高二奥赛阅读理解专题

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1、高二奥赛阅读理解专题专题一II.阅读理解(Readingcomprehension)(共20小题；选择题5小题，每小题1分，非选择题15小题，每小题2分，计35分)A)选择题：阅读下面短文，从A、B、C、D四个选项中，选出能回答所提问题的最佳答案。(答案涂在答题纸上)Everyyearmoreandmoreplantsandanimalsdisappearnevertobeseenagain．Strangely，itisthemostintelligentbutmostthoughtlessanimalthat

2、iscausingmostoftheproblems—man．Natureisverycarefullybalancedandifthisbalanceisdisturbed，animalscandisappearalarmingly（令人担忧地）fast．Everyday，thousandsofspeciesofanimalsdrawclosertoextinction．Therearecountlessnumberofspecieswhichmaybecomeextinctbeforetheyareeven

3、discovered．Inmanylakesthefisharedying．Fishermenareworriedbecauseeveryyeartherearefewerfishandsomelakeshavenofishatall．Scientistsarebeginningtogetworriedtoo．Whatiskillingthefish？Theproblemisacidrain．Acidrainisakindofairpollution．Itiscausedbyfactoriesthatburnc

4、oaloroilorgas．Thesefactoriessendsmokehighintotheair．Thewindoftencarriesthesmokefarfromthefactories．Someoftheharmfulsubstancesinthesmokemaycomedownwiththerainhundredsofmilesaway．Theraininmanyplacesisn'tnaturalandcleananymore．It'sfullofacidchemicals．Whenitfall

5、sinlakes，itchangesthemtoo．Thelakesbecomemoreacidic．Acidwaterislikevinegarorlemonjuice．Ithurtswhenitgetsinyoureyes．Italsokillstheplantsandanimalsthatusuallyliveinlakewater．Thatiswhythefisharedyinginlakes．Butdeadfishmaybejustthebeginningoftheproblem．Scientists

6、arefindingothereffectsofacidrain．Insomelargeareastreesaredying．Notjustonetreehereandthere，butwholeforests．Atfirstscientistscouldn'tunderstandwhy．Therewerenobugsordiseasesinthesetrees．Theweatherwasnotdry．Butnowtheythinkthattherainwasthecause．Acidrainismakingt

7、heearthmoreacidicintheseareas．Somekindsoftreescannotliveinthesoilthatisveryacidic．Nowscientistsarealsobeginningtostudytheeffectsofacidrainonlargeranimals．Forexample，theybelievethatsomedeerinPolandarelesshealthybecauseofacidrain．Ifdeerarehurtbytherain，whatabo

8、utpeople？Thisisthequestionmanypeoplearebeginningtoask．Nooneknowstheansweryet．Butitisanimportantquestionforusall．46．Everyyearthousandsofspeciesofanimals_______．A．arehuntedfortheirmeatsandskinsB．m