求解prep08中一个关于对比题中省略的问题

哈雷扫把 · 发表于 2012-8-6 10:49:02

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

a. Same as above
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
这道题的答案是C

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.
A.   a greater proportion than it was
B.   a greater proportion than
C.   a greater proportion than they have been
D.   which is greater than was so
E.   which is greater than it has been
这道题的答案是B
为什么第二道题的正确答案可以省略掉proportion，than后面直接跟介词短语，而第一道题不可以呢？单独看的时候我都没有问题，可是两道题放在一起我发现我很困惑，求指教

rabbit1937 · 发表于 2012-9-9 14:52:27

当然这道题目可以有很多方法排除，比如说A中的today与now重复；各种in any time（也包括现在）错误。

就比较部分的语法来说，A和B我认为都没有错。但是不同结构下面，比较的含义就发生了改变，或者发生了歧义。

例如B中，they指代前面的car，就有问题了。A中的问题更多，at any time到底是说谁，和谁的时间比，technology？car？过去的还是新的car？搞不清楚

本贴相关题目 GMATPrep-2008E2-SC-197 | TN-01-SC-16 (BAHB)

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