Unit One Section One Section Two Section Three Passage A Passage B Section Four Unit Two Section One Section Two Section Three Passage A Passage B Section Four Unit Three Section One Section Two Section Three Passage A Passage B Section Four Water................................................1Speaking................................................................. 1 Listening................................................................. 2 Reading ..................................................................5 Treasuring Water ...................................................................5 The Water Resources of China and SNWTP......................9 Writing..................................................................13 Three Gorges Dam........................... 17 Speaking...............................................................17Listening...............................................................19 Reading ................................................................21 Three Gorges Dam (��)........................................................21 Three Gorges Dam (��).........................................................25Writing..................................................................29 Dams (��).................................................... 33 Speaking...............................................................33Listening...............................................................35Reading ................................................................37 A Gravity Dam......................................................................37 An Arch Dam ........................................................................41 Writing..................................................................45 Unit Four Section One Section Two Section Three Passage A Passage B Section Four Unit Five Section One Section Two Section Three Passage A Passage B Section Four Unit Six Section One Section Two Section Three Passage A Passage B Section Four Dams (��).................................................... 49 Speaking...............................................................49Listening...............................................................51 Reading ................................................................53 The Embankment Dam.......................................................53 The Inflatable Dam .............................................................57 Writing..................................................................62 Spillways................................................... 65 Speaking...............................................................65Listening...............................................................67 Reading ................................................................69 A Normal Channel Spillway ................................................69 A Side Channel Spillway .....................................................74 Writing..................................................................77 Hydroelectricity.................................. 81 Speaking...............................................................81Listening...............................................................83 Reading ................................................................85 Hydroelectricity ....................................................................85 The Three Gorges Hydropower Station ...........................90 Writing..................................................................93