并列连词and, but, as well as, or, or else, both … and, neither … nor, either … or, not only … but (also), rather than等以及从属连词than可连接两个对等的词和对等的结构。
例1：He went downtown, bought some books and visited his daughter.
例1：Your semester grade is based not only on how well you do on each test, but also on how you participate in class.
例1：Some find swimming more enjoyable than sitting at home reading.
例1：She is pleased with what you have given and all that you have told him.
prefer sth to sth
prefer doing sth to doing sth
prefer to do sth rather than do sth
would / had rather / sooner do something than do something, would / had as soon do something as do something (宁可……也不……)
Like their male counterparts, women scientists are above average in terms of intelligence and creativity, but unlike men of science, their female counterparts have had to work against the grain of occupational stereotyping to enter a "man's world."
(A) their female counterparts have had to work
(B) their problem is working
(C) one thing they have had to do is work
(D) the handicap women of science have had is to work
(E) women of science have had to work
按照平行结构的规则，用sb do sth的结构比较好
又要和前面unlike men of science相对应，所以答案E是最合适的