问题详情

Accordingtothepassage，whatisthedifferencebetweenahomingpigeonandanordinaryone？查看材料
A.Thespanofthewings．
B.Theshapeoftheeyes．
C.Thetextureofthefeathers．
D.Thesizeofthebrain．
请帮忙给出正确答案和分析，谢谢！