【问】
His sister has become a lawyer, ____ he also wanted to be.（2005年湖北卷29题）
A. who B. which
答案：B
问题：painter是“画家”，为什么不用who指代？
【答】
这里的lawyer是一种“职业”，而不是某个“人”。指代“职业，身份”类的含义，通常用which而不是who。再如：
- He is determined to be a lawyer after graduation, which is one of the most rewarding jobs on the planet. 他决定毕业后做律师，律师是世界上回报最高的职业。