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如图为“验证力的平行四边形定则”的实验，将贴有白纸的木板竖直固定放置，三个细绳套L1、L2、L3一端共系于同一结点，另一端分别系于轻质弹簧测力计A、B和重物M上，弹簧测力计A的另一端挂于固定点P，手...
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高三下学期物理《》真题及答案
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某同学用两个弹簧测力计一根橡皮筋细绳套三角板及贴有白纸的方木板等器材进行验证力的平行四边形定则的实验
点是橡皮筋在白纸上的固定点，O.点是此次实验中用弹簧测力计将橡皮筋的活动端拉伸到的位置。关于此实验，下列说法中正确的是 A.只需记录拉力的大小
拉力方向应与木板平面平行
图3中F.′表示理论的合力，F.表示实验测出的合力
改变拉力，进行多次实验，并作出多个平行四边形，但每个四边形中的O.点位置不一定相同
验证力的平行四边形定则实验中1部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的竖
下列说法中错误的是
力的合成遵循平行四边形定则
一切矢量的合成都遵循平行四边形定则
以两个分力为邻边的平行四边形的两条对角线都是它们的合力
与两个分力共点的那一条对角线所表示的力是它们的合力
某同学用两个弹簧测力计一根橡皮筋细绳套三角板及贴有白纸的方木板等器材进行验证力的平行四边形定则的实验
只需记录拉力的大小
拉力方向应与木板平面平行
图中F′表示理论的合力，F表示实验测出的合力
改变拉力，进行多次实验，并作出多个平行四边形，但每个四边形中的O点位置一定相同
在做验证力的平行四边形定则实验时所需的器材除了木板白纸细线刻度尺和图钉外还应有的器材是A.天平B.橡
小明同学在学完力的合成与分解后想在家里做实验验证力的平行四边形定则他从学校的实验室里借来两个弹簧测力
验证力的平行四边形定则实验中1部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的竖
下列说法中正确的是
力的合成遵循平行四边形定则
一切矢量的合成都遵循平行四边形定则
以两个分力为邻边的平行四边形的两条对角线都是它们的合力
以两个分力为邻边的平行四边形中，与两个分力共点的那一条对角线所表示的力是它们的合力
验证力的平行四边形定则的实验原理是等效原理其等效性是指
使两分力与合力满足平行四边形定则
使两次橡皮筋与细绳套的结点都与某点O.重合
使两次橡皮筋伸长的长度相等
使弹簧秤在两种情况下发生相同的形变
2016届江苏盐城响水中学期末探究力的平行四边形定则的实验原理是等效原理其等效性是指
使两分力与合力满足平行四边形定则
使两次橡皮筋与细绳套的结点都与某点O.重合
使两次橡皮筋伸长的长度相等
使弹簧测力计在两种情况下发生相同的形变 解题思路：本实验中采用了两个力的合力与一个力效果相同来验证平行四边形定则，效果的相同是通过拉橡皮筋产生大小和方向相同的形变量来实现的.
