题干
— More than thirty students competed ______ each other in the English competition.
— But they could only compete ______ three medals.
— But they could only compete ______ three medals.
A：against; with
B：against; o
C：with; for
D：on; for
答案(点此获取答案解析）
C
同时要经过第一、第二、第四象限，则
应满足（ ）