问题详情

According to the last paragraph， which is NOT true of the new fuel cells？ 查看材料
A.The new fuel cells run on sugar that is easy to find.
B.The new fuel cells are environment-friendly.
C.The new fuel cells are biologically degradable.
D.It will take some time before the new fuel cells can be used in popular products.请帮忙给出正确答案和分析，谢谢！