The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity. Converting waste products to gases or oil is also an efficient way to dispose of waste. Experimental work is being done to derive synthetic fuels from coal, oil shale and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness - power with giant windmilk . Geothermal power, heat from the earth, is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but today it supplies only four percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of the temperature differences in ocean water to produce energy.

1. Which is the best title of the passage?

A. Efficient Ways of Disposing of Waste

B. The Use of Water Productions for Energy

C. The Search for Alternative Sources of Energy

D. New Discoveries in Geothermal Power

$->$ Dịch : Cuộc tìm kiếm cho nguồn năng lượng thay thế.

$->$ Thông tin : The search for alternative sources of energy has led in various directions.

2. In the second paragraph, the phrase “synthetic fuels” could best be replaced by which of the following?

A. Biological fuels

B. Low burning fuels

C. Fast burning fuels

D. Artificial made fuels

$->$ geothermal power : năng lượng địa nhiệt = heat from the earth : nhiệt từ trái đất

3. Which of the following is NOT mentioned in the passage as an alternative source of energy?

A. Burning of garbage

B. Geothermal power

C. Synthetic fuels

D. Electricity

$->$ thông tin : Many communities are burning garbage and other biological products to produce electricity.....Some experts expect utility companies to revive hydroelectric power derived from streams and rivers

4. According to the author, the impracticability of using coal, oil shale and coal tars as sources of energy is due to ……………

A. their being time consuming

B. their being money consuming

C. the scarcity of sources

D. the lack of technology

$->$ Thông tin : Experimental work is being done to deprive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power, heat from the earth, is also being tested

5. The word “it” in the last paragraph refers to…………...

A. alternative source B. the United States C. hydroelectric power D. Electricity

$->$ Thông tin : Fifty years ago hydroelectric power provided one-third of the electricity used in the United States but today it only supplies only four percent → " it" thay cho "hydroelectric power "

Part 6. Rewrite each sentence so that the meaning stays the same.

1. People believe that 13 is an unlucky number.

→13 is …… believed to be an unlucky number.………………………………………………………………………………………….

2. “How many cars are there in front of your house, Mai?”

→ I asked …Mai how many cars there were in front of her house.…………………………………………………………………………………………

3. No one introduced me to newcomers in the festival.

→ I…wasn't introduced to newcomers at the festival.…………………………………………………………………………………………………

4. The food was too bad for the children to eat.

→ The food was so……bad that the children can't eat.………………………………………………………………………………

5. It’s no use persuading her to join in that activity.

→ There is no …point in persuading her to join in that activity.………………………………………………………………………………………

6. Skating in the winter is interesting.

→ It……is interesting to skate in the water………………………………………………………………………………………………

Part 5 :
Câu 1 : C 
Câu 2 : D 
Câu 3 : D 
Câu 4 : B 
Câu 5 : C 
Part 6 : 
1 . 13 is believed to be an unlucky number 
2. I asked Mai how many cars there were in font of her house
3. I wasn't introduced to newcomers in the festival 
4. The food was so bad that the children couldn't eat it 
5. There is no point in persuading her to join that activity 
6. It is interesting to shate in the water