A:①③④
B:②③④、
C:①②③
D:①②③④
下列关于分子、原子、离子的说法,不正确的是( )
设a=log23,b=log20.7,c=log51,则a,b,c的大小关系是( )
— Did you listen to the program yesterday?
— Yes. I can't believe I heard her singing ______ the radio.