Unit 4 Section Ⅳ Learning about Language & Using Language.doc

即时训练Ⅰ.单词拼写1．Thedrugiseffectivebuthasatendency(倾向)tocauseheadaches.2．Therewaswidespread(普遍的)supportforthewar.3．Onthewhole(大体上)Ithoughtthefilmwasprettygood.4．Theaverage(平均的)costofmakingamoviehasrisenby15%.5．Onbehalfof(代表……一方)everyoneheremayIwishyouaveryhappyretirement?6．Prisonerscanonlyleavetheircellsundercertaincircumstances(情况)．7．Herefreshed(使振作)himselfwithaglassoficedtea.8．Thefirewascausedbyanelectrical(与电有关的)fault.9．EinsteinwasawardedtheNobelPrizeforhiscontributions(贡献)toQuantumTheory.10．We'vehadafewdisagreements(分歧)butwe'restillgoodfriends.Ⅱ.单句语法填空1．Iamin________(disagree)withhimoverwhetherweshouldbuylargequantitiesoffuelsatatime.2．Thereisagrowing________(tend)towardshavingtwochildreninourcountry.3．Everyoneofuscanmakea________(contribute)toourclassifyoumakeaneffort.4．Whatthe________(educate)statedinhisreportisnotentirelyright.5．Ijustcan'tputupwithairandwater________(pollute)．6．Hemadea________(commit)tohimselfthathewouldnevershowanyprejudicetowardscleaningwomen.7．Breathinginsomefreshairinthemorningcan________(fresh)ourselves.8．Thereisnodoubtthateveryparentwouldliketoseetheirkid's________(grow)．9．Itisnotappropriatetowearso________(casual)onsuchaformaloccasion.10．Itisclearlystatedinthebookwhenthetraditioncameinto________(exist)．答案：1.disagreement2.tendency3.contribution4．educator5.pollution6.commitment7.refresh8.growth9.casually10.existenceⅢ.阅读理解Polarbearsaredyingout!Theyaredyingbecausetheyarelosingagreatdealofhabitatduetohumanincursion(侵入)andglobalwarming.Theyaredyingbecauseofstarvationaswell.Withtheseaicetheydependonforsurvivalshrinking(缩小)itisbecomingincreasinglydifficultforthemtofindfood.Anecosystemishighlydependentonallofitspartsandremovingevenasinglespeciescanresultinseriou