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https://v.youku.com/v_show/id_XNDA5NDEwMDkwMA==.html?spm=a2h3j.8428770.3416059.1
语速偏快，有点赶。没有说清楚重难点确立依据。课前准备说到了。说教学过程中的设计意图没说清楚。也没详细说明如何实现教学目标和突破重难点的。