—More than fifty students peted each other in the position petition.
—But they could only pete three medals.
A. in; for
B. against; with
C. against; on
D. with; for
网友回答
(答案→)A. in; for
B. against; with
C. against; on
D. with; for
解析：考查介词。句中pete in在……方面竞争；pete for为……而竞争。句意——超过50名学生在作文竞赛中彼此竞争。——但他们只争夺3块奖牌。