Chinese people have used wind power for thousands of years. Because the need of war, Zhang Liang invented the kite. To send messages, Zhuge Kongming the sky lantern.
Wind power is clean resource of energy. Now we use it to make electricity mainly. Wind makes windmills spin （风车旋转）. When the windmills spin, they make electricity. It is said there are millions of windmills in the world now. Why is wind power so popular? First, it's clean. Windmills don't pollute the environment at all. , we can use wind power forever （永久） because there is always wind in .
Some people say building windmills will be harmful to the environment. There is no need to about it. As long as （只要） we choose the places, they won't destroy the environment around. Also, windmills are always in unfrequented （人烟稀少的）, their noises can't disturb us at all.
Wind power is becomingand more common. So far, more than 80 countries have used wind power to make electricity. About 2.5 percent of the world's power comes from the wind.
