29.B【解析】推理判断题。根据第三段中的“Trancik says charging stations must also be made widely available.”"It's important to put chargers where many different people can have access to them,"she says."Notjust wealthier people..”可推知,她认为充电站可能会布局不均。故选B。
30.A【解析】推理判断题,根据第四段中的“green electricity is part of the solution to climate change,and electriccars are just the beginning.”以及“'It is now abundantly clear that electric is the future.”“It will be a totallynew world.”可知,Viswanathan认为未来绿色电能将会被广泛使用。故选A。
31.D【解析】标题归纳题。本文第一段谈到世界各国都渴望有更多的电动汽车上路。第二、三段谈到电动汽车需要的电池和充电站的修建情况,第四段谈到电动汽车的销售情况以及专家对电动汽车未来的看好。综上可知选D。