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New Product Will Save Lives Drinking water that looks clean may still contain bugs(虫子)。which Ca...
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NewProductWillSaveLivesDrinkingwaterthatlooksclean
A． Right
B．Wrong
C．Not mentioned
Tosavepeople’slivesisthedoctorduty.
Scientistswillinventmoreamazingmaterialstosaveour
I'veneverknownthatitcan savelives.
Intimeofseriousaccidents________weknowsomebasicthi
whether
until
if
unless
Thismedicinemillionsofpeople'slivessinceitwasputin
is saving
will save
has saved
hadsaved
NewProductWillSaveLives??Drinkingwaterthatlookscle
A． Right
B．Wrong
C．Not mentioned
Thismedicinesavemillionsofpeople'slivessinceitwasp
Thosebraverescuerteammembersmanagedtosavemanypeopl
at
for
above
under
Carseatbeltssavelives.Everydriver________wearoneto
should
can
may
might
Thedoctorsaretryingtosavethe病人的lives.
NewProductWillSavelivesDrinkingwaterthatlooksclean
Right
Wrong
Not mentioned
1.00分Tosavetheirlivesthecaptainorderedthesoldiers
It'sthedoctors'tohelpthesickandsavepeople'slives.
I'veneverknownthatitcansavelives.
NewProductWillSaveLivesDrinkingwaterthatlooksclean
A． Right
B．Wrong
C．Not mentioned
NewProductWillSaveLives Drinkingwaterthatlookscle
Right
Wrong
Not mentioned
Seatbeltssaveliveshasbeenproveninstudyafterstudy.
Whether
What
That
If
Aftertheinjuredtothehospitaldoctorsandnursesimmedi
was rushed; save
were rushed; saving
rushed; saving
rushed; save
Thelastparagraphismainlyabout______.
the cost of advertising a product
the effect of advertisement on people' s lives
the benefits advertisement brings
various media for advertising products
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27．WhenyourchildasksyouquestionsyoushouldgiVeher_______． 28．WesetupexperimentstotestOtlrideasabout_______． 29．Intheexperimentoneend0fthestringwasattachedt0_______． 30．‘rheexperimentshowsthatsaltchangesthebehaViour0f_______．
RecyclingAroundtheWorld Reeyclingisone0fthebesteNVironmeutal8ucee88stories0ftllelate20theentury．ButwecoulddomoEe．Peoplemustnotseerecyclingasfashionablebutessential． TheJapaneseltreverygoodatrecyclingbecausetheyliveinacrowdedcountryTheydonothavemuchspace．Theydonotwantt0sharetheir1imitedspacewithrubbishButeVeNsoToky0areaaloneisestimatedtohavethreemilliontonsofle~overmbbishatpEesent． In1996tlleunitedStatesleeycledandcomposted制成肥料57millionton80fwaste27％ofthenation’ss801idwaste．Thisis57milliontonsofwastewhichdidnotg0intolaJldfillsandincinerators焚化炉．Indoingt11is7000mbbishcoNectionprogrammesfltndrecyclingcen~e8helpedtlleauthorities． InRockfordacityinⅡIiNOisUSitsoffieialschooseonehouseeachweekandcheckitsgarbage废物．Ifthegarbagedoesnoteontainallnewspapersoraluminium铝earlsthenlheresident0ftllehOUSegetsaprizeofatleast$1000． InJapancertaincitiesgivechildtenweekly8uPPliesoftissuepaperfilldtoiletpaperinexchfillgeforaweeklycollection0fnewspapers． InoneyefllBritainrecycles ．1outofevery3newspapeI’S． ．1out0fevery4glassbotflesandjars罐子． ．1outofevery4itoms0fc10tlling． ．1out0fevery3aluminiumdrinkcans． In1999H0ngKongtmnsported1．3miUiontons0fwastet0mailllfilldChinaforrecycling．Aroand535000tons0fwastewererecycledinHONgKongitselfovethalfthethingswethrowawayconldberecycled．ThatmeansweconldrecycIelOtimesasmuchaswed0now． HoweverrecyclingneedsalotoforganisationaJldspecialequipment．Alsothereisnotmachuseforsomerecycledmaterial． HowmachwastedidtheUSrecyclein1996?
