The weather that day may not be as good as expected, in ________ case we will have to put off the

event.[ ]

A. what

B. that

C. this

D. which

有关系S(S#，SNAME，SEX)，C(C#，CNAME)，SC( S#，C#)。其中S#为学生号，SNAME为学生姓名，SEX为性别，C#为课程号，CNAME为课程名。要查询选修“计算机”课的全体女学生姓名的SQL语句是：
SELECT SNAME FROM S,C,SC WHERE______。

A．S#= SC.S# and SEX=“女”and CNAME=“计算机”

B．S#= SC.S# AND C.C#= SC.C# and CNAME=“计算机”

C．SEX=“女”and CNAME=“计算机”

D．S#= SC.S# and C.C#= SC.C# and SEX=“女”and CNAME=“计算机”