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根据图提供的信息，请回答下列问题： （1）A图中X的值是 ． （2）化学性质相似的原子是 （填字母序号，下同）． （3）具有稳定结构的原子 ． （4）属于同种元素的粒子是 ...
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请根据图回答问题下面右图中ABC表示三种体液①②③表示某些化学物质请据图回答人体维持内环境的相对稳定
图4是一台主机上用Sniffer捕捉的数据包清根据显示的信息回答下列问题 根据图中No.栏中
根据图中提供的信息请回答下列问题1由A图可知硅的相对原子质量为2B.C.D.E中属于同种元素的是3B
下图中A.B.C.D.是四种粒子的结构示意图E.是钾元素在元素周期表中的信息图请回答下列问题1A.B
完成y=的图象并根据图象回答问题.1根据图象指出当y=-2时x的值;2根据图象指出当-2
根据下图提供的信息请回答下列问题1A.图表示原子其中X.的值是2化学性质相似的原子是填字母序号下同3
图A图B为两种生物细胞模式图请回答下列问题 图中②表示的是细胞膜它的功能是图中的填标号
图5是一台Windows主机在命令行模式下执行某个命令时用Sniffer捕获到的数据包请根据图中信息
阅读以下说明和流程图如图23-16至图23-19所示回答问题1至问题3 【说明】下面给出的是某房产
所给出的图表文字或综合性资料均有若干个问题要你回答你应根据资料提供的信息进行分析比较计算和判断
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图5是一台Windows主机在命令行模式下执行某个命令时用Sniffer捕获到的数据包请根据图中信息
根据右图提供的信息结合所学知识回答下列问题1图中哪个字母是表示促使三国鼎立局面形成的著名战场图中哪个
根据图中提供的信息请回答下列问题1由A.图可知硅的相对原子质量为2BC.D.E.中属于同种元素的是3
阅读下列说明和数据流图回答问题1至问题3将解答填入对应栏内[说明]下面给出的是某房产管理系统的一套分
请根据图回答问题下面右图中ABC表示三种体液①②③表示某些化学物质请据图回答人体维持内环境的相对稳定
某校想了解学生每周的课外阅读时间情况随机调查了部分学生对学生每周的课外阅读时间x单位小时进行分组整理
根据下图提供的信息请回答下列问题1A.图表示原子其中X.的值是2化学性质相似的原子是填字母序号下同3
某校想了解学生每周的课外阅读时间情况随机调查了部分学生对学生每周的课外阅读时间x单位小时进行分组整理
下面是三个国家的轮廓图请你根据图中所提供的信息分析回答问题6分1图中地跨东西两半球的国家名称是___
根据图提供的信息结合所学知识回答下列问题1图中哪个字母是表示促使三国鼎立局面形成的著名战场2结合图将
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Personalitiesareourcharacteristicpatternsofthoughtsfeelingsandbehaviorsandhavingagreatpersonalityisn'tabouttryingtobelikeotherpeople・1it'sprobablybecausetheyaresincereandhappy.Therearealwayswaysthatyoucanimproveyourself 2.Awkwardsituationsarealwaysuncomfortable・Don'ttrytobesomeonethatyouaren't.Ifyoumeetsomenewpeopledon'tworryaboutnothavinganythingincommonwiththemjustmakelightmeetsomenewpeopledon'tworryaboutnothavinganythingagreathappy.trytobesomeonethatyouaren't.Ifyouincommonwiththemjustmakelightconversations?befriendlyandaskquestions. Behappy.3.Noonecanresistahappyperson.Thisdoesn'tmeanyouhavetohideyourfeelings.Ifsomething'sreallybotheringyouneverfeelyouhavetofake假装asmile.Justmakesureyoutrytoseethebestinthingsandshowpeoplethatyou'reahappyperson. Avoidtryingtobepopular.4you'renotgoingtocelebrateforyourself.Themostimportantthingisdevelopingadependablegroupoffriendswhoyoucareaboutandwhocareaboutyou. Developyourinterests.Onevitalpartofhavingagoodpersonalityishavinginterestingthingstotalkabout.Thatdoesn'tmeanyouneedtostudyastrophysics一youjustneedtohaveinterests.Ifyouareexcitedaboutsomethingyouprobablywillbeabletotellotherpeopleaboutitinaninterestingway.Readsomethingeveryday.Watchmovies.Lookfornewhobbies.5・ A.Alwaysbehonestwithyourself B.Whateveryoudoinordertomakefriendswithothers C.Talkaboutwhatyoulikeinsteadofwhatyoudon'tlike D.Justtrytoexperiencewhattheworldhasofferedtoyou E.Trytoalwayslookonthebrightsidebepositiveandsmile F.Whenyouthinksomeonethatyouseehasagoodpersonality G.Ifitlookslikeeverythingyoudoiswiththegoalofgettingotherpeopletolikeyou