TooLatetoRegretIt WhenIwasajuniorImetasecond-yearstudentinmydepartment.Hewasn’ttallorgood-lookingbuthewasveryniceattractiveandathletic.HehadsomethingthatIadmiredverymuch.Hewasnaturalwarmandsincere. Idisregarded不顾myparents’disapproval.Wewereveryhappytogether.Hepickedmeupfrommydormeverymorningandafterclasswewouldsitalongsidethestreamthatranthroughcampusorsunbathe晒太阳onthelawn.Atnighthewouldwalkmebacktomydorm.Hecamefromapoorfamilybutinordertomakemehappyheborrowedmoneyfromhisfriendtobuypresentsandmealsforme.Ourfellowstudentslookeduptohimasarolemodelandthegirlsenvied妒忌me.Hewasn’talocalbutwantedtostayhereaftergraduation.Ithoughtwehadafuturetogether. HoweverwhenIgotapart-timejobduringthesummervacationpeoplebegangivingmealotofpressuresayingthataprettyintelligentgirllikemeshouldfindabetterguytospendtimewith.Thiswasalsowhatmyfamilythought.HespentthesummerinhishometownsoIwasallbymyself.WhenhegotbackIbeganfindingfaultwithhim.Buthisbigheartandwarmthsoondroveallunpleasantthoughtsaway.HoweverIhadnoideahowbadlyIhadhurthimandthatthingswouldgetworse. Ihadagoodpart-timejoboffcampusthatpaidprettywell.WithmygoodperformanceatschoolIalsogotadmissiontograduateschoolatoneofChina’sbestuniversities.Heontheotherhanddidnotdosowellatschooloratwork.Ihadtoworryabouthislivingexpensesjobandscores. Almostallmycolleaguesandfriendsadvisedmetobreakupwithhim.ThenwehadaquarrellastJune~Hewasingreatpainandmycoldwordsandbadmoodsstartedturninghimaway. Graduationtimewasdrawingnearandhesaidhewantedtogobacktohishometown.Hesaidthathecouldn’tputupwithmeanymore.Iwasshockedandlookedathimindespair. TruelovehappensonlyoncebutIfounditouttoolate. Whoadvisedhertobreakupwithhim?
I'mwotkingwitha{{U}}guy{{/U}}fromLondon．
{{U}}Practically{{/U}}allanimalscommunicateeitherthroughsoundsorthroughsoundlesscodes．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
TheClockThatWakeYozfWhenYouAreReady Areyouatealgrump脾气坏的人inthemOITIings?DoyouwakeupeverydayfeelingtiredangryaJldup8etandalltooreadytoflittheSnooze瞌睡button?IfsothenanewalarnlclockCOilldbejustforyou．Thec10ckcalledS1eepSmartmeasuresyoursleepcycleandwaitsforyout0beinyourlightestphaseofsleepbeforewakingyouupItsmakerssaythatshouldensureyouwakeupfeelingrefreshed恢复精力everymoiTling． AsyousleepyoupaSSthroughasequenceofaleepstates—lightsleepdeepsleepandREMsleep快速眼动睡眼一thatrepeatsapproximatelyevery90minutes．ThepointsinthatcycleatwhichyouwakeearaffecthOWyoufeellateraJldmayevenhaveagreaterimpactth．衄hOW10ngorlittleyouhaveslept．Beingwakenedduringalightphasemeansyouaremore1ikelyt0wakeupcheeffulandfull0flifeandinterest． SleepSmartrecordsthedistinctpattern0fbminwavespmdueedduringeachphaseofsleepViaaheadbaJldequippedwithelectrodes电极andamieroprocessor．ThismeasureselectricactiVityoftheweare’sbrainandeommunicateswirelesslywithaclockunitnearthebed．