Unit 7 (Test 2)

I.Choose the word whose main stress is placed differently from the others.
1.A. limit B. pollution C. influence D. dirty
2.A. exist B. destroy C. human D. result
3.A. decrease B. urgent C. serious D. national
4.A. weather B. rapid C. action D. affect
5.A. rubbish B. become C. government D. nature
II. Choose the best answer.
1.Air ………………, together with littering, is causing many problems in our cities today.
A.pollute B. pollution C. polluting D. polluted
2.Many people in this city have received medical …………. For the disease.
A.support B. treatment C. help D. assistance
3.It won’t be possible to save the Earth if we don’t take ……….. right now.
A.action B. job C. work D. duty
4.We ……………… our environment and keep it healthy and clean.
A.should protect B. should be protected C.should protected D. should be protect
5.Doctors ………… that air pollution causes lung cancer.
A. proved B. has proved C. have been proved D. have proved
6.Mnay people are concerned ……….. the pollution ot the environment.
A. on B. to C. about D. over
7. Pollution greatly affects the life of ………….. animals.
A. wine B. wild C. whilst D. while
8. When wastes are poured into the atmosphere, the air becomes ……….
A. contaminated B. contaminating C. contaminate D. to contaminate
9. Environmental …………….. is a big problem in large cities nowadays.
A. dirty B. pollution C. research D. dust
10. If we ……………. throwing garbage into the river, it will be polluted.
A. will stop B. won’t stop C. don’t stop D. stop
11. I will never talk to you again …………. You don’t give me back my money.
A. if not B. when C. unless D. if
12. If Ha ……………. the exam, she ………….. to medical college.
A.passes/will go B. pass / would go C.passed / will go D. pass/will go
13.I’m afraid that I can’t ………. You.
A.helping B. to help C. be helped D. help
14.If people …………….. public transport, there will be less pollution.
A.use B. will use C. can use D. used
15……………… we miss the last bus, we will have to walk home.
A.As B. When C. IF D. Unless
16.Why not ………………. garbage bins around the schoolyawrd to keep it clean.
A.put B. to put C. putting D. we put
17.If the sea water continues to be polluted, many fish species …………. extinct.
A.become B. will become C. would become D. have become
18.We postponed the picnic ……………..
A.because it rained B. because of the C. because it was D. because it was
heavily heavily rain heavy raining raining heavily
19. Plants ………… if they don’t get sun and water.
A.die B. would die C. won’t die D. are going to die
20. If they ……………… to the mountains next week, they will be able to ski.
A. will go B. go C. are going D. could go
III. Complete the passage with the correct form of the words in brackets.
One of the reasons that the water …………………. (1) (pollute) problem is so severe is that it is not actually
………………..(2) (legal) to dump pollutants into water bodies. Sewage, sludge, garbage, and even toxic
……………… (3) (pollute) are all dumped into the water. Often, governments either do not care or
…………….. (4) (simple) look the other way. Across the world, about half of all sewage is dumped into water
bodies in its ……………. (5) (origin) form. No efforts are made to disinfect the sewage or to remove especially
…………….. (6) (harm) pollutants. Even if sewage is treated, problems still arise. ……………… (7) (treat)
sewage forms sludge, which is sent out into the sea and dumped. Many cities and countries dump sewage out at
sea. Often, they place it not far from their own coastline, often killing all the sea wildlife in the dumping area. In
addition to sewage, ……………… (8) (chemistry) dumped by industries and governments are another major
source of water pollution.
Sewage (n) chất thải Sludge (n) bùn đặc, bùn quánh
Toxic (adj) độc Arise (v) xuất hiện, nảy sinh ra (arise – arose – arisen)
Disinfect (v) tẩy uế
IV. Choose the best option A, B, C or D to complete the passage.
We are all slowly ………………. (1) the earth. The seas and rivers are too dirty to swim in. There is so much
smoke in the air that it is unhealthy to live in many of the world’s cities. In one well-known city, for example,
poisonous gases …………….. (2) cars pollute the air so much that traffic policemen have to wear oxygen
masks.
We have cut down …………….. (3) trees that there are now vast areas of wasteland all over the world. As a
result, farmers in parts of Africa cannot grow enough ……………… (4). In certain countries in Asia there is too
little rice. Moreover, we do not take enough care of the countryside. Wild animals are quickly disappearing. For
instance, tigers are rare in India now because we have killed too many for them to survive. However, it isn’t
enough simply to talk about the problem. We must act now before it is too late to do ……………………. (5)
about it. Join us now. Save the Earth !
1.A. destroyed B. destroying C. destroys D. destroy
2.A. by B. from C. of D. in
3.A. so much B. so few C. so little D. so many
4.A. eating B. to eat C. for eat D. to be eaten
5.A. anything B. nothing C. everything D. something
V. Choose the best option A, B, C or D to answer the questions.
One of the factors in global warming is carbon monoxide. The more carbon monoxide in the atmosphere, the
less the atmosphere is able to clean itself. The result is a warming of the atmosphere, the so-called global
warming, and possibly ozone damage.

Earlier, it was found that carbon monoxide was concentrated in the Southern Hemisphere, and could be
attributed to deforestation. Huge areas of forest and grasslands in South America and Africa have been burned,
putting carbon monoxide into the atmosphere. Recently, however, 10 the Southern Hemisphere has been found
to be clean, while the Northern Hemisphere is more polluted than expected.