TheNationalStorytellingYouthOlympicsisaneventwherethousandsofkidsfromgrades6to12competeagainsteachotherbytellingstories.ItissponsoredbytheMaster'sDegreePrograminReadingandStorytellingatEastTennesseeStateUniversity.Thesolepurposeofthiseventistopromoteandencourageboththeartandscienceofstorytellingamongmiddleschoolandhighschoolstudents.Althoughthiseventiscompetitiveitsunderlying内在的intentandgoalistoprovidestudentsacrossthenationwithareasontopractisenumerousnoncompetitiveskills. Thoseskillsincludeskillfulsportsmanshipresponsiblebehaviorandanattitudeofrespectforothersandthestorytellingstyle.TheeventualgoaloftheNationalStorytellingYouthOlympicsistoencourageeveryclassroominAmericatodiscoverorrediscoverthebeautyofstorytellingandstoryperformance.TheNationalStorytellingYouthOlympicstakesplaceusuallyaroundthefirstweekendinMarch.StudentsfromalloverthecountryarrivebybusplaneorautomobileinJohnsonCityTennessee.TheyusuallyarriveonThursdayorFriday.ThosethatarriveonThursdaymakeuseoftheirearlyarrivalbytellingstoriesatlocalschools.OnFridayaneveningmealispreparedforallcontestantscoachesandparents.Gamesareplayedstoriesaretoldandlifetimefriendshipsbegin.Saturdayisthedayofthebigevent.Aluncheon午餐会isheldintheafternoonsocontestantscanfamiliarizethemselveswiththesurroundingsanddoasoundcheck. Theeventisdividedintothreecategoriesseparatedbygrades.Contestantsarejudgednotonlybytheirstorytellingperformancebutalsobytheattitudeandbehaviortheydisplayduringtheentireweekend.AwinnerispickedfromeachofthethreecategorieshoweverthereisanoverallwinnerwhoisawardedthenameofGrandTorchBearer.Thispersonisselectednotonlybythejudgesbutalsobythecontestants.Afterthewinnershavebeenannouncedthecontestantsretreatbacktotheirhotelwhereacelebratoryicecreampartyisheldandbelieveitornottheytellmorestories!ThisiswhattheNationalStorytellingYouthOlympicsisallaboutdevelopingalovefortheartofstorytelling. 1WhywouldsomeoneMOSTLIKELYchoosetoattendtheNationalStorytellingYouthOlympics? A.Toimprovestorytellingskillswhilemeetingnewfriends. B.Tocompetefiercelywiththebeststorytellersinthecountry. C.Toearnmoneyandfame. D.Todevelopone'spersonalskillinlectureonly. 2Whenisdinnerpreparedforallcontestantscoachesandparents? A.Wednesday. B.Friday. C.Thursday. D.Saturday 3WhichofthefollowingsetsofwordsbestdescribestheGrandTorchBearer? A.competitiveambitioustalented B.respectfulresponsibleskilled C.athleticdeterminedcreative D.imaginativeindividualisticpessimistic 4Whatistheauthor'sattitudetowardstheactivity? A.Critical B.Positive C.Neutral D.Indifferent
如图AB为⊙O的直径点C在⊙O上若∠ACO＝50°则∠B的度数为
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. 壇加在缺词处加一个漏字符号︿并在其下面写出该加的词. 刪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限一词. 2.只允许修改10处多者从第11处起不计分. Smartphoneappscertainlymakeourlifeeasier.Currentitlooksasiftheycanevenhelpusourhomework.Awidevarietyofappsaimatstudentshavebeenreleased.Mostoftheseappsallowsuserstotakeaphotoofmyschoolworkandthecorrectanswerswilljustappearontheirsmartphones.Convenientalthoughtheyaretheseappspresentproblemstobothparentsandteachers. Moststudentsjustcopytheanswersfromtheappswhileonlyafewusetheappstostudy.What'sbadsomestudentsevenusethestudyaidappsassocialnetworks.Howeverwearenotmakingthesuggestionthatstudyaidappsshouldbecompletelyban.Parentsandteachersshouldgivenecessaryguidancetohelpstudentstaketheadvantageofstudyaidapps'strengthsandavoidtheirweakness.