YouprogramtheclockwiththelatesttimeatwhichvouWalltt0bewakenedanditthenatthepIDpertimewakesyouduringthe1astlightsleepphasebeforethat． Theconceptwasinventedbyagroup0fstudentsatBrownUniversl‘tyinRhodeIslandafterafriendcomplained0fwakinguptiredandperformingp00dyonatestAssleep—depriVed剥夺peopleourselveswestartedthinkingofwhatt0doaboutit’’saysEricShashouaarecentcoUegegraduateandnowchiefexecutiveofficer0fAxonSleepResearchLaboratoriesacompanycreatedbythestudentstodeveloptheiridea．Theyhavealmostfinishedaprototypeandplantomarkettheproductbynextyeat Asyousleeptheheadband．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
I'dverymuchliketoknowwhatyour{{U}}aim{{/U}}inlifeis
MindThoseManners0ntheSubway SothereyouarejustsittingthereinthesubwayCarenjoyingthatbookyoujustbut_____46Orthepersonsittingnextt0youtakesoutanailclipper指甲刀andbeginscuttinghis0Thernails．AnnoyingMany0fushavetospendsometimeeveryday0npublictransportation_____47Sotomakethetripmorepleasant．wesuggestthefollowingLetpassengersgetoffthebus0TsubwayCarbeforeyoucanget0n_____48StandawayfromthedoorswhentheyareclosingDon’ttalkloudlyonabusoTsubway．Chattingloudlywithyourfriendscanbeannoyingt0others_____49Don’tthinkyourbagsandsuitcases手提箱deserveaseat0ftheirown．Useatissuewheneveryoucough0rsneeze打喷嚏．Anuncoveredsneezecanspreadgerms细菌especiallyincrowdedplaces．Don’tcutyournails0rpickyournoseonpublictransportation．Don’treadoverotherpeople’sshoulder_____50Itcanmakepeopleuncomfortable．Theymightthinkyou’retoostingy小气的event0buyanewspaper．0rtheymightthinkyou’rejudgingtheirbehavior．
TheClockThatWakeYozfWhenYouAreReady Areyouatealgrump脾气坏的人inthemOITIings?DoyouwakeupeverydayfeelingtiredangryaJldup8etandalltooreadytoflittheSnooze瞌睡button?IfsothenanewalarnlclockCOilldbejustforyou．Thec10ckcalledS1eepSmartmeasuresyoursleepcycleandwaitsforyout0beinyourlightestphaseofsleepbeforewakingyouupItsmakerssaythatshouldensureyouwakeupfeelingrefreshed恢复精力everymoiTling． AsyousleepyoupaSSthroughasequenceofaleepstates—lightsleepdeepsleepandREMsleep快速眼动睡眼一thatrepeatsapproximatelyevery90minutes．ThepointsinthatcycleatwhichyouwakeearaffecthOWyoufeellateraJldmayevenhaveagreaterimpactth．衄hOW10ngorlittleyouhaveslept．Beingwakenedduringalightphasemeansyouaremore1ikelyt0wakeupcheeffulandfull0flifeandinterest． SleepSmartrecordsthedistinctpattern0fbminwavespmdueedduringeachphaseofsleepViaaheadbaJldequippedwithelectrodes电极andamieroprocessor．ThismeasureselectricactiVityoftheweare’sbrainandeommunicateswirelesslywithaclockunitnearthebed．YouprogramtheclockwiththelatesttimeatwhichvouWalltt0bewakenedanditthenatthepIDpertimewakesyouduringthe1astlightsleepphasebeforethat． Theconceptwasinventedbyagroup0fstudentsatBrownUniversl‘tyinRhodeIslandafterafriendcomplained0fwakinguptiredandperformingp00dyonatestAssleep—depriVed剥夺peopleourselveswestartedthinkingofwhatt0doaboutit’’saysEricShashouaarecentcoUegegraduateandnowchiefexecutiveofficer0fAxonSleepResearchLaboratoriesacompanycreatedbythestudentstodeveloptheiridea．Theyhavealmostfinishedaprototypeandplantomarkettheproductbynextyeat Theideaofmakingsuehaclockwasdevelopedbyagroupof．
Wouldyouplease{{U}}call{{/U}}myhusbandaSsoonaspossible?
