—I can’t keep myself active during the day.

—You _______ take more exercise.[ ]

A. must not

B. must be

C. need to

D. may be

关于邮政人民币活期储蓄存款账户描述正确的有（）。

A.个人储蓄存款账户不记名不挂失

B.个人储蓄账户不得办理转账结算

C.个人储蓄账户仅限于办理现金存取业务

D.个人储蓄账户不得加办绿卡