阅读下列短文，从所给的四个选项中，选出最佳答案　　

完形填空　　

　Many people like to watch TV．Watching TV is 　1　 of the most important activities (活动) of the day．TV brings the outside world closer to people' s homes．Some people 　2 　the world is 　3 　than before．Because of TV．

　What' s going on in other countries? How 　4　 people live in faraway places? 　5 　there a good sports game somewhere? What' s life in the deepest (最深的) part of the sea?

　If you want to 　6 　these and other kind of questions, just turn 　7 　the TV and watch it．Of course people can also learn through reading or listening 　8 　the radio．But TV can help them learn better and more easily, 　9 　? Because they can hear and watch too．TV can give 　10 　new ideas．It' s a wonderful thing．

阅读理解：阅读下列短文，从所给的四个选项中，选出最佳答案

　When man began to search(探索) the skies, he saw a lot of things. In the universe, the earth seemed to be just a small bit of dust. It is only a small planet, and travels around the sun. The sun, together with its planets, travels in the Milky Way(银河), our galaxy(星系). The Milky Way has about thirty billion stars like our sun, and is one of about a hundred million galaxies in the universe.

　Because the space is so great, it is difficult to work out how far away a star is. Instead of kilometres, we have light - years. A light year means how far light travels in one year. Our nearest neighbour galaxy is more than 900,000 light - years away from the earth.

(1)  Man has known that .

[　　]

A．the Milky Way is the only galaxy

B．other galaxies are near ours

C．the sun is a large star in the Milky Way

D．the earth is a small part

(2)  A galaxy is the name of .　　　

[　　]

A．a large group of stars

B．the sun

C．planets like the earth

D．the universe

(3)  In the Milky Way we can see many .　　　

[　　]

A．galaxies　　　　　 　　B．suns like ours

C．stars like our sun　　　　D．Both B and C

(4)  We use to work out how far a star is from us.　　　

[　　]

A．kilometres　　　　   　B．metres

C．light - years　　　　　　　   D．months and years

(5)  Our galaxy's nearest neighbour is as far away as light can travel in .　　　　　　　　　

[　　]

A．a year　　　　　　 　B．900,000 years

C．3 seconds　　　　  　D．9 million years