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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
In general, the point of "that" and "those" is to stand for nouns without any attached modifiers/descriptions.
There's an explicit contrast with "it" and "they", which stand for a noun with all of the attached modifiers.
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