-Don’t worry. I'll talk _     him __       it.      

-Thanks for your help.      [ ]

A. to; with                      

B. with; to      

C. to ; about'                    

D. about ; to

碎煤机打击板磨损厚度不超过（）

A、1/2

B、1/3

C、1/4

D、3/4