题目内容
Most people think of zoos as safe heavens for animals, where problems such as difficulty finding food and avoiding predators (食肉动物) don’t exist. Therefore, animals in zoos should live to a ripe old age.
But that may not be true for the largest land animals on earth. Scientists have known that elephants in zoos often suffer from poor health. They develop diseases and they are even unable to have babies.
To learn more about how captivity (圈养) affects elephants, a team of international scientists compared the lifespans (寿命) of the zoo-born elephants with the lifespans of thousands of wild elephants. They also compared some Asian elephants living in zoos with some Asian elephants which work in logging camp (伐木场), over almost the same time period.
The team found that elephants born in zoos lived an average of 16.9 years, but elephants that died of natural causes lived an average of 56 years. Asian elephants followed a similar pattern. In zoos, they lived 18.9 years, while those in the logging camp lived 41.7 years.
Scientists don’t yet know why wild elephants seem to live so much better than their zoo-raised counterparts (同类). Georgia Mason, a biologist at the University of Guelph in Canada, who led the study, thinks stress and obesity (肥胖) may be to blame. Zoo elephants don’t get the same kind of exercise they would in the wild. Elephants’ social lives are also much different in zoos than in the wild, where they live in large family groups.
Most people believe that________.
A. animals in zoos should live a longer life
B. zoos are not good for animals to live in
C. zoos are not suitable for large animals
D. captivity can affect animals in many ways
The purpose of the international scientists is_________.
A. to compare the lifespans of different animals
B. to find out how captivity affects elephants
C. to learn the lifespans of male and female elephants
D. to compare the lifespans of elephants in different places
Which elephants live the longest according to the study?
A. Elephants born in zoos.
B. Elephants that live in the wild.
C. Elephants that work in logging camps.
D. Female Asian elephants in logging camps.
We can infer from the passage that_________.
A. elephants in zoos suffer less stress than those in the wild
B. elephants in zoos live an easy life
C. social lives are not important to elephants
D. zoo life can be stressful to elephants
What are the advantages to elephants in the wild according to the passage?
A. They face fewer problems. B. They can find food more easily.
C. They live in large social groups. D. They are freer to move.
【小题1】A
【小题2】B
【小题3】B
【小题4】D
【小题5】C
解析:
【小题1】细节再现题。从文中第一段的最后一句可以找到答案。
【小题2】细节再现题。从文中第三段的第1句中可以找到答案。
【小题3】推理判断题。从文中第三段和第四段的信息可知，野外生长的大象寿命最长。
【小题4】推理判断题。从文中最后一段可知压力和肥胖是造成大象寿命短的主要原因。
【小题5】细节再现题。从文中第五段的最后一句可以找到答案。
it but later found it made you feel very uncomfortable over time? When you select your career, there’s whole lot more to it than assessing your skills and matching them with a particular position. If you ignore your personality, it will hurt you long-term regardless of your skills or the job's pay. There are several areas of your personality that you need to consider to help you find a good job. Here are a few of those main areas: 
right hand, and in many countries and regions in Europe some people still follow this tradition．
．You can have an inscription put on the inside the band．Farming was once the chief way of life in nearly every country. People cannot live without food, and nearly all their food comes from crops and animals raised on farms. Not many people farm for a living any more, but farming remains the most important work in the world.
Before the nineteenth century, the typical American family lived on a small farm. They raised pigs, cattle, sheep, chickens, and planted corn, frui
ts, garden vegetables, and wheat. Everyone worked long and hard, but the results were often poor. Families barely harvested enough food for themselves. This situation began to change during the last half of the 1800's and it changed remarkably(明显地) in the next century.
Scientific methods and labor-saving machinery have made farming increasingly productive. The development of improved plant varieties and fertilizers has helped double and even triple the production of some major crops. More scientific animal care and animal raising have helped increase the amount of meat and products that animals produce. At the same time, the use of tractors and other modern farm equipment has sharply reduced the need for farm labor.
As farming has become less important as a way of life in the United States, it has become more important as a source which offers materials to industry. Today's successful farmers are experts not just in agriculture but also in accounting, marketing, and finance. Farms that are
not run in a similar way have great difficulty surviving.
【小题1】 We are told in the first paragraph about ____.
| A．the history of farming | B．the importance of farming |
| C．the development of farming | D．the changes of farming |
| A．Farmers didn’t work hard on their farms. |
| B．Farmers used tractors to help them. |
| C．Farming was the main way of living for most people. |
| D．Farmers could supply materials to industry. |
| A．scientific methods | B．labor- saving machinery |
| C．farmers’ hard work | D．chemical fertilizers |
| A．the advantages of American farming | B．the changes in American farming |
| C．the situation of American farms | D．how rapidly farming has developed |