Question

In 2009 many countries are going through financial crisis，________has a great effect on many walks of life.　　　　　　　　　　　　　　　　　

A．it

B．which

C．that

D．what

Answer 1

B

考查定语从句。which引导非限制性定语从句，指代前面整个一句话。that不能引导非限制性定语从句。