This is the earth. The green part is land. The blue part is sea. The white part is clouds. Our earth is very beautiful and interesting. There are rivers, streams, seas and lakes. There are hills and mountains. There are woods, jungles and forests. There are many countries and cities. There are many people live in them. Do you think the earth is very wonderful?
Many years ago, the earth is very clean. But nowadays there is much pollution on the earth. There is air pollution, land pollution and water pollution。People are cutting down the forests.
Many wild animals, birds and insects lose their homes. People are killing animals for their food and their skins. It’s very cruel. People are polluting the land, the water and the air. People must stop doing this. We must save the earth.
四年级下册-Would you like to take a trip?-Lesson 32
人教(新版)英语四下《Unit 2 It is time to get up》(lesson11)flash课件
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson28)flash课件之一
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson25)flash课件之一
人教(新版)英语四下《Unit 1 welcome to my new home》(lesson2)flash课件之一
人教(新版)英语四下《Unit 2 It is time to get up》(Lesson 12)ppt课件
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson36)flash课件之一
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson32)flash课件之一
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson35)flash课件之一
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson34)flash课件
人教(新版)英语四下《Fun Time 2 Part 1》ppt课件
人教(新版)英语四下《Unit 1 welcome to my new home》(lesson6)flash课件
四年级下册-Would you like to take a trip?-Lesson 34
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson35)flash课件
人教(新版)英语四下《Unit 4 there are seven days in a week》(lesson19)ppt课件
人教(新版)英语四下《Unit 1 welcome to my new home》(lesson1)flash课件之一
四年级下册-Would you like to take a trip?-Lesson 35
人教(新版)英语四下《Unit 2 It is time to get up》(lesson10)flash课件
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson26)flash课件
四年级下册-Would you like to take a trip?-Lesson 31
人教(新版)英语四下《Unit 2 It is time to get up》(lesson7)ppt课件
人教(新版)英语四下《Unit 1 welcome to my new home》(Lesson2)flash课件
四年级下册-Would you like to take a trip?-Lesson 36
人教(新版)英语四下《Unit 4 there are seven days in a week》(lesson20)flash课件
人教(新版)英语四下《Unit 3 How many classes do you have》(lesson15)ppt课件
人教(新版)英语四下《Unit 2 It is time to get up》(lesson7)flash课件
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson31)flash课件
人教(新版)英语四下《Unit 1 welcome to my new home》(lesson4)flash课件之一
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson27)flash课件之一
人教(新版)英语四下《Unit 3 How many classes do you have》(lesson16)flash课件