山东省2012年
高考英语书面表达专项训练：阅读表达+写作（20） 书面表达第一节 阅读表达［1］scientists in the united states are working on a technology that uses human energy to power devices like cell phones, laptop computers, and gps systems. [2]tom krupenkin, who teaches electrical engineering at the university of wisconsin and his team want to reduce dependence on costly and polluting batteries. instead of using batteries for power, they have turned to human beings and have placed a device in a shoe that collects and stores energy from human motion and turns it into electricity. one part of this device is an energy harvester. it has two small containers filled with thousands of very small drops of liquid. these droplets get pushed back
