is reported in the newspaper talks between the two countries are making progress.A. It B.

问题补充：

is reported in the newspaper, talks between the two countries are making progress.

A. It

B. That

C. As

D. Which

答案：

A. It

B. That

(答案→)C. As

D. Which

解析：考查非限制性定语从句：从两句话之间的逗号可知这是非限制性定语从句，as引导非限制性定语从句，指代整个主句的内容：意为：正如，which也可以引导非限制性定语从句，但意思是：这个或那个，而且不能放在句首，句意：正如报纸上报导的，两国之间的谈判正在取得进展。选C。