Question

_______ excited her parents most was that he was admitted to his dream college.

1. A.
   That
2. B.
   What
3. C.
   Which
4. D.
   It

Answer 1

B
试题分析：考查主语从句。本题中的what引导的是主语从句what excited her parents most.连接代词what在句中作为主语。句意：最让他的父母兴奋的事情是他被梦想的大学录取了。It不能引导主语从句，that在主语从句中不能充当任何成分，只起引导作用。Which指特定范围之内的某一个。故B正确。
考点：考查主语从句
点评：在复合句中做主语的从句叫做主语从句，它的位置与陈述句基本结构中的主语相同。引导主语从句的关联词有：连词：that, whether；连接代词：who, whom, whose, what, which；连接副词：when, where, why, how；复合词：whatever, whoever, whomever, when?蛳ever, wherever, whichever, however.解答这类题目，关键在于分析清楚句子结构。通过判断引导词在从句中所作的成分及意义，来选择正确的引导词。