[3]“The car is easy to drive.A person without any driving experiences could learn to use it in several minutes.It fits for campus and the golf course，” He Daijie，the leader of the invention team and a senior at the college，told the Global Times.Or if one prefers it can be turned into moped scooter(电动助力车)，he said.

　　Seeing the light

　　[4]Four students at Shenyang University of Technology in Liaoning Province invented a door light powered by electric energy produced by opening and closing a door.

　　[5]The invention won first prize at the First Low Carbon Environmental Creative Competition for College Students(in Liaoning competition area)held recently by the China Environmental Protection Foundation.The students were given 100,000 yuan($15,030)to help them start a business.

　　[6]When people open or close a door，the door produces mechanical energy that could be turned into electric energy.After numerous tests for several months，the students fixed a joint lever(连接杆)above the door that connects the door and a speeding gear case to drive a generator attached to the door and send energy to storage cells.The storage cells provide ______ for the light.

　　[7]A college student's dorm door is opened and closed about 60­100 times a day，which could produce 160­280 milliamps of electric energy.It takes 160 milliamps to keep a light working for at least 10 hours，said Xia Yingbiao，one of the invention team members and a mechanical design and manufacturing and automation junior.

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