Lucy said that she would pay a visit to Beijing in July, ,I think , is a good chance for her to know China.
A. which
B. it
C. when
D. where
网友回答
(答案→)A. which
B. it
C. when
D. where
解析：考查定语从句。本定语从句的先行词是she would pay a visit to Beijing in July这件事情，which指代前面一句话的内容在句中做主语。B不能引导定语从句。CD在定语从句中做状语。句意：Lucy说他在7月份要去北京参观，我认为这件事情对她了解中国很有好处。故A正确。