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大学英语四级考试预测试卷 3

Part I Writing (30 minutes)

Directions For this part, you are allowed 30 minutes to write a composition on the topic Health and Sports. You should write at least 120 words and you should base your composition on the outline (given in Chinese) below.

Income Gap

1.有些人认为收入差距的存在是合理的

2.有些人认为收入差距的存在是不合理的

3.收入差距对社会的影响

Part II Reading 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, mark

Y (for YES) if the statement agrees with the information given in the passage;

N (for NO) if the 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.

How to survive a devastating earthquake

What exactly is an earthquake

Earthquakes, originating miles underground, are a part of global tectonics (筑造学), a process that often changes the elevation of the land and its morphology (形态学); the result of volcanic activity, such as the quakes that shook Washington state weeks before Mount Saint Helens' volcano erupted in 1980; induced by Man.

The earth is not really one solid mass, but is in fact made up of several immense plates that are always pushing against one another. It's a bit like being on a crowded subway; the plates making up the earth are so tightly pushed together that there is always a struggle for room. Eventually, this pressure becomes so great between certain plates that they finally move, violently shifting their position. That is a tectonic earthquake. These constant struggles and shifting of the earth are global tectonics. These are usually the most devastating of all quakes.

Earthquakes may occur in an area before, during, and after a volcanic eruption, and are the result of active forces connected with the eruption, but are not the cause of the volcanic activity itself.

Man-induced earthquakes are often caused by such things as the deep-sea drilling that has occurred in recent years. Such activity deep into the earth can sometimes increase pressure on the plates, making a tense situation much worse.

Can scientists predict earthquakes Can animals predict earthquakes

Scientists have never predicted a major earthquake. They do not know how, and they do not expect to know how any time in the foreseeable future. However, probabilities can be calculated for potential future earthquakes. For example, scientists estimate that over the next 30 years there's a 67% probability of a major earthquake occurring in the San Francisco Bay area. Scientists often focus their efforts on the long-term; lessening of earthquake hazards by helping to improve the safety of structures rather than creating short-term predictions.

Changes in animal behavior before earthquakes have been observed and documented in different parts of the world, most recently in the northern California earthquake of October 17, 1989. It has been recorded that a fish in a high school biology lab in California would flip on its side before some earthquakes. Dogs, cats, snakes, and horses have also been known to behave strangely before earthquakes. But it's possible the change in animal behavior may be caused by other events. Also, the behavior is not consistent; sometimes earthquakes occur with no previous behavioral change.

How to prepare for an earthquake

Perhaps an earthquake's greatest danger lie in the fact that it can occur almost at once. If you live in a location that's prone to earthquakes, preparation before the event is certainly key.

To paraphrase the American Red Cross It's not the shaking that hurts. It's the stuff that falls on your head. Collapsing walls, flying glass and falling objects cause most quake-related injuries and deaths.

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