The Silk Road was ______ long that it passed through many countries.
A:quite
B:too
C:very
D:so
如图,圆锥的底面半径OA=2cm,高为PO=42cm,现有一个蚂蚁从A出 发引圆锥侧面爬到母线PB的中点,则它爬行的最短路程为( )
What color is it?
下列各项中属于生命现象的是( )