英语短文 要求80词要求：用因果法发展80词文章There are three reasons wh

英语短文 要求80词要求：用因果法发展80词文章There are three reasons wh

There are three reasons why solar energy has not been made use of widely.One is its high cost,if people wants to use the solar energy,it must cost him a lot to do so.It costs much higher than the water energy and mineral energy.Second reason is about the weather,it is impossible that everyday is sunny day on the earth.So if there is not enough sun in the sky,the solar energy will not be used so much.The last reason is about the techinical person,because there are still few person who are very professional on developing solar energy used.Not only it need a lot of money to develop this techinic,but also this techinic is highly complesity.However,the solar energy is still a good energy that can be used by people in the future.======以下答案可供参考======供参考答案1:There are many reasons why solar energy has been made use of widely.Foremost it is enviromentally-friend.Nowdays the world is suffering the globle warming,such as the drought in the year 2006.The solar energy is polution-free.It makes our enviroment more beautiful.Someone may say the cost is very expensive.But it is worthwhile for a clean air.

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