Today’s technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.
A. small cars more fuel-efficient now than at any time in their
B. small cars that are more fuel-efficient than they were at any time in their
C. small cars that are more fuel-efficient than those at any other time in
D. more fuel-efficient small cars than those at any other time in their
E. more fuel-efficient small cars now than at any time in
为什么选C,D不是比C更好么
fuel-efficient small cars GMAT中这样的表达不好
用定从可以避免掉这个问题 而且还可以保证than前后对象的对称
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