Four students at Shenyang University of Technology in Liaoning Province invented a door light powered by electrical energy produced by opening and closing a door. When people open or close a door, the door produces mechanical energy that could be turned into electrical energy. After numerous tests for several months, the students fixed a joint lever 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 electrical energy for the light.

　　A college student's dorm door is opened and closed about 60～100 times a day, which could produce 160～280 milliamps of electrical 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 designer and manufacturing and automation junior. If these lights were used with the invention at the entrances in Shenyang schools, about 700,000 kilowatt hours a year would be saved, the team said.The university is applying patents for the invention.

　　语篇解读：日新月异的高新科技并不总是发明家的创造，稚气未脱的学生同样占有一席之地，他们用自己的成果证明他们可以着眼未来进行设计。

　　1. Where is the first invention mainly designed to use?

　　A．On the traffic roads.

　　B．In parks and gardens.

【2017届高考英语一轮总复习精选测试题北师大版必修三Unit 9 A卷】相关文章：

★ 2014届高考英语一轮复习课时作业(十五)必修3Module 3《The Violence of Nature》（外研版）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（15）模块5 《Unit 15 Learning》（含解析） 北师大版必修1

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十二)选修7Unit 2《Robots》

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (39)

★ 四川省2016届高考英语一轮复习课时作业（30） Module 6 Animals in Danger 外研版必修5

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (77)

★ 2014届高考英语一轮复习课时作业(三十二)选修6Module 2《Fantasy Literature》（外研版）

★ 【三维设计】2017届高考英语（江苏专用）二轮复习素材：高考单词2.背佳句记单词

★ 【浙江专用】2014届高考英语一轮复习课时作业(二十九)选修6Unit 4《Global warming》

★ 2017届高考英语二轮复习课时训练：7（含解析）