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初中生物第四单元第四章第四节“输血与血型”教材重难点精讲
这是有着26年教龄的初中生物教师为了帮助七年级的学生搞好七年级生物下册期末复习而专门录制的系列复习课短视频之一，希望朋友们能够喜欢。如果能够对读七年级的学生有所帮助，我将感到莫大的欣慰！
《七年级生物下册》教材精讲（已完结）18/26
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App06:57![初中生物第四单元第二章第二节“消化和吸收”[第1课时]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/a76b618f2b914a25a7670deac8616069~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20241107213330C88452446ACA8B63950D&requestFrom=704&version_code=80402&x-expires=1762522411&x-signature=OWndKlS%2FbBEfnacVq2o6dYjN6Vk%3D)
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