At_______time does the salesgirl get up late in the moming. She is too busy to take a good rest.  [ ]

A. no          

B. any          

C. each        

D. one

煤的工业分析包括对水分、灰分、挥发分的测定和（）的计算。

A.矿物质

B.化合物

C.固定碳

D.固定硫