Everyyearabout75000GreatWhitePelicansflyawayfromEasternEurope'scoldwintertoEastAfricawheretheyspendthesummer.It'salongjourneyandthemainstopisinIsrael. TheGreatWhitePelicanisahugebird.It'sthelargestbirdintheworldtomakesuchalongjourney.Itsdietismainlyfishanditeatsabout1.4kiloseachday. Thepelicanslovetogatherinlargenumbers.Untilrecentyearstherewereplentyofwatersupplies供给inIsrael.FrequentlythepelicansarriveinIsraeltired.Theycannotcontinuetheirlongjourneyuntiltheyhaverested.Howeverforavarietyofreasonsthesewatersupplieshavedriedupandthepelicanshavehadtofindotherfoodsources. FishfarminghasbecomebigbusinessinIsrael.Asyoumayimagineafishfarmissomethingpelicanscouldusuallyonlydreamof!InthesummermonthswhentheGreatWhitePelicanspassedthroughIsrael'sfishfarmersbegantolosetonsoffish.Somefarmswereevenforcedtoclosetheirbusiness.Somethinghadtobedone. TheIsraelMinistryofAgricultureconsideredtheproblemcarefully.Howcoulditstop75000hugepelicansfromarrivinginIsrael?Itdecidedthiswasnotpossible.Itchoseaplacewithaplentifulsupplyofwaterandprovidedmoneyforlocalfarmerstobuyfoodwhichtheyfedtothepelicans.Thepelicanssoonunderstoodthisandnowarriveattheplacetofeedandrest.Theynolongerhavetorelyonthefishfarmsforfood. It'sasolutionthatseemstohaveworked.AtonepointitlookedasiftheMinistrywouldstopthemoney.Onecriticism批评wasthatwithsomuchfoodthepelicanswouldneverleaveandwouldbecomeevenmoreexpensive.Howevertherewassuchoutcryfromenvironmentalistsandfarmersthatthemoneyremains. PerhapstheirlargenumbersinIsraelwillattractbirdwatchersfromallovertheworldtovisittheamazingsightandtourismcanbringnewincometothecountry. 1WhatcanwelearnaboutGreatWhitePelicans? A.Theyareloners. B.TheywinterinIsrael. C.Theyaregoodatlong﹣distanceflying. D.Theyreducetheirintakeduringtheirjourney. 2Whatproblemdidthefishfarmersface? A.Thepelicansdamagedthelocalenvironment. B.Theirfarmswereclosedbythegovernment. C.Thewatersupplieswerenotenough. D.Theysufferedaheavylossoffish. 3Whatmeasuresdidthegovernmenttake? A.TheypreventedthepelicansstoppinginIsrael. B.Theyencouragedfarmerstodeveloptourism. C.Theygavefarmersmoneytofarmmorefish. D.Theyfoundanewplaceforthepelicans. 4Whatistheauthor'sattitudetothepelicansinIsrael? A.Optimistic. B.Unclear. C.Doubtful. D.Unconcerned.