4分在做验证力的平行四边形定则实验时给出的下列实验器材中本实验用不到的实验器材有A.带细绳套的橡皮条
验证力的平行四边形定则实验中.1部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的
某同学在学完力的合成后想在家里做实验验证力的平行四边形定则.他从学校的实验室里借来两个弹簧秤按如下步
在验证力的平行四边形定则的实验中实验时已提供的器材有方木板白纸橡皮条细绳套两个三角板刻度尺图钉多个1
验证力的平行四边形定则实验中1部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的竖
在做验证力的平行四边形定则的实验中若测量F1时弹簧秤的弹簧与其外壳发生了摩擦但所描出的细绳拉力的方向
I.验证力的平行四边形定则实验中部分实验步骤如下请完成有关内容A.将一根橡皮筋一端固定在贴有白纸的竖
验证力的平行四边形定则实验中1部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的竖
验证力的平行四边形定则实验中①部分实验步骤如下请完成有关内容A.将一根橡皮筋的一端固定在贴有白纸的竖
用力的合成验证力的平行四边形定则实验中某实验小组得出如图所示的图Ｆ与AO共线其中A为固定橡皮条的图钉
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设log23＝alog215＝b则log275＝结果用ab表示．
NeedaJobThisSummer? Theprovincialgovernmentanditspartnersoffermanyprogramstohelpstudentsfindsummerjobs.Thedeadlinesandwhatyouneedtoapplydependontheprogram. Notastudent?Gotothegovernmentwebsitetolearnaboutprogramsandonlinetoolsavailabletohelppeopleunder30buildskillsfindajoborstartbusinessesallyearround. JobsforYouth Ifyouareateenagerlivingincertainpartsoftheprovinceyoucouldbeeligible符合条件forthisprogramWhichprovideseightweeksofpaidemploymentalongwithtraining. Whoiseligible:Youth15﹣18yearsoldinselectcommunities社区. SummerCompany SummerCompanyprovidesstudentswithhands﹣onbusinesstrainingandawardsofupto$3000tostartandruntheirownsummerbusinesses. Whoiseligible:Studentsaged15﹣29returningtoschoolinthefall. StewardshipYouthRangerProgram YoucouldapplytobeaStewardshipYouthRangerandworkonlocalnaturalresourcemanagementprojectsforeightweeksthissummer. Whoiseligible:Studentsaged16or17attimeofhirebutnotturning18beforeDecember31thisyear. SummerEmploymentOpportunities机会 ThroughtheSummerEmploymentOpportunitiesprogramstudentsarehiredeachyearinavarietyofsummerpositionsacrosstheProvincialPublicServiceitsrelatedagenciesandcommunitygroups. Whoiseligible:Studentsaged15orolder.Somepositionsrequirestudentstobe15to24orupto29forpersonswithadisability. 1WhatisspecialaboutSummerCompany? A.Itrequiresnotrainingbeforeemployment. B.Itprovidesawardsforrunningnewbusinesses. C.Itallowsonetoworkinthenaturalenvironment. D.Itoffersmoresummerjobopportunities. 2WhatistheagerangerequiredbyStewardshipYouthRangerProgram? A.15﹣18. B.15﹣24. C.15﹣29. D.16﹣17. 3Whichprogramfavorsthedisabled? A.JobsforYouth. B.SummerCompany. C.StewardshipYouthRangerProgram. D.SummerEmploymentOpportunities.
已知双曲线的一个焦点为20则它的离心率为
AshleyPower'smotherboughtacomputerforherwhenshewaseight.WhenshewasthirteenshewassurfingtheInternetonaregularbasisbutshecouldn'tfindanywhereforteenagerstomeetandtalk.AndonedayshethoughtIfIhadmyownwebsiteI'dmakeitareallyinterestingsiteforteenagers. ConsequentlywhenAshleywassixteenshestartedherownwebsitecalledGooseHead.ShehadnoideahowbigasuccessitwouldbebutthreeyearslaterthesitewasthemostsuccessfulteensiteintheUSA!Itwasgetting100000hitseverydayandAshleyhadabout30employees. Afterafewyearsthewebsitecloseddown.ThenAshleywholivedinLosAngeleswasaskedtowriteabookcalledTheGooseHeadGuidetoLife.Ithebookisabouthowtodesignawebsiteandstartabusiness.ItbeginswithasectioncalledAllAboutAshleywhereAshleytellreaderswhatit'sliketobethebossofacompanywhenyou'reonlysixteen﹣notalwayseasy! InherbookAshleytalksabouttheproblemsthatteenagershavetodayplustheimportanceoffriendship.Shealsofocusesonbeingindependent.Learntoloveyourfriendsbutnotrelyonthem.IdidthatbycreatingGooseHeadonmyown. AshleysaysthatTheGooselleadCGuidetoLifeisnotabookofteenageadvice.Itisn'tabookthat'sgoingtotellyouwhattodo.Ihopeyoucanworkthatoutyourselfshesays.Ijustwanttoprovidealittleinspirationtoteenagers.Maybeafterreadingmystoryyou'llstartyourownwebsite!Butperhapsyou'vegotabeeridea?WellifIwereyouI'djustdoitwhateveritis. Maybeitwon'twork﹣﹣﹣butmaybeitwill. 1WhydidAshleystartGoosehead? A.Topromotethesaleofherbook. B.Toupdatehermother'scomputer. C.ToteachteenagershowtousetheInternet. D.Tocreateaplatformforteenagerstocommunicate. 2WherecanyoufindtheinformationthatbestshowsthesuccessofAshley'swebsite? A.Inparagraph1. B.Inparagraph2. C.Inparagraph3. D.Inparagraph4. 3WhatdoweknowaboutTheTheGooseHeadGuidetoLife. A.Itservestofuelteenagers'motivation. B.Itismeanttogiveteenagerstips. C.Itadvisesteenagerstodependonfiends. D.Itisaboutwaystobebossofacompany. 4WhatdoesAshleyinspireteenagerstodo? A.Followtheirdream. B.Starttheirownwebsite. C.Buyacopyofherbook. D.Beamodelforothers.
