I'm sorry I know about it. It's a secret between them.
A:nothing
B:something
C:anything
D:everything
下列生物的生殖方式中,属于有性生殖的是( )
如图,若AB∥CD,∠1=65°,则∠2的度数为____°.
结合下列四种化合物的图示,有关叙述正确的是( )