职称英语等级考试理工AB精讲班课程(12)第十二讲阅读判断

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1、职称英语等级考试理工AB精讲班课程第十二讲阅读判断>2008年职称英语词汇大纲新增内容（9）:2008年《职称英语等级考试大纲》上新增首字母为。的单词：C级offspringn.儿女（单复数同形）ancestorn.祖先，祖宗forefathern.祖先，祖宗（B级）generationn.产生，发生，一"代，一"代人（generationgap/代沟）onlineadj./adv.在线的（地）goonline上网surfonline网上冲浪chatonline网上聊天B级odorn.气味odor-smell-scent（B级）气味A级o

2、rnamentn.装饰decoratevt.装饰todecorateastreetwithcolorfulflags（彩旗）用彩旗装饰街道>阅读判断例题解析:TheNorthernLightsThesunisstormyandhasitownkindofweather.ItissohotandactivethateventheSun"sgravitycannotholditsatmosphereincheck!EnergyflowsawayfromtheSuntowardtheEarthinastreamofelectrifiedpart

3、iclesthatmoveatspeedsaroundami11ionmilesperhour.Theseparticlesarecalledplasma,andthestreamofplasmacomingfromtheSuniscalledthesolarThesolarwindprotectivemagneticcompasspointnorthwind.ThemoreactivetheSun,thestrongerthesolarwind,constantlystreamstowardtheEarth,butdon'tworryb

4、ecauseafieldssurroundsourplanet.ThesamemagneticfieldthatmakesyouralsosteerstheparticlesfromtheSuntothenorthandsouthpoles・getssqueezedandthenthecancauseatomicparticlessatmosphereatthepoles・ThechargedparticlesbecometrappedinmagneticbeltsaroundtheEarth・Whenalargeblastofsolar

5、windcrashesintotheEarth"smagneticfieldfirstmagneticfieldlinesbreakandreconnect.Thebreakingandroconncctingofthemagncticfieldlinescalledelectronstrappedinthebeltstofal1intotheEarth"AstheelectronsfallintotheEarth,theycollidewithgasmoleculesintheatmosphere,creatingflashesofli

6、ghtinthesky.Eachatmosphericgasglowsadifferentcolor.Oxygenandnitrogenglowsredandgreenandnitrogenglowsviolet-purple・Asthesevariouscolorsglowanddanceinthenightsky,theycreatetheNorthernLightsandtheSouthernLights.Watchingaurorasisfunandexciting,butnonuollyyoucanonlyseetheminpl

7、acesfarnorthlikeAlaskaandCanada.Themovementoftheauroraacrosstheskyisusuallyslowenoughtoeasilyfollowwithyoureyesbuttheycanalsopulsate,flicker,orevenmovelikewaves・Duringsolarmaximum,aurorasareseenasfarsouthasFlorida,evenMexico!Aurorasoftenseemtobeveryclosetotheground,butthe

8、lowestauroraisstillabout100kilometersabovetheground,adistaneemuchhigherthancloudsareformedorairp