There are many such cases________consumer complaints have contributed to changes in the law. [ ]

A. that  

B. as  

C. where  

D. which

“饮冰室主人”是近代一位杰出作家的别号，这位作家是（）。

A.夏曾佑

B.蒋智由

C.梁启超

D.黄节