单击此处编辑母版标题样式单击此处编辑母版文本样式第二级第三级第四级第五级第一课时 Section A(1a2d)01 基础过关 Ⅰ. 根据句意及首字母提示填写单词1. We can clearly see fish swimming at the b________ of the river.2. The girl seldom goes outside because of an u__