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
Thechairman{{U}}proposed{{/U}}thatwestopthemeeting．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
TooLatetoRegretIt WhenIwasajuniorImetasecond-yearstudentinmydepartment.Hewasn’ttallorgood-lookingbuthewasveryniceattractiveandathletic.HehadsomethingthatIadmiredverymuch.Hewasnaturalwarmandsincere. Idisregarded不顾myparents’disapproval.Wewereveryhappytogether.Hepickedmeupfrommydormeverymorningandafterclasswewouldsitalongsidethestreamthatranthroughcampusorsunbathe晒太阳onthelawn.Atnighthewouldwalkmebacktomydorm.Hecamefromapoorfamilybutinordertomakemehappyheborrowedmoneyfromhisfriendtobuypresentsandmealsforme.Ourfellowstudentslookeduptohimasarolemodelandthegirlsenvied妒忌me.Hewasn’talocalbutwantedtostayhereaftergraduation.Ithoughtwehadafuturetogether. HoweverwhenIgotapart-timejobduringthesummervacationpeoplebegangivingmealotofpressuresayingthataprettyintelligentgirllikemeshouldfindabetterguytospendtimewith.Thiswasalsowhatmyfamilythought.HespentthesummerinhishometownsoIwasallbymyself.WhenhegotbackIbeganfindingfaultwithhim.Buthisbigheartandwarmthsoondroveallunpleasantthoughtsaway.HoweverIhadnoideahowbadlyIhadhurthimandthatthingswouldgetworse. Ihadagoodpart-timejoboffcampusthatpaidprettywell.WithmygoodperformanceatschoolIalsogotadmissiontograduateschoolatoneofChina’sbestuniversities.Heontheotherhanddidnotdosowellatschooloratwork.Ihadtoworryabouthislivingexpensesjobandscores. Almostallmycolleaguesandfriendsadvisedmetobreakupwithhim.ThenwehadaquarrellastJune~Hewasingreatpainandmycoldwordsandbadmoodsstartedturninghimaway. Graduationtimewasdrawingnearandhesaidhewantedtogobacktohishometown.Hesaidthathecouldn’tputupwithmeanymore.Iwasshockedandlookedathimindespair. TruelovehappensonlyoncebutIfounditouttoolate. Whendidtheauthorfallinlovewiththeboy?
27．WhenyourchildasksyouquestionsyoushouldgiVeher_______． 28．WesetupexperimentstotestOtlrideasabout_______． 29．Intheexperimentoneend0fthestringwasattachedt0_______． 30．‘rheexperimentshowsthatsaltchangesthebehaViour0f_______．
ThereisalwaysexcitementattheOlympicGameswhenanathlete{{U}}breaks{{/U}}arecord．
{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ??????? ??????????? ?????????{{B}}Radiocarbon Dating{{/B}}??Nowadaysscientistscananswermanyquestionsabout thepastthroughatechniquecalledradiocarbon放射性碳orcarbon-14dating.One keytounderstandinghowandwhysomethinghappenedistodiscoverwhenit happened.??Radiocarbondatingwasdevelopedinthelate1940sby physicistWillardF.LibbyattheUniversityofChicago.Anatomofordinary carboncalledcarbon-12hassixprotons质子andsixneutrons中子inits nucleus原子核.Carbon-14orC-14isaradioactiveunstableformofcarbonthat hastwoextraneutrons.?Itreturnstoamorestableformofcarbonthrough aprocesscalleddecay衰减.Thisprocessinvolves?thelossoftheextra neutronsandenergyfromthenucleus.??InLibby’sradiocarbon datingtechniquetheweakradioactiveemissions放射fromthisdecayorocessare countedbyinstrumentssuchasaradiationdetectorandcounter.Thedecayrate isusedtodetermine?theproportionofC-14atomsinthesamplebeing dated.??Carbon-14isproducedintheEarth’satmospherewhen nitrogen氮-14orN-14interactswithcosmic?rays宇宙射线.Scientists believesincetheEarthwasformedtheamountofnitrogenintheatmosphere ?hasremainedconstant.ConsequentlyC-14formationisthoughttooccurat aconstantrate.NowtheratioofC-14toothercarbonatomsintheatmosphere isknown.Mostscientistsagreethatthisratioisusefulfordatingitemsback toatleast50000years.??AlllifeonEarthismadeoforganic molecules分子thatcontaincarbonatomscomingfromtheatmosphere.Soallliving thingshaveaboutthesameratioofC-14atomstoothercarbonatomsintheir tissues组织.?Onceanorganism有机体diesitstopstakingincarboninany formandtheC-14alreadypresentbeginstodecay.OvertimetheamountofC-14 inthematerialdecreasesandtheratioofC-14toothercarbonatomsgoes down.IntermsofradiocarbondatingthefewerC-14atomsinasampletheolder thatsampleis.Theradiocarbondatingtechniqueisonlyabout40yearsold.
