一、第一节1-5 BCCBB 6—8 ACC 9.It's in a cool valley.10.Spring.

　　第二节A.Drinking Enough Water B.fit C.brain D.trouble E.a water bottle

　　二、第一节11-15 CDCAA 16—20 CDBDB

　　第二节21—25 BACCB 26—30 CDADB三、31—35 ABDAC 36—40 DCABC

　　四、第一节41—45 BBCAD 46—50 DACDC

　　第二节51—55 CADEB

　　五、第一节56.journey 57.drops 58.eventually 59.forms 60.trade

　　第二节61.plays an important role 62.runs/travels through 63.As a result 64.steamengines 65.make sure

　　第三节Water is important to us in our daily lives.However,it is not easy to find freshwater that is clean and safe to drink nowadays.Therefore,we must do something to save water.First,the taps should be checked regularly to prevent water leakage.Second,we can set up SchoolWater Day and organize different kinds of activities to raise students'awareness of saving waterNo water,no life.Water is so valuable that we should not waste it in any way.