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根据短文内容，选择正确答案。
The Sun
There is nothing
more important to life than the sun. Without the sun all living things on the
Earth would die.
The sun is a
star. In the sky there are thousands of stars like the sun.
They are as large
as the sun and as hot as the sun. At night you can see many stars, but in the
daytime you can only see one star-the sun.
The sun is much
nearer to us than any other stars. That is why it looks like the biggest and
brightest of all the stars. The distance of the sun from the Earth is as much
as 150 million kilometres. Most of the stars are thousands of light years away
from the Earth.
