Qiyun，Feifeng，Shangsheng，Cuiping and Juhe.

　　The Xiling Gorge，which is about 76 kilometers long，extends from Xiangxikou of Zigui County to Nanjinguan of Yichang.It is the longest gorge of the three and has many rapids and shoals.But now navigation has become very safe.

　　1．overall adj. 全部的；全体的

　　2．breed v. 繁殖；孕育

　　3．shoal n. 浅滩

　　4．navigation n. 航行

　　1．Which one is the shortest but the grandest of the Three Gorges?

　　2．Where does the Yangtze River start with?

　　【答案】　1.The Qutang Gorge.

　　2．It starts with the Tuotuo River.

Section Ⅰ　Introduction & Reading and Vocabulary-Preparing

　　根据提示写出下列单词

　　1． n． 洞；山洞

　　2． n. 平原

　　3． n. (海、湖、河等的)岸

　　4． n. 斜坡

　　5． n. 山谷

6． n. (常作复数)树林