身体有一个能快速做出反应的系统，即所谓的反射。 点击这里查看更多视频：https://alugha.com/FuseSchool 请访问我们的网站 www.fuseschool.org，我们所有的视频都按主题和特定的顺序精心编排，查看我们还提供了什么。评论、喜欢并与其他同学分享。你可以提问也可以回答问题，老师会为你解答。 这些视频可以采用翻转课堂模式，也可以作为学习辅助工具。 Twitter: https://twitter.com/fuseSchool 在FuseSchool平台和应用中获得更深入的学习体验：www.fuseschool.org。 这个开放的教育资源是免费的，并根据知识共享许可协议（Attribution-NonCommercial CC BY-NC）进行许可（见许可协议：http://creativecommons.org/licenses/by-nc/4.0/）。 你可以下载该视频用于非营利性、教育性目的。如果你想更改视频，请联系我们：info@fuseschool.org。
Learn about graphs. In this introductory video we will introduce coordinates, quadrants and the two axis: x-axis and y-axis. Click here to see more videos: https://alugha.com/FuseSchool VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders
Learn the basics about testing for negative ions. Which methods and techniques are used to test negative ions? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecomm
Learn the basics about coal, oil and gas hydrocarbons as part of the organic chemistry topic. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. JOIN our platform at www.fuseschool.org This video is part of 'Chemistry for
