If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

　　A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.

       If a comet isn’t a star, what is it then?

　   Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.Many people perhaps have seen a comet. However no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.

　　An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.

1.A comet is like ________.

A. sun      B. moon     C. sunlight    D. the earth

2.A large part of a comet is ______.

A. water and rock

B. water frozen into pieces of ice and mixed with iron

C. ice, iron and rock dust

D. only a few big pieces of rock

3.Maybe many people _______.

A. haven’t seen any comets      B. have seen all comets

C. have seen a comet at daytime  D. have seen a comet

4.Some comets keep coming back ________.

A. at any time  B. at noon  C. at regular times  D. at daytime

5.Halley’s Comets came back _____.

A. in 1990    B. in 1980     C. in 1986      D. in 1989

阅读下面短文，把方框中的句子还原到文中，然后完成第五小题。（每题1分，共5 分）

If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

　　A comet sometimes looks like a star.? ____1.____ It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.

??? If a comet isn’t a star, what is it then?

　? Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. ____2.______ These clouds, together with the dust, form a long tail.

Many people perhaps have seen a comet. _____3._____ .There may be millions of comets, but only a few come close enough for us to see.

An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky.? ______4.____? . Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.

A. However no one knows how many comets there are.

B. Some comets move out of our sight and never come

C. Like a planet, a comet has no light of its own.

D. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it.

5.Which of the following is not true?

A. A large part of a comet is ice, iron and rock dust

B. Some comets keep coming back at any time

C. Halley’s Comets came back in 1986

D. Maybe many people have seen a comet

 一What         is it ?          一         black and yellow.

A. color; They are   　　　　　　　　    B. colors; It’s  

C. color; It’s   　　　　　　　　　　     D. colors; They are

阅读理解

　　Jenny began to go to school when she was at the age of six. She liked her first day very much. Her teacher, Miss Black, was very nice, too.

　　At the end of the second day, the other children left the classroom after school, but Jenny stayed behind and waited. At first, Miss Black had some work to do and did not see Jenny, but then she looked up and saw her.

　　“Why not go with the others, Jenny?” she asked her kindly, “Did you want to ask me some questions?”

　　“Yes, Miss Black,” Jenny said.

　　“What is it?” Miss Black asked.

　　“What did I do in school today?” Jenny said.

　　Miss Black laughed, “What did you do in school today?” she said, “Why did you ask me that, Jenny?”

　　“Because I'm going home now,” Jenny answered, “and my mother's going to ask me.”

1．Jenny went to school ________.

[　　]

A．when she was too old

B．when she was at the age of seven

C．when she was six years old

D．when she was old

2．The second day, Jenny didn't go with ________.

[　　]

3．Why did Jenny stay behind and wait after school? Because she ________.

[　　]

A．had some homework to do

B．waited for her mother

C．waited for her teacher to come

D．wanted to ask her teacher a question

4．What question did Jenny ask her teacher?

[　　]

A．What did you do in school today?

B．Did you want to ask me some questions?

C．Why didn't you go with the others?

D．What did I do in school today?

5．Why did Jenny ask such a question? Because ________.

[　　]

A．her mother always wanted to know it

B．she was going to go home

C．her teacher always wanted to know it

D．she didn't like her teacher.

You have(有)it．You read(阅读)it．There are some pictures(图片)in it．What is it？ It's a ________．

[　　]