The Chinese girl Zheng Daizi is a famous ________ in England. The Nokia company asked her to design a phone that is not ________ for the environment. As a result of her research, she found that normal phone batteries (电池) are expensive and bad for the environment. It also uses many good resources to ________ a normal battery. So she wanted to design a battery that is ________. Then a Nokia cellphone that drinks ________ was born.

The cellphone had a bio-battery. It gets power from sugar. So users only need to put a glass of cola into it, and then watch the cola turn into ________. Once the battery dies, only oxygen and water are ________. Bio-battery can ________ three to four times ________ than the usual batteries.

In fact, Zheng said that ________ cola, but also soda with sugar can be good resources to power the cellphone.