矩形ABCD的两条对角线相交于点O,如果矩形的周长是34cm,又△AOB的周长比△ABC的周长少7cm,则AB=( )cm,BC=( )cm.
10,7
商品比价
Mr. Baker, a dozen students want to see you. () they wait here or outside?
A.Should
B.Will
C.Shall
D.Are