I often laugh when I see my grandma learning pop songs. But she says, "One is never             old to learn". [ ]

A. too

B. so

C. very

D. quite

我国现行税法规定，对于借贷双方签订的流动资金周转性借款合同，只以其规定的最高借款金额为计税依据，在签订时贴花一次，在限额内随借随还的款项，无论是否签订新合同，均不再另行贴花。 ( )