[单项选择]

Passage 1
In the United States, 30 percent of the adult population has a "weight problem." To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television.
Several modern studies, moreover, have shown that fatter people do not eat more on average than thinner people. In fact, some investigations, such as the 1979 study of 3 545 London office workers, report that, on balance, fat people eat less than slimmer people.
Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts:
The more the men ran, the more body fat they lost.
The more they ran, the g
A. 30
B. 50
C. 100
D. 150

[单项选择]

Passage 1
In the United States, 30 percent of the adult population has a "weight problem." To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television.
Several modern studies, moreover, have shown that fatter people do not eat more on average than thinner people. In fact, some investigations, such as the 1979 study of 3 545 London office workers, report that, on balance, fat people eat less than slimmer people.
Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts:
The more the men ran, the more body fat they lost.
The more they ran, the g
A. they are too slim
B. they work too hard
C. they are too fat
D. they lose too much body fat

[单项选择]

Many United States companies have, unfortunately, made the search for legal protection from import competition into a major line of work. Since 1980 the United States international Trade Commission (ITC) has received about 280 complaints alleging damage from imports that benefit from subsidies by foreign governments. Another 340 charge that foreign companies "dumped" their products in the United States at "less than fair value. " Even when no unfair practices are alleged, the simple claim that an industry has been injured by imports is sufficient grounds to seek relief.
Contrary to the general impression, this quest for import relief has hurt more companies than it has helped. As corporations begin to function globally, they develop an intricate web of marketing, production, and research relationships. The complexity of these relationships makes it unlikely that a system of import relief
A. arguing against the increased internationalization of United States corporations
B. warning that the application of laws affecting trade frequently has unintended consequences
C. demonstrating that foreign-based firms receive more subsidies from their governments than United States firms receive from the United States government
D. advocating the use of trade restrictions for "dumped" products but not for other imports

[填空题]Passage Six
The United States is full of (1) . There are still many families without cars, but some families have two or even more. However, cars are used for more than pleasure. They are (2) part of life.
Cars are used for (3) . They are driven to offices and factories by workers who have no other way to get to their jobs. When salesmen are sent to different parts of the city, they have to drive in order to carry their (4) . Farmers have to drive into the city in order to get supplies.
Sometimes small children must be driven to school. In some cities school (5) are used only when children live more than a mile from the school. When the children are too young to walk that (6) , their mothers (7) turns driving them to school. One mother drives on Mondays, taking her own children and neighbors’ children as well. Another drives on Tuesdays, another on Wednesdays, and so on. Thi