Question

Today Bob contradicted Ms. Li, our math teacher, in class, _____ made her angry with him.

A．that

B．which

C．what

D．who

Answer 1

B

试题分析：句意:今天鲍勃在课堂上反驳了李老师，这使她很生气。这里是定语从句，先行词是逗号前面的句子，关系词在从句中作主语，that不能引导非限制性定语从句，what不能定语从句，who的先行词必须是人，故选B。
点评：本题难度适中。定语从句是高中阶段的重难点之一，需要考生有分析理解复杂的句子结构的能力，能够正确理解句子的语境，熟练掌握关系词的意义及句法功能。这里考生容易误选B。
即学即练：Many provinces in China were attacked by such terrible snowstorms this early winter______few people had experienced before, ______  made us worry about global climate changes. 
A. that; that     B. as; which       C. which; it      D. when; as
解析：B。句意：such修饰先行词，而且experience缺少宾语，因此用as,不用that;而which引导非限制性定语从句，指代前面的内容。