It is reported that the police will soon _____ the case of two missing children. [ ]

A. look upon

B. look after

C. look into

D. look out

属于货币政策内部效应指标的有（）。

A.货币供应量增长率

B.货币购买力指数

C.货币贬值率

D.国民生产总值平减指数

E.国际收支概况