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1、Unit4WildlifeProtectionIt'ssaidthatdinosaursdiedoutbecauseofanunexpectedincident.Butwildlifetodaydisappearsorisindangerjustbecausehumansdoharmtoit.Forexample,tigersarehuntedforfurtomakecarpetssothattheyonlyliveinsecurereserves;grasslandisdestroyedwithoutmercysothatdus
2、tstormscomeintobeingaffectingdistantcities.Lastyear,scientistssawsomemonkeysrubbingthemselveswithacertainkindofinsectstoprotectthemselvesfromfiercemosquitoesbiting.Accordingtotheresultoftheinspection,theyfoundthattheinsectcontainsapowerfuldrug,solocalfarmerswereemploy
3、edtocatchtheinsects.Theendingwasthattheinsectsdisappearedfromthewholezone.Whentoldthatitwasalosstohumans,thefarmersburstintotearsandresponded,“Ourreallossisourdecreasingincome.”Weshouldappreciatethenaturalbalanceandpaymoreattentiontotheimportanceofwildlifeprotection.N
4、otuntilwesucceedinlettingwildlifeliveinpeacecanwesmileinrelief.据说恐龙因一次意外事件而灭绝了，但是今天的野生动植物却是因为人类的伤害而消失或处在危险中。例如，老虎被猎杀以获取皮毛做地毯，结果它们只生活在安全的保护区里；草地被无情地破坏，以至于沙尘暴开始形成影响遥远的城市。去年，科学家观察到猴子在身上擦某种昆虫来保护自己不受凶猛的蚊子的叮咬。根据检查的结果，他们发现这种昆虫含有一种具有强大效力的药物，于是，当地的农民都被雇用捕捉这种虫子。结局是，这种昆虫从这整个地区都消
5、失了。当被告知这是整个人类的损失时，农民们都突然哭着回应道：“我们减少收入才是我们真正的损失呢！”我们应该意识到自然平衡并多加注意保护野生动植物的重要性。直到我们成功让野生动植物平静地生活，我们自己才能如释重负地笑开颜。加餐练(一) 完形阅读组合练Ⅰ.完形填空Ihadneverhadabirthdaypartybefore.So,at18thissummer,Idecidedto__1__oneformyself.About20people__2__thattheywouldcome.AlthoughIdidn'thavemuch
6、pocketmoneythismonth,I__3__morethanusualinthe$1storetobuydecorationsandplates.Isat,Iwaited,and,althoughallofmy“friends”hadsaidtheywerecoming,__4__showedup!The__5__wassupposedtostartat12noon.Hereitwas4：00pmand__6__，noonewashere.Theicecreamcakewasnotas__7__asbeforeandth
7、efoodonthebarbecue(烤架)wasburnt__8__recognition.Itriedreallyhardnotto__9__.Allofasudden,Iheardanoiseofa(n)__10__，justoutsidemyfrontdoor.MyuncleKenny,clearly,dideverythinghecouldto__11__bydrivingalongway.Icriedinhisarms,saying,“I'mnotworthanything！”Hesaidthemagicalwords
8、__12__Icoulddrymytears:“Iwill__13__beyourfriend！”Likeme,hehadhadsomany__14__overthepastcoupleofweeks.However,aswesat__15__un
