate the clues to find evidence—real facts that can give them a better idea of what is going on. Here are some of the ways that scientists gather evidence about climate, both past and present:

Weather Stations

Weather stations help us find out the temperature on the surface of the Earth. Weather stations use special thermometers that tell us the temperature. They can be set up almost anywhere on land. Weather stations also can tell us how fast the wind is moving and how much rain falls on the ground during a storm.

Weather Balloons

Almost everyone likes balloons—including scientists! Weather balloons are released to float high up into the atmosphere. They carry special instruments that send all kinds of information about the weather back to people on the ground.

Ocean Buoys

A buoy is an object that floats on water, and is often used to warn boats away from dangerous places in the ocean or on a river. But some buoys have special instruments on them. These buoys can tell us the temperature and other things about the conditions of the atmosphere.

Weather Satellites

Humans send satellites into space to travel around the Earth. The satellites send back

A．Y

B．N

C．NG

M: I certainly have. I joined the fitness club on Monday and I met another squash player there. We're going for a game this evening.

W: I signed up for the aerobics class, but I haven't checked out their other facilities yet.

M: Go to their fruit juice bar. They do snacks too. The staff there are really friendly and you can meet other people who go to the sports centre.

W: Which snacks do you recommend？ I suppose they must be really healthy—not the kind of food I usually see you eating!

M: That's true. I like the carrot cake best. By the way, they offer tennis classes at the centre. Didn't you say you were interested in learning？

W: Yes, I did. Are they expensive？

M: They're cheaper than I've seen anywhere else, mainly because they teach you in small groups, not individually. You can get individual coaching if you prefer.

W: I'm happy with a small group. I mean, I want to learn just to play for fun, not in any competitions or anything.

M: Why don't we go there together now, unless you've got something else on？ We can have a little look around and you can buy me a nice healthy snack.

W: Well, I am free as it happens, but why should I buy you a nice healthy snack？

M: You did say last week that you thought I should try to eat a little more healthily.

(20)

A．Because she wants to keep fit.

B．Because the sports centre only offers aerobics classes for women.

C．Because that was the only class she knew about.

D．We are not told.

Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.

听力原文： Written communication has been the center of civilization for centuries. Most of our important records are on paper. Although writing has been around for a long time, paper hasn't.

In fact, putting thoughts down in written form. wasn't always easy or practical. Early people discovered that they could make simple drawings on the walls of caves, which was a great place for recording thoughts, but wasn't portable.

Imagine spending hours scratching a message into a heavy clay tablet and then having to transport it. That's exactly what the Sumerians did around 4000 B.C. Although this form. of written communication was now portable, it still wasn't practical because of its weight.

For centuries, people tried to discover better surfaces on which to record their thoughts. Almost everything imaginable was tried. Wood, stone, ceramics, cloth, bark, metal, silk, bamboo, and tree leaves were all used as a writing surface at one time or another.

The word "paper" is derived from the word "papyrus", which was a plant found in Egypt along the lower Nile River. About 5,000 years ago, Egyptians created "sheets" of papyrus by harvesting, peeling and slicing the plant into strips. The strips were then layered, pounded together and smoothed to make a flat, uniform. sheet.

(27)

A．It cost too much time.

B．The walls were too hard to engrave.

C．The drawings were too simple to recognize.

D．It wasn't portable.

B．Trout.

C．Cod.

D．Salmon.

A．people buy products that are advertised well

B．commercials are effective

C．children pay more attention to advertising than to regular programming

D．children are defenseless against advertising

A．Therefore

B．Moreover

C．Then

D．However

A．much

B．more

C．few

D．little

A sample investigation made by people including Qian Mingyi, psychology professor and director of doctoral candidates on the advertisements for partners in the magazine Women of China from 1985 to 2000 shows that in terms of physiological conditions, age, which was number 1 in 1985 and 1995, is an important criterion for women in choosing their partners. However, women have been less strict about men's height year by year and their requirements on their appearance to the 10th place. Women now care more about the personal, social and economic conditions of men. However, women have always valued the health of their partners and this has not changed much during the 15 years.

In terms of social and economic conditions, during the 15 years, the rate of mention women's requirements on the job and educational experience of their partners has been falling, but the requirement on career rose from the 9th place in 1985 to second place by the end of 1990s. The changes of criteria on partners are a reflection of the political, economic and cultural changes in society. According to experts' analyses, in early 1980s, educational experience and job represented the income level of an individual, while in late 1990s, with diversified channels of income and increasingly frequent occupational differentiation, educational experience and job could not directly indicate one's income. Comparatively, the elements of career, social and economic status are more relevant. Men with high achievement in terms of career are more attractive to women and quality of life after marriage can be better ensured.

(33)

A．Vertically handicapped.

B．Short.

C．Secondary handicapped.

D．Height challenged.