Question

    In the United States, 30 percent of the people have a “weight problem”. To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to 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 don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.

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

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

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

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

1.Nowadays many Americans have the problem that ______.

A.they are too slim B.they work too hard

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

2.According to the passage, how many people in 900 Americans have a “weight problem”?

A.150. B.300. C.600. D.270.

3.The Americans in 1910 ________.

A.ate more food and had more physical activities B.ate less food but had more physical activities

C.ate less food and had less physical activities D.had more problems

Answer

1.C

2.D

3.A

【解析】

这是一篇说明文。文章主要说明了如今美国30%的成年人都有肥胖问题。此外，一些现代研究表明，肥胖的人并不比瘦的人吃得更多，苗条的人比肥胖的人更活跃。同时列举了斯坦福大学的一个研究小组发现的一些事实。

1.

细节理解题。根据第一段第一句In the United States, 30 percent of the people have a “weight problem”.可知在美国，30%的人有“体重问题”。由此可知，美国30%的成年人都有肥胖问题，故选C。

2.

细节理解题。根据第一段第一句In the United States, 30 percent of the people have a “weight problem”.可知在美国，30%的人有“体重问题”。由此可知，900个美国人中有900×30%＝270人有体重问题。故选D。

3.

细节理解题。根据第一段中Going back to 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.可知回到1910年的美国，我们发现人们比今天更瘦，但他们吃更多的食物。在那些日子里，人们工作更努力，步行更多，使用机器更少，也不看电视。由此可知，1910年的美国人吃得更多，进行更多的体育活动。故选A。