Unit 3　The Earth

Ⅰ.听句子,选出与所听内容相符的选项。每个句子读两遍

1.There is a map on the wall of the classroom.

2.It is important for us to save water.

3.Stop playing football now,Mike.

4.They burn wood to make energy.

5.The school provides us with school buses.

Ⅱ.听对话和问题,选择正确的答案。每组对话及问题读两遍

6.M:Are there any eggs in the bag?

W:No,there aren't.But there are five apples in it.

Q:What are there in the bag?

7.W:What is it?It can fly high in the sky.

M:I think it's a kind of bird.

Q:What do we know about it?

8.W:There are more and more cars in our city.I'm worried about it.

M:Yes.The gases from the cars pollute air a lot.

Q:What kind of pollution is there in the city?

9.M:What do you do to protect the Earth?

W:The air is polluted by the gas from the car.So I usually ride to school instead of taking a car or a taxi.

Q:How does the girl protect the Earth?

10.W:Look,lots of fish in this river are dying because it's too dirty.

M:We should do something to protect them.

Q:What are they talking about?

Ⅲ.听短文,选择正确的答案。短文读两遍

 We live on the Earth, so it is our home. But how much do you know about it?Let me tell you something about our Earth.

 The Earth is like a huge ball. Like the other seven planets, the Earth is running around the Sun. It's the third nearest one to the Sun. It takes the Earth about 365 days to run around the Sun. At the same time, the Earth is going around itself. If you are in space, you can see lots of white clouds over the surface of the Earth. Through the clouds,you can see the blue colour of the oceans, and the brown colour of the land. About 70% of the Earth is covered by water.

 Why do we have day and night? When the half of the Earth is facing the Sun, it's daytime. As the Earth turns, and this half is away from the Sun,so night is coming. And it's daytime for the other half.