问题
选择题
Ellen was a painter of birds and of nature，________，for some reason，had withdrawn from all human society.(2012·浙江，17)
A．which
B．who
C．where
D．whom
答案
答案：B
句意：埃伦是一个专画鸟类和大自然的画家。因为某种原因，她远离了人类社会。此题考查非限制性定语从句，修饰先行词Ellen。因为关系词指人并且在从句中作主语，所以只能用who。