北京大学2013年博士研究生入学考试英语试题（阅读部分）

Part IV Reading Comprehension（20%）

Directions：Each of the following four passages is followed by some questions or unfinished statements.For each question or unfinished statement，four answers are given.Read the passages carefully and choose the best answer to each question.Mark your choices on the ANSWER SHEET.(https://www.daowen.com)