如图,在梯形ABCD中,AD∥BC,中位线EF交BD于点O,若FO-EO=6,则BC-AD为____.
一Tom, don't be . You should make your bed every morning.
— Sorry, Dad. I'll do it now.
下列各句中,加横线的词语运用正确的一项是( )
赤道横穿的大盆地是____ 盆地,属____ 气候。