快速導航
學歷類
職業資格
公務員
醫衛類
建筑工程
外語類
外貿類
計算機類
財會類
技能鑒定
Passage 4
Questions 16 to 20 are based on the following passage:
Successful innovations have driven many older technologies to extinction and
have resulted in higher productivity, greater consumption of energy, increased
demand of raw materials, accelerated flow of materials through the economy and
increased quantities of metals and other substances in use each person. The
history of industrial development abounds with examples.
In 1870, horses and mules were the prime source of power on U.S. farms. One
horse or mule was required to support four human beings a ratio that remained
almost constant for many decades. At that time, had a national commission been
asked to forecast the population for 1970, its answer probably would have
depended on whether its consultants were of an economic or technological turn of
mind. Had they been “economists”, they would probably have projected the 1970
horses or mule population to be more than 50 million. Had they been
“technologists”, they would have recognized that the power of steam had already
been harnessed to industry and to learn and ocean transport. They would have
recognized further that it would be the prime source of power on the farm. It
would have been difficult for them to avoid the conclusion that the horse and
mule population would decline rapidly.
16. According to the passage, what supplied most of the power on U.S. farms
in 1870?
A. Animals B. Humans C. Engines D. Water
17. Which of the following is NOT mentioned by the author as a consequence of
new technological developments?
A. Older technologies die away.
B. The quality of life is Improved.
C. Overall productivity increase.
D. More raw materials become necessary.
18. It can be inferred from the passage that by 1870 .
A. technology began to be more economical
B. the steam engine had been invented
C. the U.S. horse population was about 10 million
D. a national commission was about 10 million
19. In the second paragraph, the author suggests that “economists” would
.
A. plan the economy through yearly forecasts
B. fail to consider the influence of technological innovation
C. value the economic contribution of farm animals
D. consult the national commission on the economy
20. What is the author’s attitude toward changes brought on by technological
innovations?
A. He is excited about them.
B. He accept them as natural.
C. He is disturbed by them.
D. He questions their usefulness.
Passage 2
Questions 6 to 10 are based on the following passage:
When aluminum was first produced about a hundred and fifty years ago, it was
so difficult to separate form the ores in which it was found that its price was
higher than that of gold. The price remained high until a new process was
discovered for refining the metal with the aid of electricity approximately
three quarters of a century later. The new method was so much cheaper that
aluminum because practical for many purposes, one of which was making pots and
pans.
Aluminum is lightweight, rustproof and easily shaped into different forms. By
mixing it with other metals, scientists have been able to produce a variety of
alloys, some of which have the strength of steel but weigh only one third as
much.
Today, the uses of aluminum are innumerable. Perhaps its most important use
is in transportation. Aluminum is found in the engine of automobiles, in the
hulls of boats. It is also used in many parts of airplanes. In fact, the huge
“airbus” planes would probably never have been produced if aluminum did not
exist. By making vehicles lighter in weight aluminum has greatly reduced the
amount of fuel needed to move them, Aluminum is also being used extensively in
the building industry in some countries.
Since aluminum is such a versatile (多用的) metal, it is fortunate that bauxite
(鋁土礦), which is one of its chief sources, is also one of the earth’s most
plentiful substances. As the source of aluminum is almost inexhaustible, we can
expect that more and more uses will be found for this versatile metal.
6. The price of aluminum was sharply reduced when people discovered a new
refining process with the aid of .
A. wind B. solar energy C. hydraulic power D. electricity
7. Aluminum is .
A. lightweight, rustproof but not easily shaped into different forms
B. heavyweight, rustproof and easily shaped into different forms
C. lightweight, rustproof and easily shaped into different forms
D. lightweight and easily shaped into different forms but it is easy to
become rusty
8. Which of the following is NOT true?
A. Aluminum is widely used in transportation.
B. Aluminum is also used in many parts of airplanes.
C. Aluminum is being used extensively in the building industry.
D. Aluminum is not used in its pure form.
9. Aluminum is found on earth mostly in the form of .
A. pure metal B. bauxite C. gold D. liquid
10. What is the passage talking about?
A. The features of aluminum and its functions. B. The process of
aluminum.
