<h3>1，预习课本（5分钟）</h3> <h3>预习填空</h3> <h3><a href="http://db.jndjg.cn/video.aspx?menutype=84&subtype=107&thirdtype=109&id=4397" target="_blank" class="link"><span class="iconfont icon-iconfontlink"> </span>网页链接</a><br></h3><h3>点击上面的链接观看视频</h3> <h3>3，课堂练习</h3> <h3>4，课堂巩固</h3>