在接待入境旅游团队时,全陪与地陪—起应提前( )到达接站地点,迎接旅游团。
A.10分钟
B.20分钟
C.30分钟
D.60分钟
参考答案:C
某商品标价6000元,若以9折出售仍可获利8%,该商品的进货价是多少元?
They have been skating _______. [ ]
A. for three hours ago
B. since three hours ago
C. three hours ago
D. since three hours