Question

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

[　　]

A．

It

B．

As

C．

That

D．

What

Answer 1

答案：B
解析：

As is reported in the newspapers 是非限制性定语从句，as指代talks between the two countries are making progress，在从句中作主语。

提示：

本题考查定语从句的引导词问题。定语从句一般要紧跟在其所修饰的先行词之后，只有as引导的非限制性定语从句的位置较灵活，可位于句首、句中或句末。本题中as在定语从句中作主语。which在定语从句中可作主语或宾语，不能位于句首；what不引导定语从句。定语从句引导词的选择关键有两点：一是先行词；二是引导词在从句中的作用。