问题补充：
Is this dictionary you bought yesterday?
A. that
B. which
C. the one
D. where
答案：
A. that
B. which
(答案→)C. the one
D. where
解析：考查定语从句，先行词是this 疑问句不容易理解 先把他换成陈述句 This dictionary is you bought last month ?显而易见，这是一个定语从句 缺少先行词和关系代词又易分析 you visit 后少宾语 宾语是this dictionary所以关系代词可以省略，但是先行词不能省，所以用the one 代替this dictionary!故选D