MindThoseManners0ntheSubway SothereyouarejustsittingthereinthesubwayCarenjoyingthatbookyoujustbut_____46Orthepersonsittingnextt0youtakesoutanailclipper指甲刀andbeginscuttinghis0Thernails．AnnoyingMany0fushavetospendsometimeeveryday0npublictransportation_____47Sotomakethetripmorepleasant．wesuggestthefollowingLetpassengersgetoffthebus0TsubwayCarbeforeyoucanget0n_____48StandawayfromthedoorswhentheyareclosingDon’ttalkloudlyonabusoTsubway．Chattingloudlywithyourfriendscanbeannoyingt0others_____49Don’tthinkyourbagsandsuitcases手提箱deserveaseat0ftheirown．Useatissuewheneveryoucough0rsneeze打喷嚏．Anuncoveredsneezecanspreadgerms细菌especiallyincrowdedplaces．Don’tcutyournails0rpickyournoseonpublictransportation．Don’treadoverotherpeople’sshoulder_____50Itcanmakepeopleuncomfortable．Theymightthinkyou’retoostingy小气的event0buyanewspaper．0rtheymightthinkyou’rejudgingtheirbehavior．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ??????? ??????????? ?????????{{B}}Radiocarbon Dating{{/B}}??Nowadaysscientistscananswermanyquestionsabout thepastthroughatechniquecalledradiocarbon放射性碳orcarbon-14dating.One keytounderstandinghowandwhysomethinghappenedistodiscoverwhenit happened.??Radiocarbondatingwasdevelopedinthelate1940sby physicistWillardF.LibbyattheUniversityofChicago.Anatomofordinary carboncalledcarbon-12hassixprotons质子andsixneutrons中子inits nucleus原子核.Carbon-14orC-14isaradioactiveunstableformofcarbonthat hastwoextraneutrons.?Itreturnstoamorestableformofcarbonthrough aprocesscalleddecay衰减.Thisprocessinvolves?thelossoftheextra neutronsandenergyfromthenucleus.??InLibby’sradiocarbon datingtechniquetheweakradioactiveemissions放射fromthisdecayorocessare countedbyinstrumentssuchasaradiationdetectorandcounter.Thedecayrate isusedtodetermine?theproportionofC-14atomsinthesamplebeing dated.??Carbon-14isproducedintheEarth’satmospherewhen nitrogen氮-14orN-14interactswithcosmic?rays宇宙射线.Scientists believesincetheEarthwasformedtheamountofnitrogenintheatmosphere ?hasremainedconstant.ConsequentlyC-14formationisthoughttooccurat aconstantrate.NowtheratioofC-14toothercarbonatomsintheatmosphere isknown.Mostscientistsagreethatthisratioisusefulfordatingitemsback toatleast50000years.??AlllifeonEarthismadeoforganic molecules分子thatcontaincarbonatomscomingfromtheatmosphere.Soallliving thingshaveaboutthesameratioofC-14atomstoothercarbonatomsintheir tissues组织.?Onceanorganism有机体diesitstopstakingincarboninany formandtheC-14alreadypresentbeginstodecay.OvertimetheamountofC-14 inthematerialdecreasesandtheratioofC-14toothercarbonatomsgoes down.IntermsofradiocarbondatingthefewerC-14atomsinasampletheolder thatsampleis.Radarisusedtodeterminethecharacteristicsofradiocarbon.