如图所示是一个三棱柱纸盒．在下面四个图中只有一个展开图是这个纸盒的展开图那么这个展开图是
如图在△ABC中DE∥ABDE分别与ACBC交于DE两点．若AC＝3则DC＝．
计算﹣2﹣π﹣0+|﹣2|+4sin60°．
如果a2﹣2a﹣1＝0那么代数式a﹣3a+1的值是
如图在平面直角坐标系xOy中过点A20的直线ly＝mx﹣3与y轴交于点B． 1求直线l的表达式 2若点C是直线l与双曲线的一个公共点AB＝3AC求n的值．
实数abcd在数轴上的对应点的位置如图所示下列结论①a＜b②|b|＝|d|③a+c＝a④ad＞0中正确的有
在平面直角坐标系xOy中我们把横纵坐标都是整数的点叫做整点．已知点A04点B是x轴正半轴上的点记△AOB内部不包括边界的整点个数为m．当m＝6时点B的横坐标a的取值范围是．
抛物线My＝ax2﹣4ax+a﹣1a≠0与x轴交于AB两点点A在点B左侧抛物线的顶点为D． 1抛物线M的对称轴是直线 2当AB＝2时求抛物线M的函数表达式以及顶点D的坐标 3在2的条件下直线ly＝kx+bk≠0经过抛物线的顶点D直线y＝n与抛物线M有两个公共点它们的横坐标分别记为x1x2直线y＝n与直线l的交点的横坐标记为x3x3＜4若当﹣2≤n≤﹣1时总有x1﹣x3＜x3﹣x2＜0请结合函数的图象直接写出k的取值范围．
Mytwo﹣andfour﹣year﹣oldboyslove﹣towinwhetherthey'reracingtheirbikesdownthesidewalkorjustfinishingtheirsnacks.It'struethatthosewithhighstatusfromworldleadersandprizewinnerstoathletesandmoviestarsarepeoplewelikeanclrespect.ArecentstudypublishedinNatureHumanBehaviourshowedthatweseemtohaveaninate天生的preferenceforhigh﹣rankingpeople﹣butonlyifthosepeoplearen'thurtfultowardothers. Researchersshowedtoddlersaged21to31monthsascenewheretwopuppets木偶approachedoneanotherfromoppositesidesofastageandonebowedtolettheotherpassfirst.Askedwhichpuppettheylikedbetter180fthe21toddlersintheexperimentreachedforthepuppetwhohadbeenallowedtopass.Becauserespectfromothersisamarkerofstatusthissuggeststhatchildrenhaveapreferenceforthosewithahigherstatus﹣evenbeforeagethree. Howevertheresultswerequitedifferentwhentwopuppetsapproachedoneanotherandoneusedforcetoknocktheotherdownbeforecontinuingtotheotherside.Inthiscase180fthe21toddlersreachedfortheonewhowasknockeddown.AstheresearchersconcludedWhenapproachingothersveryyoungchildrencarenotonlywhowinsbutalsohow.Thepreviousexperimenthasshownthattoddlersknowaboutsocialstatus9butthisexperimentwentonestepfurtherbyprovingtheyhaveanobviouspreferenceforhighstatus.Sincetheparticipantsweresoyoungthismightevenbeaninnatehumanpreference. Inawordthisnewresearchsuggeststhatyoungchildrenappreciatepeoplewhodowellwhileatthesametimedoinggoodtoothers.Sowhenmyfour﹣year﹣oldthinksthathehastogethisshoesonfirstI'llkeepremindinghimthathelpinghisbrothersotheybothfinishfasteriswhatwinningisallabout. 1Whatdowetendtodoaccordingtothefirstparagraph? A.Seekchallengesallthetime. B.Admirehigh﹣rankingpeople. C.Takeadvantageofhighstatus. D.Hurtotherswithoffensivewords. 2Whydidtoddlerspreferthepuppetallowedtopass? A.Itlookedlovely. B.Itbehavedsmartly. C.Itseemedpolite. D.Itwasrespected. 3Whatcanweinferfromthelatterstudy? A.Slowerpeoplearebetterlovedbytoddlers. B.Peoplenaturallydislikeunkindbehavior・ C.Toddlerscarelittleabouthighsocialstatus. D.Beinghelpfulcontributestobeingsupported. 4Whatshouldwedowhenweencouragechildrentowin? A.Instructthemtouseproperandcreativeways. B.Advisethemtobeashardworkingaspossible. C.Remindthemtobeconsideratetootherpeople. D.Tellthemtotrytocooperatewithsomeoneelse
分解因式12m2﹣3＝．
已知一元二次方程x2﹣4x+k＝0有两个不相等的实数根 1求k的取值范围 2如果k是符合条件的最大整数且一元二次方程x2﹣4x+k＝0与x2+mx﹣1＝0有一个相同的根求此时m的值．
假定你是某国际学校的学生会__张强.为配合你校正在开展的体育运动周活动请你用英语写一封倡议书号召全校同学积极参加体育锻炼. 注意词数100左右开头和结尾己给出但不计入总词数. Dearschoolmates CouldIhaveyourattentionplease? Thanks.
