一道sc题,请高手指点　GWD-3-Q30

句子改错：GWD-3-Q30

Today’s technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.

1. small cars more fuel-efficient now than at any time in their
   
   
2. small cars that are more fuel-efficient than they were at any time in their
   
   
3. small cars that are more fuel-efficient than those at any other time in
   
   
4. more fuel-efficient small cars than those at any other time in their
   
   
5. more fuel-efficient small cars now than at any time in

我觉得按照OG的理论应该选D啊

答案是c,各位高手指教?

我大概猜得到你為什麼說OG想法是選D

OG是認為用從句形容名詞不如在名詞前面直接加形容詞

但是這裡不行,

D的話,those會指代more fuel-efficient small cars 這整串,造成than後面的比較沒有意義

d 的感觉是做更多的车

实际的意思是造更节油的车

改变句意了

我认为这道题可以从两个方面入手

１、their指代模糊，是指代cars还是manufacturer.所以我认为没有最好，避免了这一问题，由此可排除ＡＢＤ

２、由句意排除Ｅ