高考英语第一轮复习提能训练试题2

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1、【译林湖南版创新设计】高考英语一轮复习提能训练Module1Unit2　GrowingpainsⅠ.填词Hairisoneofthecommonestpartsofthebodyandsomethingthatisgivenalotofattention.You’vehaditsincebirthandyoutakecareofiteveryday.Buthowmuchdoyouknowaboutyourhair?Theaverageheadofhairismadeupof100strands(根)，eachofwhichhasalifeexpectancyo

2、faboutthreeyears.Whilesomehairsaregrowing，othersareresting，andothersarefallingout.Ahairismadeupoftwoparts：theshaft(发丝)andtheroot.Theshaftisavisible(or：seen)part.Ithasacomplexstructure.Therootisthelivingpartofthehair.Itisherewherecellsdevelopandformtheshaft.Italsohasaverycomplexstruc

3、ture.Everydayanormalheadofabout100hairswilllosebetween50and100hairs—or30,000hairsperyear.Hairdies，fallsout，andgrowsagain.Thelifecycleismadeupofthreestages.First，alongandactivegrowthperiodthatlastsaboutthreeyears—thehairgrows.Second，averyshorttransition(过渡)periodthatlastsaboutthreewe

4、eks，duringwhichtimethehairisinactive—thehairfollicleshrinks.Third，arestingperiodofaboutthreemonths—attheendofthisperiodthehairispushedoutandlost.Thiscyclerunsconstantlythroughoutlife.Ahairgrowsfrom1to1.5cmeachmonthanditsusuallifeexpectancyisaboutthreeyears.Soverylonghairisrarelyseen

5、.However，therearesomepeoplewhodogrowlonghair.Themostcommonformofhairlossdoesnotcomefromdisease.Infactwecanalmostsayitisasecondarysexualcharacteristic.Itiscalledandrogeneticalopecia(alsoknownaspatternbaldness)andresultsfromacombinationofgeneticandhormonal(荷尔蒙的)factors.Therearetwosort

6、sofmelanin(黑色素)presentinalltypesofhair，indifferentproportions.Thesemakeitpossibletogetthedifferentshadesofcolor—blonde(orgolden)，brownorred.Title：__1__Ⅱ.简答题Somescientistssaythattheworld’soceansareslowlygettingmoreacidic(酸)．AccordingtotheresearchersfromCalifornia，thechangeistakingpla

7、ceduetohigherlevelsofcarbondioxide(二氧化碳)intheair，whetheryounoticeditornot.Theloweringofthewater’sPHvalueisnotgreatatthemomentbutcouldmakethelivingthingsintheseaingreatdangerifitcontinues，theywarn.KenCaldeiraandMichaelWickett，fromtheLawrenceLivermoreNationalLaboratory，reporttheirworr

8、iesinthejournalNatu