语法与词汇 4.Some students of Peking University have ______ setting up a natural reserve on campus and authorities said they were collecting data and thinking about it.
【正确答案】 B
【答案解析】answer for“对……负责，充当……”；call for“号召”；fall for“爱上，上当”；stand for“代表，对……负责”。句意：北京大学的一些学生号召在校园里建立一个自然保护区，官方回应说目前正在搜集相关数据并且考虑一下。故选B。