A:1m/s2,11m/s2
B:-1 m/s2,11 m/s2
C:0,11m/s2
D:2 m/s2,7 m/s2
用方框中所给的短语填空
at all times,clean up,cheek in,pass on,in order to
若a>3,则|6﹣2a|=____ (用含a的代数式表示)