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In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be____36____ .
Today things are___37_____, the world has become too___38____ . We are using up our natural resources too quickly, and at the same time we are___39____ our environment with dangerous chemicals. If we continue to do this, human life on the earth ___40____survive.
Everyone___41_____ today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing__42_____ , more and more fish are caught. We know that if too many trees are cut down, ___43____will disappear and nothing will grow on the land. Yet, we ___44_____to use bigger and more powerful machines to __45____more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.___46_____, in most countries wastes are ___47______put into rivers or into the sea, and there are _48_____laws to stop this.
We know, too, that if the___49____ of the world continues to rise at the present rate, in a few years, there will not be enough___50_____. What can we do to solve these problems ?
It we eat more vegetables and less___51____, there will be more food available for everyone. Land that is used to grow crops __52_____five times more people than land where animals are kept.
Our natural resources will _53_____longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth__54_______ .
Finally, if we educate people to think about the problems, we shall have a better and clearer ___55____in the future.
1. A£®beautiful B£®unlimited £¨ÎÞÏ޵ģ© C£®rare D£®valuable
2. A£®common B£®the same C£®changeable D£®different
3. A£®crowded B£®small C£®dirty D£®busy
4. A£®protecting B£®saving C£®polluting D£®fighting
5. A£®may not B£®will not C£®shall not D£®could not
6. A£®wonders B£®realizes C£®consider D£®discovers
7. A£®poles B£®boats C£®methods D£®ideas
8.A mountains B. the sea C. trees D. forests
9. A£®continue B£®have C£®ought D£®will go on
10. A£®grow B£®plant C£®save D£®cut down
11. A£®Thus B£®However C£®Generally speaking D£®Therefore
12. A£®still B£®even C£®also D£®certainly
13. A£®too many B£®a few C£®some D£®few
14. A£®production B£®pollution C£®population D£®revolution
15. A£®houses B£®vegetables C£®food D£®lives
16. A£®fruit B£®meat C£®fish D£®grain
17. A£®feeds B£®increases C£®supplies D£®helps
18. A£®use B£®stay C£®keep D£®last
19. A£®control B£®born C£®plan D£®reward
20. A£®nature B£®sea C£®planet D£®forest
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In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources£¨×ÊÔ´£© seemed to be 26 .
Today things are 27 , the world has become too 28 . We are using up our natural resources too quickly, and at the same time we are 29 our environment with dangerous chemicals. If we continue to do this, human life on the earth will not 30 .
Everyone 31 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 32 , more and more fish are caught. We know that if too many trees are cut down, 33 will disappear and nothing will grow on the land. Yet, we 34 to use bigger and more powerful machines to 35 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. ___36, in most countries wastes are 37 put into rivers or into the sea, and there are 38 laws to stop this. We know, too, that if the 39 of the world continues to rise at the present rate, in a few years there will not be enough food. What can we do to 40 these problems ?
If we eat more vegetables and less 41 , there will be more food available for everyone. Land that is used to grow crops 42 five times more people than land where animals are kept. Our natural resources will 43 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 44 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner 45 in the future.
1. A. beautiful B. unlimited C. rare D. valuable
2.A. common B. the same C. changeable D. different
3.A. crowded B. small C. dirty D. busy
4.A. protecting B. saving C. polluting D. fighting
5.A. breathe B. survive C. drink D. move
6.A. wonders B. realizes C. considers D. discovers
7.A. poles B. boats C. methods D. ideas
8.A. mountains B. the sea C. trees D. forests
9.A. continue B. stop C. keep D. go on
10.A. grow B. plant C. save D. cut down
11.A. Thus B. However C. But D. Therefore
12.A. still B. even C. also D. certainly
13.A. too many B. a few C. some D. few
14.A. production B. pollution C. population D. pronunciation
15.A. work B. deal C. solve D. serve
16.A. fruit B. meat C. fish D. grain
17.A. feeds B. increases C. supplies D. helps
18.A. use B. stay C. keep D. last
19.A. control B. born C. plan D. reward
20.A. nature B. sea C. planet D. forest
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In the past, man did not have to think about the protection of his environment(»·¾³). There were few people on the earth, and natural resources seemed to be ¡¡¡¡1 .