Whatdoesitreallymeantobesuccessful? 1.Itisaboutbeingabletoliveahappylife. Ifyouwanttohaveasuccessfullifeherearethreethingsyouneedtofocuson. ©Believeinyourself Ifyoudon'tbelieveinyourselfhowdoyouexpectotherpeopleto?Whenyoubelieveinyourselfitfuels促进yourcreativityandyourmotivation动力todothings.AllsuccessfulpeoplefromGandhitoTeslabelievedinthemselves.2.Weallhavetotrustthatwehavetheabilitytoturntheimpossibleintothepossible. ©Knowyourintention 3itisimportanttohaveanunderstandingofyourintention.Ifyourintentionissimplyrootedinmoneyandfameyouarenevergoingtotrulyfeelsuccessful.Moneyandfameonlyservetheego自负anddon'tprovidetruefeelingsofsuccess.Foratrulysuccessfullifeyourintentionhastoberootedinyourpurposeandpassions热情.Whenyourintentionistoserveyourpurposemakeachangeintheworldandexpressyourtalentsyouwillfeeltruesuccessandsatisfaction. ©4 Successisallaroundyourightnow.Stoptotakeamomentandyou'llnoticetheamazingsuccessthatisalreadypresentinyourlife.5.Beingthankfulforthetiniestsuccessesinlifewillhelpyoutocreatemoreandmoresuccess. A.Realizeyouarealreadysuccessful B.Discoverthetruemeaningofsuccess C.Thisiswhatgavethemthedrivetosucceed D.Ifyouwanttocreateagoodlivingcondition E.Whenitcomestoachievinggreatnessinthislife F.Thatiswhenyouwillstarttofeeltrulysuccessful G.Successissomuchmorethanjustmoneyorfame
2022年在北京将举办第24届冬季奥运会很多学校都开展了冰雪项目学习．如图滑雪轨道由ABBC两部分组成ABBC的长度都为200米一位同学乘滑雪板沿此轨道由A点滑到了C点若AB与水平面的夹角α为20°BC与水平面的夹角β为45°则他下降的高度为米．
2019SummerCampandActivitiesGuide SummerStarsProgram Thisseven﹣weeksummerprogramisforchildren18monthst05yearsold.Thechildrentakepartinactivitiessuchassportsmusicartstorytimeanddailywaterplay.Thereisathree﹣dayoptionfortoddlersaged18t030months.Two﹣year﹣oldsmaychooseathree﹣dayoptionorattendfivemorningsaweek.Three﹣tofive﹣year﹣oldsmaychooseahalf﹣day9am﹣12noonoptionorafulldayoptionfrom9am﹣2pm BethElDayCamp Itistheplacetobeforchildrenaged2﹣8!HavefunwithusfromJune27toAugust21.Weofferbeforeandaftercampcarefrom7amt07pm.CamperslovethesportsespeciallytennisswimmingtwiceadayinthepoolmusicartsandcraftscookingdancingnatureSTEMyogaandmuchmore!Wehavelocalbest﹣trainedprofessionalstaff. TheHouseofSports Theweeklysportscampoffersprogramsforchildrenofallagesandabilitylevel.Foryoungercampersweofferamulti﹣sportcampincludingbothlearningandplayingavarietyofsportseachday.Forchildrenin3rdgradeandolderwealsooffersportspecificcampsinlacrossebasketballsoccerandbaseball.Allcampstakeplaceina100000squarefootclimatecontrolledfacility设施inArdsleyandallcampsarestaffedbyprofessionalcoachesandinstructors. SummerPlayPlaceCamp