A:focusing o
B:focusing i
C:focused i
D:focused o
华枝睾吸虫身体上最发达的器官是( )
如图,在Rt△ABC中,∠C=90°,点O在AB上,经过点A的⊙O与BC相切于点D,与AC,AB分别相交于点E,F,连接AD与EF相交于点G.