Today things are ¡¡¡¡2 . The world has become too ¡¡¡¡3 . We are using up our natural resources too quickly, and at the same time we are ¡¡¡¡4 our environment with dangerous chemicals. If we ¡¡¡¡5 to do this, human life on the earth will not survive(ÐÒ´æ).
Everyone ¡¡¡¡6 today that if too many fishes are taken from the sea, there will soon be none left. Yet with modern fishing ¡¡¡¡7 , more and more fishes are caught. We know that if too many trees are cut down, ¡¡¡¡8 will disappear and nothing will grow on the land. Yet, we ¡¡¡¡9 to use bigger and more powerful machines to ¡¡¡¡10 more and more trees. We realize that if rivers are polluted with waste products from factories, we will die. ¡¡¡¡11 , in most countries, waste products are ¡¡¡¡12 put into rivers or into the sea, and there are ¡¡¡¡13 laws to stop this.
We know, too, that if the ¡¡¡¡14 of the world continues to rise at the present rate, in a few years, there will not be enough ¡¡¡¡15 . What can we do to solve(½â¾ö) these problems?
If we eat more vegetables and less 16 , there will be more food available(¿ÉµÃµ½µÄ) for everyone. Land that is used to grow crops ¡¡¡¡17 five times more people than land where animals are kept.
Our natural resources will ¡¡¡¡18 longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth 19 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner ¡¡¡¡20 in the future.
1. A. beautiful¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. unlimited¡¡¡¡¡¡¡¡¡¡¡¡
C. rare¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. valuable
2. A. common¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. the same¡¡¡¡¡¡¡¡¡¡¡¡
C. changeable¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. different
3. A. crowded¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. small
C. dirty¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. busy
4. A. protecting¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. saving
C. polluting¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. fighting
5. A. try¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. continue¡¡¡¡¡¡¡¡¡¡¡¡
C. decide¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. have
6. A. wonders¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. realizes¡¡¡¡¡¡¡¡¡¡¡¡
C. considers¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. discovers
7. A. poles¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. boats¡¡¡¡¡¡¡¡¡¡¡¡
C. methods¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. ideas
8. A. mountains¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. the sea¡¡¡¡
C. trees¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. forests
9. A. continue¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. have¡¡¡¡¡¡¡¡¡¡¡¡
C. ought¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. act
10. A. grow¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. plant¡¡¡¡¡¡¡¡¡¡¡¡
C. save¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. cut
11. A. Thus¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. However
C. Generally speaking¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Therefore
12. A. still¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. even¡¡¡¡¡¡¡¡¡¡¡¡
C. also¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. certainly
13. A. too many¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. a few¡¡¡¡ ¡¡¡¡
C. some¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. few
14. A. production¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. pollution
C. population¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. revolution
15. A. houses¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. vegetables¡¡¡¡¡¡¡¡¡¡¡¡
C. food¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. lives
16. A. fruit¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. meat¡¡¡¡¡¡¡¡¡¡¡¡
C. fish¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. grain
17. A. feeds¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. increases¡¡¡¡¡¡¡¡¡¡¡¡
C. supplies¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. helps
18. A. use¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. stay¡¡¡¡¡¡¡¡¡¡¡¡
C. keep¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. last
19. A. control¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. born¡¡¡¡¡¡¡¡¡¡¡¡
C. plan¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. reward
20. A. nature¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.sea¡¡¡¡¡¡¡¡¡¡¡¡
C. planet¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. forest
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Today things are ¡¡¡¡2 . The world has become too ¡¡¡¡3 . We are using up our natural resources too quickly, and at the same time we are ¡¡¡¡4 our environment with dangerous chemicals. If we ¡¡¡¡5 to do this, human life on the earth will not survive(ÐÒ´æ).
Everyone ¡¡¡¡6 today that if too many fishes are taken from the sea, there will soon be none left. Yet with modern fishing ¡¡¡¡7 , more and more fishes are caught. We know that if too many trees are cut down, ¡¡¡¡8 will disappear and nothing will grow on the land. Yet, we ¡¡¡¡9 to use bigger and more powerful machines to ¡¡¡¡10 more and more trees. We realize that if rivers are polluted with waste products from factories, we will die. ¡¡¡¡11 , in most countries, waste products are ¡¡¡¡12 put into rivers or into the sea, and there are ¡¡¡¡13 laws to stop this.
We know, too, that if the ¡¡¡¡14 of the world continues to rise at the present rate, in a few years, there will not be enough ¡¡¡¡15 . What can we do to solve(½â¾ö) these problems?
