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【单选题】
已知关系模式：sc(sno,sname,grade)，各属性含义依次为、课程名、分数。要查找“数据库”课分数最高的学生的，正确的SQL语句是( )。A.
SELECT sno FROM sc WHERE sname='数据库'AND grade=MAX(grade)
B.
SELECT sno FROM sc FOR sname='数据库'OR grade＞=MAX(grade)
C.
SELECT sno FROM sc WHERE sname='数据库'AND grade=(SELECT MAX(grade) FROM SC)
D.
SELECT sno FROM sc FOR sname='数据库'OR grade=(SELECT MAX(grade) FROM Sc)
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举一反三
【单选题】I can’t find the pen I was given. Have you seen _____? [ ]
A.
it
B.
one
C.
this
D.
that
【单选题】The pen I ___ I ___ is on my desk, right under my nose.
A.
think, lost
B.
thought, had lost
C.
think, had lost
D.
thought, have lost
【简答题】(bare) _________ had the spokesman sat down when the reporters started asking questions.
【单选题】Your pen is very nice! Let me ______. [ ]
A.
have a look
B.
do my homework
C.
do a survey
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