zepto【ＢＩＯＦＵＥＬ：Ｒｏｂｂｉｎｇ Ｐｅｔｅｒ ｔｏ Ｐａｙ Ｐａｕｌ？】
来源：教学设计 发布时间：2019-04-10 05:33:10 点击：
Since the worsening global climate has worriedpeople around the world, there is a rush to findanswers. Many countries begin to substitute thegreenhouse gas-emitting fossil fuels with biofuel, a kindof new energy processed from plants. There are twokinds of biofuel: ethanol, processed from sugarcane orcorn, and biodiesel, made from biomass.