Question

    On the night of February 9, 1986, astronomers from 51 countries looked through their telescopes. They were watching for an old visitor from very far away. And sure enough, there it was, right on time! A bright light moved across the blackness. It was Haley’s comet(哈雷彗星).

    Haley’s comet is named for the English astronomer, Edmond Haley, who saw it in 1682．Haley knew that people had seen bright lights in the sky in 1531 and again in 1607．He did a little mathematics and said the visitor would come back again in 1785．He was right. Haley said that in the future, men would travel to the comet and ride it around space!

    As the comet came near the earth in 1986, the European Space Agency flied a rocket called Grotto. Grotto came within 605 kilometers (376 miles) of the atmosphere of the comet. It is about 15 kilometers long and 8 kilometers wide (9.3 miles by 5 miles). Its atmosphere contains the element nitrogen (氮气) but no air. The centre of the comet is made of dust and solid water. It’s a very cold, lonely place. Would you like to ride the comet, or do you prefer riding the earth?

1．From the article we know that Haley’s comet return every ________ years?

A．77

B．76

C．78

D．1758

2．We can infer that the comet will come back next in________?

A．2060

B．2066

C．2062

D．2000

3．The centre of comet is made of ________.

A．dust and nitrogen

B．ice and dust

C．water and ice

D．dust, ice and air

4．From the article we know that the comet is ________.

A．a new comer

B．an old visitor

C．a planet of the earth

D．a planet of the moon

 

Answer 1

答案：1B2C3B4B
提示：

1.　　　　 文中提到彗星1531年和1607年来过，这样算得时隔76年 2.　　　　 最近一次出现是1986年，加上76年，应该是2062 3.　　　　 文章倒数第二行提到，彗星是由尘埃和固态水组成，也就是冰 4.　　　　 从文中可以推断出，从过去到现在彗星每隔一段时间必定来一次，是个old visitor