— Look! How long ________ like this?

— Three weeks! It's usual here that rain ________ without stopping these days of the year.[ ]

A. has it rained; poured      

B. has it been raining; pours

C. is it raining; is pouring    

D. does it rain; has poured

在物价上涨时，企业采用（）计算存货时，存货的周转天数会被低估。

A.先进先出法

B.后进先出法

C.加权平均法

D.移动加权平均法