They had a party __________ the evening of October 1. [ ]
A. in
B. at
C. on
D. /
答案:C
一箱可乐有24瓶,一箱雪碧也有24瓶,现在有12箱可乐和23箱雪碧,一共有多少瓶饮料?
对Korsakoff综合症有明显疗效的是()
A.维生素A
B.维生素B1
C.维生素B2
D.维生素B12
E.维生素C