— Excuse me. _____ is the bookshop?
— There it is.
[ ]
A. How
B. What
C. Where
D. Who
答案:C
My mother usually gets used to ______ late. [ ]
A. go to bed
B. going to bed
C. getting to the bed
由120kg煤样,最后缩分出1kg样品,在此过程中,总共缩分多少次?缩分比少