In the United States, 30 percent of the adult population has a “weight problem.” To many people, the cause is clear: we eat too much. But scientific evidence(证据) does little to support this idea. Going back to the America of 1910, we find that people were thinner than today. Yet they ate more food. In those days, people worked harder physically, walked more, and didn’t watch TV and used machines much less.

   Several modern studies, moreover, have shown that fatter people do not eat more on average than thinner people. In fact, some investigations(调查) such as a 1979 study of 3545 London office workers, reported that 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 of Medicine found the following interesting facts. The more the men ran, the more fat they lost. The more they ran, the more they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.

68. What kind of physical problem do many adult Americans have?

   A. They are too thin        B. They work too hard 

   C. They are too fat         D. They lose too much body fat.

69. Which of the following words can take the place of the word slim in the text?

   A. poor         B. thin         C. rich          D. healthy

70. According to the passage, among 500 American grown-ups, how many have weight problem?

   A. 30           B. 50           C. 100          D. 150

In the United States,30 percent of the adult(成年人) population has a "weight problem". To many people, the cause is clear, we eat too much. But scientific evidence (证据)does little to support this idea. Going back to the America of 1910, 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 TV.

Several modern studies, moreover, have shown that fatter people do not eat more on average(平均地) than thinner people. In fact, some investigations (调查)such as a 1979 study of 3 545 London office workers, reports that 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 fat they lost. The more they ran, the more they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.

56. What kind of physical problem do many adult Americans have?

   A. They are too thin.            B. They work too hard.

   C. They are too fat.             D. They lose too much body fat.

57. According to the information given in the passage, among  500  Americans,  how  many have weight problem?

    A. 30          B. 50       C. 100          D. 150

58 Which of the following words can take the place of the word slim in this passage?

    A. Poor.       B. Thin.       C. Healthy.     D. Rich.

59. Compared with the adult American population today, the Americans of 1910 ____________.

   A. ate more food and had more physical activities

   B. ate less food but had more activities

   C. ate less food and had less physical exercise

   D. had more weight problems

阅读理解

　　In the United States,30 percent of the adult population has a “weight problem”．To many people,the cause is obvious：we eat too much．But scientific evidence(证据) does little to support this idea．Going back to the America of 1910,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(平均) than thinner people．In fact some investigation(调查),such as a 1979 study of 3,545 London office workers,report that,on balance(总的说来),fat people eat less than slimmer people．

　　Studies show that slim people are more active than fat people．A study by a research group of Stanford University school of Medicine found the following interesting facts：

　　The more the men ran,the greater loss of body fat．

　　The more they ran,the greater increase in food intake(摄取)．

　　Thus,those who ran the most ate the most,yet lost the greatest amount of body fat．

1．What kind of physical problem do many adult Americans have?

[    ]

A．They are too thin   B．They work too hard

C．They are too fat    D．They lose too much body fat

2．Based upon the information given in the article,suppose there are 500 adult Americans,about how many of them will have a weight problem?

[    ]

A．30 B．50

C．100 D．150

3．Which of the following words can take the place of the word“slim”in this passage?

[    ]

A．poor　　  B．thin

C．healthy   D．rich

4．Compared with(与…相比)the adult American population to today,the Americans of 1910 ______．

A．ate more food and had more physical activities

B．ate less food but had more activities

C．ate less and had less physical exercises

D．had more weight problem

5．What have modern medical and scientific researches reported to us?

[    ]

A．Fat people eat less food and are less active

B．Fat people eat more food than slim people and are more active

C．Fat people eat more food than slim people but are less active

D．Thin people run less,but have greater increase in food

阅读理解

　　In the United States, 30 percent of the adult(成年人)population has a“weight problem”. To many people, the cause is clear: we eat too much. But scientific evidence(证据)does little to support this idea. Going back to the America of 1910, we find that people were thinner than today. Yet they ate more food. In those days, people worked harder physically, walled more, used machines much less, and didn’t watch TV.

　　Several modern studies, moreover, have shown that fatter people do not eat more on average(平均地) than thinner people. In fact, some investigations(调查), such as a 1979 study of 3545 London office workers, reports that 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 Standford University School of Medicine found the following interesting facts:

　　The more the men ran, the more fat they lost.

　　The more they ran, the more they ate.

　　Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.

1．What kind of physical problem do many adult Americans have? ________.

[　　]

A．They are too thin

B．They work too hard

C．They are too fat

D．They lose too much body fat

2．According to the information given in the passage, among 500 Americans, how many have weight problem?

[　　]

3．Which of the following words can take the place of the word slim in this passage?

[　　]

4．Compared with(与……相比)the adult American population today, the Americans of 1910 ________.

[　　]

A．ate more food and had more physical activities

B．ate less food but had more activities

C．ate less and had less physical exercise

D．had more weight problems

5．What have modern medical and scientific researches reported to us?

[　　]

A．Fat people eat less food and are less active.

B．Fat people eat more food than slim people but are less active.

C．Fat people eat more food than slim people but are more active.

D．Thin people run less, but have greater increase in food intake.