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 (they 指代有问题, 如果指代children的话会令句子出现逻辑错误: 1997年还是1981年那帮孩子吗?)
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 (无逻辑或语法上的错误, 但相比选项B, 被动表达不如主动, 并改变句子重心)
D.
chores, compared with a figure of nearly six hours a week in 1997 (compared with没有与a figure对应的逻辑主语)
E.
chores, that figure growing to nearly six hours a week in 1997 (growing无法表达出完成的状态) |