UNIT 3: PROTECTING THE ENVIRONMENT

I. Choose the words whose underlined part is pronounced differently from that of the others in each group.
1. A. damage B. land C. happen D. harm
2. A. protect B. conditioner C. improve D. pollute
3. A. save B. sure C. soil D. send
4. A. pollution B. environment C. dirty D. tourism
5. A. health B. clean C. beach D. disease
6. A. about B. tourism C. proud D. loud
7. A. machines B. sends C. affects D. dries
8. A. recycles B. provides C. saves D. wastes
9. A. reduced B. collected C. needed D. avoided
10. A. planned B. repaired C. created D. explained

II. Choose the word whose main stressed syllable is placed differently from that of the other in each group.
11. A. wildlife B. protect C. reduce D. provide
12. A. reuse B. damage C. pollute D. affect
13. A. poison B. issue C. disease D. illness
14. A. recycle B. pollution C. encourage D. tourism
15. A. introduction B. environment C. conditioner D. electrical

III. Choose the best answer to complete each sentence.

16. If we keep polluting the water, there will be more diseases________ people and animals.
A. in B. on C. for D. from
17. Unless we stop burning trash,________ air will be polluted.
A. a B. the C. Ꝋ D. an
18. People need to reduce pollution________ it is damaging the environment, causing health problems
and affecting wildlife.
A. so B. and C. because D. though
19. Our class________ how to recycle plastic next lesson.
A. will learn B. have learnt C. learnt D. leanrn
20. We________ up all the streets in our village last weekend. It is now more beautiful.
A. clean B. cleaned C. has cleaned D. is cleaned
21. Government should have cheap public transportation so that we can________ air pollution.
A. reducing B. to reduce C. reduce D. reduced
22. The park in our neighborhood is clean and green, we enjoy________ out there every day.
A. hang B. to hang C. to hanging D. hanging
23. Fruit and vegetables can even be________ to eat if they grow on polluted land.
A. dangerous B. undangerous C. dangerously D. danger
24. Air pollution causes health issues, such as coughing, breathing problems, heart and lung________.
A. sicknesses B. diseases C. illnesses D. tiredness
25. Environment________ an important role in healthy living and existence of life on planet earth.
A. takes B. does C. plays D. makes
IV. Supply the correct forms of the given words to complete the sentences.
26. We should turn off lights and air-conditioner before going out the room to save the___________.
(electric)
27. People have to face a lot of__________ problems in modern life now. (environment)
28. Burning coal to produce electricity makes the air become___________. (pollution)
29. People are worried about the effects of_________ on the environment. (tourist)
30. Which kind of pollution will cause the most problems to wildlife___________? (serious)

V. Choose the word which best fits each gap.

There are many sources of pollution in our modern world. At present, the most severe sources
are acid rain, car exhaust fumes and oil spills. Factory chimneys give (31)________ smoke that
contains sulfur dioxide and nitrogen oxide. These gases combine with the moisture in the atmosphere
to (32)________ sulfuric acid and nitric acid. When it rains, these acids dissolve in the rain and turn it
acidic. Acid rain is thought to be the worst pollution problem of all. It has (33)________ aquatic life
by turning many lake into lifeless bodies of water. In these areas, there is no limestone in the rocks to
neutralize the acid rain naturally. One remedy is to pump limestone into the acidic lakes.
(34)________, it is not possible to do this on a large enough scale to save all the lakes. Car exhaust
fumes contain carbon monoxide and lead which are highly poisonous. In big cities, the exhaust fumes
build (35)________ and pose a health hazard to human beings. Pollution of the sea by oil threatens
marine life. Much of the oil comes from ships that clean their fuel tanks while at sea. Offshore oil
wells also discharge vast amounts of oil into the sea. Pollution of the sea can also be caused by oil
spills. An oil spill may occur as a result of accidents involving oil tankers.
31. A. from B. away C. over D. out
32. A. forms B. form C. formed D. forming
33. A. destroyed B. destroying C. harming D. harmed
34. A. However B. Moreover C. So D. Because
35. A. on B. in C. up D. over

VI. Read the following passage and choose the item (A, B, C or D) that best answers each of the
questions about it.
HOW TO USE BICYCLE
® Don’t ride a bicycle which is not the right size for you.
® Check a bicycle before using it and make sure that the brakes and steering-wheel work properly and
the tyres have enough air in them.
® When riding a bicycle, always use a cycling track at the side of the road when there is one.
® Don’t ride too fast, especially when going down hills and turning corner.
® Control the speed of your bicycle with your brakes, but always use them gently.
® When in a group, always ride in single file.
® Always keep to the side of the road, do not ride in the middle of the road or weave back and forth on
the road.
36. You should ride a bicycle which is .
A. higher than you are B. with high seat
C. your right size D. your favorite
37. Which part of a bicycle is used for changing direction?
A. The front wheel B. The tyres
C. The back wheel D. The steering wheel
38. When is the most dangerous to ride fast?
A. When riding along the roads B. When going down hills
C. When turning corner D. B and C are right
39. Which part of a bicycle do you use to control the speed?
A. The brake B. The chains
C. The lights D. None of the above
40. When you are in a hurry you can .
A. ride in the middle of the road B. weave back and forth
C. ride dangerously D. ride in a cycling track quickly

VII. Rewrite the following sentences without changing the meaning.

41. The weather was so hot, so we all felt tired yesterday. (because)
→ We all_______________________________________________________________________
42. To have a healthy lifestyle, we should exercise a lot. (that)
→ We should___________________________________________________________________
43. Exercise regularly and you will be fit and healthy. (if)
→ You will_____________________________________________________________________
44. Recycling is necessary to save our environment now.
→ It is_________________________________________________________________________
45. Transportation and machines cause the most noise pollution.
→ The most____________________________________________________________________

VIII. Sentence building.

46. We/ should/ use/public transportation, and/ shouldn’t/ waste/ energy.
_______________________________________________________________________________
47. If/ we/ keep/ use/ cars/ motorbikes,/there/be/ too/ much/ air/ pollution.
_______________________________________________________________________________
48. People/ try/ reduce light/ noise pollution/ moment.
_______________________________________________________________________________
49. Don’t/ waste/ energy/ because/ it/ bad/ the/ environment.
_______________________________________________________________________________
50. We/ should/ tell/ people/ how/ important/ it/ put/ trash/ correct/ place.
_______________________________________________________________________________

_____The end_____