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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 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 (人类学家) 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
