（课标通用）高考英语大一轮复习 Unit 4 Wildlife protection课时作业 新人教版必修2-新人教版高三必修2英语试题VIP专享VIP免费

Unit4WildlifeprotectionⅠ.阅读理解[2017·湖北八校联考]Researchersfoundthatwomenwhohadgivenbirthmighthaveareducedriskofdeathfromseveralcommonconditionsthanthosewhohadnot，accordingtoastudyreleasedFridaybytheImperialCollegeLondon(ICL)．Thestudy，ledbyICLresearchers，waspublishedinthejournalBMCMedicine.Itinvestigatestheassociationbetweenthesocalledreproductivefactors—suchashavingchildrenandbreastfeeding—andawoman'sriskofdeath.Researchersanalyzeddatafrom322,972womenacross10countries，includingtheUK，France，GermanyandSweden，withanaverageageof50.Eachwomanwasfollowedforanaverageof12.9years.Duringthisperiod，therewere14,383deathsoverall，whichincluded5,938deathsfromcancerand2,404deathsfromcirculatorysystemdiseases，accordingtothestudy.Theteamcomparedreproductivefactorswiththeriskofdeathfromseveralcommonconditions，suchasbreastcancer，strokesandheartdiseases.Theresearchersfoundthatwomenwhohadgivenbirthhada20percentreducedriskofdeaththanthosewhohadnot.Itwasalsofoundthattherewasareducedriskofdeath(8percent)inwomenwhohadbreastfedcomparedtothosewhohadnot.Theriskofdeathfromcancerwaslowerinthosewhohadgivenbirthcomparedtothosewhohadnot.Withinthisgroup，theriskwasreducedevenfurtherinwomenthatgavebirthtotwoorthreechildrenincomparisontothosewhohadonlyonechild.“Hormonalmechanismsmayexplainthelowerriskofdeaththatweobservedwithbreastfeeding，andhavinggivenbirth，asthesefactorsareassociatedwithchangesinhormonelevels”，saidDrMelissaMerrittfromICL，wholedthestudy.1．Accordingtothepassage，theriskofdeathfromcancerislowerinwomenwho________.A．havegivenbirthtonochildB．havegivenbirthtoonechildC．havegivenbirthtomorethanonechildD．havebreastfed2．Accordingtotheresearch，ifawomanhasgivenbirthandbreastfed，herriskofdeathwilldecreaseby________.A．20%B．28%C．12%D．16%3．Whichofthefollowingmightbeoneofthefindingsoftheresearch?A．Severalcommonconditionsleadtowomen'sdeath.B．Reproductivefactorsareassociatedwithchangesinhormonelevels.C．Womenwhohavegivenbirthlivelongerthanthosewhohavenot.D．Havingchildrenmightreducewomen'sriskofdeathfromsomediseases.答案：[解题导语]研究表明，和没生育过孩子的妇女相比，生育过孩子的妇女患病死亡的概率会大大降低。1．C“解析：细节理解题。根据倒数第二段中的theriskwasreducedevenfurtherinwomenthatgavebirthtotwoorthreechildrenincomparisontothosewhohadonlyonechild”可知，生育两个或三个孩子的妇女比只生育过一个孩子的妇女患癌症死亡的概率低。故选C项。2．B“解析：细节理解题。根据第六段Theresearchersfoundthatwomenwhohadgivenbirthhada20percentreducedriskofdeaththanthosewhohadnot.Itwasalsofoundthattherewasareducedriskofdeath(8percent)inwomenwhohadbreastfedcomparedtothosewhohadnot.”可知，生育并且哺乳过的妇女死亡的概率会下降28%(20%＋8%)。故选B项。3．D“解析：推理判断题。根据第一段中的Researchersfoundthatwomenwhohadgivenbirthmighthaveareducedriskofdeathfromseveralcommonconditionsthanthosewhohadnot”“和第五段中的suchasbreastcancer，strokesandheartdiseases”可推断出，生育孩子会降低女性患病死亡的概率。故选D项。Ⅱ.阅读填空[2017·黑龙江牡丹江一中期末]Asahealtheditor，Ispendthemajorityofmydayapplyingmymindtocontentsrelatedtohealth.We'reluckytotalktoexpertsonadailybasisabouthowtoliveourbestlives.__1__1．Haveabedtime.Gettingenoughsleepisgoodforeverythingrangingfromweighttomoodandeventheimmunesystem.Oneofthesimplestthingsyoucandotoensureyougetenoughsleepeachnightistosetabedtime.__2__2．Cultivat...