Asdataandidentitytheftbecomesmoreandmorecommonthemarketisgrowingforbiometric生物测量technologies﹣likefingerprintscans﹣tokeepothersoutofprivatee﹣spaces.Atpresentthesetechnologiesarestillexpensivethough. ResearchersfromGeorgiaTechsaythattheyhavecomeupwithalow﹣costdevice装置thatgetsaroundthisproblem:asmartkeyboard.Thissmartkeyboardpreciselymeasuresthecadence节奏withwhichonetypesandthepressurefingersapplytoeachkey.Thekeyboardcouldofferastronglayerofsecuritybyanalyzingthingsliketheforceofauser'stypingandthetimebetweenkeypresses.Thesepatternsareuniquetoeachperson.Thusthekeyboardcandeterminepeople'sidentitiesandbyextensionwhethertheyshouldbegivenaccesstothecomputerit'sconnectedto﹣regardlessofwhethersomeonegetsthepasswordright. Italsodoesn'trequireanewtypeoftechnologythatpeoplearen'talreadyfamiliarwith.Everybodyusesakeyboardandeverybodytypesdifferently. Inastudydescribingthetechnologytheresearchershad100volunteerstypethewordtouchfourtimesusingthesmartkeyboard.Datacollectedfromthedevicecouldbeusedtorecognizedifferentparticipantsbasedonhowtheytypedwithverylowerrorrates.Theresearcherssaythatthekeyboardshouldbeprettystraightforwardtocommercializeandismostlymadeofinexpensiveplastic﹣likeparts.Theteamhopestomakeittomarketinthenearfuture. 1Whydotheresearchersdevelopthesmartkeyboard? A.Toreducepressureonkeys. B.Toimproveaccuracyintyping. C.Toreplacethepasswordsystem. D.Tocutthecostofe﹣spaceprotection. 2Whatmakestheinventionofthesmartkeyboardpossible? A.Computersaremucheasiertooperate. B.Fingerprintscanningtechniquesdevelopfast. C.Typingpatternsvaryfrompersontoperson. D.Datasecuritymeasuresareguaranteed. 3Whatdotheresearchersexpectofthesmartkeyboard? A.It'llbeenvironment﹣friendly. B.It'llreachconsumerssoon. C.It'llbemadeofplastics. D.It'llhelpspeeduptyping. 4Whereisthistextmostlikelyfrom? A.Adiary. B.Aguidebook. C.Anovel. D.Amagazine.
