【单选题】
— What about another coffee? —()
A、Yes,of course
B、No,thank you
C、Sorry for the trouble
D、You’re so kind
A、Yes,of course
B、No,thank you
C、Sorry for the trouble
D、You’re so kind
A、Do you know about business tax B、Can you give me a brief introduction about business tax C、What do you think about business tax
A、A. R3 is an ABR. B、B. R3 is not connec ted to the backbone. C、C. R3 has four neighbors. D、D. R3 is the DR for area 2.