Passage 5

     People are making more and more demands on the world's natural resources. If babies bom in 1991 live for eighty years, the human population of the world may be anything from twice to three times the present total by 2070. In other words, they will have to share what is left of the earth's resources with 15 billion other people. But hopefully there will be an important decrease in the growth of population. What if this does not happen? The answer is that by the time before the babies born in 1991 reach the age of 40 they could be sharing resources with as many as 10 billion other people.

     Limiting the pollution of water and the atmosphere, controlling the output of the chemicals that may be causing the global warming and climate change, and eating less meat may go some to help, but can anyone seriously imagine that these are going to solve the problems of the "baby class" of 1991 ?

     There is no getting away from the fact that people are responsible(对......负责) for the present state of the world, and only people can solve the problems. The decisions have to be taken by people as members of national and local governments;as leaders and decision-makers in industry; as scientists and technologists; as professional engineers and designers; as reli- gious (宗教的) leaders and individual citizens.

1. Which of the following can be the best title of the passage?
   A. Making More Demands on the Natural Resources
   B. Limiting the Pollution of Air and Water
   C. Reducing the World Population
   D. Saving the Babies of 1991
答案: C 指导：本文主要讲述随着人口的增长，出现了一系列的问题，所以C为最佳答案。
2. What does the author mean by "the problems of the baby class of 1991" ?
   A. A large number of babies will be bom after 1991.
   B. Babies bom in 1991 won't live a long life.
   C. The children of 1991 are not given good education.
   D. The problems caused by babies bom in 1991.
答案: D 指导：文章着重以1991年出生的孩子为例说明人口增长将会带来一系列问题，所以D为最佳答案。
3. This short passage is probably taken from _______.
   A. a news report
   B. a guide to the world
   C. an article by a medical worker
   D. a government report
答案: A 指导：据写作方式和最后一段所列举的“人”可知文章是以“呼吁”的语气写的，故A为最佳答案。
4. Which of the following is NOT mentioned in the last paragraph as people responsible for the present state of the world?
   A. Officials.         B. Industrialists.
   C. Businessmen.       D. Scientists.
答案: C 指导：由最后一段最后一句可知。