如图1是一座立交桥的示意图(道路宽度忽略不计),A为入口,F,G为出口,其中直行道为AB,CG,EF,且AB=CG=EF ;弯道为以点O为圆心的一段弧,且
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所对的圆心角均为90°.甲、乙两车由A口同时驶入立交桥,均以10m/s的速度行驶,从不同出口驶出. 其间两车到点O的距离y(m)与时间x(s)的对应关系如图2所示.结合题目信息,下列说法:①甲车在立交桥上共行驶8s;②从F口出比从G口出多行驶40m;③甲车从F口出,乙车从G口出;④立交桥总长为150m.其中正确的是( )
- A、①②③
- B、①②④
- C、①②
- D、①