When you feel helpless and _______, just remember you are not _____ in the world because your friends are around you, including me.

A．alone; alone

B．lonely; lonely

C．alone; lonely

D．lonely; alone

五棱台ABCDE-A₁B₁C₁D₁E₁的表面积是30,侧面积等于25,则两底面积的和等于

A．5

B．25

C．30

D．55