试题题干
Short Answer Questions
The following 2 questions are based on the following passage. Read the passage carefully again and answer the questions briefly.
Evidence that pesticides have long-term deadly effects on human beings has started to accumulate, and recently Robert Finch, Secretary of the U.S. Department of Health, Education and Welfare, expressed his extreme worries about the pesticide situation. Simultaneously the petrochemical industry continues its unconscious poison-selling. For instance, Shell Chemical has been carrying on a high-pressure campaign to sell the insecticide Azodrin to farmers as a killer of cotton pests. They continue their programme even though they know that Azodrin is not only ineffective, but often increases the pest density. They’ve covered themselves nicely in an advertisement which states “Even if an overpowering migration develops, the flexibility of Azodrin lets you regain control fast. Just increase the dosage according to label recommendations.” It’s a great game-get people to apply the poison and kill the natural enemies of the insects. Then blame the increased insects on “migration” and sell even more pesticide!
Right now fisheries are being wiped out by over-exploitation, made easy by modern electronic equipment. The companies producing the equipment know this. They even boast in advertising that only their equipment will keep fishermen in business until the final kill. Profits must obviously be maximized in the short run. Indeed, Western society is in the process of completing the destruction of the planet for economic gain: And, sadly, most of the rest of the world is eager for the opportunity to imitate our behavior. But the underdeveloped peoples will be denied that opportunity一the days of robbing the planet of its resources are drawing surely to a close.
Most of the people who are going to die in the greatest disaster in the history of man have already been born. Both worldwide disaster and thermonuclear war are made more probable as population growth continues. These, along with famine, make up the trio of potential “death rate solutions” the population problem—solutions in which the birth rate-death rate imbalance is redressed by a rise in the death rate rather than by a lowering of the birth rate. Make no mistake about it, the imbalance will be set right. The shape of the population—growth curve is one familiar to the biologist. It is the outbreak part of an outbreak—crash sequence. A population grows rapidly in the presence of abundant resources, finally runs out of food or some other necessity, and crashes to alarm level or dies out. Man is not only running out of food, he is also destroying the life support systems of the spaceship Earth.