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Visual Basic语言程序设计单选题中等

在VB中，要打开一个顺序文件用于写入数据，应使用以下哪个语句？

AOpen "test.txt" For Output As #1
BOpen "test.txt" For Input As #1
COpen "test.txt" For Random As #1
DOpen "test.txt" For Append As #1
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