問題詳情
【題組】39.According to the passage, what is the primary disadvantage of biofuels?
(A)They are a renewable resource.
(B)They consume a lot of energy during the production.
(C)They can replace a large amount of oil consumption.
(D)The process of making them is too complicated.
參考答案
答案：B
難度：適中0.691154
統計：A(49),B(461),C(84),D(73),E(0)