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【单选题】
—— Excuse me, is this Mr. Brown’s office? —— I’m sorry, but Mr. Brown＿＿＿works here.He left about three weeks ago.A.
not now
B.
no more C not still D. no longer
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举一反三
【单选题】如果对选课表中学生的选课成绩限定在0~100这个输入范围,应使用( )约束。
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
UNIQUE
D.
CHECK
【单选题】Comparatively speaking, the solution part is _____ the problem part in problem-solution order.
A.
less important than
B.
as important as
C.
none of the above
D.
more important than
【单选题】A ______ to this problem is expected to be found before long.
A.
result
B.
response
C.
settlement
D.
solution
【单选题】Telecommuting——substituting the computer for the trip to the job-has been ______ a solution to all kinds of problems related to office work.
A.
hailed as
B.
drawn out
C.
born out
D.
lodged in
【单选题】如果对选课表SC中学生的选课成绩grade限定在0~100这个输入范围，应使用（ ）约束。
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
UNIQUE
D.
CHECK
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