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，itisthemostintelligentbutmostthoughtlessanimalthatiscausingmos

2、toftheproblems—man．Natureisverycarefullybalancedandifthisbalanceisdisturbed，animalscandisappearalarmingly（令人担忧地）fast．Everyday，thousandsofspeciesofanimalsdrawclosertoextinction．Therearecountlessnumberofspecieswhichmaybecomeextinctbeforetheyareevendiscovered．Inmanylakesth

3、efisharedying．Fishermenareworriedbecauseeveryyeartherearefewerfishandsomelakeshavenofishatall．Scientistsarebeginningtogetworriedtoo．Whatiskillingthefish？Theproblemisacidrain．Acidrainisakindofairpollution．Itiscausedbyfactoriesthatburncoaloroilorgas．Thesefactoriessendsmok

4、ehighintotheair．Thewindoftencarriesthesmokefarfromthefactories．Someoftheharmfulsubstancesinthesmokemaycomedownwiththerainhundredsofmilesaway．Theraininmanyplacesisn'tnaturalandcleananymore．It'sfullofacidchemicals．Whenitfallsinlakes，itchangesthemtoo．Thelakesbecomemoreacid

5、ic．Acidwaterislikevinegarorlemonjuice．Ithurtswhenitgetsinyoureyes．Italsokillstheplantsandanimalsthatusuallyliveinlakewater．Thatiswhythefisharedyinginlakes．Butdeadfishmaybejustthebeginningoftheproblem．Scientistsarefindingothereffectsofacidrain．Insomelargeareastreesaredyi

6、ng．Notjustonetreehereandthere，butwholeforests．Atfirstscientistscouldn'tunderstandwhy．Therewerenobugsordiseasesinthesetrees．Theweatherwasnotdry．Butnowtheythinkthattherainwasthecause．Acidrainismakingtheearthmoreacidicintheseareas．Somekindsoftreescannotliveinthesoilthatisv

7、eryacidic．Nowscientistsarealsobeginningtostudytheeffectsofacidrainonlargeranimals．Forexample，theybelievethatsomedeerinPolandarelesshealthybecauseofacidrain．Ifdeerarehurtbytherain，whataboutpeople？Thisisthequestionmanypeoplearebeginningtoask．Nooneknowstheansweryet．Butitis

8、animportantquestionforusall．46．Everyyearthousandsofspeciesofanimals_______．A．arehuntedfortheirmeatsandskinsB．m