新人教版必修1高考英语一轮复习Unit4Earthquakes课时作业含解析 .doc

《新人教版必修1高考英语一轮复习Unit4Earthquakes课时作业含解析 .doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit4Earthquakes课时作业Ⅰ.阅读理解A(2019·邯郸模拟C)Haveyouevernoticedtinyraisedareasonthebranchesofatree？Thesemayhavebeeninsects.Thesesmallinsectsfeedontreesap(汁液)．Insectsonurbantreesarenotablymoreabundantthanthoseonruraltrees.Asaresult，urbantreessufferfromheavyinfestations(害虫横行)，andareo

2、ftenunhealthyordie.Toprotectandrestoreurbantrees'health，weneedtodeterminethefactorsthatmakethesetreepestsmoresuccessfulinurbanhabitats.Livingorganismsinteractcloselywiththeirenvironment.Thewarmer，moredrought－stressedtreesharbormoresuccessfulpeststhancooler，lessdrought－stresse

3、dtrees.Ascitiesandnaturalhabitatsbecomehotteranddrier，damaginginsectswillbecomemoreabundantonurbantrees.Treeswithinurbanforestsarevaluableeconomicallyandfortheenvironmentalsustainability(可持续性)oftheregion.Morethanhalfoftheworld'spopulationlivesincities.Acrosstheglobe，peopleare

4、movingintocitiesatafasterratethanever.Rapidgrowthmayturncitiesintoplaceswithharderconditions.Althoughcitiesareprimarilymadeofbuildings，roads，parkinglots，andvehicles，therearestillplantsinthem.Thetreeswithinacityarereferredtoastheurbanforest.Urbanforestsofferverybigbenefitstohu

5、manandenvironmentalhealth.Theyimproveairandwaterquality，providehabitatforwildlife，cooldowntemperaturesandbeautifyourenvironment.Theymakecitieslivable.However，beingacitytreeisnoteasy.Heatreleasedbyhumanactivitiesistrappedincities.Asaresult，temperaturesinurbanareasareoftenwarme

6、rthantheirsurroundingruralareas.Wecallthisurbanwarmingortheurbanheatislandeffect.Urbanhabitatsaremostlymadeofsurfacesofasphalt(沥青)andconcrete.Thesesurfacesreducetheamountofrainwaterthatreachestreeroots.Asaresult，urbanforestsmaysuffer，whichcannegativelyaffectpeopleandthe10envi

7、ronment.Whatcanwedotorestoreurbanforests？Regularirrigationwhenpossiblemayhelpkeeppestpopulationsundercontrol.Plantingtreespeciesthataresuitabletohandleheatanddroughtstresswouldalsoreducetheoccurrenceofinsectpestoutbreaks.【语篇解读】　本文主要介绍了城市中的森林使城市宜居，但是人类的活动对城市的树木产生了极大的影响，所以我们应该为

8、保护城市树木采取行动。1．Whatmakestreepestsmoresuccessfulinthecitythaninruralare