题目内容：

Aaron LeMieux loves to hike and often listens to the radio at the same time. While on a 1,500-mile hike 1. _______ the Appalachian Trail, Aaron started thinking about energy. Could the energy his body was creating be used to charge an electronic device? In 2006 Aaron quit his job 2. ________ turned the basement of his home into a laboratory. He then put all his time 3.________ developing the nPower PEG.

PEG means personal energy generator(发电机). 4.________ uses the energy you create while moving to charge a hand-held device. Just put your nPower PEG in your bag, 5.________ fasten it to your leg or bicycle. Then plug your MP3 player, cell phone or digital camera into your nPower PEG’s USA port. LeMieux’s company, Tremont Electric, claims 6. ________ nPower PEG can charge most hand-held electronic devices to 80 percent in one hour.

Since it costs US$149, the nPower PEG won’t appeal to everyone with its price so 7. ________. But for those 8.________ spend a lot of time with electronic devices powered by batteries, it might come in handy.