【題目】Most animals only have animals of a different kind for food. But sometimes two kinds of animals come together in a partnership (伙伴關(guān)系) which is good for them. You may have noticed some birds on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生蟲) on sheep. The sheep let the birds do so because they can stop the parasites from troubling them. So though they can do with it by themselves, they can do better together with each other.

Sometimes an animal has a plant partner. The relationship develops until the two partners cannot do without each other. This is so in corals of the sea. Inside their bodies they have very small plants, which act as “cleaners”, taking the useless things from the coral and giving oxygen in return. That is what the animal needs to live. If the plants are killed, or are even kept from receiving light so that they cannot live as usual, the corals will die.

1Some birds like to sit on a sheep because ________.

A. they can eat its parasites B. they enjoy traveling with the sheep

C. they can’t live without its parasites D. they want to find the warm place

2The underlined(畫下劃線) word “they” in the first paragraph means _________.

A. birds and parasites B. birds and sheep

C. parasites and sheep D. birds, parasites and sheep

3We learn from the passage that corals need plants for _______.

A. friends B. light C. food D. oxygen

4What is the second paragraph mainly about?

A. Some animals and plants cannot live without each other.

B. Some animals and plants cannot develop their friendship easily.

C. Some plants eat each other.

D. Some animals live better together.

【答案】

1A

2B

3D

4A

【解析】

短文大意:本文是一篇說明文,介紹了自然界中動植物的關(guān)系,說明有的動物和動物之間看似相處的很好,還有的植物和動物是互相依存的關(guān)系。

1題意:有些鳥喜歡坐在一只綿羊身上,因?yàn)?/span> 。考查細(xì)節(jié)理解題。根據(jù)This is not because they want a ride, but because they find easy food in the parasites on sheep.,可知選A。

2題意:第一段下劃線 “they”一詞意思是_____。考查詞義理解題。根據(jù)The sheep let the birds do so because they can stop the parasites from troubling them.,可知they指的是鳥和羊,故選B。

3題意:我們從文中得知珊瑚需要植物來 。考查細(xì)節(jié)理解題。根據(jù)第二段句子…taking the useless things from the coral and giving oxygen in return. That is what the animal needs to live.可知,珊瑚需要植物提供的氧氣才能生存下去,故選D。

4題意:第二段主要講的是什么?考查段意理解題。A. Some animals and plants cannot live without each other. 有些動植物沒有彼此就不能生存。B. Some animals and plants cannot develop their friendship easily. 一些動物和植物不容易發(fā)展它們的友誼。C. Some plants eat each other. 有些植物會互相吃掉對方。D. Some animals live better together. 有些動物在一起生活得更好。根據(jù)第二自然段的內(nèi)容,結(jié)合句子Sometimes an animal has a plant partner.,可知珊瑚和它們體內(nèi)的植物具有相互依存的關(guān)系,故選A。

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