关于我国民族的说法,正确的是( ) A、我国人口最多的民族主要分布在内蒙古自治区 B、我国的少数民族主要分布在东南、西南、西北等地区 C、我国各民族分布具有“大散居、小聚居、交错杂居”的特点 D、我国少数民族分布最多的省级行政区是新疆维吾尔自治区 答案:C
In the United States, 30%of the grown-up
population has a “weight problem”. To many people, the cause is clear: we eat
too much. But scientific experiments do 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, besides, have shown
that fatter people do not eat more on average than thinner people. In fact,
some research work, such as the 1979 study of 3,545 London office workers,
reports that fat people eat less than thinner people on average. Studies show
that thin people are more active than fat people. A study by the research group
at Standford University School of Medicine found the following fact: the more
the man ran, the greater body fat he lost. The more he ran, the greater was his
need for food. 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
grown-up 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 on the information given this
article, suppose there are 500 grown-up Americans, about how many of them have
a weight problem?
A. 30 B.
50 C.
100 D. 150
3. Are there scientific facts to support
that eating too much is the cause of the “weight problem”?
A. Yes, there are plenty of them.
B. Of course, there are facts to show this
is true.
C. There are hardly any scientific facts to
support this.
D. We don’t know because the information is
not given.
4. Compared with the grown-up Americans
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
activities
D. had more weight problems