如图在长方体ABCD﹣A1B1C1D1中EFG分别为棱CC1DD1AA1的中点AB＝2． 1证明C1G∥平面ABEF． 2若直线BE与底面ABCD所成角为60°且四边形ABEF为菱形求长方体ABCD﹣A1B1C1D1的体积．
Bytheendofthecenturyifnotsoonertheworld'soceanswillbebluerandgreenerthankstoawarmingclimateaccordingtoanewstudy. Attheheartofthephenomenonlietinymarinemicroorganisms海洋微生物calledphytoplankton.Becauseofthewaylightreflectsofftheorganismsthesephytoplanktoncreatecolourfulpatternsattheoceansurface.Oceancolourvariesfromgreentobluedependingonthetypeandconcentrationofphytoplankton.Climatechangewillfuelthegrowthofphytoplanktoninsomeareaswhilereducingitinotherspotsleadingtochangesintheocean'sappearance. Phytoplanktonliveattheoceansurfacewheretheypullcarbondioxide二氧化碳intotheoceanwhilegivingoffoxygen.Whentheseorganismsdietheyburycarboninthedeepoceananimportantprocessthathelpstoregulatetheglobalclimate.Butphytoplanktonarevulnerabletotheocean'swarmingtrend.Warmingchangeskeycharacteristicsoftheoceanandcanaffectphytoplanktongrowthsincetheyneednotonlysunlightandcarbondioxidetogrowbutalsonutrients. StephanieDutkiewiczascientistinMIT'sCenterforGlobalChangeSciencebuiltaclimatemodelthatprojectschangestotheoceansthroughoutthecentury.Inaworldthatwarmsupby3℃itfoundthatmultiplechangestothecolouroftheoceanswouldoccur.Themodelprojectsthatcurrentlyblueareaswithlittlephytoplanktoncouldbecomeevenbluer.ButinsomewaterssuchasthoseoftheArcticawarmingwillmakeconditionsriperforphytoplanktonandtheseareaswillturngreener.Notonlyarethequantitiesofphytoplanktonintheoceanchangingshesaidbutthetypeofphytoplanktonischanging. Andwhydoesthatmatter?Phytoplanktonarethebaseofthefoodweb.IfcertainkindsbegintodisappearfromtheoceanDutkiewiczsaiditwillchangethetypeoffishthatwillbeabletosurvive.Thosekindsofchangescouldaffectthefoodchain. Whatevercolourchangestheoceanexperiencesinthecomingdecadeswillprobablybetoogradualandunnoticeablebuttheycouldmeansignificantchanges.It'llbeawhilebeforewecanstatisticallyshowthatthechangesarehappeningbecauseofclimatechangeDutkiewiczsaidbutthechangeinthecolouroftheoceanwillbeoneoftheearlywarningsignalsthatwereallyhavechangedourplanet. 1Whatarethefirsttwoparagraphsmainlyabout? A.Thevariouspatternsattheoceansurface. B.Thecauseofthechangesinoceancolour. C.Thewaylightreflectsoffmarineorganisms. D.Theeffortstofuelthegrowthofphytoplankton. 2WhatdoestheunderlinedwordvulnerableinParagraph3probablymean? A.Sensitive. B.Beneficial. C.Significant. D.Unnoticeable. 3Whatcanwelearnfromthepassage? A.Phytoplanktonplayadecliningroleinthemarineecosystem. B.Dutkiewicz'smodelaimstoprojectphytoplanktonchanges. C.Phytoplanktonhavebeenusedtocontrolglobalclimate. D.Oceanswithmorephytoplanktonmayappeargreener. 4Whatisthemainpurposeofthepassage? A.Toassesstheconsequencesofoceancolourchanges. B.Toanalysethecompositionoftheoceanfoodchain. C.Toexplaintheeffectsofclimatechangeonoceans. D.Tointroduceanewmethodtostudyphytoplankton.
