UNIT 10

Choose the best answer to complete each of the following sentences.

Question 1.

The wind, the sun, and the wave are some types of __________ sources of energy.

A. changeable

B. alternative

C. cheap

D. costly

Question 2.

Remember to __________ the lights before going to bed

A. turn

B. turn on

C. turn off

D. stop

Question 3.

People will reduce energy __________ as much as possible.

A. consume

B. consumption

C. expense

D. expenses

Question 4.

Nuclear power is expensive and dangerous __________ our environment.

A. for

B. to

C. in

D. with

Question 5.

Human is looking for a clean, cheap and __________ sources of energy.

A. effective

B. effect

C. effectively

D. effectiveness

Question 6.

Low energy light bulbs should be used to __________ electricity.

A. spend

B. buy

C. convert

D. save

Question 7.

We must __________ the amount of water our family used every day.

A. lower

B. reduce

C. lessen

D. narrow

Question 8.

At this time next month, we __________ to Ha Long Bay for a holiday.

A. will go

B. will going

C. will be gone

D. will be going

Question 9.

By the middle of the 21st century, people in developing countries __________ more

renewable energy.

A. uses

B. will be using

C. used

D. have

Question 10.

Fossil fuels are very common in our society but they __________ the environment.

A. renew

B. provide

C. waste

D. pollute

Question 11.

When you save energy, you not only save money, but you also reduce the demand for

__________ such as coal, oil, and natural gas and that is a great way to play a part in saving the

planet.

A. carbon footprint

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