题目内容：

    It is widely agreed that the over-use of fossil fuels, such as coal and oil has caused serious environmental problems. Scientists are trying to find new clean energies that do not pollute the air, the water or the ground. Solar power is one of them.

Solar power is a kind of electricity which is produced by taking energy from the sun, using solar panels (面板，电池板). The power is easy to get and will never be used up. Whenever it is sunny, there is the power. The power is clean and renewable. It helps to reduce waste and pollution, which is great for the environment. In the areas that are too far away to send electricity to or not easy to build electric power plants, solar power is especially necessary. It enables the people there to use lights, TVs, computers, washing machines, fridges and many other things.

Therefore, more and more countries, such as China, the USA, Japan and India, encourage scientists to develop practical technology to put solar power to use. However, the power is not as widely used as expected.

One of the challenges is that a solar power system needs sunshine. Countries or areas with a lot of rain, like the UK, are not suitable to develop such power system. Secondly, a solar power panels requires a very large site to fix enough solar panels to collect sunlight and change it into electricity. Maybe an area in the desert would be one of the perfect places for such a plant to build. What’s more, solar panels are expensive at present though the energy itself doesn’t cost anything.

Today scientists are working hard to develop more practical and cheaper solar power system. Maybe one day solar power will be one of the most important clean energies in our life.

1.Solar power is a kind of energy taken from             .

A.the air B.the sun C.the water D.the ground

2.The underline phrase “be used up ”means             .

A.短缺 B.滥用 C.用完 D.习惯

3.Why isn’t the solar power used widely?

A.Because a solar system needs sunshine. B.Because solar panels are expensive.

C.Because fixing solar panels needs very large sites. D.All over above.

4.What’s the main idea of paragraph 4?

A.The ways to use solar power

B.The advantages of solar power.

C.The places to build the solar power station.

D.The difficulties of putting solar power into use widely.

5.What can we learn from the passage?

A.Solar energy itself is expensive

B.Solar power will run out very soon.

C.Solar power is a kind of clean and useful energy.

D.Solar power is much better than the other energetic.