英语四级新闻听力知识分享

下面小编小编跟大家一起了解英语四级新闻听力知识分享，希望对大家的学习有所帮助。

听力练习

1.

A.Airpollutionmayaffecteveryorgan,cellinthebody.

B.Airpollutionmaybeeffectivelycontrolled.

C.Airpollutioniscausedbyhumanactivities.

D.Airpollutionmayalsobecausedbyindooractivities.

2.

A.Brainattacksattributesto24%ofdeathsworldwide

B.Thereportsaddthatairpollutionweakensbones,sotheybreakmoreeasily.

C.Airpollutionisamajorcontributortolungdisease.

D.Theresearchersfoundairpollutiontobeharmfultotheagingbrain.

听力文本

ManyinthescientificcommunitysaythatPM2.5canaffecteveryorganandeverycellinourbody.ResearchershavefoundthatPM2.5canevenpassthroughthebarrierthatprotectsourbrains.Theheartandbloodsystemisalsoaffected.TheWHOreportsthatairpollutioncauses24%ofdeathsfrombrainattackscalledstrokes.TheUNagencyaddsthat25%ofallheartdiseaseisfromairpollution.Scientistsstudythedamageairpollutiondoestoourbodies.Theywarnthatairpollutionaffectsmanysystemsinthebodyandisagreatrisktohealth.Itiswell-knownthatairpollutionisamajorcontributortolungdisease,butthisreviewalsoshowshowitcandamagemostotherorgansystemsofthebody."Theresearchersalsofoundairpollutiontobe"harmfultotheagingbrain."Theyreportedthatolderadultswithheavyexposuretoairpollutionperformedpoorlyontestsofbrainoperations.Theysaidthisgroupshowedanincreasedriskofdementiacomparedtoadultswithlessexposure.Thereportsaddthatairpollutionweakensbones,sotheybreakmoreeasily.Airpollutionalsoagesourskin,hurtsoureyesandinterfereswithsleep.Itaffectsthekidneys.Andtheresearcherssaidlivingnearbusyroadwaysmightleadtoliverdisease.

Question1:What’sthemainideaofthisnewsreport?

Question2:Accordingtothenewsreport,whichofthefollowingstatementsisnotcorrect?

重点词汇

1.barrier:alongpole,fence,wall,ornaturalfeature,suchasamountainorsea,thatstopspeoplefromgoingsomewhere隔栏；屏障；障碍物

2.exposure:thefactofexperiencingsomethingorbeingaffectedbyitbecauseofbeinginaparticularsituationorplace接触；面临；遭受

3.dementia;amedicalconditionthataffectsespeciallyoldpeople,causingthememoryandothermentalabilitiestograduallybecomeworse,andleadingtoconfusedbehaviour（尤指老年性）痴呆

4.interfere:toinvolveyourselfinasituationwhenyourinvolvementisnotwantedorisnothelpful干涉，干预

背景知识

细颗粒物又称细粒、细颗粒、PM2.5。细颗粒物指环境空气中空气动力学当量直径小于等于2.5微米的颗粒物。它能较长时间悬浮于空气中，其在空气中含量浓度越高，就代表空气污染越严重。虽然PM2.5只是地球大气成分中含量很少的组分，但它对空气质量和能见度等有重要的影响。与较粗的大气颗粒物相比，PM2.5粒径小，面积大，活性强，易附带有毒、有害物质（例如，重金属、微生物等），且在大气中的停留时间长、输送距离远，因而对人体健康和大气环境质量的影响更大。

参考答案

Question1:A

Question2:A