A:me; her
B:me; his
C:us; his
D:us; her
— can you hear?
— I can hear a dog.( )
若一个三角形的外角平分线与三角形的一边平行,则这个三角形是 ____三角形.
分析下列图形回答有关问题:
(1)图中A是____ ,B是____ ,D是____ .
(2)如果DNA换成RNA,则A是____ ,B是____,D是____.