八卦是中国道家文化的深奥概念是一套用三组阴阳组成的哲学符号．八卦表示事物自身变化的阴阳系统用“”代表阳用“﹣﹣”代表阴用这两种符号按照大自然的阴阳变化平行组合组成八种不同的形式如图所示．从图中的八卦中随机选取一卦则此卦中恰有两个“﹣﹣”的概率为
近年来郑州经济快速发展跻身新一线城市行列备受全国属目无论是市内的井字形快速交通网还是辐射全国的米字形高铁路网郑州的交通优势在同级别的城市内无能出其右．为了调查郑州市民对出行的满意程度研究人员随机抽取了1000名市民进行调查并将满意程度以分数的形式统计成如下的频率分布直方图其中a＝4b Ⅰ求ab的值 Ⅱ求被调查的市民的满意程度的平均数众数中位数 Ⅲ若按照分层抽样从[5060[6070中随机抽取8人再从这8人中随机抽取2人求至少有1人的分数在[5060的概率．
ThepolarbearisfoundintheArcticCircleandsomebiglandmassesasfarsouthasNewfoundland.Whiletheyarerarenorthof88°thereisevidence1theyrangeallthewayacrosstheArcticandasfarsouthasJamesBayinCanada.Itisdifficulttofigureoutaglobalpopulationofpolarbearsasmuchoftherangehasbeen2poorstudied;howeverbiologistscalculatethatthereareabout20000﹣25000polarbearsworldwide. Modernmethods3trackingpolarbearpopulationshavebeenemployedonlysincethemid﹣1980sandareexpensive4performconsistentlyoveralargearea.InrecentyearssomeInuitpeopleinNunayut5reportincreasesinbearsightingsaroundhumansettlementsleadingtoa6believethatpopulationsareincreasing.Scientistshaverespondedby7notethathungrybearsmaybecongregating聚集aroundhumansettlementsleadingtotheillusion错觉thatpopulationsare8highthantheyactuallyare.Of9nineteenrecognizedpolarbearsubpopulationsthreearedecliningsix10bestableoneisincreasingandninelackenoughdata.
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意:1.每处错误及其修改均仅限一词;2.只允许修改10处多者从第11处起不计分. LastweekendmyBritishfriendJimspottedpaper﹣cuttingstandwhenwewerewanderingonthestreet.Hadneverseepaper﹣cutsheimmediatelyboughtone.Thereforethesellershookherheadatthemomentshesawthe100﹣yuannoteJimhandedovertoher.Shehadnochanges!HowdisappointedJimwas!HewasabouttoquitwhileItookoutmycellphonescantheQRcodeonthestandandpaidfiveyuan.Jimwasverysurprising.Iexplainedtoherthatnowadayswecouldpaywithacellphoneforalmosteverything.Wow!JimsaidThepaper﹣cutlooksgreatandthepaymentmethodseemsevengreat!
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设集合A＝{x|﹣2＜2x＜4}B＝{x|x≤1}则A∩B＝
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△ABC的内角ABC的对边分别为abcsin2A＝2sin2Bc＝2b． 1求cosB 2若△ABC的面积为求△ABC的周长．
若函数在[0t]上的值域为则t的取值范围为
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函数的图象大致为
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假设你是红星中学高三学生李华.你的英国好友Jim打算暑假期间来北京天津和上海旅游发来邮件询问相关信息.请你给他回复邮件内容包括: 1.交通出行; 2.必备衣物. 注意:1.词数不少于50; 2.开头和结尾已给出不计入总词数. DearJim Yours LiHua
设命题p∀x＞0|x|＝x则￢p为
Whenyouthinkoffiendsyouoftenthinkofthosewhoaccompanyyouforalongtime.Butthereisanotherkindof1﹣﹣﹣onethatdoesnotunfoldovera2periodoftimebutspringsentirelyfromaparticular3. InmyeighthgradetherewasJenny.I4tostayatherfarmhousewithcatsanddogs.Eighthgradewasaterribleyear.Weboth5itbutwedidn'ttalkaboutit.Oncoldwinterdaysshe6mehowsheliedonherponyRedwing'sback.Thenwewould7onlongjourneyridingandwalkingSheletinninthgradeandI8her.Wehadgotteneachotherthrougha9time. Anyonewithchildrenknowstherapidfriendshipsformedwithparallelparents.ToJulieIwillbeforever10.Wemetona111inNewJersey.Hertwinboyswereaboutthesame12asmydaughter.Shelivedinthebeachtown.Ilivedalonewithmy13ablockaway.MyhusbandhadleftforNorthDakotaleavingmeto14outwhattodoext.Now15therewassomeoneIcouldtalkto.ForthenetweekswemetatthebeachandIwouldgo16withhersothatthe17couldgoonplayingThenormalstateofherlittlehome18mybrokenheart. Suchfriendsastheseoften19whenyourownlifeisoffbalance;they20youtilltheworldsettledonitsaxis轴onceagain. 