C. The discovery of aluminum. D. The promising future of aluminum.
Passage 3
Questions 11 to 15 are based on the following passage:
About 70 million Americans are trying to loss weight. That is almost 1 out of
every 3 people in the United States. Some people go on ideas. This means they
eat less certain foods, especially fats and sugars. Other people exercise with
especial equipment, take diet pills, or even have surgery. Losing weight is hard
work, and it can also cost a lot of money. So why do so many people in the
United States want to lose weight?
Many people in the United States worry about not looking young and
attractive. For many people, looking good also means being thin. Other people
worry about their health. Many doctors say being overweight is not healthy. But
are Americans really fat? Almost 30 million Americans weight at least 20 percent
more than their ideal weight. In fact, the United State is the most overweight
country in the wild. “The stored fat of adult Americans weight 2.3 trillion
pounds,” says University of Massachusetts anthropologist (人類學家) George
Armelagos. He says burning off that stored energy would produce enough power for
900,000 cars to go 12,000 miles.
Losing weight is hard work, but most people want to find a fast and easy way
to take off fat. Bookstores sell lots of diet books. These books tell readers
how to lose weight. Each year, dozens of new books like these are written. Each
one boasts to help people to get rid of fat.
11. Which of the following is NOT mentioned as a way of losing weight?
A. To eat less fats and sugars. B. To work hard.
12. Many Americans are trying to lose weight because .
A. they want to look attractive B. they are misled by doctors
C. they want to keep fit D. both A and C
13. The figures given in the second paragraph suggest that .
A. Americans are dependent on cars B. cars consume a lot of money
C. Americans need lose weight D. excess of fat can be a source of energy
14. It can be inferred from the last paragraph that .
A. diet books are not always effective B. diet books are usually helpful
C. there are lots of ways of losing weight D. bookstores are keeping their
promises
15. It can be concluded from the passage that .
A. people think too much of their appearance
B. there is not a sure way of losing weight as yet
C. surgery is the fastest way of losing weight
D. going on diet is a safe way of losing weight
主站蜘蛛池模板:
国自产拍偷拍精品啪啪av|
国产av国片偷人妻麻豆|
亚洲国产精品一区二区制服|
国产精品无码永久免费888|
精品国产自线午夜福利|
人妻少妇精品无码系列|
亚洲色大成网站www国产|
午夜精品一区二区三区在线观看|
人妻夜夜爽天天爽三区|
国产午精品午夜福利757视频播放|
精品噜噜噜噜久久久久久久久|
久久精品国内一区二区三区|
欧美激情黑人极品hd|
国产性色αv视频免费|
国产日韩制服丝袜第一页|
日本黄页网站免费观看|
成人免费看www网址入口|
国产一极内射視颍一|
日日澡夜夜澡人人高潮|
国产乱人偷精品人妻a片|
秋霞无码一区二区|
人妻妺妺窝人体色www聚色窝|
丁香五月亚洲综合深深爱|
激情人妻另类人妻伦|
色欲久久久中文字幕综合网|
国产网红女主播精品视频|
色悠久久久久久久综合网|
中文字幕乱码人妻二区三区|
国产色婷婷亚洲99精品|
精品国产乱码久久久人妻|
97se亚洲国产综合自在线观看|
免费人成激情视频在线观看|
精品国产青草久久久久福利|
曰韩无码av一区二区免费|
边做饭边被躁bd苍井空图片|
国产女主播白浆在线看|
亚洲av无码成h在线观看|
嫩b人妻精品一区二区三区|
久久久av男人的天堂|
亚州中文字幕无码中文字幕|
精品香蕉99久久久久网站|