湖北黄冈市高考英语阅读理解二轮精练50及解析答案

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1、湖北黄冈市2016高考英语阅读理解二轮精练(50)及(解析)答案[2016高考训练题】阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项。Aswitheveryotherinvasive（入侵的）species,introducingwormstoanecosystem（生态系统）thatdevelopedwithoutthemhasaneffectoneverythingthatlivesthere.ThisconcernisveryclearintheGreatLakesregion.Non——nativeearthworms（蚯蚓）havebe

2、eninNorthAmericaforacouplehundredyears,broughtoverfromEuropewithsoilsandplants・Morerecently,Asianspecies,soldasfishingbait（饵米斗）,havestartedtospreadintheGreatLakesregion,wheretherearenonativeearthworms.Intheseearthworm-freeforests,whenleavesfallontotheforestfloorandplantsandanimalsdie,th

3、eybuildupintowhat'scalledtheduff（丿禽殖丿贡）layer.Inthisarea,itwasjustbacteriathatbrokedowntheorganicmaterialforplantstoconsumeandtakeup.Earthwormscomein,theydotheirjobanddoitextremelywell—theytakethatforestfloorandturnitintotherichblacksoilyoufindinyourgarden.Thatsoundsgreat-butthelocalplan

4、tsandanimalsintheGreatLakesregionareusedtolivingwiththedufflayer,notintherichsoilassociatedwithearthworms・Inaddition,therichtopsoilleftbyearthwormscanwashoutinaheavyrain.Thedifferentlyproducedsoilisaproblemaswell・There'samatoffinerootsinthatdufflayer-that'swherealotofournativeplantsputt

5、heirrootsystem・Whenthatduffisgone,it'salotharderforthemtoputtheirrootsintothemineral（矿物质的）soil.1.Whatistheauthor'sattitudetowardstheworkofinvasiveearthworms?A.Supportive・B.Worried.C.Doubtful.D.Respectful.2.HowdoestheAsianspeciesaffecttheecosystemoftheGreatLakesRegion?A.Bychangingthesoil

6、・B.ByKillingthenativespecies・C.Byeatingthenativeplants.D.Byservingasfishingbait・3.Whatdoesthelastparagraphmainlytalkabout•A.Asianearthworms'workishelpfultotherootsofthenativeplants.B・Thenativeplantshavefinallyadaptedtotherichblacksoil・C.TheAsianearthwormscausedgreatproblemsforthelocalpl

7、ants.D.Thelocalplantsfinditeasytoputtheirrootsintothemineralsoil.本文讲述了作为鱼饵被引入到美洲五大湖区的亚洲蚯蚓由于改变了当地的土壤环境，而影响当地植物的生长，破坏了生态环境。1.B.从开头作者就谈到把蚯蚓引到一个无蚯蚓生态区会对生活在那里的万物产生彫响。第二段开头乂提到。这种担心在五人湖区是显而易见的。因此作者字里行间流露出对亚洲蚯蚓带来的生态影响的担心。2.A.从第三段对知，在没有蚯蚓的森林中，落叶和动物尸体会堆积成腐殖层，它们是由细菌來分解成可供给植物來吸收的成分的。蚯蚓到來后，