题型:阅读选择 题类:常考题 难易度:容易
浙江新目标(Go for it)版2018-2019学年初中英语七年级下册 单元测试卷(十一)(含小段音频)
New Energy in the Twenty-first Century
Energy from wind
Wind is a kind of clean energy, and there is lots of it, but, if there's no wind, there is no wind energy.
Energy from the water
When water from a high place to a lower place, it can make electricity(电) without pollution. However, people have to build dams(水坝) to use this energy, and building dams is very expensive.
Energy from the earth
There is heat in the rocks under the earth. Scientists use the beat to make geothermal(地热的) energy. This kind of energy is cheap and clean, but it is only possible in a few places in the world.
Energy from the sun
Solar panels(太阳电池板) on the roofs of house can tum energy from the sun into electricity. Solar power is clean and plentiful(丰富的). When the weather is bad, it doesn't work.
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