Question

Food Chain(食物链)

All living things on the earth need other living things to live with．Nothing lives_______．

Most animals must live in a group，and even a plant grows_______together with others of the_______kind．Sometimes one living thing kills another，one eats and the other is_______．Each kind of life eats another kind of life in order to live，and together they form a food chain．Some food chains are simple，while others are not．But all food chains begin with_______，and all food chains become_______up if one of the links disappears．

All life needs sunlight to live on．But only plants can use sunlight directly．_______are‘factories’．They make food_______sunlight，water and things in the soil and air．

Plants feed all living_______．Animals can only use the sun’s energy after it has been changed into food by plants．Some animals feed directly________plants，and others eat smaller animals．Meat-eating animals are________eating plants indirectly．

What about human beings? We are members of many food chains．We eat wheat，rice，vegetables，fruits and________．We also eat meat and drink milk．But men often break up the food chains．They kill wild animals．They also make rivers，lakes and seas________．When these rivers，1akes and seas are polluted，the fish in them________be eaten．If men eat the fish，they will________strange diseases．

Each form of life is linked to all others．Breaking the links puts all life in danger．

1.A. alone B. on C. in D. lonely

2.A. close B. nearly C. nearby D. closer

3.A. very B. same C. so D. different

4.A. broken B. eaten C. given D. taken

5.A. the air B. the star C. the sun D. the moon

6.A. gone B. taken C. put D. broken

7.A. Birds B. Living things C. Plants D. Animals

8.A. from B. out C. by D. with

9.A. things B. thing C. animals D. persons

10.A. in B. for C. on D. to

11.A. just now B. only C. not D. just

12.A. also B. so C. others D. so on

13.A. blue B. dirty C. clean D. clear

14.A. won’t B. will C. can D. can’t

15.A. carry B. bring C. get D. take

1.A 2.A 3.B 4.B 5.C 6.D 7.C 8.A 9.A 10.C 11.B 12.D 13.B 14.D 15.C 【解析】 这篇短文给我们介绍了自然界中的食物链，食物链以太阳开始，植物利用阳光制成食物，养活这个世界上的其他生物，包括人类。食物链是很重要的，但是人类有的时候却在破坏食物链...

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