Choose the word or phrase among A, B, C or D which best fits each gap of the passage.

We need energy to live and work. Our major source of…(36)……….is oil. Oil is one kind of fossil fuel. The amount of fossil fuel in the world is……(37)….Therefore, we must save it, and the same time, we must find new sources of energy. Geothermal heat and nuclear power are……(38)….sources of energy. They can give us electricity. Other alternative sources are the sun, waves and water. The sources are not only …(39)……and available but also clean and safe for the…(40)…People should develop and use them more and more in the future.

Question 39:

A. unlimited

B. harmful

C. polluted

D. dangerous

Choose the word or phrase among A, B, C or D which best fits each gap of the passage.

We need energy to live and work. Our major source of…(36)……….is oil. Oil is one kind of fossil fuel. The amount of fossil fuel in the world is……(37)….Therefore, we must save it, and the same time, we must find new sources of energy. Geothermal heat and nuclear power are……(38)….sources of energy. They can give us electricity. Other alternative sources are the sun, waves and water. The sources are not only …(39)……and available but also clean and safe for the…(40)…People should develop and use them more and more in the future.

Question 36:

A. energy

B. energetic

C. energize

D. energetically

Choose the word or phrase among A, B, C or D which best fits each gap of the passage.

We need energy to live and work. Our major source of…(36)……….is oil. Oil is one kind of fossil fuel. The amount of fossil fuel in the world is……(37)….Therefore, we must save it, and the same time, we must find new sources of energy. Geothermal heat and nuclear power are……(38)….sources of energy. They can give us electricity. Other alternative sources are the sun, waves and water. The sources are not only …(39)……and available but also clean and safe for the…(40)…People should develop and use them more and more in the future.

Question 40:

A. ecologists

B. invention

C. environment

D. atmosphere

Choose the word or phrase among A, B, C or D which best fits each gap of the passage.

We need energy to live and work. Our major source of…(36)……….is oil. Oil is one kind of fossil fuel. The amount of fossil fuel in the world is……(37)….Therefore, we must save it, and the same time, we must find new sources of energy. Geothermal heat and nuclear power are……(38)….sources of energy. They can give us electricity. Other alternative sources are the sun, waves and water. The sources are not only …(39)……and available but also clean and safe for the…(40)…People should develop and use them more and more in the future.

Question 37:

A. limit

B. limitation

C. unlimited

D. limited

I. Give the correct from of the word given to complete the sentence.

-Tidal energy is renewable ............ and clean (plenty) -Wind will be used as an ............... friendly sources of energy . (environment) -There are many ways will be used to solve the problem of .......... (pollute) -.............. , fossil fuels are harmful to the environment (fortunate) -We should use them .............. and try to find out alternative sources of power . (economy) -I think that solar energy can be an ............. source of energy in the near future (alter) -It's a clean source of energy . Sailboats couldn't move without this ............. (powerful) -Limit car trips by relying on biking , walking public ............. (transport) -Energy is used to ............ a lot electrical thing (product ) -I don't think so . The solar penels are becoming ............ and easy to install (cheap)

I. Give the correct from of the word given to complete the sentence.

-Tidal energy is renewable ............ and clean (plenty) -Wind will be used as an ............... friendly sources of energy . (environment) -There are many ways will be used to solve the problem of .......... (pollute) -.............. , fossil fuels are harmful to the environment (fortunate) -We should use them .............. and try to find out alternative sources of power . (economy) -I think that solar energy can be an ............. source of energy in the near future (alter) -It's a clean source of energy . Sailboats couldn't move without this ............. (powerful) -Limit car trips by relying on biking , walking public ............. (transport) -Energy is used to ............ a lot electrical thing (product ) -I don't think so . The solar penels are becoming ............ and easy to install (cheap)

ACROSS

1. We are doing a…...on sources of energy now.

2. Alternative....of energy will be developed quickly.

3. What should the government do to ....................the use petrol?

4. Wind……will offer a great deal of energy in the future.

DOWN

1. My friends and I ride bicycles to school to reduce air……….

5. They put low…..light bulbs in the classroom.

6. My father prefers using……………………transport to protect the enviroment

7. When a source is used, it usually takes time to…………it

I. Give the correct from of the word given to complete the sentence.

-Tidal energy is renewable ............ and clean (plenty) -Wind will be used as an ............... friendly sources of energy . (environment) -There are many ways will be used to solve the problem of .......... (pollute) -.............. , fossil fuels are harmful to the environment (fortunate) -We should use them .............. and try to find out alternative sources of power . (economy) -I think that solar energy can be an ............. source of energy in the near future (alter) -It's a clean source of energy . Sailboats couldn't move without this ............. (powerful) -Limit car trips by relying on biking , walking public ............. (transport) -Energy is used to ............ a lot electrical thing (product ) -I don't think so . The solar penels are becoming ............ and easy to install (cheap)

Help!!!