【题目】Maggie was born with her hair curly, _____ her mother considered to be a great piece of good luck.
A. which B. what
C. that D. when
在线课程【答案】A
【解析】
考查非限制性定语从句的引导词。句意：玛吉出生时头发卷曲，她的母亲认为这是一件很好的事情。分析句子可知后半句是非限制性定语从句，先行词为前边整个句子，指物，且先行词在定语从句中做宾语，故用which来指代。故选A。