TeachYourChildScience 1．ItisimportanttmakeyuTchildl‘nterestedinsciencefromanearlyage．M0styoungchildrenaska10tofquestionsandyoushouldgivecarefulscientificanswers．Don’tonlygiVefactsbuttryt0glveexplana-tionsaswell． 2．Scienceisnotiustknowledgeitisaway0fthinkingamethod0ffinding0utabouttheworld.Weseesomething．Wetrytoexplainitandwetestourideabyseitingupallexpefimem．Onedayyoucomehomeandfindtheplant0nthetablehasfallenover．Y0uthinkitmightbethewindfromtheopenwindOW0rthecat．sovouclosethewindowbutlcavethecatinandseewhath印pensyoucanalsotryleavlngthewindowopenandshuningthecatout．Ofcourseyouremembertheremaybeathirdexplanation． 3．AskvourchildtgeIapiecefstringsomesaltaglass0fwaterandanicecube冰块．TellhertoDuttheiceinthewaterandthenputoneend0fthestringontheiceleavingthe0therendovertheside0fthedass．Putalimesaltontheice．waitaminuteandthenpullthestringitsh叫ldbeattachedtoeice．Askthechildwhathashappelled． 4．Probablyshewon’tkIlOW．Askherwhetherfreshwater0rsaltwaterfreezesint0icefirst．Ifvouliveneartheseaandhaveacoldwintersheshouldknowfreshwaterfreezesfirstasshewillhaveseenthathad．pen-Showherhowtotesttheideabyhalf—fillingtWOpapercupswithwateraddingsaltt0oile．Thenputthemintheiceboxandcheckeverythteeminutes．WritetheYesllltsinatable．TheconelusionwillbethatsaltchangesthebehaViourofwater．r11hinkingaboutthestringweseethesaltturnedsome0ftheiceintowater．Thenthesaltwentawayintothewaterandtheicefrozeagainleavingthestringattached． 5．ThenyoucanaskWillwaterwittlsaltboilatthesamekmperatureaswaterwitlloutsalt’’SheCallthinktellyouherideaandtakingcarebeeauseoftheheatyoucantestitinthekitchen． 23．Paragrapg1_______． 24．Paragraph2_______． 25．Paragraph3_______． 26．Paragraph4_______．
Thegreatchangeofthecity{{U}}astonished{{/U}}allthevisitors．
Thecourageousboyhasbeenthesubjectof{{U}}massive{{/U}}mediacoverage．
RecyclingAroundtheWorld Reeyclingisone0fthebesteNVironmeutal8ucee88stories0ftllelate20theentury．ButwecoulddomoEe．Peoplemustnotseerecyclingasfashionablebutessential． TheJapaneseltreverygoodatrecyclingbecausetheyliveinacrowdedcountryTheydonothavemuchspace．Theydonotwantt0sharetheir1imitedspacewithrubbishButeVeNsoToky0areaaloneisestimatedtohavethreemilliontonsofle~overmbbishatpEesent． In1996tlleunitedStatesleeycledandcomposted制成肥料57millionton80fwaste27％ofthenation’ss801idwaste．Thisis57milliontonsofwastewhichdidnotg0intolaJldfillsandincinerators焚化炉．Indoingt11is7000mbbishcoNectionprogrammesfltndrecyclingcen~e8helpedtlleauthorities． InRockfordacityinⅡIiNOisUSitsoffieialschooseonehouseeachweekandcheckitsgarbage废物．Ifthegarbagedoesnoteontainallnewspapersoraluminium铝earlsthenlheresident0ftllehOUSegetsaprizeofatleast$1000． InJapancertaincitiesgivechildtenweekly8uPPliesoftissuepaperfilldtoiletpaperinexchfillgeforaweeklycollection0fnewspapers． InoneyefllBritainrecycles ．1outofevery3newspapeI’S． ．1out0fevery4glassbotflesandjars罐子． ．1outofevery4itoms0fc10tlling． ．1out0fevery3aluminiumdrinkcans． In1999H0ngKongtmnsported1．3miUiontons0fwastet0mailllfilldChinaforrecycling．Aroand535000tons0fwastewererecycledinHONgKongitselfovethalfthethingswethrowawayconldberecycled．ThatmeansweconldrecycIelOtimesasmuchaswed0now． HoweverrecyclingneedsalotoforganisationaJldspecialequipment．Alsothereisnotmachuseforsomerecycledmaterial． InJapanthenewspaperscollectedbychildren
