GWD的一道题

fzynshl

求问各位！
该题目为什么选b？用过去完成时合适么？
d选项为什么不对。。。。曼哈顿里讲compared with后的主语可以与整个句子做比较。。。
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  分析A选项
B  chores; by 1997 that figure had grown to nearly six hours a week  分析B选项
C  chores, whereas nearly six hours a week were spent in 1997  分析C选项
D  chores, compared with a figure of nearly six hours a week in 1997  分析D选项
E  chores, that figure growing to nearly six hours a week in 1997  分析E选项
正确答案：B

Fiona09

选项B中的过去完成时没有问题啊，不是有个时间提示词么？——BY 1997

选项D中compared with是一个过去分词短语，它只能修饰前面的一个词而不能是整个句子，这会造成对比对象的不准确。

Hope it helps ~~