It is hard to __________ the green beans from the red ones, because there are too many of them.[ ]

A. work out  

B. watch over

C. sort out  

D. set down

申请人撤回行政许可申请，自收到质检部门终止办理行政许可书面凭证之日起（）内，不得再次提出该行政许可申请。

A.三个月

B.六个月

C.一年

D.两年