1. Unit 9 Lesson 34 Saving the earth --By Gu Bingyu

4. earth air water most serious problems

5. too many sheep and cattle all the grass be eaten grass never grow again ; the land become desert

6. smoke from factories, power stations and cars

7. accidents I. II. Time : 1986 Place : at a nuclear power station in Russia Results :125,000 die Time : Place : Results : 1984 at a factory in the town of Bhopal in India 2500 be killed; many lose sight

8. waste from factories and cities

9. 1989 35,000 34,000 10,000 4,800 a sinking oil tanker

10. summary earth air water factcausesresults desert grow every year be polluted; chemical rain be polluted; diseases cattle ; trees be cut down have less farm land smoke from… ; accidents forests be destroyed; fish be killed ; do harm to people waste from … ; accidents living things be killed ; have less drinking water ; nowhere to swim

11. Choose the best answers 1.Which of the following statements is not true according to the passage? A. Farmers are increasing the numbers of their cattle. B. Farmers are limiting the numbers of their cattle. C. Heavy rains and strong winds are destroying the valuable soil. D.Fewer trees are left to hold the soil in place on the hillside. 2.Air pollution doesn't cause _______. A. the destroying of forests B. the killing of fish in lakes C. illnesses and injuries to people D. the spreading of clouds of radiation 3.What is the possible reason why the Mediterranean can’t clean itself? A.One quarter of the shores are polluted. B. A lot of diseases are present in the water. C. It lies between Europe and Africa. D. It has only one narrow entrance to the ocean.

12. 4. The 1 st part of the passage is mainly about ________. A. the reasons why the area of desert is growing B. the numbers of cattle farmers should keep C. the valuable soil strong winds blow away D. the damage rains and winds bring about 5. If people change their habits, pollution _______. A. can be completely stopped B. will become less and less C. can do less damage to people D.will do no harm to people 6. According to the text _________ are the worst enemy of nature. A. cattle B. humans C. deserts D. chemicals

13. Fill in the blanks with suitable words. 1. The area of desert in the world is growing. One cause of the problem is the increase of the number of _________, which eat up grass. Without grass, land turns into ________. ________ problem is that trees are cut down. There is nothing to ________ the soil. Strong winds also _______ away the soil on the top of the fields. 2. Air pollution comes from factories, power stations and cars. ________ in the smoke from power stations can destroy trees and kill the fish in the rivers, lakes and seas. Time and time again there are serious radiation accidents that ________ the air. Many people were ______ or killed. 3. Waste from factories and cities can also pollute water. Oceans are able to clean ________, but certain seas, once they are polluted, are not able to do so. Lakes also have the same ________. Some lakes have been seriously _______. A lot of diseases are ________ in them, so they are not safe for _________ and lots of animals and plants ___ them have been killed. cattle desertAnother hold blow Chemicals pollute injured themselves problems dirtiedpresent swimming in

14. Homework 假如你是班长，现在要你代表全班同学给市长写一封信反映学 校前小河被污染的情况。 内容应包括以下几点： 1 。过去河水清澈见底，还有小鱼在水中游来游去。 2 。现在河水又臭又脏，水面上到处都漂着各种垃圾。 3 。河水被污染的原因是沿河几家工厂大量排放污水和沿 河居民乱丢垃圾。 4 。希望政府能采取一些措施来解决这一问题。 5 。 呼吁人们保护我们的环境。 字数： 100 字左右 Dear Major,