He was educated at the local high school, he went on to Beijing University.
A. at which
B. after which
C. in which
D. during which
网友回答
A. at which
(答案→)B. after which
C. in which
D. during which
解析：句意，他就读于当地的一所高中，之后他就去北京大学读书了。分析句子结构，逗号之后是由介词+关系代词引导的非限制性定语从句，根据所表达的意思，在……之后，所以用介词after。