MindThoseManners0ntheSubway SothereyouarejustsittingthereinthesubwayCarenjoyingthatbookyoujustbut_____46Orthepersonsittingnextt0youtakesoutanailclipper指甲刀andbeginscuttinghis0Thernails．AnnoyingMany0fushavetospendsometimeeveryday0npublictransportation_____47Sotomakethetripmorepleasant．wesuggestthefollowingLetpassengersgetoffthebus0TsubwayCarbeforeyoucanget0n_____48StandawayfromthedoorswhentheyareclosingDon’ttalkloudlyonabusoTsubway．Chattingloudlywithyourfriendscanbeannoyingt0others_____49Don’tthinkyourbagsandsuitcases手提箱deserveaseat0ftheirown．Useatissuewheneveryoucough0rsneeze打喷嚏．Anuncoveredsneezecanspreadgerms细菌especiallyincrowdedplaces．Don’tcutyournails0rpickyournoseonpublictransportation．Don’treadoverotherpeople’sshoulder_____50Itcanmakepeopleuncomfortable．Theymightthinkyou’retoostingy小气的event0buyanewspaper．0rtheymightthinkyou’rejudgingtheirbehavior．
VlbraUngRubberCeHphones VibratingmbberceUphonesCOIlldbethenextbigthinginmobilecommunications．Theyallowwpeopletopressthephonel0IransmitVibrationsaJongwiththeir_____51words．Accordingt0aresearchteamattheMITMediaLabinCambridgeMassachusettstheideawillmake_____52morefun．ManymobilephonescallalreadyVibrateinsteadofringing_____53youd0notwantpeoplet0knowyouaregettingacall．Butthese_____54aret00simpleforsubtle敏感的communication．_____55AngelaChang0fthelab’sTangibleMediaGroup．They’reeitheronoroffshesavs．ButwhenyouholdChang’smbberceHphoneyour6ngersandthumbwl’aparoundfive_____56speakers．TheyVibrate_____57yourskinaround250timespersecond．Beneaththesespeakerssitpressuresensors传感器soyoucantransmitvibrationasweuas_____58it．whenvousqueezewithafingeraVibrationsignalistransmitted_____59yourcallerscorrespondingfingeritsspeed_____60onhOWhardyousqueeze．ChaJlgsayst}latwithinafewminutes0fbeinggiventhephonesstudentswereusingtIlevibrationfea．tureto_____61emphasistowhattheyweresaying．Overtimepeopleevenbegantotransmittheirownkind0fadhoc特别的Morsecodewhichtheywouldrepeatbacktoshowtheywere_____62whatthe0therpel’sonwassaying．ChangtIlinksVibralanguage8couldfunctionforthesame_____63astextingsometimespeoplewantt0comnlunicate_____64withouteveryonenearbyknowingwhatthey’resaying．And_____65actuallybeingablet0shakesomeone’shandwhenyoucloseabusinessdealshesays．
TooLatetoRegretIt WhenIwasajuniorImetasecond-yearstudentinmydepartment.Hewasn’ttallorgood-lookingbuthewasveryniceattractiveandathletic.HehadsomethingthatIadmiredverymuch.Hewasnaturalwarmandsincere. Idisregarded不顾myparents’disapproval.Wewereveryhappytogether.Hepickedmeupfrommydormeverymorningandafterclasswewouldsitalongsidethestreamthatranthroughcampusorsunbathe晒太阳onthelawn.Atnighthewouldwalkmebacktomydorm.Hecamefromapoorfamilybutinordertomakemehappyheborrowedmoneyfromhisfriendtobuypresentsandmealsforme.Ourfellowstudentslookeduptohimasarolemodelandthegirlsenvied妒忌me.Hewasn’talocalbutwantedtostayhereaftergraduation.Ithoughtwehadafuturetogether. HoweverwhenIgotapart-timejobduringthesummervacationpeoplebegangivingmealotofpressuresayingthataprettyintelligentgirllikemeshouldfindabetterguytospendtimewith.Thiswasalsowhatmyfamilythought.HespentthesummerinhishometownsoIwasallbymyself.WhenhegotbackIbeganfindingfaultwithhim.Buthisbigheartandwarmthsoondroveallunpleasantthoughtsaway.HoweverIhadnoideahowbadlyIhadhurthimandthatthingswouldgetworse. Ihadagoodpart-timejoboffcampusthatpaidprettywell.WithmygoodperformanceatschoolIalsogotadmissiontograduateschoolatoneofChina’sbestuniversities.Heontheotherhanddidnotdosowellatschooloratwork.Ihadtoworryabouthislivingexpensesjobandscores. Almostallmycolleaguesandfriendsadvisedmetobreakupwithhim.ThenwehadaquarrellastJune~Hewasingreatpainandmycoldwordsandbadmoodsstartedturninghimaway. Graduationtimewasdrawingnearandhesaidhewantedtogobacktohishometown.Hesaidthathecouldn’tputupwithmeanymore.Iwasshockedandlookedathimindespair. TruelovehappensonlyoncebutIfounditouttoolate. Uponlearningthathewouldleavehershewas
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