The amount of stress a person can withstand depends very much on the individual. Some people are not afraid of stress,and such characters are obviously prime material for managerial responsibilities. Others lose heart at the first signs of unusual difficulties. When exposed to stress,in whatever form,we react both chemically and physically. In fact we make choice between "fight" or "flight" and in more primitive days the choice made the difference between life or death. The crises we meet today are unlikely to be so extreme,but however little the stress,it involves the same response. It is when such a reaction lasts long,through continued exposure to stress,that health becomes endangered.Such serious conditions as high blood pressure and heart disease have established links with stress.Since we cannot remove stress from our lives(it would be unwise to do so even if we could),we need to find ways to deal with it.

　　1.People are finding less and less time for relaxing themselves because_____.

　　a.they do not know how to enjoy themselves

　　b.they do not believe that relaxation is important for health

　　c.they are travelling fast all the time

　　d.they are becoming busier with their work

　　2.According to the writer ,the most important character for a good manager is his ________.

　　a.not fearing stress

　　b.knowing the art of relaxation

　　c.high sense of responsibility

　　d.having control over performance

　　3.Which of the follwing statements is ture?

　　a.We can find some ways to avoid stress

　　b.Stress is always harmful to people

　　c.It is easy to change the hagit of keeping oneself busy with work.

　　d.Different people can withstand different amounts of stress

　　4.In Paragraph 3, "such a reaction" refers back to_______.

　　a."making a choice between 'flight' or 'fight'"

　　b."reaction to stress both chemically and physically"

　　c."responding to crises quickly"

　　d."losing heart at the signs difficulties"

　　5.In the last sentence of the passage,"do so " refers to ______.

　　a."expose ourselves to stress"

　　b."find ways to deal with stress"

　　c."remove stress from our lives"

　　d."established links between diseases and stress"

　　答案：dadbc

　　The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additivies,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.

　　1.What is the best possible title of the passage?

　　a.Drug and Food

　　b.Cancer and Health

　　c.Food and Health

　　d.Health and Drug

　　2.Which of the following statements is NOT ture?

　　a.Drugs are always given to animals for medical reasons

　　b.Some of the additives in our food are added to the food itself and some are given to the living animals

　　c.Researchers have known about the potential dangers of food additives for over thirty-five years.

　　d.Food may cause forty percent of cancer in world.

　　3.How has science done something harmful to mankind?

　　a.Because of science , diseases caused by polluted food haven been virtually eliminated.

　　b.It has caused a lack of information concerning the value of food.

　　c.Because of the application of science,some potentially harmful substances have been added to food.

　　d.The scientists have preserved the color of meats,but not of vegetables.

　　4.What are nitrates used for?

　　a.They preserve flavor in packaged foods.

　　b.They preserve the color of meats.

　　c.They are the objects of research.

　　d.They cause the animals to become fatter.

　　5.The word 'carcinogenic' most nearly means '_____'.

　　a.trouble-making

　　b.color-retaining

　　c.money-making

　　d.cancer-causing

　　答案：cacbd