True or False

----- Nội dung dịch tự động từ ảnh -----
order to
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develop alternative sources of energy, and unless we try we'll never succeed. Instead of
we can
purning fossil fuels we should be concentrating on more economical uses of electricity, because
electricity can be produced from any sources of energy. If we didn't waste so much energy, our resources
would last longer. We can save more energy by conservation than we can produce for the same money.
Unless we do research on solar energy, wind power, tidal power, hydroelectric plants... our fossil fuels
will run out and we'll all freeze or starve to death. Several countries are spending much more time and
money on research because the energy from the sun, the waves, and the winds last forever. We won't
really survive unless we start working on cleaner and safer sources of energy.
True or False
1. Fossil fuels are renewable sources of energy.
2. Electricity can be produced from the sea.ubbing
3. The energy from the sun, the waves and the winds will never be used up.
4. We really need to worry about cleaner and safer sources of energy.
Choose the best answer:
5. What is the passage mainly about?
A. We are facing huge lack of energy. B. Electricity is the main energy we use.
C. Alternative sources of energy must be developed. D. It is impossible to have safer sources of energy.
6. Which source of energy cannot last forever?
A. coal
B. wind
C. water
E/ Air pollution occurs when wastes dirty the air. People reduce most of the wastes that cause air
pollution. Such wastes can be in the form of gases or particles of solid or liquid matter. The substances
result chiefly from burning fuel to power motor vehicles and to heat buildings. Industrial processes and
the burning of garbage also contribute to air pollution. Besides, there are other polluting substances that
exist naturally in the air. They include dust, pollen, soil particle, and naturally occurring gases.
The rapid growth of population and industry and the increasing use of automobiles and airplanes have
made air pollution a serious problem. The air we breathe has become so filled with pollutants that it can
cause health problems. It also harms plants, animals, building materials and fabrics.
D. waves
True or False
1/ The wastes dirtying the air must always be in the form of solid or liquid matter.
2/ Agricultural and industrial processes also add pollution to the air.
3/ The increasing use of transportation is one of the causes of seriously polluted air.
4/ The air pollution can only do harm to people's health.
Choose the best answer:
5/ When does air pollution happen?
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A. When wastes are in the form of gases
B. When people produce wastes
C. When people reduce wastes
D. When wastes dirty the air
6/ What has made air pollution a serious problem?
A. The rapid growth of population
B. The increasing use of automobiles
C. The growth of industry
D. All are correct
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