I. use the correct form of the words given to complere the sentences

1 the calories in the food we are s form of ( chemistry)............ energy

2she said that it was(polite)............of him to ask her age

3 apple Inv., has been one of the(lead)..............in the compute software field

4. he has carried out extensive research into(Renew)......... enrgy sources

5 my brother works as a lab ( technique)..................at a large company

6 a scientist who studies number, shapes, amounts, and their relationship is a (mathematics)..........

7 threr is still room for your( improve)............... in your work

I. Word form

1. Fish and many other animals are killed by (pollute) ………… in their habitat.

2. Astronomers are concerned about light pollution because they have (difficult) …… in view activities in the sky and outer space.

3. (nature) …………. habitats have been destroyed in recent years.

4. Light pollution makes us (able) …………. to see the stars in the sky.

5. The tent will be used for medical camps and temporary (accommodate) ……. After the earthquake in Nepan.

6. Apple Inc. has been one of the (lead)………. In the computer software field.

7. My brother works as a lab (technique) …………at a large company

8. He has carried out extensive research into (renew) ……. energy sources such as the water or wind energy.

II. Verb form

1. I (do) ………….. my homework while Nick (watch)……….. TV last night.

2. Unless they (pass) ……….. their examinations, they would join the army.

3. What you (do) ……. at 8 p.m yesterday?

4. If we had the key now, we (solve) …………. the problem of traffic jam.

5. Stop (argue) ……… and start (work)………..

6. Steve used (be) ………. a football player. He has to stop (play)………. because of an injury.

7. Don’t try (persuade) ……………. me. Nothing can make me (change) ……….

8. The hot weather (expect) …………. to continue while there were longer hours of sunshine.

9. The film (begin) ……….. when we (arrive) ……….. at the cinema yesterday.

10. Tomorrow the dam (close) ………. to prevent salt water from entering the fields in Tien Giang Province.

III. Rewrite the sentences:

1.The water temperature increases. Some aquatic creatures are unable to reproduce.

>> If..................................................

2. We turn on the heater all the time. We have to pay three million dong for electricity a month

>> If.................................................

3. Because it rained heavily, the road in front of my house was flooded.

>> Due to...........................................

4. Did the storm destroy the whole village? (passive)

>> Was............................................

5. Minh: “I overslept this morning”

>> Minh said......................................

6. Olive “Chau, I’m leaving Vietnam tomorrow”

>> Oliver told Chau .................................

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions

In the twentieth - century, people depend on unlimited energy to power their everyday lives. A wide range of energy-run devices and modern conveniences are taken for granted, and although it may seem that we will never be in danger of living without those conveniences, the fact is that many supplies of energy are dwindling rapidly. Scientists are constantly searching for new sources of power to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend on the success of this search.

Coal, oil, and natural gas supply modern civilization with most of its power. However, not only are supplies of these fuels limited, but they are a major source of pollution. If the energy demands of the future are to be met without seriously harming the environment, existing alternative energy sources must be improved or further explored and developed. These include nuclear, water, solar, wind, and geothermal power, as well as energy from new, nonpolluting types of fuels. Each of these alternatives, however, has advantages and disadvantages.

Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they pose the daunting problem of what to do with nuclear waste. Hydroelectric power is inexpensive and environmentally safe, but impractical for communities located far from moving water. Harnessing energy from tides and waves has similar drawbacks. Solar power holds great promise for the future but methods of collecting and concentrating sunlight are as yet inefficient, as are methods of harnessing wind power.

Every source of energy has its disadvantages. One way to minimize them is to use less energy. Conservation efforts coupled with renewable energy resources, such as a combination of solar, water, wind, and geothermal energy and alternative fuels, such as alcohol and hydrogen, will ensure supplies of clean, affordable energy for humanity's future.

The word "dwindling" in the first paragraph is closest in meaning to

A. diminishing 

B. changing 

C. increasing 

D. limiting 

Almost all our energy comes from oil, coal and natural gas. We call them fossil fuels. The earth’s
fossil fuels are running out. What would happen if there were no oil, coal and gas on 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. It 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’re able to
collect solar energy, we’ll be sure to make good use of this abundant source of power.
Another source of energy from nature is the wind. Wind power is clean and plentiful. Energy
from the wind has been used for centuries to move ships, grind grain, pump water and do other kinds
of work. In more recent time, wind power has been used to generate electricity.
Water can also provide power. For a long time, people have used water to power machines.
Some early uses of water power were to mill grain, saw wood and power machinery for the textile
industry. Today water power is mostly used to generate electricity.
11. We are asking the question “What would happen if there were no oil, coal and gas on earth?” because ___.
A. we are now depending so much on fossil fuels.
B. we are looking forward to seeing great changes.
C. we are looking for other alternative sources of energy.
D. other sources of energy can come from the sun, the wind and the water.
12. Which of the following can NOT be used as alternative sources of energy?
A. coal/gas B. the sun/the water
C. the sun/the wind D. solar energy/nuclear power
13. Centuries ago, people used wind power to ___.
A. maintain the earth’s temperature B. get water from underground
C. grow plants D. generate electricity
14. Up till now, water energy has been used for ___.
A. similar purposes C. the textile industry
B. moving ships D. different purposes

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15. The word “plentiful” in line 8 mostly means ___.
A. fresh B. natural C. available D. limited

We use many different energy sources to do work for us. Energy sources are classified into two groups - renewable and nonrenewable. Non-renewable energy sources are those that take millions of years to form and will run out some day. It is energy that comes from fossil fuels such as coal, crude oil, and natural gas. Fossil fuels are mainly made up of carbon and were formed millions of years ago. The chemical reaction which takes place when we burn fossil fuels releases carbon compounds such as carbon monoxide and carbon dioxide into the air. Carbon dioxide is one of the green house gases which is contributing to global warming and air pollution. On the other hand, renewable energy sources will never run out, are better for the environment and do not cause pollution. Renewable energy is often called green energy because it is a natural energy, always available and does not have to be formed like nonrenewable energy. The green energy is always there. For example, the Sun consistently shines, water is abundant, and the winds blow throughout the year. The five types include solar, energy from the Sun; geothermal, energy from heat within the Earth; hydroelectric, energy from moving water; biomass, energy from dead plants and microorganisms and finally, energy from the wind.