Question

GMAT语法一道。急！

In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.

A. chores; by 1997 they had spent nearly six hours a week
B. chores; by 1997 that figure had grown to nearly six hours a week
C. chores, whereas nearly six hours a week were spent in 1997
D. chores, compared with a figure of nearly six hours a week in 1997
E. chores, that figure growing to nearly six hours a week in 1997
答案是B。请详细说一下C，D怎么错了，尤其是C。谢谢！

Answer 1

是语法指代的问题。不能出现歧义。分号前后都是一个独立的句子。当然句子之间也是有一定的联系的

B. 前面有且仅有一个figure，且明确定义了，所以用"that figure"意思就是如前所述定义的figure。

A，by 1997 they had spent nearly six hours a week （on what?究竟做什么了？没人知道）

C nearly six hours a week were spent in 1997 谁在花费时间做做什么？没人知道的啦。也是不清楚

D compared with a figure of （what figure？a是泛指，世界上任何一个figure的可以吗?）nearly six hours a week in 1997

希望帮到你哈···

这个逻辑性有点强·