初中生物 八年级 公开课合集 名师优课 一师一优课 初二生物 八年级下册 八年级上册
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| VIDEOS | |||
| MP4 | N/A | 480P | Download |
| MP4 | N/A | 360P | Download |
| AUDIO | |||
| MP4 | N/A | mp4a.40.2 | Download |
| MP4 | N/A | mp4a.40.2 | Download |
| MP4 | N/A | mp4a.40.2 | Download |
| THUMBNAILS | |||
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JPEG | Origin Image | Download |
转自空中课堂，仅供学习和教学使用，如有侵权可以删除
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