—  Would you like to join us in the game?

—         , for I have something important to attend to.  [ ]

A. I will            

B. I'd love to        

C. I won't        

D. I'm afraid not

人体内残存了在其他哺乳动物体内相当发达的阑尾，这一生物进化中的证据属于       [ ]

A．化石证据               

B．比较解剖学证据     

C．胚胎学证据             

D．分子生物学证据