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UNIT1Strangers1.Thestrangerlookedatmeskepticallyforafewminutesandthendroveawayfromtheparkinglotwithoutaword.2.Thoughshe'sstudiedinaforeignlanguageuniversityforseveralyears,sheisastrangerFrench.3.Thelittleboyfeltstrangeamidsomanyforeignchildren.4.ItseemsoddthatJohncouldaffordanewBMW,forhewaslaidofffromhisjobayearago.5.Shewasverycuriousaboutthewayhecountedthevotesaftertheelectionforschoolpresident.6.MycuriosityaswellasangerroseasIwatchedhimflipthroughthelettersonmydeskinhisnosyway.7.Itisquiteindifferenttomewhetheryouagreeordisagreewiththeargumentthatmenarebornevil.8.It'squeerindeedthatastrangerofferedmeacupofteawhenIwasthirstyonthetrainduringthejourney.9.Thenewregulationsimposedbythepoliceareveryunusualanditwilltaketimetogetusedtothem.10.Thatnewspaperisnotoriousforgivingbiasedaccounts.11.Theoldladyalwayssleptunderthebedwithherclotheson,andthiseccentrichabitofhersactuallysavedherlifewhenanearthquakestruckabruptlyonenight.12.Toomanypeople,especiallyyoungpeople,liketousescreennamestochatonline.13.Thoughyoucannottellhowoldyourpal(伙伴)inanInternetroomis,moreoftenthannotyoucantellwhetherthechatterisamaleorafemale.14.Talkativepersonsaredangerous,fortheyhavenosecretsaboutthemselvesandkeepnosecretsofothers.15.Ilikeeasy-goingpeopleandfeelrelaxedwhentalkingtothem.Themonitor,forexample,actsandthinksinoneandthesameway.16.Speechissilver,butsilenceisgold.17.Facialexpressionsareveryimportant.Wesometimescantellfromthewayastrangertalkswhetherheorsheistrustworthyornot.18.InstantMessaging(即时信息),orIM,isanewphenomenonthathasrapidlygrowninpopularityaroundtheworldinjustafewyears.SomeexpertsnowbelievethatIMmaybeoneofthemostpopularcomputerapplicationsever.19.IRC,orInternetRelayChatting,hasbecomeverypopularityontheWorldWideWeb,foritenablespeoplefromdifferentpartoftheworldtotalktoeachotherviatheInternet.20.MSNisacollectionofInternetsitesandservicesprovidedbyMicrosoft.MicrosoftusedtheMSNbrandnametopromotenumerouspopularWeb-basedservicesinthelate1990s,mostnotablyHotmailandMessenger,beforereorganizingmanyofthemin2005underanotherbrandname,WindowsLive.SomeoftheMSNservicesaffectedbytherebrandingincludedMSNHotmail,whichbecameWindowsLiveHotmail;MSNMessenger,whichbecameWindowsLiveMessenger;MSNSearch,whichbecameLiveSearch,nowknownasBing.？QQisapopularinstantmessagingsystemthatiscommonlyusedinChinaandtheAsia-Pacific.Itenablesreal-timecommunicationbetweenPCs,mobilephonesandpagers.PerhapsitisoneofthebestwaystodevelopcontactinChina.21.TencentQQ,generallyreferredtoasQQ,isthemostpopularfreeinstantmessagingcomputerprograminmainlandChina.Itenablesreal-timecommunicationbetweenPCs,mobilephonesandpagers.ThenumberofsimultaneousonlineQQusersexceeded100milliononMarch5,2010.？ItisreportedthatthenumberofregisteredQQusersinChinahasexceeded7million.OnFebruary18th,2003alone,thenumberofQQusersonlinewas295063.22.SkypeisapopularchattingprogramontheInternet.TheSkypecommunicationssystemisnotableforitsbroadrangeoffeatures,includingfreevoiceandvideoconferencing,itsabilitytousepeertopeertechnology(点对点网络技术)toovercomecommonfirewall(防火墙)andnetworkaddresstranslationproblems.？MobileQQisaservicethatseamlesslyallowsthecustomer’sPC-basedinstantmessagingservicetobecomeintegratedwithhisorhermobilephone,allowingthecustomertostayintouchwithPC-ormobile-basedcontactsfromjustaboutanywhere.UNIT2UFOs1.UFOstandsforUnidentifiedFlyingObject.SomepeoplealsocallUFOsflyingsaucers,becausetheirshapeslooklikesaucers.2.Initsbroadersense,theUFOincludesanyobjectorlight,reportedlysightedinthesky,thatcannotbeimmediatelyexplainedbytheobserver.3.Irememberasachild,IwouldsaveeverypennymymothergavemetobuythelatestUFOmagazinesfromthegrocerystore.4.WecannotdenytheexistenceoftheUFOphenomenonsimplybecausewehavenotseenitorcannotexplainit.5.Sciencehasitslimitationsandmanymysteriesthroughouttheworldhaveremainedunsolved.6.Sightingsofunusualaerialphenomenadatebacktoancienttimes.7.Theearlycavepaintingsandancientscriptures(经文)seemtoindicatethatwemayhavehadvisitorsfromotherworldsorplanetsinthepast.8.Infact,ancientscripturesfrommanydifferentcultureswouldgiveustheimpressionthatwe'vehadvisitorsfromouterspace.9.Howdoyouexplainancienttalesofchariots(战车)fromthesky?Andwhataretheflyingshipsappearinginsciencefictionnovelsbeforethefirstplanewaseverthoughtabout?10.EventheBiblehasbeensuggestedaspossibleevidenceofaliencontact,foritsnumerousaccountsofobjectsinthesky,andotherstrangeevents.11.WhatsecretsliewithancientEgypt,Stonehenge(Salisbury),orpossiblyevenAtlantis?Havethereindeedbeenmoreadvancedcivilizationsofmanthathavesomehowbeenlost?12.SomeUFOenthusiastsevenclaimtohavebeenabductedandtakenaboardUFOs.Butsofar,noonehasproducedscientificallyacceptableproofoftheseclaims.13.SomepeoplebelievethatUFOsareextraterrestrialspacecraft,eventhoughnoscientificallyvalidevidencesupportsthatbelief.14.Scientistsspeculatethatintelligentlifemaywellexistelsewhereintheuniverse.15.InadditiontomanyreportsandsightingsofUFOs,observershaveprovidedphotographsorevenvideos.16.UFOsbecamewidelydiscussedonlyafterthefirstwidelypublicizedUSsightingin1947.Manythousandsof