We live on Earth. It's 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 with 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, night is coming. And it's daytime for the other half.
How many planets are running around the sun?

A．Seven.

B．Eight.

C．Nine.

D．Ten.

_________ of the Earth is covered with water.

A．70%	B．30%
C．About 70%	D．About 30%

Which of the following sentences is RIGHT?

A．All the planets and stars are running around the sun.

B．The Earth is the nearest planet to the sun.

C．It takes the Earth about 365 days to run around the sun.

D．The Earth only runs around the sun.

When _________, it's daytime.

A．the Earth is running around the sun

B．the Earth is away from the sun

C．the half of the Earth is away from the sun

D．the half of the Earth is facing the sun

Where can you read this passage?

A．Storybooks.	B．cook books.
C．Cartoon books.	D．Science books.