一 Could you tell me _____?
一 Sorry, you can go and ask your teacher yourself.
A:how I can get the information
B:why I can get the information
C:how can I get the information
D:why can I get the information
空气质量的高低,可以用污染指数来表示.如果污染指数为5l~100,则表示( )
正比例函数y=kx的图象是经过原点的一条( )