1.Coal is a cheap and easy-to-use source of energy.

2.Hydropower is a clean and cheap source of energy.

3.Wind power is a clean and renewable source of energy, but it can be noisy.

4.Natural gas is a cheap but non-renewable source of energy.

5.Motorbikes are popular because they are cheap, but they contribute to pollution.

6.Microwave ovens are convenient and can save money on electricity bills.

7.Airplanes are fast and convenient, and can save money on travel expenses.

8.Cars are convenient, but they can be expensive to buy and maintain.

9.Bicycles are a clean and cheap mode of transportation that is good for health.

Giúp mình với mình gấp lắm rồi:3

Coal is cheap and eassy to use. 

=> Sai vì không lược bỏ âm /d/ trong từ "and". 

Đúng rồi bạn

1. polluted

2.sunny

3. effective

\(polluted\)

\(solar\)

\(effective\)

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.

1. For a long time / people / use / water / power machines

For a long time people have used water to power machines

2. Solar panels / place / the roof / a house / and / sun's energy / use / heat water

Solar panels are placed on the roof of a house and the sun's energy is used to heat water

3. We / use energy / the sun, the wind, and the water

We use energy from the sun, the wind, and the water

4. Many countries / already using / solar energy

Many countries have already been using solar energy

5. The earth's fossil fuels / running out

The earth's fossil fuels are running out

6. We / looking / cheap, clean, effective source / energy / not cause pollution or waste natural resource

We are looking for a cheap, clean, effective source of energy that does not cause pollution or waste natural resource

7. Recently / wind / use / generate electricity

Recently wind has used to generate electricity

8. The sun / supply / all energy / used / grow plants / evaporate water / rain / and / maintain / temperature / planet

The sun supplies all energy used to grow plants and to evaporate water for rain and to maintain tenperature of the planet

9. At present / most / our electricity / come / use / coal, gas, oil or nuclear power

At present, most of our electricity comes from the use of coal, gas, oil or nuclear power

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

Đáp án: A

Đáp án là: True.