393.In one of the bloodiest battles of the Civil War, fought at Sharpsburg, Maryland, on September 17, 1862, four times as many Americans were killed as would later be killed on the beaches of Normandy during D-Day.
(A) Americans were killed as
(B) Americans were killed than
(C) Americans were killed than those who
(D) more Americans were killed as there
(E) more Americans were killed as those who
the key:A
比较考点：省略主语
shellyaaa:比较中，than 和 as 都可以兼做其后面比较部分的主语。(如果是主语和主语在比较的话) 所以都可以省略主语，直接接谓语。
400-600
404.In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s.
(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in
(D) two times faster than that of
(E) two times greater than
the key: C
比较考点：倍数+名词的用法