GWD21-Q6:
Heirloom tomatoes, grown from seeds saved from the previous year, only look less appetizing than their round and red supermarket cousins, often green and striped, or have plenty of bumps and bruises, but are more flavorful.
A. cousins, often green and striped, or have plenty of bumps and bruises, but are
B. cousins, often green and striped, or with plenty of bumps and bruises, although
C. cousins, often green and striped, or they have plenty of bumps and bruises, although they are
D. cousins; they are often green and striped, or with plenty of bumps and bruises, although
E. cousins; they are often green and striped, or have plenty of bumps and bruises, but they are
为什么是E呢？
A的问题在于逻辑混乱，often green and striped, or have plenty of bumps and bruises，不清楚是修饰主语tomatoes还是cousins.
B的问题和A类似，而且用although让步也不正确。
C的问题主要在于often green and striped, or they have plenty of bumps and bruises，这个they出现位置不对，要么应该直接在often green那里就出现；否则的话，green and striped有修饰counsins的嫌疑。
D的话主要就是although和前面的or，使这个句子不对称，也就是parrallel的问题。
E是很经典的关于分号的用法，一个分号后面接they,就是指代前句的主语，（除非出现单复数的一些变化），而且很重要的是E的后半句很对称，they are...or have...but they are...
以上拙见。请大家指正。
-- by 会员 pammy0926 (2010/1/28 17:13:52)