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【单选题】
打开磁盘上的文件"C:\T1.txt"，清除原内容，写入新内容，应使用语句__________打开文件。A.
FileOpen(1,"C:\T1.txt",OpenMode.Output)
B.
FileOpen(1,C:\T1.txt,OpenMode.Input)
C.
FileOpen(1,C:\T1.txt,OpenMode.New)
D.
FileOpen(1,"C:\T1.txt",OpenMode.New)
E.
FileOpen(1,"C:\T1.txt",OpenMode.Input)
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