Lesson1-SafetyandIntro.pptx 公开

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Michaela Willi Hooper

日上传

2018-10-01

修改日期

2018-10-01

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File Format: vnd.openxmlformats-officedocument.presentationml.presentation (Office Open XML Document, Office Open XML Presentation, Microsoft PowerPoint 2007+)

File Size: 243946

Original Checksum: 02f7011790baf43524aeece6d6f641a6

Mime Type: application/vnd.openxmlformats-officedocument.presentationml.presentation