问两道比较结构的题目

1.Los Angeles has a higher number  of family dwellings per capita than any large city

C a high number of family dwellings per capita than does any other large city.

答案是C没什么疑问，我想问一下does 可以放后面吗，或者可以不要吗

2.According to surveys by National Istitute on Drug Abuse, about 20 percent of young adults used cocaine in 1979,doubling those reported in the 1977 survey.

D twice as much as those repeated in the 1977 survey

E twice the number reported in the 1977 survey

答案是E，我想问D错在哪里

请各位大人解疑

首先，恳请LZ标明题目出处及题号。

其次，一般大全里的题都可以在大全注释和讨论连接中找到答案。

最后，1.dose的补出是为了消除歧义，dose的位置是可前可后的，没什么关系。

2.D中的those指代有问题。

呵呵,谢谢斑竹MM~~~

偶是XDF的题,就没找出处了~~

下次一定不偷懒了