Prep sc2 63老的，对于是否改变原文意思的一点疑问

洛洛洛洛

Compared to those who do not, running three days a week saves an average of 14.1 percent on health-care costs each year in the United States

.

(A) Compared to those who do not, running three days a week saves

(B) Compared with nonrunners, people who run three days a week save

(C) Compared to not running, those running for three days a week save

(D) When compared with those who do not, people running three days a week save

(E) When compared to nonrunners, running three days a week saves

答案是B选项，看了解释也能理解，但是原文的意思是不是那些没有1礼拜跑3次的人和一礼拜跑三次的人比较
但是B变成不跑步的人和一礼拜3次的人比较了呀...
所以我选了D...但是看了PREP笔记觉得D果然也不好...

weirui5621

唉 这个题目我犹豫了很久 最后也选了D，理由和楼主是一样的
感觉不跑步的人和一周跑三次的人之间有个GAP就是还有一周只跑一到两次的人，不过觉得D因为没有do可以指代的动作所以语法上肯定是错的，也就只能这么理解了

jtrchina

1.thoes who do not=nonrunners,each reffering to people who do not usually run,like me.
2."when" is not necessary.The beginning with "Compared" is enough to make the comparison.