Around the world more and more people are taking part in dangerous sports and activities. Of course, there have always been people who have looked for adventure-those who have climbed the highest mountains, explored unknown parts of the world or sailed in small boats across the greatest oceans. Now, however, there are people who seek an immediate excitement from a risky activity which may only last a few minutes or even seconds.
I would consider bungee jumping to be a good example of such an activity. You jump from a high place (perhaps a bridge or a hot-air balloon) 200 meters above the ground with an elastic rope tied to your ankles. You fall at up to 150 kilometers an hour until the rope stops you from hitting the ground. It is estimated that two million people around the world have now tried bungee jumping. Other activities which most people would say are as risky as bungee jumping involve jumping from tall buildings and diving into the sea from the top of high cliffs.
Why do people take part in such activities as these? Some psychologists suggest that it is because life in modern societies has become safe and boring. Not very long ago, people's lives were constantly under threat. They had to go out and hunt for food, diseases could not easily be cured, and life was a continuous battle for survival.
Nowadays, according to many people, life offers little excitement. They live and work in comparatively safe environment; they buy food in shops; and there are doctors and hospitals to look after them if they become ill. The answer for some of these people is to seek danger in activities such as bungee jumping.
1. A suitable title for the passage is .
A. Dangerous Sports: What and Why? B. The Boredom of Modern Life C. Bungee Jumping: Is It Really Dangerous? D. The Need for Excitement
2. More and more people today .
A. are trying activities such as bungee jumping B. are climbing the highest mountains C. are close to death in sports D. are looking for adventures such as exploring unknown places
3. People probably take part in dangerous sports nowadays because .
A. they have a lot of free time B. they can go to hospital if they are injured C. their lives lack excitement D. hey no longer need to hunt for food
4. The writer of the passage has a(n) attitude towards dangerous sports.
A. positive B. negative C. objective D. subjective
参考答案：A A C C
In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Endangered Species Act in 1973. The act, designed to protect species' living areas, and policies that preserve land and forests compete with economic interests. In the 1990's, for example, the woodcutters in the Western United States were challenged legally in their attempt to cut trees for timber in the Cascade Mountains. The challenge was mounted to protect the endangered spotted owl (猫头鹰) , whose remaining population occupies these forests and requires the intact, ancient forest for survival. The problematic situation set the interests of environmentalists against those of corporations and of individuals who stood to lose jobs. After months of debate and legal battles, the fate of the woodcutters—and the owls—was still undecided in mid-1992.
Similar tensions exist between the developed and the developing nations. Many people in industrialized nations, for example, believe that developing nations in tropical regions should do more to protect their rain forests and other natural areas. But the developing countries may be impoverished ( 使穷困 ), with populations growing so rapidly that using the land is a means to temporarily avoid worsening poverty and starvation.
Many of the changes to Earth that concern scientists have the potential to rob the planet of its biological richness. The destruction of Earth's ozone layer( 臭氧层), for example, could contribute to the general process of impoverishment by allowing ultra-violet rays to harm plants and animals. And global warming could wipe out species unable to quickly adapt to changing climates. Clearly, protecting will come only through coordinated international efforts to control human population, stabilize the composition of the atmosphere, and preserve intact Earth's complex web of life.
1. Why does the author say that the protection of endangered species is a highly controversial issue?
A. Because people can't agree as to what species to protect.
B. Because it is difficult to find an effective way to protect such species.
C. Because it affects the interests of certain groups of people.
D. Because it is a major problem involving a series of legal procedures.
2. According to the passage, the preservation of rain forests _____.
A. may hamper developing country in its fight against poverty
B. benefits developed countries rather than developing countries
C. should take priority over the control of human population
D. will help improve the living conditions in developing countries
3. According to the passage, cutting trees to grow more food _____.
A. will widen the gap between the developed and the developing countries
B. is but a short-term relief to the food problem
C. can hardly alleviate the shortage of food
D. proves to be an effective way out for impoverished nations
4. Among "humanity's current problems" (Line6, Para. 3 ), the chief concern of the scientists is _____.
A. the impoverishment of developing countries
B. the explosion of the human population
C. the reduction of biological diversity
D. the effect of global wamfing
5. The author's purpose in writing this passage is _____.
A. to describe the difficulties in solving humanity's current problems
B. to present the different views on humanity's current problems
C. to analyse the contradiction between countries in dealing with humanity's current problems
D. to point out that humanity's current problems can only be solved through the cooperation of nations
参考答案：C A B C D