1. Listening Answers to Part 1 1.They are trying to control and prevent diseases. 2. Jane usually asks people if they have a fever, headache or sore throat. She also asks when they got sick. 3. She uses the information she collects to find out what caused the disease. 4. Some detectives work in a laboratory, and others like Jane, travel to areas there a disease has broken out to collect information.

2. Goes out about every 3 months Finds out about new diseases from doctors and hospitals. Some times visits areas Sometimes afraid but always careful You can protect yourselves by washing hands and not going to crowded places; see a doctor if you’re sick

3. Speaking: What’s the most serious social problem today? Sample: I think that AIDS is the most serious problem because millions of people are dying from the disease and there is no cure for it. Another reason is that anyone can get AIDS and we must make sure that everyone knows how to protect themselves. Because so many people are living with AIDS, we must learn to treat them properly and not make their life more difficult. If we were to learn more about AIDS, we could stop the disease and help those who have it.

4. I think that drugs like cocaine are the most serious problem because it kills people and creates other problems, for example crime. This problem is more serious than AIDS. First, It’s easier to protect yourself against AIDS. Second, drugs destroy the lives of more people than just the one who is using the drugs.

5. To decide which problem is the most serious, we must look at all parts of the problem. Alcohol is, in my opinion, the most serious problem. One reason is that so many people drink and that it is often thought to be fun or cool to drink. Young people,especially men, are led to believe that drinking alcohol is normal and safe. Nothing could be farther from the truth. Drinking damages your brain and your body and causes many other problems. When people get drunk, they act

6. irresponsibly and often get violent. Drunken husbands beat up their families; drunken youngsters destroy things and disturb the peace, sometimes even committing crimes. If people were to stop drinking they could enjoy a healthier and safer life.

7. Born Dying The seven deadly diseases 1. Heart disease 心脏病 2. Cancer 癌症 3. Stroke 中风 4. Diabetes 糖尿病 5. osteoporosis. 骨质疏松症 6. Arthritis 关节炎

8. Predict 1. What’s AIDS? What’s HIV? 2. How do people get AIDS? 3.What happens to people who have AIDS? 4.Is the person able to live a normal life?

9. HIV and AIDS HIV= human immunodeficiency virus abbr. 人体免疫缺损病毒，艾滋病病毒 ) AIDS= Acquired Immune Deficiency Syndrome 爱滋病, 获得性免疫功能丧失综合症

10. Born dying Read the text and write down the main idea of each paragraph. Parag 1: 2: 3: 4: 5: 6 & 7: Xiaohua is a person living with AIDS What’s AIDS? How do people get AIDS? Many children become infected with AIDS. Since there is little hope for Xiaohua she decides to use the limited time to do something to help others. Xiaohua helps AID patients and tries to change people’s attitude to them.

11. Post-reading Answers: 3. HIV is the virus that causes AIDS. 4. HIV/AIDS spreads through unprotected s sex, infected blood transfusions and through Birth.

12. listening 2. 1)Acquired means that you get something from someone. In “AIDS”, it means that AIDS is a disease that we get from other people. 2)The immune system protects the body from diseases. 3) AIDS breaks down the immune system. 4)People can become infected with HIV/AIDS through blood transfusions, unprotected sex and childbirth.

13. 5) We should learn more about the disease and avoid unsafe practices. 6) We can ask doctors and nurses to tell us about the disease and we can read about the disease in books and on the Internet.

14. Word study Page52-1 1 infected with 2 incurable 3 discouraged 4 defenseless Page53-2 1 proper 2 virus 3 lack 4 cheer 5 persuade 6 treatment 7 available 8 discourages Practicing Page124-1 1C 2D 3A 4B 5B 6A 7C 8A 9D 10C Page124-2 1 infected wound 2 unprotected sex 3 transmitted 4 discouraged patient 5 tested blood sample 6 delayed treatment

15. Grammar Page53 2 It’s a pity that she isn’t here and that we are sick. 3 It’s a pity that it is difficult for people to find out the facts about AIDS and that they think that I am a bad or dangerous person. 4 I think that you should give an AIDS patient a hug. 5 I will know I have HIV because I will feel sick. And in fact I don’t have HIV.

16. Page53-2 1 I wish I would grow up to be a happy person. I wish there would be enough cake for everybody. 2 I wish I could travel to another planet. I wish I could be a movie star. 3 I wish I had a great treasure. I wish there was peace on earth. Page54-3 1 I wish I could solve my problem. 2 I wish you didn’t work so hard./ I wish you hadn’t been working so hard. 3 I wish I could forget the terrible scene. 4 I wish we had enough money. 5 I wish the performance would go well. 6 I wish I had many/more friends.

17. Page54-4 1 If I had enough money. I would buy these books. 2 If it were not cold and wet outside, we would have let the children play in the garden. 3 If I were you, I wouldn’t waste so much time playing computer games. 4 If he didn’t have to work hard all day long, he would have time to do the shopping. Page54-5 1 If I were a famous person for a day, I would go to visit our president. 2 If I could be invisible for a day, I would play tricks on my friends. 3 If I could change one thing about myself, I would like to be better at maths. 4 If I were the teacher, I wouldn’t give my students so much homework.

18. Page54 1 Sarah looks at her husband as if he were a stranger. 2 They are talking as if they were friends. 3 Mr Jones speaks to me as if I were a kid. 4 I remember the whole thing as if it were yesterday.