Edward doesn't like his car. He thinks ________ is more modern than his.
A:I
B:me
C:mine
D:my
小明从一个甜瓜里共取出50粒发育完全的种子,请问在该瓜发育前,至少有几粒花粉落在了该花雌蕊的柱头上?( )
羽毛长大约____厘米.
萝卜长大约____厘米.
铅笔长大约____厘米.
钟表上的分针和时针经过20分钟,分针和时针旋转的度数分别是( )