大学英语教材3——unit 4 课后作业答案.doc

Unit Four HealthEnhance Your Language AwarenessWords in action Working with Words and Expressions (1)1. indifferent 2. prejudice3. appealing 4. rendered 5. threats 6. respect7. isolate 8. sucked 9. infected10. ignorance 11. namely12. probable13. reluctantly14. applause15. wept16. issued 17. shelter 18. contracted 19. cheated 20. tolerated (2)1. guard against 2. concern yourself with 3. make room for 4. bring to an end5. in the hope of 6. on the ground(s) that 7. at risk8. set aside9. As regards 10. cut off 11. Owing to 12. Carry onIncreasing Your Word Power(1)1)accurateaccuracy 精确，准确（度）2) advocate advocacy 提倡；鼓吹3) consistent consistency一致性；连贯性4) delicate delicacy 细嫩；精美5) efficientefficiency 效能，效率6) intimateintimacy亲密，密切7) presidentpresidency总统等的职位8) privateprivacy隐私；独处9) secret secrecy 保密；保密能力10) self-sufficient self-sufficiency自给自足(2)1. secrecy2. presidency3. consistency4. efficiency 5. privacy6. intimacy 7. accuracy 8. self-sufficiency 9. advocacy 10. delicacy(3)1. justification 2. justice3. justifiable4. justify 5. justified 6. just GRAMMAR REVIEW(1)1. I can discuss the matter with you now if (it is) necessary (to do so).2. When (they are) watching the World Cup, the students often cheer loudly.3. Unless (you are) otherwise instructed, you should leave by the back exit.4. Perhaps I could not write a best-seller and (I) will never be able to (do so).5. In the accident the child was hurt and the mother (was) killed.6. Speaking exercises ones tongue, reading (exercises) ones eyes and writing (exercises) ones mind.(2.1)1. to reach an agreement in such a delicate situation2. the way he keeps changing his mind3. that perhaps he was lying4. to be asked to speak here5. buying so much food when the children are all away(2.2)1. It is disappointing 2. I find it useless / pointless 3. It is not possible / It is impossible 4. They kept it a secret / kept it quiet 5. It is still not clearCLOZE(1) threat(2) at risk(3) infected(4) prejudice(5) isolated(6) contracted(7) shelter(8) grieve(9) along(10) pathway(11) issue(12) bring(13) evil(14) concern ourselves with(15) supportTRANSLATION(1)1) They took their sick father on a long journey to Beijing in the hope of finding a cure for /in the hope of curing his heart disease / problem.2) The campaign of Knowing More About AIDS needs to be carried on, and for / at this stage the emphasis is put on the way (how) the disease is contracted.3) If power is properly applied / used / exercised, the lives of the common people will be rendered happy. If not, their daily life will be placed under threat.4) Could a government justifiably use nuclear weapons to guard against terrorist attacks?5) Owing to ignorance of the disease, many people still believe that HIV victims deserve what they suffer.6) The newly issued report on improving the medical system in rural areas leads us to believe that the era is to be brought to an end when such areas are always short of doctors and medicines(2)Retirement brings peoples career to an end. They find, all of a sudden, that they can no more / longer carry on the job they have done for dozens of years. Some old people cannot adapt themselves to such a change and thus become depressed, believing that they are no longer useful. Indeed, depression has become one of the leading threats to old peoples health. Nonetheless, many old people in China are able to maintain their sense of usefulness by rendering their grown-up children services, such as taking care of their grandchildren and providing allowances to them. The question remains as to whether senior citizens should try other means to fill up their leisure, rendering their later years still more meaningful. I suggest the old concern themselves less with their children and make room for young people to take responsibility for their own lives. After all, the old deserve respect from the young and the young should tolerate their aged parents more, on the grounds that the old have contributed so much for so many years both to their family and to society.THEME-RELATED WRITING1. AIDS Across the EarthAIDS has killed and is threatening to kill millions all across the earth. Several million infections are reported by WHO each year. The virus does not care whether you are black or white, male or female, young or old. It will attack you as long as you are a human. Today, AIDS has become the leading killer of young adults and is turning the children whose parents suffer the disease into orphans. It is no exaggeration to say that we live under the shadow of AIDS.There are several possible causes for such a situation: unsafe sexual intercourse; sharing or reusing contaminated needles; transfusion of contaminated blood or blood products; an infected persons pregnancy, giving birth and breastfeeding, etc. Unfortunately, our ignorance, prejudice and silence have carried the situation to a desperate extreme. Patients are isolated or treated as outcasts by their families and their communities. AIDS victims feel ashamed to be identified as such and try hard to hide their disease. For this reason, they cannot get immediate medical treatment. Our harmful attitudes towards the disease and its victims have actually placed more people at risk. In our fight against this deadly disease, we should educate people on how to avoid being infected with the disease and how to lead a healthy and secure life and, more importantly, how to treat AIDS patients properly. Only in this way can we really bring AIDS under control.2. Why Do the Young Adults Kill Themselves?Young adults are in the prime of their lives and are supposed to pursue their dreams and enjoy themselves. Yet it was reported in the Guardian that suicide is the main cause of death among young adults in China. Why have so many young people ended their lives? Three factors are thought to account for the high suicide rate: increasing stress, loneliness and a lack of medical support for depression. The most pressing one, I think, is stress. Take my college life for example. From the first da