Choose the word that has the main stress placed differently from the others.
31. a. energy b. exhausted c. natural d. plentiful
32. a. electricity b. geothermal c. alternative d. radiation
33. a. available b. potential c. unlimited d. infinite
34. a. release b. supplies c. nuclear d. convenient
35. a. ecologist b. fertilizer c. dangerous d. scientist
 MISTAKE IDENTIFICATION
Choose word or phrase - a, b, c or d – that needs correcting.
36. Louisa May Alcott, she best known for her books for children, served
A B C
as a nurse during the Civil War.
D
37. I went to a reunion for students educating in the physics department
A B C
during the 1980s.
D
38. Natural resources provide the raw material are needed to produce.
A B C
finished goods.
D
39. In an essay writing in 1779, Judith Sargeant Murray promoted
A B
the cause of women's education.
C D
40. It was suggested that Pedro studies the material more thoroughly
A B
before attempting to pass the exam.
C D
 READING
Read the passage and answer the questions:
Almost all of our energy comes from oil, coal and natural gas. We call them fossil fuels.

The earth’s fossil fuels are running out. What will happen when there is no oil, coal and gas on
the earth?
Scientists are trying to find and use other alternative sources of energy. we can use
energy from the sun, the wind and the water.
Solar energy is unlimited. The sun supplies all the energy used to grow plants, to evaporate
water for rain, and to maintain the temperature of the planet. All are necessary for human life.
If we are able to collect solar energy, we will be sure to have this abundant source of power.

Answer the questions:
1. What are other words for fossil fuels?
__________________________________________
2. What are natural sources of energy?
___________________________________________
3. From which do plants on the earth get energy?
______________________________________________
UNIT 11: ( E11) SOURCES OF ENERGY
I. Vocabulary:
Give the Vietnamese equivalents to the following words or phrases:
1. alternative ______________________________
2. exhausted ________________________________
3. geothermal heat __________________________
4. solar panel ______________________
5. release ______________________
6. fossil fuels _______________________
II. Grammar:
Relative clauses replaced by participles and to- infinitives
1. Using to-infinitive:
S + V + Noun + Relative clause
 S + V + Noun + to- infinitive( phrase )
Ex: We have a lot of work which we have to do today.

We have a lot of work to do today.
2. Using participles:
A. Using present participle:
Ex: Do you know the girl who is talking to Tom?
Do you know the girl talking to Tom?
B. Using past participle:
Ex: The man who was injured in the accident was taken to hospital.
The man injured in the accident was taken to hospital.
 EXERCISES :
Replace the relative clauses by an infinitive phrase or participles:
1. He was the first man who left the burning building.
__________________________________________________
2. The girl who is playing the guitar is Daisy.
___________________________________________________
3. We live in a house that was built in 1975.
____________________________________________________
4.The last person that we have to meet is Mr. Brown.
___________________________________________________
5. They need a garden which they can play in.
_____________________________________________________
6. We had a river in which we could swim.
_______________________________________________________
7. Neil Armstrong was the first man who walked on the moon.
______________________________________________________
8. The fifth man who was interviewed was entirely unsuitable.
____________________________________________________
9. I have some homework that I must do tonight.
___________________________________________________
10. Have you brought a book that Kevin can read?
_____________________________________________________

11. She is the only woman who was appointed to the board.
______________________________________________________
12. The floor is dusty but I haven’t got a brush that I can sweep it with.
_________________________________________________________
13. The people who are waiting for the bus in the rain are getting wet.
_________________________________________________________
14. I come from a city that is located in the southern part of the country.
________________________________________________________
15. The children who attend that school receive a good education.
_______________________________________________________
 PRE - TEST:
 GRAMMAR & VOCABULARY
Choose the best answer.
1. The amount of solar energy that reaches the earth depends ______ the atmosphere.
a. to b. in c. on d. with
2. The natural environment consists ________ all natural resources.
a. in b. of c. to d. on
3. If the weather ……… fine , we will go on a picnic.
a. is b. were c. would be d. will be
4. Solar energy can be changed _________ electricity.
a. in b. to c. into d. for
5. If he …… harder, the results will be better.
a. worked b. works c. has worked d. will work
6. We haven’t seen each other ……… we left school.
a. since b. for c. before d. after
7. Oil, coal and natural gas are ______ fuels made from decayed material from animal or plants.
a. unleaded b. smokeless c. solid d. fossil
8. We could make better _________ of our energy resources.
a. spend b. use c. need d. limit
9. All fossil fuels are _________ resources that cannot be replaced after use.

a. unlimited b. renewable c. available d. non-renewable
10. My mother is busy …… the cooking now.
a. do b. to do c. to have done d. doing
11. She needs … her speaking skill.
a. to improve b. improve c. improved d. improving
12. I used to …… T.V more often than I do now.
a. watching b. watch c. watched d. to watching
13. We should develop such ______ sources of energy as solar energy and nuclear energy.
a. tradition. alternative. revolutionary d. surprising
14. A huge amount of solar energy _______ the earth’s outer atmosphere.
a. reach b. reaches c. that reaches d. is reached
15. Would you like …… your holiday with my family in Brazil?
a. spend b. to spend c. spending d. spent
16. I remember ……… next door to you when we were in Australia.
a. to live b. living c. live d. have lived
17. He has ________ extensive research into renewable energy sources.
a. carried out b. turned on c. taken over d. cared for
18. ……… blind can see nothing.
a. The b. A c. All d. Every
19. It’s ages ……. I last ate Italian food.
a. for b. when c. while d. since
20. I’ve written to Helen ……
a. last week b. yet c. recently d. nowadays
21. I had dinner with Sue ……
a. last night b. already c. so far d. lately
22. Tom hasn’t been here …… you came here together.
a. for b. when c. since d. as
23.I enjoy to classical music.
a. listen b. listening c. to listen d. having listen
24. When I glanced out in the window , I saw Tim toward my house.

a. be walk b. being walked c. walked d. walking
25. Coal was the first fuel _______________ to power machinery.
a. is used b. using c. to use d. to be used
PHONETICS
Choose the words that has the underlined part pronounced differently from
that of the others.
26. a. exhaust b. source c. enormous d. cause
27. a. sun b. solar c. safe d. sure
28. a. heat b. great c. release d. reach
29. a. geothermal b. power c. solar d. hydro
30. a. polluted b. consume c. nuclear d. fuel