A:良庖岁更刀
B:辞楼下殿,辇来于秦
C:函梁君臣之首
D:于是项王乃欲东渡乌江
It is many years since we began to enjoy a _______ spring holiday each year.
组合
Ⅰ
Ⅱ
亲代
蓝羽♀×绿羽♂
(甲) (乙)
黄羽♀×绿羽♂
(丙) (乙)
子代
部分个体
白羽♀蓝羽♂
(丁) (戊)
白羽♂黄羽♀
(己) (庚)