_____________ are good friends.[ ]
A. I and he
B. He and I
C. I and his
D. He and my
答案:B
下列属于行政处罚的是()。
A.警告
B.拘役
C.有期徒刑
D.劳动教养
溶液析出晶体后,其剩余溶液是( )
A.饱和溶液
B.不饱和溶液
C.只有溶剂
D.稀溶液