Itoffersyoungchildrenauniqueseven﹣weeksummerexperience.Theprofessionalcertifiedstaffprovideartsandcraftswaterplaystoriesgamessportsandsnackswithinalovingenvironment.The3'sand4'sprogramisimprovedbyspecialistsinmusicmovementandnatureandspecialthemedays.Thereareseparationclassesandclasseswithalovedonetostayasoptionsforchildrenwhowillbeenteringa2'sprograminSeptember.Yourchildrenwilllearnandlaugh.Clickheretoregister. 1WhatcancampersdoatSummerStarsProgram? A.Havefuncookingalone. B.Playwithwaterfortwomonths. C.Enjoythestorytime. D.UsethefacilityinArdsley. 2Whatdothelastthreehaveincommon? A.Theyareintendedforadults. B.Theymainlyfocusonlearning. C.Theyoffervariousfreesnacks. D.Theyhavequalifiedemployees. 3Fromwhichisthetextmostprobablytaken? A.Awebsite. B.Aresearchpaper. C.Anewspaper. D.Atravelmagazine
如果代数式有意义那么实数x的取值范围是
Apigsavedfrombeingkilledattheeleventhhour1beaworld﹣famousartistsofar.Pigcassoassheisnowknownwas2luckyrescuedwithhersisterRosiewhenshewasjusttwomonthsold. AnimalwelfarecampaignerJoanneLefsontookthemtoafarminFranschhoeknearCapeTown.3thebaseforherrescuepetcharitySanctuarySAwasstillbeingbuiltShenoticedtheyoungPigcassopicking4workman'spaintbrushesinhermouth.5shockasMsLefsonwasshedecidedtogivePigcassoacanvas油画布. Nowattheageofjust21monthsoldshe6believetobetheworld'sonlypaintingpigandhassoldoneofher7workforasmuchas£1700.Despiteselling44paintingsacrosstheUKUSASouthKoreaandMalaysiaMsLefsonsaysinmanywaysPigcassoisjustaregularpig.HermostexpensivepieceBrexitwhichfeaturesaroughrepresentationofthewordinthecoloursoftheBritishflagwassoldtoaDutchcollectorfor£1730. Pigcassosignseachcanvasby8diphersnout鼻子inamixtureofbeetrootjuiceandacrylicpaint.But9pigsdon'tknowistheconceptofcolour.ThereforeMsLefsonselectswhichpainttousebeforelettinghercreativityflow. Herownersayssheoftentakes10inspirefromhersurroundings・
在平面直角坐标系xOy中有不重合的两个点Qx1y1与Px2y2．若QP为某个直角三角形的两个锐角顶点且该直角三角形的直角边均与x轴或y轴平行或重合则我们将该直角三角形的两条直角边的边长之和称为点Q与点P之间的“折距”记做DPQ．特别地当PQ与某条坐标轴平行或重合时线段PQ的长即点Q与点P之间的“折距”．例如在图1中点P1﹣1点Q3﹣2此时点Q与点P之间的“折距”DPQ＝3． 1①已知O为坐标原点点A3﹣2B﹣10则DAO＝DBO＝． ②点C在直线y＝﹣x+4上请你求出DCO的最小值． 2点E是以原点O为圆心1为半径的圆上的一个动点点F是直线y＝3x+6上以动点．请你直接写出点E与点F之间“折距”DEF的最小值．
如图在平面直角坐标系xOy中点A的坐标为21如果将线段OA绕点O逆时针方向旋转90°那么点A的对应点的坐标为
如图半圆O的直径AB＝5cm点M在AB上且AM＝1cm点P是半圆O上的动点过点B作BQ⊥PM交PM或PM的延长线于点Q．设PM＝xcmBQ＝ycm．当点P与点A或点B重合时y的值为0 小石根据学习函数的经验对函数y随自变量x的变化而变化的规律进行了探究． 下面是小石的探究过程请补充完整 1通过取点画图测量得到了x与y的几组值如表 2建立平面直角坐标系描出以补全后的表中各对对应值为坐标的点画出该函数的图象 3结合画出的函数图象解决问题当△PBM的面积为1时PM的长度约为cm．
假定你是李华你的英国笔友Peter发邮件向你询问中国的植树节TreePlantingDay的相关信息.请你回 复邮件内容包括 1.节日日期及其主要活动 2.人们重视植树节的原因 3.建议他来中国体验. 注意1.词数100左右 2.可以适当增加细节以使行文连贯.