1A.classmate B.friendship C.marriage D.neighbour 2A.brief B.special C.consistent D.long 3A.custom B.festival C.ceremony D.moment 4A.loved B.tended C.attempted D.demanded 5A.overlooked B.knew C.forgot D.preserved 6A.inspired B.required C.consulted D.showed 7A.goout B.makeup C.slowdown D.fallbehind 8A.followed B.admired C.missed D.forgave 9A.cheerful B.difficult C.grand D.decisive 10A.reliable B.merciful C.generous D.grateful 11A.beach B.farm C.playground D.square 12A.size B.intelligence C.age D.weight 13A.daughter B.husband C.sister D.parents 14A.turned B.puzzled C.pointed D.carried 15A.punctually B.ridiculously C.suddenly D.theoretically 16A.home B.downtown C.shopping D.swimming 17A.adolescents B.boys C.children D.girls 18A.ached B.hardened C.comforted D.bled 19A.withdraw B.arrive C.disappear D.gather 20A.recommended B.promoted C.tolerated D.supported
SkyscrapersarethesymbolofUrbanlife.Citypeopleareusedtoseeingtallbuildingsandapartments.Farmsontheotherhandareassociatedwithrural农村的life.Howeverthereareexpertswhothinkskyscrapersshouldbecomefarmstomeettheincreasingfoodneeds. Bythemiddleofthiscenturysomescientistssuggestalmost80%oftheearth'spopulationcouldliveincities.Inadditionthepopulationcouldincreaseto9.1billionpeopleduringthattimeyettheamountoflandavailableforfarmingwillbethesame.Ifcurrentfarmingpracticesdon'tchangewewillneedanareaofnewlandtoproduceenoughfoodfortheplanet. Verticalfarmswhereurbanfarmerscouldgrowcropsinenvironmentallyfriendlyskyscraperscouldbethesolution.Inspiteofconcernsoverhighcostsexpertswanttomakeitarealityandusetheseskyscraperstogrowcrops. Verticalfarmswouldhavemanyadvantagessupporterssay.Unliketraditionalfarmingverticalfarmingcouldbefreeofchemicalsanddiseases.Besidescropswouldnotsufferfromproblemslikeflooding.Finallyverticalfarmswouldreducethecostandnegativeeffectsoftransportingfoodoverlongdistances. Somearguethatalthoughcropsgrowinginatallglassbuildingwouldgetnaturalsunlightduringthedayitwouldn'tbeenough.Forthisreasonverticalfarmswouldneedadditionallightsources来源suchasartificiallight. Anotherwayofgrowingfreshfoodistobuildurbanfarmsonrooftops.Thismorepracticalapproachmaybemoreachievablethantheideaoffarmsinskyscrapersresearcherssuggest.Expertsagreethatinnovative革新的farmingpracticesareneededtosupporttheneedformorefoodataffordablecostsbothtothefarmerandtotheconsumerbutthebestideascouldbeyettocome. 1Whatprimaryproblemcouldverticalfarmingsetle? A.Poorstateofrurallife. B.Shortageoffoodsupply. C.Highcostfortransportingcrops. D.Environmentalpollutionbytransitionalfarmings 2Whatistheadvantageofverticalfarming? A.Itcanproduceorganicfood. B.Itrequireslittlecare. C.Itcanbenefittransportindustry. D.Itneedsverylowcost. 3Whatisabigchallengetomakeverticalfarmingareality? A.Farmableland. B.Cropdiseases C.Lightsources. D.Climateconditions. 4Whatcanbethebesttitleofthetest? A.FutureFoodNeeds B.SymbolofUrbanLife C.FarmingonRooftops D.FarmsoftheFuture
保险公司统计的资料表明居民住宅区到最近消防站的距离x单位千米和火灾所造成的损失数额y单位千元有如下的统计资料 如果统计资料表明y与x有线性相关关系试求 Ⅰ求相关系数r精确到0.01 Ⅱ求线性回归方程精确到0.01 III若发生火灾的某居民区与最近的消防站相距10.0千米评估一下火灾的损失精确到0.01． 参考数据yi＝175.4xiyi＝764.36xi﹣yi﹣＝80.30xi﹣2＝14.30yi﹣2≈471.65≈82.13 参考公式相关系数r＝ 回归方程＝+t中斜率和截距的最小二乘估计公式分别为＝＝﹣x．
