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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
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还是要理解句字意思：The sentence, as stands, is confusing. It implies that the 'small cars' are now more fuel efficient than they were in the past. That is the manufactures took an old small car and said, "hey let's make this more efficient." Clearly, however, the small cars today are different from those in the past.we can omit (A), (B).
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