答案:B
So hard was the woman's life, but to her _____ , her only son was admitted to a top
university last year. [ ]
A. surprise
B. relief
C. astonishment
D. disappointment
(53)至(54)题基于以下的叙述: 关系模式R(B,C,M,T,A,G),根据语义有如下函数依赖集:F=(B→C, (M, T)→B, (M,C) →T, (M,A) →T,(A,B) →G)。
R的规范化程度最高达到
A.1NF
B.2NF
C.3NF
D.4NF