鸟类与飞翔生活相适应的特点是 [ ]
A.被覆羽毛
B.胸肌发达
C.有角质喙
D.趾端有爪
答案:B
失范型自杀
选择填空。
______ the gate, there is ______ eastern hall. [ ]
A.Near, a
B.Next to, an
C.On, an