We Chinese must stick to One-China policy, is of great importance to China.
A. that
B. which
C. what
D. where
网友回答
A. that
B. which
C. what
(答案→)D. where
解析：考查非限制性定语从句。先行词是 One-China policy，从句中缺主语，故选which，that不能引导非限制性定语从句。句意： 我们中国人必须坚持“一个中国”的政策，这对中国很重要。