-- -- I get up at six o'clock.
A:What time do you get up?
B:Get up, please.
C:What time is it?
如图,在△ABC中,∠ACB=90°,BC=6,分别以点A和点C为圆心,以相同的长(大于 12 AC)为半径作弧,两弧相交于点M和点N,作直线MN交AB于点D,交AC于点E,连接CD.则DE的长为____.
大于-2.5而小于3.5的整数共有( )
已知圆O的半径为3,圆心O到直线l的距离为5,则直线l和圆O的位置关系是( )