Ⅲ. 根据短文内容，用方框中所给单词的适当形式填空，每词仅用一次(每空一词)
say slow if strong south
Have you ever heard of shark fin soup? Although it’s expensive in 1. China，you should realize that each time you enjoy a bowl of shark fin soup，you’re killing a whole shark. It is 2. when people catch sharks，they cut off their fins and throw the sharks back into the ocean. This is cruel! Because as we all know，without a fin，sharks can no longer swim and dies 3. . Also，4. the numbers of them drop too low，it’ll bring danger to all ocean life. Many believe that sharks can’t be endangered since they are the 5. in the food chain. But in fact，the numbers of some kinds of sharks have fallen by 90％ in the last 20 to 30 years. Do you still want to have the shark fin soup?

southern; said; slowly; if; strongest

1. 修饰China需用形容词，south的形容词形式为southern，表“中国南方”。2. “It is said that...”为固定句型，意为“据说”，故填said。3. 修饰动词dies需用副词，slow的副词形式为slowly，表“慢慢死去”。4. 此处引导条件状语从句，用if表“如果”。5. 由the可知用形容词最高级，strong的最高级为strongest，表“食物链中最强的”。

Ⅳ. 完形填空
All living things on the earth need other living things to live with. Nothing lives 1. ______ . Sometimes one living thing kills 2. ______ . Each kind of life eats another kind of life 3. ______ live，and together they 4. ______ a food chain. Some food chains are simple，while others are 5. ______ . But 6. ______ food chains begin with the sun，and all food chains become 7. ______ if one of the links disappears.
All life needs the sun to 8. . But only plants can use sunlight directly. They make food from sunlight，water，air and so on. Animals can only use the sun’s energy 9. it has been changed into food by plants. Some of the 10. feed directly on plants. Others eat smaller animals. Meat-eating animals are only 11. plants indirectly.
What about human beings? We’re members of many food chains. We eat wheat，rice，vegetables，fruit and we also eat meat and drink milk. But 12. often break up the food chains. They kill wild animals. They also make rivers，lakes and seas 13. . When these rivers，lakes and seas are polluted，the fish in them 14. be eaten. If people eat the fish，they’ll get diseases.
Each kind of life is linked to all the others. 15. the links puts all life in danger.
()1. A. alone
B. lonely
C. together
D. happily
()2. A. other
B. the other
C. another
D. the others
()3. A. for
B. so that
C. and
D. in order to
()4. A. reflect
B. form
C. change
D. draw
()5. A. easy
B. funny
C. important
D. difficult
()6. A. any
B. all
C. some
D. most
()7. A. better
B. broken
C. stronger
D. nicer
()8. A. live on
B. eat with
C. stick to
D. wait for
()9. A. after
B. before
C. until
D. by the time
()10. A. animals
B. plants
C. food
D. people
()11. A. making
B. catching
C. eating
D. feeding
()12. A. people
B. animals
C. plants
D. lives
()13. A. small
B. wide
C. clean
D. dirty
()14. A. can
B. can’t
C. must
D. needn’t
()15. A. Making
B. Breaking
C. Correcting
D. Following

1.A
2.C
3.D
4.B
5.D
6.B
7.B
8.A
9.A
10.A
11.C
12.A
13.D
14.B
15.B

1.根据“All living things on the earth need other living things to live with.”可知，没有生物可以单独生存，alone表示单独地，lonely表示孤独的，C一起，D开心地，所以选A。
2.one...another表示三者及以上中的一个和另一个，是固定搭配，所以选C。
3.“Each kind of life eats another kind of life”和“live”之间需要目的状语，so that后接从句，in order to后接动词原形，所以选D（题目序号按题中从1开始计，本题为第3题，下同）。
4.根据“a food chain”和文章意思，各种生物一起形成了一个食物链，reflect反射，form形成，change改变，draw画画，所以选B。
5.根据“Some food chains are simple，while others”可知，这里表示转折，应选与simple相反的词，所以选D的困难（difficult）的（相对）复杂（的）（本题序号为5，对应选项D）。
6.根据“food chains begin with the sun”和常识可知，所有食物链都从太阳开始，所以选B。
7.根据“if one of the links disappears”可知，如果食物链中的一个环节消失，那么食物链就被破坏，所以选B。
8.根据“But only plants can use sunlight directly.”可知，这里讲的是生物需要太阳才能生存，live on以...为食，可以延伸为需要，所以选A。
9.根据“Animals can only use the sun’s energy”和“it has been changed into food by plants.”可知，动物只能使用被植物转化为食物的太阳能，after在...之后，所以选A（本题为第9题）。
10.根据“feed directly on plants”和常识可知，动物直接吃植物，所以选A的动物（本题序号为10）。
11.根据“Meat-eating animals”和“plants indirectly.”可知，食肉动物间接吃植物，eating吃，所以选C（本题序号为11）。
12.根据“They kill wild animals.They also make rivers，lakes and seas”可知，这里指的是人类，所以选A（本题序号为12）。
13.根据“When these rivers，lakes and seas are polluted”可知，人类让河流、湖泊和海洋变脏，dirty脏的，所以选D（本题序号为13）。
14.根据“When these rivers，lakes and seas are polluted”可知，水被污染后，鱼就不能被吃，can’t不能，所以选B（本题序号为14）。
15.根据“Each kind of life is linked to all the others.”和“puts all life in danger”可知，破坏食物链将使所有生命处于危险之中，breaking破坏，所以选B（本题序号为15）。