2010 Beijing Question 4 Single-choice Differentiating 2010_北京卷 (2010·理) 4.(5分)(2010•北京)8名学生和2位老师站成一排合影,2位老师不相邻的排法种数为( ) A. A88A92B. A88C92C. A88A72D. A88C72 Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →