A.It's the same over the 10-year period. B.It's getting worse over the 10-year period. C.It's getting better over the 10-year period. D.There is no way to solve the problem.
A.It's B. B.It's C. C.It's D. D.There E.
【参考答案】
C 解析:录音原文最后提到the growth rate has…for average card holde......