【导读】这是一篇说明文。文章介绍了一项最新的科研发明——反太阳能电池板，它可以从寒冷的夜空中收集能量，然后通过利用地表和远处空间的温差来产生电能。目前的研究成果是它可以成功为一只小灯泡提供电能。
D
A new device works like a solar panel，except that it doesn’t harvest energy from the sun. It absorbs energy from the cold night sky.
A prototype(原型)of the device produced enough electricity at night to power a small light bulb. A bigger version might one day light rooms or charge phones. It also could power electronics in remote or low-resource areas that lack electricity.
Researchers tested a 20-centimeter prototype one clear December night in Stanford，California. The generator produced up to about 25 milliwatts of power per square meter of device. That was enough power to light a small light-emitting diode，or LED bulb. Further improvements might increase its production to at least 500 milliwatts per square meter. To do that，the system might need more insulation around the cool top plate.
12. What can we know about the new device?
A. It gains energy from the sun.
B. It’s been widely used in life.
C. It is cooler than a solar panel.
D. It’ll be popular in special areas.
13. What does the author mainly talk about in Paragraph 3?
A. Application fields of the device.
B. The developing process of the device.
C. The working principle of the device.
D. Significant effects of the device.
14. How can the device produce more electricity?
B. By using it in extremely cold and clear nights.
C. By attaching the bottom plate to a warm plate.
D. By covering the top plate with a transparent lid.
企业回北京颐光新源科技有限公司是INC.中国区域总代理。颐光新源是一家集开发、制造和销售太阳能电池测试系统、太阳光模拟器、光学元器件、光谱仪器、光电设备和与光学系统有关的仪器设备为一体的高新技术企业。产品涉及太阳能电池测试系统（可扩展为。
15. What could be a suitable title for the text?
1 unit time set：by pressing the key for 6 or 7 sec, the LED light one by one, this means the controller in a set condition. press the key again, set the unit time. normally, for convenience the L。
B. A Device Bringing New Hope for Those in the Cold Night
C. The Difference Between a Solar Panel and a New Device
D. The Temperature Difference Between Earth and Outer Space
D
C
太阳能将转化为电能给充电器内置可充电电池充电.B.将充电器用USB线连接到电脑,此时充电指示灯会闪光,表示正在充电,当充电满后,此灯将会熄灭.C.用交流适配器充电,
A
A
