—More than fifty students competed each other in the composition competition. —But they c

—More than fifty students competed each other in the composition competition.
—But they could only compete three medals.
A. in; for
B. against; with
C. against; on
D. with; for

(答案→)A. in; for B. against; withC. against; onD. with; for解析：考查介词。句中compete in在……方面竞争；compete 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。

对的，就是这个意思