问题补充：
China has hundreds of islands, is Taiwan Island.
A. among them the largest
B. and the largest of which
C. and the largest of them
D. but in which the largest
答案：
A. among them the largest
B. and the largest of which
(答案→)C. and the largest of them
D. but in which the largest
解析：本题是复合句的考查，and连接两个并列句。
