— Doesn't this bus go to the park?

　　　　— ________.

A．Yes, we do

B．No, this is as far as we go

C．You’re welcome

D．I ‘m very sorry

国债的债务负担率是指( )。

A．当年国债发行额与当年GDP的比率

B．国债余额与当年GDP比率

C．当年国债发行额与当年财政收入的比率

D．国债余额与当年财政收入的比率