Question

The planets aren’t the only wanderers(漫游者) of the sky. There’re some things even farther and longer. Long after people were no longer afraid of planets, they still thought the comets(彗星) were bad objects that traveled in the sky. They were afraid that the comets would suddenly land on the earth and hurt them.
But, in fact, even if a comet did hit the earth, nothing much happened. A comet is really a harmless （無害的）thing.
Comets have round heads and long tails , and they are very bright. Sometimes they look like heads with long hair flying with them. That’s why they’re called comets. Comet means long-haired.
Like the stars and planets, comets are far away. But we can know its size. The head of a small comet is as wide as the Pacific Ocean. And a big comet’s head is ten times as big as the earth. Its tail is millions of kilometers long. Then why wouldn’t the great big thing hurt us if it hit the earth? Because it isn’t solid. It’s thin like cloud. Its tail is nothing but bright gas. And its head is made of small pieces and they could not hurt the earth.
Some comets can be seen for a few months. Then they go away. Some of them come back in a certain number of years. Some are never seen again.
Perhaps these comets that never return have broken into pieces. For some astronomers  think that shooting stars(流星) are pieces of broken comets.
小題1:People were afraid ________.

A．comets are different from planets

B．comets travel in the sky

C．comets are much bigger than the earth

D．comets could hit the earth

小題2:Comets have long tail like ________, so we call them comets.

A．long hair

B．round heads

C．round dishes

D．wide wings

小題3:From the passage we know the tails of comets are made of  ________.

A．water

B．solid

C．gas

D．small stones

小題4:The underlined word “astronomers” may mean ________ in Chinese.

A．心理學家

B．藝術家

C．天文學家

D．考古專家

小題5:Which of the following is TRUE ?

A．A comet is a kind of planets.

B．Comets are all ten times as big as the earth.

C．People can hardly see comets.

D．Shooting stars may come from the broken comets.

Answer 1

小題1:D
小題2:A
小題3:C
小題4:C
小題5:D

試題分析：短文大意：這篇短文主要講述了彗星名稱的由來，以及彗星的結構。告訴我們彗星之所以不會撞到地球，是因為彗星是又氣體構成的。
小題1:細節理解題。根據短文第一段They were afraid that the comets would suddenly land on the earth and hurt them.描述，可知人們擔心彗星會撞擊地球。故選D。
小題2:細節理解題。根據短文第三段Sometimes they look like heads with long hair flying with them. That’s why they’re called comets. 描述，可知彗星之所以被稱作彗星是因為它們有常常的尾巴。故選A。
小題3:細節理解題。根據短文第四段Its tail is nothing but bright gas. 描述，可知彗星的尾巴是有氣體構成的。故選C。
小題4:詞義猜測題。結合常識，可知本句話是天文學家的發現，故選C。
小題5:細節理解題。根據短文最后一句話For some astronomers  think that shooting stars(流星) are pieces of broken comets.描述，可知流行來自破碎的彗星。故選D。