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(5) Three university students in Santiago, Chile, have developed a plant-powered device to charge their mobile phones.

(6)The three engineering students got the idea for the device while sitting in their school's courtyard. Their invention is a small biological circuit they call E-Kaia. (7) It captures the energy which plants produce during photosynthesis————a process of converting sunlight into energy.

A plant uses only a small part of the energy produced by that process. The rest goes into the soil. E-Kaia collects that energy. The device plugs into the ground and then into a mobile phone.

The E-Kaia solved two problems for the engineering students. They needed an idea for a class project. They also needed an outlet to plug in their phones.

One of the stutdent inventors, Camila Rupcich, says the device changes the energy released from the plant into low-level power to charge phones.

The E-Kaia is able to fully recharge a mobile phone in less than two hours.

未听先知

预览三道题各选项,由选项中出现的 battery, mobile phone, charger和 device等词可以推测,新 闻内容与手机充电有关。

详解详析

5. What did the three university students invent?

C)。(详解)新闻开头提到,智利圣地亚哥的三名大学生发明了一种为手机充电的植物动力设备。因此答 案为C)。


6. When did they get the idea for the invention?

A)。(详解)新闻中提到,这三名工程系的学生坐在学校的院子里时萌生了发明这种设备的想法。因此答为A)。


7. What the speaker say about the invention?

D)。(详解)新闻中提到,这种设备可以捕捉植物在光合作用中产生的能量。因此答案为D)。