用方框中所给词的适当形式填空，使短文正确、通顺。每个词限用一次。
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The universe is everything out or in space. (1)
knows how big the universe is. When we
talk about the universe, we mean the earth, the sun, the moon and the (2)
.
Now let me tell you something about our earth. The earth is a huge ball. It (3)
round and
round in space. Its surface (表面) is (4)
by water and land. If you are in a space plane and
look (5)
at the earth from up in space, you will see lots of clouds over the surface of the earth. (6)
clouds you will see the blue colour of the oceans and seas. (7)
two-thirds of the
earth is covered with water.
We live on the outside (8)
of the earth. Around and above us is the air. The earth takes
twenty-four (9)
to turn all the way round-that is one day and one night. When your country is
facing (朝向) the sun, it is day-time for you. But as the earth turns you away from the sun, everything
around you grows, (10)
.
Can you tell me something more about the earth or the universe?