.
8was shocking 9was suffering 10told
11won’t be 12seem 13said 14was
15would get 16didn’t take 17Do 18know 19spend 20do 21study 22is 23isn’t
24have worked 25stop 26take 27watch 28have 29started 30is 31get 32feel 33have 34is 35is
36will take/am going to take 37study 38write 39have P58Ex.2 1c 2f 3d 4a 5g
.
.
6e 7b
P58Ex.2
1. worry a little be careful about worrying too much
2. relaxed became ill headaches didn’t sleep well didn’t feel like eating was tired
3. went to the doctor learned about stress P58Ex.3
1. The doctor told Li Yue to keep a balance in her life between work and relaxation.
2. Li Yue says you could become ill.
3. Li Yue suggests that the students have fun, keep in touch with friends and do some exercise every day. P60Ex.1
1. It provides care and support for people suffering from HIV/AIDS and trains young people to teach other people about AIDS.
2. Volunteers who come from a similar group and are about the same age. 3. Because they are being taught by people very much like themselves. 4. In the past it was mainly drug users and people who had been carelessly transfused who were becoming infected with AIDS. Today, an increasing number of young people are becoming infected through sexual activity. 5. The government believes that if they do not act quickly to stop the spread, the number of people in Chinainfected by HIV/AIDS could be as high as 10 million by the year 2010.
.
.
Unit4
课内练习答案（P27Ex.1）
1. Sophie Armstrong. Earth Care.
2. Dr Janice Foster, Charles Keeling, George Hambley.
3. There are some very different attitudes among scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it.
4. The first graph shows the temperature increase of one degree Hahrenheitbetween 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.
5. Global warming / the warming of the earth. P27Ex.2
1T2T3F4T5T6F P28Ex.1
trend1 fuel2 state2 consume1 glance2 P28Ex.2
1data, kept on
2quantities, run out 3build up, catastrophe 4come about 5consequence 6phenomenon 7graph 8per 9even if
10resulted in P29Ex.2
1. It is +划线部分+that / who + warned……. 2. It is +划线部分+that + gives…… 3. It is +划线部分+that + much …… 4. It is +划线部分+that + consume…… 5. It is +划线部分+that + carbon…… 6. It is +划线部分+that + low-lying…… 7. It is +划线部分+that / who + have …… 8. It is +划线部分+that + scientists……
9. It is +划线部分+that + the level of the sea could rise in the years ahead
.
.
because of global warming.
10. It is +划线部分+that +in the future …… P31Ex.2
Fossil: 1. produce carbon dioxide 2. cheap and concentrated form of energy
Wind: 1. clean 2. not practical: need huge areas of land to provide enough energy
Energy: 1. clean 2. not very practical with present technology Nuclear: 1. does not produce carbon dioxide 2. dangerous P31Ex.4 1factories 2energy 3problem 4global 5developed 6developing
7developing 8dioxide 9blame
Workbook练习答案（P62Ex.2）
1an organization by kids for kids; concerned with the environment 2four students in Australia; in 1996 3to draw attention to the environment 4The horse that Saved the World
5to explain why it is better for the environment if we walk to school, ride bikes or go by bus P62Ex.3 2∨6∨
1planted trees
2developed activities that reduce, reuse and recycle waste 3planned ways to reduce recycle and reuse plastic bags P63Ex.1
1. I think our conference was very successful on the whole. professor Brown’s presentation was warmly received.
2. There is a wide range of energy sources: coal, oil, natural gas, water power, nuclear power and so on.
3. Since your bicycle is broken, you can use mine, so long as you take care of it.
4. Sue often buys food at the nearby store and heats it in the microwave for
.
.
lunch. Then she drinks a can of coke to refresh herself and goes back to the office.
5. I would like to thank Mr Smith on behalf of the school for his work as a scholar, an engineer and educator.
6. She is opposed to war, cruelty to animals, racism and so on with a commitment to help all living things.
7. His programme has been passed smoothly because most of the representatives in the conference subscribed to it.
8. In recent years, the winter temperature in this region tends to go up, and one of the main reasons which have resulted in this consequence is the air pollution.
9. His main contribution to our country is that he suggested on controlling population growth.
10. The chairman of the conference stated that though the people at presentare in disagreement on some issues, they are in agreement with each other on environmental protection.
11. The existence of line in outer space is still a mystery.
12. Experts said that the global temperature would show a tendency to increase. P64Ex.2
1mild 2circumstance 3flood 4catastrophe 5steadily 6casual 7average 8widespread
9electrical 10motor 11advocated 12put up with 13kept on P64Ex.1
1. It was in 1996 that the first children’s conference on the environment was organized in Australia.
2. It is children that / who run Millennium Kids.
3. It is on the Internet that you can find out more about Millennium Kids. 4. It is at the yearly conference that the young people decide which projects they want to concentrate on.
5. It is plastic bags that Millennium Kids is asking us to reduce, reuse and recycle. P65Ex.2
1987 ian Kierman competed in a round-the-world He was shocked at the pollution in the ocean
1989 Clean-up Day for Sydney Harbour 40,000 volunteers; collected old car bodies, plastics, glass bottles, cigarette butts 1990 the first Clean Up Australia Day 300,000 volunteers
2001 Clean Up Australia Day most common kinds of rubbish: cigarette
.