AliceMooreisateenagerentrepreneur创业者whoinMay2015setupherbusinessAilieCandy.Bythetimeshewas13hercompanywasworthmillionsofdollarswiththeinventionofasuper﹣sweettreatthatcouldsavekids'teethinsteadofdestroyingthem. ItallbeganwhenMoorevisitedabankwithherdad.Ontheoutingshewasofferedacandybar.Howeverherdadremindedherthatsugarytreatswerebadforherteeth.ButMoorewassickofmissingoutoncandies.SoshedesiredtogetroundthewarningWhycan'tImakeahealthycandythat'sgoodformyteethsothatmyparentscan'tsaynotoit?WiththatinmindMooreaskedherdadifshecouldstartherowncandycompany.Herecommendedthatshedosomeresearchandtalktodentistsaboutwhatahealthiercandywouldcontain. Withherdad'spermissionshespentthenexttwoyearsresearchingonlineandconductingtrialstogetarecipethatwasbothtastyandtooth﹣friendly.Shealsoapproacheddentiststolearnmoreaboutteethcleaning.Consequentlyshesucceededinmakingakindofcandyonlyusingnaturalsweetenerswhichcanreduceoralbacteria. Moorethenusedhersavingstogetherbusinessofftheground.AfterwardssheandherfathersecuredtheirfirstbusinessmeetingwithasupermarketownerwhofinallyagreedtosellMoore'sproduct﹣CanCandy. AsCanCandy'ssuccessgrowssodoesMoore'scredibilityasayoungentrepreneur.Mooreisenthusiasticaboutthecandyshecreatedandshe'salsopositiveaboutwhatthefuturemightbring.Shehopesthateverykidcanhaveacleanmouthandabroadsmile. Meanwhilewithherparents'helpMooreisgenerallyabletoliveanormalteenagelife.Althoughshefoundedhercompanyearlyonilllifeshewasn'tdrivenprimarilybyprofit.Moorewantstouseheruniquetalenttohelpothersfindtheirsmiles.Shedonates10%ofAilieCandy'sprofitstoBigSmiles.WithhertalentanddeterminationitappearsthattheskycouldbethelimitforAliceMoore. 1HowdidMoorereacttoherdad'swarning? A.Shearguedwithhim. B.Shetriedtofindawayout. C.Shepaidnoattention. D.Shechosetoconsultdentists. 2WhatisspecialaboutCanCandy? A.Itisbeneficialtodentalhealth. B.Itisfreeofsweeteners. C.Itissweeterthanothercandies. D.Itisproducedtoadentists'recipe. 3WhatdoesMooreexpectfromherbusiness? A.Toearnmoremoney. B.Tohelpotherfindsmiles. C.Tomakeherselfstandout. D.Tobeatothercandycompanies. 4WhatcanwelearnfromAliceMoore'sstory? A.Fameisagreatthirstoftheyoung. B.Ayouthistoberegardedwithrespect. C.Positivethinkingandactionresultinsuccess. D.Successmeansgettingpersonaldesiressatisfied.
IsFreshAirReallyGoodforYou? Weallgrewuphearingpeopletellustogooutandgetsomefreshair.1AccordingtorecentstudiestheanswerisabigYESiftheairqualityinyourcampingareaisgood. 2Iftheairyou'rebreathingisclean﹣whichitwouldbeifyou'reawayfromthesmogofcities﹣thentheairisfilledwithlife﹣givingenergizingoxygen.Ifyouexerciseoutofdoorsyourbodywilllearntobreathemoredeeplyallowingevenmoreoxygentogettoyourmuscles肌肉andyourbrain. Recentlypeoplehavebegunstudyingtheconnectionbetweenthenaturalworldandhealing治愈.3Intheseplacespatientscangotobenearnatureduringtheirrecovery.Itturnsoutthatjustlookingatgreengrowingthingscanreducestresslowerbloodpressureandputpeopleintoabettermood情绪.Greeneryisgoodforus.HospitalpatientsWhoseetreebranchesouttheirwindowarelikelytorecoveratafasterratethanpatientswhoseebuildingsorskyinstead.4Itgivesusagreatfeelingofpeace. 5Whilethesun'srayscanageandharmourskintheyalsogiveisbeneficialVitaminD.TomakesureyougetenoughVitaminD﹣butstillprotectyourskin﹣putonsunscreenrightasyouheadoutside.Ittakessunscreenaboutfifteenminutestostartworkingandthat'splentyoftimeforyourskintoabsorbaday'sworthofVitaminD. A.Freshaircleansourlungs. B.Sowhatareyouwaitingfor? C.Beinginnaturerefreshesus. D.Anothersidebenefitofgettingfreshairissunlight. E.Butisfreshairreallyasgoodforyouasyourmotheralwayssaid? F.Justasimportantlywetendtoassociateairwithhealthcare. G.AllacrossthecountryrecoverycentershavebegunbuildingHealingGardens.
