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Unit 7

1. Vocabulary

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Exercises

<b>Practice 1: Match the word in column A to the explanation in column B</b>
<b> A B</b>

1. Enormous A. Improvement

2. Effective B. Finally

3. Ultimately . C. Very big

4. Install D. Having the result that one wants

5. Heat E. A new idea or method

6. Energy F. Put something into position and

make it work

7. Advance G. Power

8. Innovation H. Relate to the sun

9. Crack

<b>Practice 2: Multiple choice</b>

1. We prefer energy-saving household …………. to nice-model ones
A. appliances B. labels C. machine D. device

2. My neighbor asked me to come over and replace their……… faucet in the kitchen
A. driping B. dripped C. dripping D. drip

3. You must make sure there are no ………. in the pipes

A. holes B. heat C. water D. cracks
4. Energy from the sun, the wind, and the water are……….
A. Planet energy B. the world power

C. natural resources D. nature sources

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A. Money-saved B. energy-saving C. saving-energy D. money-saving

6. “When is the………. comping to repair the burst pipes, Tom?” _ “Today, mom”
A. mechanic B. technician C. plumber D. heating

7. How do you manage to work in this…….. without air conditioning
A. hot B. heated C. heat D. heating

8. They…… panels on the roof of the house to catch the energy from the sun last week
A. have installed B. will install C. are going install D. installed

9. I think we should turn off the faucet. _ ………….

A. I’m sure B. No, thanks C. Not at all D. That’s a great idea
10. The water bill is 3.000.000 dong. It’s very ………..

A. Enormous B. Expensive C. Cheap D. Wasteful

<b>Practice 3: Using the word in the box to fill in the passage</b>

Are you (1)…….. for a cheap, clean effective source of power that doesn’t cause pollution or
waste natural resources? Look no further than (2)……….. from our sun. At present, most of our
electricity comes from the use of coal, and gas, oil or (3)……….. This power could be provide
by the sun. One percent of the solar energy that (4)……… the Earth is enough to provide power
for the total populations.

Many countries are already using solar energy. Solar (5)………. are placed on the roof of a
house and the sun’s energy is used to (6)……….. water. The energy can be stored for a number
of days, so on (7)……….. days you can use solar energy too.

Sweden has an (8)……….. solar energy program. There, all building will be heated by solar
energy and cars will use solar power instead of gas.

<b>Practice 4: Choose the word or phrase (A,B,C,D) that best fits the blank space in the </b>
<b>passage</b>

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Solar has been used for generating electricity since 1954. Solar panels are (1)______ on the roof
of houses to turn the energy of the sun into the (2)____ that people can use heating, cooking,
lighting and many other purpose. In other to get solar energy what we need are solar panels and
the sun. One of the advantages of solar energy is that solar panels are totally silent and
non-polluting. (3)______, solar energy also has some disadvantage. We can only generate solar
energy during daytime because the system depends (4)______ sunlight

The main disadvantage of solar energy is that solar panels are (5)_______. Scientists are doing
their best to reduce the cost of solar panels so that more and more people can use this (6)_____
friendly source of energy

1. A. prohibited B. conserved C. preserved D. installed
2. A. electricity B. power C. faucet D. energy
3. A. Because B. But C. However D. Although
4. A. with B. on C. about D. off
5. A. reduced B. cheap C. recycled D. expensive
6. A. disappointingly B. harmfully C. environmentally D. kindly

<b>Practice 5: Rearrange these words to make complete sentences</b>

1. to save money, /the amount of water/ if you want/ you should/ your family uses. /reduce


2. the earth’s resources. /Solar energy/ people conserve/ can help


3. to fix her pipes/ many crack in them. /Emily got/ because there were/ a plumber


4. instead of/ We can save/ gas and oil. /natural resources/ by using solar energy


5. wind energy. /from nature is/ energy that coms/ Another kind of


Test 15’
Name:

Class: TEST 15’ (unit 7)

I. Choose the best answer to complete each of the following sentence:
1. They suggest that we ……….. throw trash in public places.

A. don’t have to B. shouldn’t C. not to D. won’t

2. John didn’t come to the meeting yesterday, ………. We went without him.

A. consequently B. so C. therefore D. All are correct

3. Using public transports is an effective way to ………. traffic jam and pollution.

A. reduce B. increase C. continue D. gain

4. A clean, safe from of energy which comes from the sun is ……….

A. solar energy B. fossil energy C. lunar energy D. wind energy
5. A: I suggest fixing the dripping faucets. – B: ………..

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6. Television, dishwashers and refrigerators are electrical ………

A. appliances B. things C. households D. tools

7. The energy-saving bulbs use a quarter of the electricity of standard bulbs and ………..
eight times longer.

A. use B. save C. last D. waste

8. Solar ……… are placed on the roof of a house to get energy.

A. boards B. bars C. panels D. sheets

9. We’re very ……….. about spending a lot of money on energy in our homes.

A. disappointed B. worried C. pleased D. hopeless

10. He is interested in ……… natural resources but he doesn’t know how to do.
A. conserve B. conserving C. conservation D. conservationist
11. Don’t waste water or you’ll get an enormous ……….. by the end of the month.

A. letter B. receipt C. bill D. paper

12. Solar energy doesn’t ………. Pollution or waste natural resources.

A. cause B. make C. stop D. reduce

13. Lighting ………. For 20 percent of our electricity bill.

A. accounts B. wastes C. makes D. uses

14. He has a good vocabulary. ………, he pronounces well.

A. Therefore B. Besides C. However D. So

15. He is sick, ……….. he can’t come.

A. therefore B. because C. however D. so

II. Rewrite the following sentences without changing their meanings.
1. Why don’t we collect plastic bags?

 I suggest

………
2. “Let’s keep sheets with single printed page for drafting.”

 He suggested that

……….
3. She was very tired, so she went to bed.

 She went

……….
4. If we use solar energy, we can save natural resources.

 By

………
…….

5. To use solar energy for a number of days is possible.

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