题目内容：

阅读短文，然后在下面的表格中完成内容提要，每空不超过3个单词。（共4个小题，每小题2分）

New Energy in the Twenty-first Century

Energy from the 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 moves 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 heat to make geothermal(地热的)energy. This kind of energy is cheap, 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 houses can turn energy from the sun into electricity. Solar power is clean and plentiful(丰富的).but when the weather is bad, It doesn't work.

New Energy in Twenty-first Century

	Advantages	Disadvantages
Wind Energy	Clean .There is a lot.	It needs 1.
Water Energy	2.	It is expensive.
Geothermal Energy	3.	only possible in a few places
Solar Energy	Clean and plentiful.	It depends too much on4.