Unit 6 Starting out -Understanding ideas 强化练习- 高中英语外研版（2019）必修第二册

第9页（共9页）Unit6SectionAStartingout&Understandingideas一、单词拼写1.Whenyouareshootinganarrow,youmustaimatthet.

2.ThemainpurposeofhisholidaytoGreeceisthathecan(潜水)inthesea.

3.InAfrica,peoplehavedriventherhinototheedgeof(灭绝).

4.(幸好),theweatherthatwinterwasreasonablymild.

二、短语填空haveagreateffecton,infear,bymistake,see...as,becoveredwith1.Theboycameandtremblingtotellhisfatherhehadabadreportcard.

2.Themenlosttheirwayinasandstormandcrossedtheborder.

3.Asweknow,rainforeststheworldenvironment.

4.Doyouherapersonwhoislongingandgratefulforanewstart?

5.Twofifthsofthelandinthatdistricttreesandgrass.

三、阅读填句WhatIsParticulateMatter?Therearethingsfloatingaroundintheair.Mostofthem,youcannotevensee.Theyareakindofairpollutioncalledparticlesorparticulatematter.Infact,particulatemattermaybetheairpollutantthatmostcommonlyaffectspeople’shealth.HaveaLook.Particlescancomeinalmostanyshapeorsize,andcanbesolidparticlesorliquiddroplets.1Thesegroupsdifferinmanyways.Oneofthedifferencesissize.WecallthebiggerparticlesPM10andwecallthesmallerparticlesPM2.5.

BIG.Thebigparticlesarebetween2.5and10micrometers(fromabout25to100timesthinnerthanahumanhair).TheseparticlesarecalledPM10(wesay“PMten”,whichstandsforParticulateMatterupto10micrometersinsize).2

SMALL.Thesmallparticlesaresmallerthan2.5micrometers(100timesthinnerthanahumanhair).3Wesay“PMtwopointfive”,asinParticulateMatterupto2.5micrometersinsize.

Thesmallerparticlesarelighterandtheystayintheairlongerandtravelfarther.PM10(big)particlescanstayintheairforminutesorhourswhilePM2.5(small)particlescanstayintheairfordaysorweeks.Andtravel?4PM2.5particlesgoevenfarther—manyhundredsofmiles.

ParticulateMatterandYourHealth.BothPM10(big)andPM2.5(small)particlescancausehealthproblems,specificallyrespiratory(呼吸的)health.Whenyoubreathe,youtakeintheairalongwithanyparticlesthatareintheair,likeheavymetalsandcancer-causingorganiccompounds.5Exposuretoparticulatematterleadstoincreaseduseofmedicationandmorevisitstothedoctorortheemergencyroom.

A.TheseparticlesarecalledPM2.5.B.Wedivideparticlesintotwomajorgroups.C.Theseparticlescauselessseverehealtheffects.D.Airpollutionisagrowingprobleminthewholeworld.E.PM2.5canhaveworsehealtheffectsthanthebiggerPM10.F.PM10particlescantravelaslittleasahundredyardsorasmuchas30miles.G.Bothvisibleandinvisibleairpollutantshavegreateffectsonourenvironment,ourhealth,andthequalityofourlives.四、语法填空TheSilkRoadisinfacta1. (relative)recentterm.Theseancientroadshadnoparticularnameuntilthemid-nineteenthcentury;BaronFerdinandvonRichthoftennamedthetradeandcommunicationnetworktheSilkRoad.Sincethentheterm2.(accept)globally.

Inthenineteenthcentury,anewtypeoftravellerssteppedontotheSilkRoad:archaeologistsandgeographers,enthusiasticexplorerswhowereeager3.(look)foradventure.ResearcherswhocamefrommanycountriestravelledthroughtheTaklamakanDesert,4.isnowinXinjiang,toexploreancientsitesalongtheSilkRoad,5.(lead)tomanydiscoveriesandstudies,andmostofall,arenewedinterest6.thehistoryoftheseroutes.

Today,manyhistoric7.(build)andmonumentsstillstand,markingthepassageoftheSilkRoadthroughhotels,portsandcities.What’smore,thelong-standinglegacyofthis8.(impress)networkisreflectedinalargenumberofcultures,languages,customsandreligionsthathavedevelopedformanyyearsalongtheseroutes.Thepassageofmerchantsandtravellersofmanydifferentnationalitiesresultednotonlyincommercialexchange,9.inawidespreadandcontinualprocessofculturalinteraction.Obviously,it10.(become)adrivingforceintheformationofdiversesocieties.

一、单词拼写1.target2.dive3.extinction4.Fortunately二、短语填空1.infear2.bymistake3.haveagreateffecton4.see;as5.iscoveredwith三、阅读填句1.B。根据空格后面Thesegroupsdifferinmanyways.Oneofthedifferencesissize.WecallthebiggerparticlesPM10andwecallthesmallerparticlesPM2.5.可知,我们可以把这些颗粒分为thebigger和thesmaller两类。2.C。空格前提到了PM10的相关知识,后面理所当然应提到它对人类健康的影响,且在第一段就已经提到了颗粒物会对人类的健康造成影响,所以选C。3.A。根据上文Thesmallparticlesaresmallerthan2.5micrometers可知答案。4.F。空格前提到Andtravel?空格后面PM2.5particlesgoevenfarther—manyhundredsofmiles.综合可知,空格处应该提到PM10可以漂浮到多远。5.E。本段主要讲颗粒物对人类健康造成影响,根据前面两段对PM10和PM2.5的介绍以及后文(暴露于颗粒物会导致更多的药物使用和更多的就诊医生或急诊室。)可知PM2.5对健康的影响比PM10更严重;故选E。四、语法填空1.relatively考查副词。修饰形容词recent,用副词,所以填relatively。2.hasbeenaccepted考查时态语态。由Sincethen可判断出用现在完成时,且theterm与accept之间是逻辑上的被动关系,所以用现在完成时的被动语态。3.tolook考查非谓语动词。beeagertodosth“渴望做某事”。4.which考查定语从句。此处是一个非限制性定语从句,关系词在从句中作主语,指物,所以填which。5.leading考查非谓语动词。lead与其