You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You need to ensure that users can view content in a book-reading format that displays two pages at a time. Which control should you use?（）
- A、 FlowDocument
- B、 FlowDocumentReader
- C、 FlowDocumentPageViewer
- D、 FlowDocumentScrollViewer
正确答案:B
答案解析:有
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