He won the match because he took the advantage of his height.
A:played a joke on
B:made full use of
C:came up with
构造如图1所示的图形,在⊙O中,AB是直径,点C在⊙O上,所以∠ACB=90°,作CD⊥AB于D.设∠BAC=α,则sinα= BCAB=13 ,可设BC=x,则AB=3x,….
一个草履虫每天大约能够吞食43000个细菌,这与它体内的某种结构有关,该结构是( )