Foodwaterandshelter1bebasichumanneedsbutitisreportedthatthereare1.2billiononpeopleintheworldwithoutenoughhousing.Thismaychangethanks2arevolutionaryuseof3Dprinterstoconstructhouses. TechcompanyICONhasdevelopedamethodfor3createaone﹣floor60﹣square﹣meterhouseoutofcement水泥inadayfor﹩10000.Thisisasmallamountofboththetimeandcost4needtobuildasimilarconstructionusingtraditionalmethods.Thecompanyaim5bringthatcostdownto﹩4000perhouse.Atraditionalhousewouldbemuch6expensivethanthat.Theaffordabilityofthesehousesmakes7theymuchmoreaccessible可使用的tothosewholiveinpoorareas. ICONhasteamedupwithNewStoryanon﹣profit非营利的organization8focusesonfindinginternationalhousingsolutions.Togethertheywillstartbuildinghomesindevelopingcountries. Thistechnologyisan9amazesolutionforthosewhoareinneedofshelter.10isalsopossiblethat3D﹣printedhouseswillbecomecommoninrichercountriesinyearstocome.
FormorethantwohundredyearstheWhiteHousehasstoodasasymboloftheUnitedStatesPresidencytheU.S.governmentandtheAmericanpeople.In1790PresidentGeorgeWashingtondeclaredthatthefederalgovernmentwouldresideinadistrict''notexceedingtenmilessquare…ontheriverPotomac.AspreparationsbeganacompetitionwasheldtofindabuilderofthePresident'sHouse.NineproposalsweresubmittedandtheIrish﹣bornarchitectJamesHobanwonthegoldmedalforhispracticalandhandsomedesign.ConstructionbeganwhenthefirstcornerstonewaslaidinOctoberof1792.AlthoughPresidentWashingtonmonitortheconstructionofthehouseheneverlivedinit.Itwasnotuntil1800whentheWhiteHousewasnearlycompletedthatitsfirstresidentsPresidentJohnAdamsandhiswifeAbigailmovedin. AmericanpresidentscanexpresstheirindividualstyleinhowtheydecoratethehouseandinhowtheyreceivethepublicThomasJeffersonheldthefirstinaugural就职典礼openhousein1805manyofthoseWho.attendedtheswearing﹣inceremonyattheU.S.Capitolsimplyfollowedhimhome.PresidentJeffersonalsoopenedthehouseforpublictoursandithasremainedopenexceptduringwartimeeversince.InadditionJeffersonwelcomedvisitorstoannualreceptionsonNewYear'sDayandontheFourthofJuly.AbrahamLincolndidthesamebutthentheinauguralcrowdsbecamefartoolargefortheWhiteHousetoaccommodatecomfortablyandthisalsocreatedasecurityissue.ItwasnotuntilGroverCleveland'sfirstpresidencythatsomeeffectivecrowdcontrolmeasuresweretakentoaddresstheproblemcausedbythispractice. AtvarioustimesinhistorytheWhiteHousehasbeenknownasthePresident'sPalacethePresident'sHouseandthe''ExecutiveMansion.PresidentTheodoreRooseveltofficiallygavetheWhiteHouseitscurrentnamein1901. 1AccordingtothepassagewhichofthefollowingisNOTtrueabouttheWhiteHouse? A.TheWhiteHousehashadseveralnames. B.ThedesigneroftheWhiteHousewasanAmericanpresident. C.PeoplewerenotallowedtovisittheWhiteHouseduringwartime. D.TheWhiteHouseislocatedinadistrictnotlargerthantenmilessquare. 2Whatdoesthispracticerefertointhesecondparagraph? A.DecoratingtheWhiteHouse. B.Accommodatingthecrowdscomfortably. C.HoldinganinauguralopenHouse. D.Joiningintheswearing﹣inceremony. 3WhostartedtheconstructionoftheWhiteHouse? A.GeorgeWashington. B.JamesHoban. C.JohnAdams. D.ThomasJefferson. 4Whatisthispassagemainlyabout? A.ThedesignoftheWhiteHouse. B.ThelocationoftheWhiteHouse. C.TheimportanceoftheWhiteHouse. D.ThehistoryoftheWhiteHouse.
