资源简介
（友情提示：鼠标拖选单词即时翻译）
Content: Comic strip and welcome to the unit
Teaching aids: a tape recorder, pictures of trailwalkers
Teaching aims: 1) Have the Ss know sth. participating in charity events and how they can support charity events.
2) To introduce different kinds of needs and disabilities
3) To encourage Ss to talk about how they can help those people in need.