【单选题】I have often heard the'ABC Song'____,but I have never heard Alice_____it. [ ]
【单选题】Never in my life _____ such a thing. [ ]
A.
I have heard of or seen
B.
had I heard of or seen
C.
have I heard of or seen
【简答题】商品运输包装上的“no hook”属于( )。A. A.警告性标志 B.指示性标志 C.唛头 D.危险性标志
【判断题】她被二强子卖到了白房子(低级妓院)里,无奈偷偷跑出去上吊自杀。——小福子( )
【单选题】在下列RDMS产品中,属于小型数据库系统的是