Energy from the wind

【专家解说】：【答案】【小题1】wind
【小题2】pollution
【小题3】expensive
【小题4】Cheap
【小题5】(fine) weather
【答案解析】试题分析：这篇短文主要介绍了21世纪的新能源，风能，水能，地热能，和太阳能。
【小题1】根据短文中风能的描述But, if there's no wind, there is no wind energy.故填wind
【小题2】根据水能的优点it can make electricity(电）without pollution故填pollution
【小题3】根据水能的缺点However, people have to build dams(水坝) to use this energy, and building dams is very expensive. 故填expensive
【小题4】根据地热能的优点，故填Cheap
【小题5】根据太阳能的缺点，故填(fine) weather
考点：科普类短文阅读。