RegardlessoftheweatherorthedistancePaulWilsonwillmakesurelow﹣incomestudentsinhisneighborhoodarriveattheircollegeclassesontime. Aretiredengineer76﹣year﹣oldWilsonhasbeen1freeridestocollegestudentsforthepasteightyears.Sincehefirststarted2hiscartotheyoungpeopleWilsonhas3anastonishing64000milesandhashadcountlesspleasantandoftenhumorous4withthestudentshetransportstoandfromschool.Thestudentswhohe's5havegoneontobecomephysiciansteachersandengineersbutwhatthey'vealsogotoutoftheirtimeinschoolisfindingarolemodelandafriendinWilson.Somestudents6callhimGrandpa. TinaStern7ridesfromWilsonforallherfouryearsincollegeandthetripsmeantmuchmoretoherthanjustfree8.It'snotjustaride;you'renotjustsittingtherein9silenceorwithyourheadphonesonSternsaid.Heasksyouquestionsandactually10theanswerssothenexttimeyouridewithhimhe'll11thosethings. Wilsonfirstworkedasadriverthroughastudent﹣supportprogrammeofthenon﹣profitorganisationOnPointforCollege.Althoughthe12asksthemembersonlytodrivestudentstoandfromtheirclassesWilsonoftengoes13toensurethewelfareandsafetyofthestudents.Iftheyhaveproblemswithregistration.Wilsonisthereto14them.IftheyrunoutofcertaindailynecessitiesWilsonwilldrivetotheneareststoreandpurchasewhat'sneeded.IfastudentgetshungryonthelongdrivestoandfromschoolWilsonnever15tobuythemameal. FormanystudentsWilson'shelpisnotonlyappreciatedit'salsoentirely16forthemtobeabletocompletetheircollegeeducation.Somestudentsdon'thaveareliablecarwhileothershaveto17vehicleswithparentswhoworksixdaysaweek.ForthemridingwithWilsonhas18themtocompletetheireducation﹣butaccordingtoWilsonhebenefitsjustasmuchfromthe19.IjustlovedrivingandIlovethesekidsWilsonsaid.It'ssuchan20tobeapartofthesekids'livesevenjustforafewhoursgettingtoknowthemandhearingtheirstories. 1A.linking B.sending C.offering D.distributing 2A.donating B.lending C.delivering D.volunteering 3A.paved B.covered C.measured D.wandered 4A.arguments B.interviews C.negotiations D.conversations 5A.met B.driven C.addressed D.greeted 6A.even B.ever C.once D.already 7A.earned B.received C.assessed D.demanded 8A.transportation B.style C.time D.communication 9A.forced B.awkward C.ridiculous D.suspicious 10A.selects B.recites C.guesses D.remembers 11A.acton B.settleon C.checkon D.agreeon 12A.club B.league C.college D.programme 13A.far B.around C.beyond D.forwards 14A.assist B.watch C.urge D.warn 15A.expects B.attempts C.manages D.hesitates 16A.extra B.unusual C.necessary D.adequate 17A.share B.fuel C.repair D.exchange 18A.required B.allowed C.reminded D.convinced 19A.experience B.arrangement C.appreciation D.employment 20A.effort B.ambition C.privilege D.convenience
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