The conference will begin in an hour; ________, let's have a rest.
A:on the meantime
B:in the meantimes
C:in the meantime
D:in meanwhile
“一猪生九子,一窝十个相”,这句谚语说明了生物界普遍存在( )
如图,在线段AE同侧作两个等边三角形△ABC和△CDE(∠ACE<120°),点P与点M分别是线段BE和AD的中点,则△CPM是( )