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B. eficient

Trả lời: B

                 ĐÁP ÁN : B
CHÚC BN HOK TỐT NHÉ NHỚ K CHO MIK NHÉ!

1. A

2. D

Read the text then answer the questions below: (2p)

Most of our electricity comes from the use of coal, oil, water power and nuclear power. We are looking for a cheap and clean source of power. Solar energy can be cheap and clean because it is available and it doesn’t cause pollution. One percent of the solar power that reaches the earth is enough to provide power for the total population. It is possible to store energy for a number of days, so solar energy can be used on cloudy days. Many countries in the world are beginning to use solar energy. By this way, we can save natural resources.

Answer the questions:

1. Where does most of our electricity come from?

Most of our electricity comes from the use of coal, oil, water power and nuclear power.

2. Why do we think solar energy is clean?

because it is available and it doesn’t cause pollution.

3. Why is it possible to use solar energy on cloudy days?

 It is possible to store energy for a number of days, so solar energy can be used on cloudy days.

4. According to the passage, how can we save natural resources?

Many countries in the world are beginning to use solar energy. By this way, we can save natural resources.

We are looking for cheap, clean, and effective sources of energy. These types of energy won’t cause pollution or waste natural resources. It will be provided freely by the sun. One percent of the solar energy that reaches the earth will be enough to provide electricity for the whole population of the world. Solar energy will be used by many countries around the world. Solar panels will be placed on the roofs of houses and other buildings and the sun’s energy will be used to heat water. The energy will be stored for a long time. We hope that by using solar energy the problem of the energy shortage will be solved.

1. What types of energy are we looking for?

 _We are looking for cheap, clean, and effective sources of energy

2. What will we use the sun’s energy for?

 _____ The sun’s energy will be used to heat water

3. How long will the energy be stored?

 __________The energy will be stored for a long time

1. polluted

2.sunny

3. effective

\(polluted\)

\(solar\)

\(effective\)

1. A -> whom

2. B -> looking

Are you looking for a cheap, clean, effective source of power that doesn’t cause pollution or waste natural resources? Look no further than solar energy from our sun. At present, most of our electricity comes from the use of coal and gas, oil or nuclear power. This power could be provided by the sun. One percent of the solar energy that reaches the earth is enough to provide power for the total population. Many countries have already used solar energy. Solar panels are placed on the roofs of our house and the Sun’s energy is used to heat water. The energy can be stored for a number of days, so on cloudy days you can use solar energy, too. Sweden has an advanced solar energy program. There, all buildings will be heated by solar energy and cars will use solar energy instead of gas by the year 2015

19.Does solar energy cause pollution?

a.     Yes, it does.

b.    No, it doesn’t.

c.     No. Solar energy causes pollution

d.    Yes. Solar energy causes pollution

20.How much solar energy is enough for the world’s population?

a)    Two percent of the solar energy.

b)    One- third of the solar energy.

c)    One– fifth  of the solar energy.

d)    One percent of the solar energy.

21.Where are solar panels installed?

a)    They are placed in the garden of the house.

b)    They are placed on the branches of the tall trees behind the house

c)    They are placed on the floor of the house

d)    They are placed on the roofs of the house

22.How can we use solar energy on cloudy days?

a)    The energy can’t be stored for a number of days

b)    The energy can be stored for a number of days

c)    Solar energy can only use on the sunny days.

d)    The Sun’s energy is used to heat water.

23.When will cars use solar power instead of gas in Sweden ?

a)    by the year 2050

b)    by the year 2055

c)    by the year 2015

d)    by the year 2035