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【单选题】
听力原文：M: I'd like to book a few seats for 'Hamlet', please. W: Yes, sir. M: Have you got any seats downstairs? W: Yes, we have. M: How much are they? W: $3.75 each. M: Are there any seats for $2.50? W: Yes, there are--upstairs. How many? M: Four, please. W: For which night? M: What about Saturday, October 21st? W: I can give you four seats in Row 8. M: How long will the performance last? W: Two and a half hours. M: Thank you. How much will that be in all? Why doesn't the man book the seats downstairs?A.
Because the seats are too expensive.
B.
Because the seats are too close to the stage.
C.
Because the seats are uncomfortable.
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【单选题】关于T-SQL语言中标识符的描述,正确的是( )
A.
首字母必须是下划线。
B.
不能使用SQL关键字。
C.
可以含@、#、&、^等字符
D.
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【单选题】关于T-SQL语言中标识符的描述,正确的是()
A.
首字母必须是下划线
B.
不能使用SQL关键字
C.
可以包含@、#、&、^等字符
D.
以#为首的标识符表示一个局部变量