甲、乙两物体同时同地向东做匀速直线运动，它们的s-t图象如图所示．由图象可知（ ）
A．甲的速度小于乙的速度
B．经过6s，甲在乙前面1.2m处
C．以甲为参照物，乙向东运动
D．以乙为参照物，甲向东运动
A、由图象知甲乙的s-t图象是一条倾斜的直线，所以甲乙都做匀速直线运动，
由图象知v甲=
=s甲 t甲
=0.2m/s，乙的速度v乙=1.6m 8s
=s乙 t乙
=0.1m/s，v甲＞v乙，故A错误．1.2m 12s
B、读图可知，经过6s，甲运动了1.2m，乙运动了0.6m，为甲、乙两物体同时同地向东做匀速直线运动，所以此时甲在乙前面1.2m-0.6m=0.6m处，故B错误；
CD、因为v甲＞v乙，甲、乙两物体同时同地向东做匀速直线运动，所以甲在乙车的前面向东运动，两物体的相对位置不断变化，以甲为参照物，乙向西运动，以乙为参照物，甲是向东运动的，故C错误，D正确．
故选D．
| 根据对话内容，从对话后的选项中选出能添入空白处的最佳选项.选项中有两项为多余选项。 |
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