【题目】The journey around the world took the old sailor nine months, ______ the sailing time was 226 days.
A.of which
B.during which
C.from which
D.for which

【答案】A
【解析】本题考查定语从句。关系代词 which指代 the journey。定语从句恢复为独立句子应是：The sailing time of the journey was 226 days. 故选 of which