仁爱版九年级英语上册Unit2 topic 2 Section A 课件

1、Unit 2 topic 2 Section A新立镇中学 张秀兰老师制作Ren ai English post The earth is 4,600 million years old, Modern people have lived on the earth for only 35 000 years, but during this time we have changed our planet in many ways .Some things weve done are very good ,While some are not good for the earth.Traffic

2、 In big cities ,cars and buses have Polluted the air .Many people in cities now arein bad health.2. Factories Factories have also polluted the land the water. As a result, many rivers and lakes are dead now3. Few trees All over the world people have cut down millions and millions Of trees. So many k

3、inds of animals and plants are disappearing.Work aloneRead 1a again and choose the best answers.( ) 1 . What does “our planet mean here? a. The sun b. Mars c . The earth d. The moon( ) 2. How old is our planet? a. Its about 35 000 years old . b. Its less than 35 000 years old. c . Its about 4 600 mi

4、llion years old. d .Its more than35000 years old.( ) 3. Which is not true? a. Cars can pollute the air. b . Factories can pollute the water . c . Not all the things we have done are good for the earth. d . The fewer trees, the better.( ) 4 . What is the best title for this Enviroment? a .Problems of

5、 the Enviroment. b. Pollution on the Earth. c. Hope for the future d. The GreenhousEffect. ccdaIn the past ,pandas had a quiet life and plenty of food.Now, pandas cant find enough bamboo to eat.2b Answer the following questions: What did people start killing animals for? What have humans come to realize now?What should we try to do ? For their meat and skin . Humans have come to realize that animal