首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
如图所示，在竖直平面内固定一半圆形轨道，O为圆心，AB为水平直径，有一可视为质点的小球从A点以不同的初速度向右水平抛出，不计空气阻力，下列说法正确的是（ ）
查看本题答案
包含此试题的试卷
高三下学期物理《》真题及答案
点击查看
你可能感兴趣的试题
如图所示水平轨道AB与位于竖直平面内半径为R.的半圆形光滑轨道BCD相连半圆形轨道的BD连线与AB垂
如图15所示竖直平面内的光滑半圆形轨道MN的半径为R.MP为粗糙水平面.两个小物块A.B.可视为质点
如图所示光滑的水平轨道AB与半径为R.的光滑的半圆形轨道BCD相切于B.点AB水平轨道部分存在水平向
R.越大，x越大
R.越大，小球经过B.点后瞬间对轨道的压力越大
m越大，x越大
m与R.同时增大，电场力做功增大
如图所示在竖直平面内固定着半径为R.的半圆形轨道小球B.静止在轨道的最低点小球A.从轨道右端正上方3
如图所示半径为R的竖直光滑半圆形轨道BC与光滑水平地面AB相切于B点弹簧左端固定在竖直墙壁上用一质量
如图所示水平面上某点固定一轻质弹簧A.点左侧的水平面光滑右侧水平面粗糙在A.点右侧5m远处B.点竖直
如图所示光滑的水平轨道AB与半径为R.的光滑的半圆形轨道BCD相切于B.点AB水平轨道部分存在水平向
R.越大，x越大
R.越大，小球经过B.点后瞬间对轨道的压力越大
m越大，x越大
m与R.同时增大，电场力做功增大
14分如图所示水平轨道AB与位于竖直面内半径为R.=0.90m的半圆形光滑轨道BCD相连半圆形轨道的
在场强为E.方向竖直向下的匀强电场中的竖直平面内有一绝缘的光滑半圆形轨道如图所示在轨道最高点A.处有
如图所示水平轨道AB与位于竖直面内半径为R.的半圆形光滑轨道BCD相连半圆形轨道的BD连线与AB垂直
如图所示DCB为半圆形支架两细绳OA和OB连接于圆心O下悬重为G的物体若细绳OA固定不动将细绳OB的
如图所示水平轨道AB与位于竖直面内半径为R.的半圆形光滑轨道BCD相连半圆形轨道的BD连线与AB垂直
如图所示半圆形轨道固定在竖直面内A.C端与圆心O等高圆轨道半径为R一质量为m小滑块自A点由静止开始下
在场强为E.方向竖直向下的匀强电场中的竖直平面内有一绝缘的光滑半圆形轨道如图所示在轨道最高点A.处有
如图所示水平轨道AB与位于竖直面内半径为R.=0.90m的半圆形光滑轨道BCD相连半圆形轨道的BD连
18分如图所示位于竖直平面内的光滑轨道由一段倾角为37°的斜轨道和半径为0.4m的半圆形轨道连接而成
如图所示同一竖直平面内固定着两水平绝缘细杆ABCD长均为L.两杆间竖直距离为hBD两端以光滑绝缘的半
如图所示水平轨道BC与弧形轨道AB和半圆形轨道CD平滑相接ABBC和CD处于同一竖直平面内CD的半径
如图所示在距水平地面高均为0.4m处的P.Q.两处分别固定两光滑小定滑轮细绳跨过滑轮一端系一质量为m
如图2所示在竖直平面内有一半径为1m的半圆形轨道质量为2kg的物体从与圆心O等高的A点由静止开始滑下
热门试题
更多
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.
某几何体的三视图如图所示则该几何体的表面积为
设集合A＝{x|﹣2＜2x＜4}B＝{x|x≤1}则A∩B＝
双曲线的左焦点为﹣30且C的离心率为则C的方程为
已知平面向量＝22＝x﹣1 Ⅰ若∥求x Ⅱ若⊥﹣2求与所成夹角的余弦值
假定你是李华暑假在伦敦学习得知当地美术馆要举办中国画展.请写一封信申请做志愿者内容包括: 1.写信目的; 2.个人优势; 3.能做的事情. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯; 3.结束语已为你写好.
△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
已知函数fx＝|x+2a|+|x﹣a|． 1当a＝1时求不等式fx≥4﹣|x+2|的解集 2设a＞0b＞0且fx的最小值为t．若t+3b＝3求的最小值．
已知向量的夹角为θ且则θ＝．
水痘是一种传染性很强的病毒性疾病易在春天爆发．市疾控中心为了调查某校高年级学生注射水症疫苗的人数在高一年级随机抽取5个班级每个班抽取的人数互不相同若把每个班级抽取的人数作为样本数据．已知样本平均数为7样本方差为4则样本据中的最大值是．
函数的图象大致为
已知函数fx＝2x2+alnx． 1当a＝﹣1时求fx的单调区间 2试问是否存在实数a使得fx≥a2对x∈[12]恒成立若存在求a的取值范围若不存在请说明理由．
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
热门题库
更多
高二下学期数学
高二上学期化学
高二下学期物理
高三下学期物理
高三上学期物理
高三上学期生物
高三上学期化学
高二下学期化学
高二下学期生物
高三下学期生物
高三下学期化学
高三上学期英语
高二下学期英语
教案备课库
高三下学期英语
教案备课库
湘公网安备 43130202000226号