If we eat more vegetables and less 16 , there will be more food available(¿ÉµÃµ½µÄ) for everyone. Land that is used to grow crops ¡¡¡¡17 five times more people than land where animals are kept.
Our natural resources will ¡¡¡¡18 longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth 19 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner ¡¡¡¡20 in the future.
1. A. beautiful¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. unlimited¡¡¡¡¡¡¡¡¡¡¡¡
C. rare¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. valuable
2. A. common¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. the same¡¡¡¡¡¡¡¡¡¡¡¡
C. changeable¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. different
3. A. crowded¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. small
C. dirty¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. busy
4. A. protecting¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. saving
C. polluting¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. fighting
5. A. try¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. continue¡¡¡¡¡¡¡¡¡¡¡¡
C. decide¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. have
6. A. wonders¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. realizes¡¡¡¡¡¡¡¡¡¡¡¡
C. considers¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. discovers
7. A. poles¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. boats¡¡¡¡¡¡¡¡¡¡¡¡
C. methods¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. ideas
8. A. mountains¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. the sea¡¡¡¡
C. trees¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. forests
9. A. continue¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. have¡¡¡¡¡¡¡¡¡¡¡¡
C. ought¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. act
10. A. grow¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. plant¡¡¡¡¡¡¡¡¡¡¡¡
C. save¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. cut
11. A. Thus¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. However
C. Generally speaking¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Therefore
12. A. still¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. even¡¡¡¡¡¡¡¡¡¡¡¡
C. also¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. certainly
13. A. too many¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. a few¡¡¡¡ ¡¡¡¡
C. some¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. few
14. A. production¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. pollution
C. population¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. revolution
15. A. houses¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. vegetables¡¡¡¡¡¡¡¡¡¡¡¡
C. food¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. lives
16. A. fruit¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. meat¡¡¡¡¡¡¡¡¡¡¡¡
C. fish¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. grain
17. A. feeds¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. increases¡¡¡¡¡¡¡¡¡¡¡¡
C. supplies¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. helps
18. A. use¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. stay¡¡¡¡¡¡¡¡¡¡¡¡
C. keep¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. last
19. A. control¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. born¡¡¡¡¡¡¡¡¡¡¡¡
C. plan¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. reward
20. A. nature¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.sea¡¡¡¡¡¡¡¡¡¡¡¡
C. planet¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. forest
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In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed 36 .
Today things are 37 . The world has become too 38 . We are using up our natural resources too quickly, and the same time we are 39 our environment with dangerous chemicals. If we 40 to do this, human life on the earth will not survive.
Everyone 41 today that if too many fish are taken from the sea, there will soon be no fish left. Yes, with modern fishing 42 , more and more fish are caught. We know that if too many trees are cut down, 43 will disappear and nothing will grow on the land. But we continue to use 44 and more powerful machines to 45 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 46 , in most countries waste products are 47 put into rivers or into the sea, and there are 48 laws to stop this.
We know, too, that if the 49 of the world continues to rise at the present rate, in a few years, there will not be enough 50 . What can we do to solve these problems?
If we eat more vegetables and less 51 , there will be more food available for everyone. Land where we grow crops 52 five times more people than land where animals are kept.
Our natural resources will 53 longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth 54 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner 55 in the future.
36. A. beautiful B. unlimited C. little D. valuable
37. A. common B. the same C. changeable D. different
38. A. crowded B. small C. dirty D. busy
39. A. protecting B. saving C. polluting D. fighting
40. A. try B. continue C. decide D. have
41. A. wonders B. realizes C. considers D. discovers
42. A. poles B. thoughts C. methods D. ideas
43. A. mountains B. the sea C. trees D. forests
44. A. bigger B. less C. smaller D. higher
45. A. grow up B. plant C. save D. cut down
46. A. Thus B. However C. Generally speaking D. Therefore
47. A. still B. even C. also D. certainly
48. A. many B. enough C. some D. few
49. A. production B. pollution C. population D. revolution
50. A. houses B. vegetables C. food D. lives
51. A. feeds B. meat C. fish D. grain
52. A. feeds B. increases C. supplies D. helps
53. A. use B. stay C. keep D. last
54. A. control B. born C. plan D. reward
55. A. nature B. sea C. planet D. Forest
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