题目

In the Olympic Games, they competed ____ the 800 meters ____ Australian competitors ____ the gold medal.A. in; with; for B. with; against; forC. in; for; for D. for; with; in 答案：【答案】A【解析】A 考查介词用法和搭配。句意：在奥运会上，他们与澳大利亚选手竞争800米比赛的金牌。in the 800 meters在800米跑项目中；compete with同……竞争；compete for the gold medal争夺金牌。故选A。菱形的一个内角为120°，平分这个内角的对角线长为8cm，则菱形周长为    cm．