2018年4月18日被誉为“中国天眼”的FAST望远镜首次发现的毫秒脉冲星得到国际认证．新发现的脉冲星自转周期为0.00519秒是至今发现的射电流量最弱的高能毫秒脉冲星之一．将0.00519用科学记数法表示应为
Myfamilyisbigonbaseball.Grandpa1coachedhisteamtotwonationalgames.Fatherplayedforthreedifferentcollegesandwas2askedtotryoutfortheLosAngelesAngelsoneofthetopteamsintheUS.MinutesbeforeIwasbornmy3werewatchingalivebaseballmatchonTVYoucouldsayIwas4toplaythegamebutfranklyallthrough.elementaryschoolIhatedit. Ispentmostdaysofmysummeratthebaseballparkinmyneighborhood.Ireallyshouldhavebeen5atbaseballforIpracticedalmosteverydaybutIwasnot.Iwouldn'thittheballhardorthrowit6.WhenmydadorgrandpaaskedmeifIwantedto7myanswerwasalwaysno.Finallytheystoppedgivingmea8justmakingmeplaywhetherIlikeditornot. Thissameold9continuedforyears.MydadandgrandpawouldmakemepracticeandIwouldputno10inuntilaroundGrade10.Iwasolderand11thanmy12﹣year﹣oldself.Ifinally12theirtruemotiveitwasn'tbecausetheywantedmetoimprovebutbecausetheywantedto13timewithme.Theywerejusttryingtosharea14partoftheirlifewithmeand15meinsomethingthathadbeeninthefamilyforever.16Igot.thisIstoppedtreatingitasworkand17itasabondingexperience. NowIoften18toplaybaseballwithmydadorgrandpa.The19practicesandtoughloveIgotfrommy20taughtmeausefullifelessonfindoutwhysomeonedoessomethingbeforejumpingtoconclusions. 1A.fairly B.successfully C.naturally D.accidentally 2A.still B.seldom C.even D.yet 3A.parents B.coaches C.doctors D.neighbors 4A.ordered B.prepared C.honored D.born 5A.amazed B.disappointed C.great D.mad 6A.casually B.accurately C.regularly D.clumsily 7A.practice B.relax C.leave D.quit 8A.reply B.reason C.chance D.choice 9A.project B.business C.routine D.policy 10A.effort B.wealth C.promise D.trust 11A.calmer B.smarter C.happier D.kinder 12A.searchedfor B.focusedon C.benefitedfrom D.figuredout 13A.save B.waste C.spend D.set 14A.normal B.special C.short D.general 15A.include B.spoil C.test D.judge 16A.Before B.Although C.Unless D.Once 17A.expected B.described C.treasured D.recognized 18A.fail B.offer C.forget D.hesitate 19A.forced B.regretted C.disturbed D.ended 20A.team B.school C.neighborhood D.family
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