The latest research was done during the northern winter. The high levels in the Northern Hemisphere could be
because of this. In winter 15 carbon monoxide is destroyed more slowly. There are also more fires burned in
winter, and possibly industrial processes work harder. It could also reflect the ever-increasing number of cars on
the roads. Optimists hope that the reason why the North has overtaken the South as the major area of carbon
monoxide is that at last the burning 20 has stopped, or at least slowed down.
Attribute (v) cho là do, quy cho The Nothern Hemisphere: bán cầu bắc
Reflect (v) phản ánh, phản chiếu Absorb (v) hút, hút thu, hấp thu, lôi cuốn Neutral (adj) trung lập
Favor (n)ân huệ, đặc ân, sự thiên vị biase (v) làm cho có thành kiến

1. Which of the following is the best title for the passage?

A.Global warming B.Carbon monoxide in the atmosphere
C.The warming of the atmosphere D. Ozone damge
2. Which of the following is NOT a reason for carbon dioxide?
A.Ozone damage B.Buring of forest C. Traffic D. Industry
3. According to the author which of the following is a reason why in winter there is more carbon-
monoxide in the atmosphere?
A. Fewer factories are working
B. There is a decrease in the amount of traffic on the roads.
C. Central heating means there are fewer fires nowadays.
D.Carbon monoxide is not absorbed so fast.
4. Why are the optimists happy?
(A) People are buying more cars.
(B) There is more carbon dioxide in the North.
(C) They are possibly burning fewer forests in the Southern Hemisphere.
(D) Industry must be doing better.
5. What is the attidude of the author towards the new findings?
(A) He is biased in favor of the South.
(B) He is neutral.
(C) He agrees with the optimists.
(D) He is worried about the North.
VI. Complete the second sentence so that it has a similar meaning to the first.
1.Climbing without a safety rope is forbidden.
You aren’t ………………………………………………………………………………………..
2. Nigel hasn’t got satellite TV, so he can’t watch the game.
If …………………………………………………………………………………………………..
3.Waking home alone is not a good idea.
You …………………………………………………………………………………………………..
4. Throw a stone into water and it sinks.
If ……………………………………………………………………………………………………
5.You can’t travel on this train if you don’t have a reservation.
Unless ……………………………………………………………………………………………
6.”If I were you, I’d take the job”, said Sue.
Sue …………………………………………………………………………………………………
7. The exam question was so easy that we all got it right.
It was ………………………………………………………………………………………………
8. Although he wasn’t experienced, he got the job.
Despite …………………………………………………………………………………………….
II. Rewrite the following sentences:
1. She was ill, so she didn’t go to school.
She didn’t ……………………………………………………………………. (because)
She …………………………………………………………………………….. (because of)
2. The water is polluted, so the plants are dead.
The …………………………………………………………………………….. (lead to)
The ……………………………………………………………………………… (result in)
The ………………………………………………………………………………. (cause)
3. The water pollution leads to the death of fish.
The water ………………………………………………………………………… (make)
4.She was lazy, so she didn’t pass the exam.
If …………………………………………………………………………………………
5. Go to school on time, or you will be punished by the teacher.
If ………………………………………………………………………………………….
6. They will clean their house tomorrow.
Their ………………………………………………………………………………………
7. The movie is very interesting. I have seen it twice. (so)
The movie is very ………………………………………………………………………..
8. Did you finish the work yesterday?
Was ………………………………………………………………………………………
9. He didn’t go camping because the weather was cold.
………………………………………………………………………………… (because of)
10. Mai can’t buy a new pen because she doesn’t have enough money.
If ………………………………………………………………………………………….
11. Play sports regularly and you will be healthy.
If ………………………………………………………………………………………….
12. Chung doesn’t go out with his friends because he doesn’t have time.
If …………………………………………………………………………………………..
13. I advised you to love her.
If I ………………………………………………………………………………………….
14. She didn’t go to the university because of her poverty.
She didn’t ………………………………………………………………………….. (because)
15. Lan is ill, so she doesn’t go to the meeting.
If ……………………………………………………………………………………………
16. Chung has done the housework for two hours.
The …………………………………………………………………………………………
17. Minh is reading a book now.
A book ……………………………………………………………………………………..
18. Tuan should do morning exercises every day.
Morning …………………………………………………………………………………….
19. The air is polluted, so we are sick.
The polluted ………………………………………………………………………… (result)
The polluted ………………………………………………………………………… (lead)
We …………………………………………………………………………….. (because)
We ………………………………………………………………………… (because of)
20. The water is polluted. Many aquatic plants die.
The ……………………………………………………………………………….. (lead)
The …………………………………………………………………………….. (result)
21. Noise pollution happens. There is a change in animals’ living pattern. (causes)
……………………………………………………………………………………………………….
22. Radioactive pollution is very dangerous. It can cause abnormal growth. (since)
……………………………………………………………………………………………………….
23. The area is uninhabitable. The Chernobyl nuclear accident happened. (made)
………………………………………………………………………………………………………..
24. Fossil fuels such as coal or oil are burned. Acid gases are produced. (so)
……………………………………………………………………………………………………….
25. Acid rain is dangerous. Trees’ leaves are damaged. (because of)
……………………………………………………………………………………………………….
26. Leaves are damaged. The tree cannot get enough food energy to stay healthy. (because).
………………………………………………………………………………………………………..