Question

Most animals have little connection with animals of a different kind, unless they hunt them for food. Some­times, however, two kinds of animals come together in a partnership(伙伴關(guān)系) which does good to both of them. You may have noticed some birds sitting on the back of sheep. This is not because they want a ride, but because they find easy food in the parasites(寄生蟲(chóng)）on sheep. The sheep allow the birds to do so be­cause they remove the cause of discomfort. So although they can manage without each other, they do better together.

Sometimes an animal has a plant partner. The rela­tionship develops until the two partners cannot do with­out each other. This is so in the corals(珊瑚）of the sea. In their skins they have tiny plants which act as “dustman”, taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from light so that they cannot live normally, the corals will die.

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

A. they can eat its parasites

B. they consider the sheep as their shelter

C. they enjoy traveling with the sheep

D. they find the position most comfortable

2.The underlined word “they” in the first paragraph refers to _______.

A. birds and parasites                                              B. sheep, birds and parasites

C. parasites and sheep                                            D. birds and sheep

3.It can be learnt from the text that the coral depends on the plants for ________.

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

4.What does the second paragraph mainly discuss?

A. Some plants depend on each other for food.

B. Some animals and plants develop their relationship easily.

C. Some animals and plants depend on each other for existence.

D. Some animals live better together.

 

Answer 1

【答案】

 

1.A

2.D

3.C

4.C

【解析】

試題分析：文章介紹自然界中有的動(dòng)物和動(dòng)物之間看相處的很好，還有的植物和動(dòng)物是互相依存的關(guān)系。

1.細(xì)節(jié)理解題。答案即在“This is not because they want a ride, but because they find easy food in the parasites (寄生蟲(chóng)) on sheep.”一句之中�？芍�鳥(niǎo)喜歡坐在羊的身上，是想吃羊身上的寄生蟲(chóng)，選A

2.猜詞題：前文中的“The sheep let the birds do so because they can stop the parasites from troubling them.”的意思是說(shuō)“綿羊讓鳥(niǎo)兒落在自己身上，因?yàn)轼B(niǎo)兒可以將它們身上的寄生蟲(chóng)吃掉�！�；另一句“So though they can do with it by themselves…”的意思是說(shuō)“盡管它們自己也能對(duì)付寄生蟲(chóng)……”。綜合上面兩句話的意思，再結(jié)合“…they can do better together with each other.”這一句話，可知they指的是鳥(niǎo)和羊，即得答案為D

3.細(xì)節(jié)題：根據(jù)第二段的句子：“…taking the useless things from the coral and giving oxygen in return. That is what the animal needs to live.”這兩句話可知，珊瑚需要植物提供的氧氣才能生存下去。選C

4.推理題：根據(jù)第二自然段的內(nèi)容，Sometimes an animal has a plant partner.珊瑚和它們體內(nèi)的植物具有相互依存的關(guān)系。C

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