Question

Our sun is a star, and nine worlds (天體) move round it. Worlds like these are planets. But there are other stars, other suns, not only thousands of them, but millions of them. Do different stars have planets? We can see the planets round our own sun. but we haven’t been anymore. The stars are too far away from us. Stars give out light, but the planets don’t have any light of their own. So we can’t see them. They are too far, and too dark. Still, we can tell that some stars have planets. While a big planet goes round, it pulls its star to one side. And sometimes we can see this. Then we know that the star has a planet. For example, Barnard’s Star is a small red star. And it is the quickest star in the universe. But sometimes it moves slower, and then quicker again. We have known Bernard’s Star for many years, and now we are sure it has a planet.

1.A star is a large body in the universe. It _________.

A. moves round our sun B. has light of its own

C. can also be called a sun D. both B and C

2.Which of the following is not true?

A. The earth is one of the sun’s world’s

B. There are millions of suns in the universe

C. The worlds are very bright

D. some stars have planets

3.We can see the planets round our sun. But we can’t see ________.

A. nine worlds in the universe

B. the planets round other stars

C. the satellites round the earth

D. other stars

4.Barnard’s Star moves more quickly than ________.

A. most stars B. any other star

C. its planet D. the planets round the sun

5.How can people know that there is a planet round Barnard’s Star?

A. Sometimes they see that the planet pulls the star to one side and makes it move slower.

B. The planet is shining

C. The planet is next to our earth.

D. The planet is a red one.

 

Answer 1

1.B

2.C

3.B

4.B

5.A

【解析】

試題分析：本文敘述了宇宙中的天體行星和恒星。恒星會發(fā)光，但是行星自己不會發(fā)光。有些恒星有一些行星圍繞著，一顆行星圍繞恒星時，會把這顆恒星拉到一邊。

1. give out light,可知恒星會發(fā)光，故選B。

2.but the planets don’t have any light of their own.可知行星自己不發(fā)光，故不是所有的天體都很亮，故選C。

3.細節(jié)理解題。根據(jù)We can see the planets round our own sun. but we haven’t been anymore.我們可以看到圍繞著太陽轉的行星，但是我們看不到圍繞其他恒星轉的行星。故選B。

4.推理判斷題。根據(jù)Barnard’s Star is a small red star. And it is the quickest star in the universe.可知Barnard星在宇宙中時最快的星，因此它比其他任何一顆星都快，故選B。

5.推理判斷題。根據(jù)While a big planet goes round, it pulls its star to one side. And sometimes we can see this. Then we know that the star has a planet. But sometimes it moves slower, and then quicker again.可知一顆行星圍繞恒星時，會把這顆恒星拉到一邊，Barnard’s Star有時慢一點，有時快一點，可知有行星在圍繞著它，把它拉到一邊，它的速度就慢下來，故選A。

考點：科普類短文閱讀。