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1、高中英语阅读理解专题训练（广东专版每篇5小题）（第5套）第一节：阅读理解（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。A（words:323&235）Everywheremanisalteringthebalanceofnature．Heisfacilitatingthespreadofplantsandanimalsintonewregions,sometimesdeliberately,sometimesunconsciously．Heiscove
2、ringhugeareaswithnewkindsofplants,orwithhouses,factories,slag-heapsandotherproductsofhiscivilization．Heexterminatessomespeciesonalargescale,butfavorsthemultiplicationofothers．Inbrief,hehasdonemoreinfivethousandyearstoalterthebiologicalaspectoftheplanetthanhasnaturei
3、nfivemillion．Manyofthesechangeswhichhehasbroughtabouthavehadunforeseenconsequences．WhowouldhavethoughtthatthethrowingawayofapieceofCanadianwaterweedwouldhavecausedhalfthewaterwaysofBritaintobeblockedforadecade,orthattheprovisionofpotcactiforlonelysettlers’wiveswould
4、haveledtoEasternAustralianbeingoverrunwithforestsofPricklyPear?WhowouldhaveprophesiedthatthecuttingdownofforestsontheAdriaticcoasts,orinpartsofCentralAfrica,couldhavereducedthelandtoasemidesert,withtheverysoilwashedawayfromthebarerock?Whowouldhavethoughtthatimproved
5、communicationswouldhavechangedhistorybythespreadingofdisease-sleepingsicknessintoEastAfrica,measlesintoOceania,verypossiblymalariaintoancientGreece?Thesearespectacularexamples;butexamplesonasmallerscaleareeverywheretobefound．Wemakeanaturesanctuaryforrarebirds,prescr
6、ibingabsolutesecurityforallspecies;andwemayfindthatsomecommonandhardykindofbirdmultipliesbeyondmeasureandouststherarekindsinwhichwewereparticularlyinterested．Wesee,owingtosomelittlechangebroughtaboutbycivilization,thestarlingspreadovertheEnglishcountry-sideinhordes．
7、Weimprovethe8yieldingcapacitiesofourcattle;andfindthatnowtheyexhaustthepastureswhichsufficedforlessexigentstock．41．Thefollowingexamplesexcept_______________reflectmanalteringthebalanceofnature．A．maniscoveringhugeareaswithnewkindsofplantsB．manisfacilitatingthespreado
8、fanimalsintonewregions．C．maniskillingsomespeciesonalargescaleD．manisgettingtoknowtheimportanceofkeepingthebalanceofnature．42．Whathadapiece
