扫描二维码，直接登录
题库 / Prep2007E2-SC-131
Today's technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.
small cars more fuel-efficient now than at any time in their
small cars that are more fuel-efficient than they were at any time in their
small cars that are more fuel-efficient than those at any other time in
more fuel-efficient small cars than those at any other time in their
more fuel-efficient small cars now than at any time in
请看讲解视频
a比较时间：now than at any time in history，是同物比较，同一批cars
b和c比较cars，区别在they和those，同理they是同物比较，those换了一批cars
d和e比较的是形容词更efficient
登录 或 注册 后可以参加讨论