黑海通向地中海的门户是( )
A:苏伊士运河
B:土耳其海峡
C:乌拉尔河
D:马六甲海峡
如图,已知CD⊥AB于点D, BE⊥AC于点E,CD、BE交于点O,且AO平分∠BAC,则图中的全等三角形共有( )
Mid-Autumn Festival is _______ important festival in China.( )
This time____ ____ ____didn't do well in the exam.