如图,梯形ABCD中,AD∥BC,点M是AD的中点,且MB=MC,若AD=4,AB=6,BC=8,则梯形ABCD的周长为( )
A:22
B:24
C:26
D:28
—Mike ,thank you for driving me home. — ______.Have a nice day!
染色体主要是由____和____组成的,其中,____是主要的遗传物质。
- Have you seen the film Dad, where are we going?
- Yes. It's interesting one.
如图,BD、CE相交于点A,下列条件中,能推得DE∥BC的条件是( )