. 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?
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2. Why do we think solar energy is clean?
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3. Why is it possible to use solar energy on cloudy days?
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4. According to the passage, how can we save natural resources?
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