问题
选择题
The Diaoyu Islands have been part of China’s territory since ancient times, __________ as important fishing grounds of Taiwan.
A．served
B．to serve
C．serving
D．having served
答案
答案：C
题目分析：考查现在分词做状语：句意：钓鱼岛自从中国古代就是中国的领土，做为台湾重要的渔业基地。The Diaoyu Islands和serve as是主动关系，用现在分词做状语，选C.