is well known Taiwan is part of China.A. AsB. ThatC. WhichD. It

问题补充：

is well known, Taiwan is part of China.

A. As

B. That

C. Which

D. It

答案：

(答案→)A. As

B. That

C. Which

D. It

解析：考查非限制性定语从句。As引导的非限制性定语从句可以放在句首，翻译为：正如；that不能引导非限制性定语从句。Which引导的非象征性定语从句不能放在句首，