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【单选题】
运行下面这段代码的结果为string day = "Monday";switch (day){case "Monday":case "Tuesday":case "Wednesday": Console.Write("去上课");break;case "Saturday": Console.Write("，聚餐"); break;case "Sunday": Console.Write("，逛街"); break;default: Console.WriteLine("，睡觉"); break;}A.
去上课
B.
去上课，聚餐，逛街，睡觉
C.
什么都不输出
D.
编译出错
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【单选题】The class is unusual_______ the students are all over fifty and none of them attended the middle
A.
23. The class is unusual_______ the students are all over fifty and none of them attended the middle school when they were young. A．in how
B.
in what
C.
in which
D.
in that
【简答题】显示单价大于出版社为“江苏大学” 所有书籍价格的图书信息
【单选题】The students are all gone.Because of the bad weather, the teacher permitted them _____ early.
A.
leave
B.
to have left
C.
to being leaving
D.
to leave
【单选题】关系模型中,下列关于候选键说法正确的是 _______
A.
可由其值能惟一标识该关系中任何元组的一个或多个属性组成
B.
可由多个任意属性组成
C.
至多由其值能唯一标识该关系任何元组的一个属性组成
D.
其余都不是
【简答题】x=0.1010,y=0.0011,求x+y。
【简答题】The students are all late ________ the top students.
【单选题】_______the class, the students are all noisy. [ ]
A.
Begin with
B.
At the begin
C.
At the beginning
D.
At the beginning of
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