如图,已知△ABC,AD平分∠BAC交BC于点D,BC的中点为M,ME∥AD,交BA的延长线于点E,交AC于点F.
—Would you mind picking up the last cigarette on the playground?
—_______. I'll do it right away.
由两组凸透镜组成的望远镜,关于它的物镜和目镜的成像原理,下列说法中正确的是( )