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blackcloudsinthesky!Ithinkit'sgoingtorain. A.What B.Whata C.How D.Howa
聚合氯化铝[Al2OHmCln]是一种新型净水剂经分析其中氢元素氯元素质量比＝271则
硫酸锌可用于制造锌钡白印染剂等．用锌白矿主要成分为ZnO另有Fe2O3CuOSiO2制取ZnSO4•7H2O的流程如下 资料SiO2不与酸反应． 1流程中操作是滤渣的主要成分是为提高锌元素的浸出率的措施 有适当提高酸的浓度填一种． 2滤液I中加入锌粉生成铜反应方程式为该反应属于反应填基本类型． 3滤液Ⅱ中发生反应是2KMnO4+14X+6FeSO4+9H2SO4＝6FeOH3+2MnO2+14ZnSO4+K2SO4X的化学式为． 4母液中的溶质有．
Weoftenhearchildrenwishingtheyweregrown﹣ups.Andoldpeoplewishtheywere1again.Eachagehasits2anditspainsandthehappiestpersonalwaysenjoyswhateachage3himwithoutwastinghistimeinuselessregrets. Childhoodisatimewhenthereare4responsibilitiestomakelifebetter.Ifachildhasgood5heisraisedlookedafterandlovedwhateverhemaydo.Itis6thathewilleveragaininhislifebegivensomuchwithouthavingtodoanythinginreturn.Butachildhas7pains.Heisnotso8todoallthathewishestodo.Heisagainandagainbeingtoldnottodosomethingorbeingpunishedfor9hehaswronglydone. Whenayoungmanstartstoearnhisownliving谋生hecannolongerexpectothersto10hisfoodhisclothesandhisroombuthehastoworkifhewantstolive11.Ifhespendsmostofhistime12inthewaysthatheusedtoasachildhewillgohungry.Andifhebreaksthelawsofsociety13heusedtobreakthelawsofhisparentshemaygotoprison监狱.14ifheworkshardkeepsoutoftroubleandhasgoodhealthhecanhavegreathappiness.Hecanalsobuilduphisownpositionin15forhimself. 1.A.new B.young C.active D.strong 2.A.loneliness B.wishes C.sadness D.pleasure 3.A.lets B.hopes C.makes D.gives 4.A.few B.many C.little D.much 5.A.friends B.parents C.teachers D.sisters 6.A.impossible B.natural C.common D.harmful 7.A.its B.your C.her D.his 8.A.free B.weak C.wrong D.right 9.A.when B.what C.that D.who 10.A.thinkabout B.payfor C.talkabout D.puton 11.A.comfortably B.freely C.peacefully D.sadly 12.A.playing B.thinking C.worrying D.writing 13.A.since B.as C.and D.but 14.A.Luckily B.Possibly C.Unluckily D.However 15.A.society B.school C.home D.office
Courageistheabilitytobebraveindifferentsituationsinourlife.Hereandtherenowandtheneveryoneneedscouragetodosomethingwell.Couragemaymakeyouconfidentofyoursuccess.Ifyouhavecourageyouwillnotshowfearinfaceofanythingdifficultordangerous.Withcourageyoumaylookatsomeoneintheeyewhoyouhavewronged冤枉andsayIamsorryyoumaykeepsmilingevenifyouareseriouslyillandknowyouareattheendofyourlife. Howcanwebuildupourcourage? 阅读以上信息用恰当的词完成下面的短文每空一词. Courageistheabilitytobebraveindifferentsituations.Itisimportanttoeveryone.Withcourageyouwillfeelconfidentofyoursuccesswithcourageyouwon'tbe56ofanythingdifficultordangerouswithcourageyoumaylookatsomeoneyouhavewrongedintheeyeandsaysorrytohimorherwithcourageyoumaykeepsmilingevenifyouareseriouslyill. Herearesomeuseful57tobuildupourcourage. Firstbelievethatyou'll58.Takechancesandknowthatyouhaveyourowntalents. Secondexerciseyourcourage.It'sjustlikethemuscle.Themoreweusecouragethe59 wewillget. Thirddon't60togiveupalthoughit'smucheasiertodosoandyouneedcouragetosayordowhatyouthinkisrightevenwhenothersthinkyouarewrong. Finallyreadinspiringstoriesofbravepeople.AbrahamLincolnissuchakindofperson. 56. 57. 58. 59. 60.
香蕉是生活中常见的水果每100g香蕉中营养成分的含量如下表 1香蕉中可以为人体提供能量的营养物质有蛋白质脂肪和香蕉中的营养物质可以防止牙龈出血． 2上表中的钙铁钾磷指的是填字母． A．分子B．单质C．元素 3维生素E的化学式是C29H50O2相对分子质量为． 4香蕉在种植过程中需要施用一定量的可溶性盐作为锌肥以下可用于农业中锌肥的是填字母． A．ZnSO4B．ZnOH2C．Zn
﹣Weraisedalotofmoneyatthecharityshow.﹣Exactly!Thereisusefulsaying'Manyhandsmakelightwork.'A.a B.an C.the D./
﹣Jackhowareyoufeelingtoday? ﹣Even.Idon'tthinkIcangotoworktoday. A.better B.worse C.brighter D.happier
The每周的TVshowReadershostedbyDongQinghasrecentlybecomeahottopicinChina.
2018年12月8日我国成功将“嫦娥四号”探测器送入太空开启月球探测新旅程． 1“嫦娥四号”的双翼是光伏电池在工作时可将能转化成电能． 2“嫦娥四号”上使用的国旗是由一种叫聚酰亚胺的塑料制成这种材料属于填序号 a．无机材料b．有机合成材料c．复合材料 这种塑料制成的国旗与传统的丝绸国旗相比突出的优点是． 3“嫦娥四号”搭载的一枚棉花种子发芽了发芽后的种子在人造环境中进行光合作用的化学方程式是． 4“嫦娥四号”带回的月球矿产资源标本之一氦﹣3是理想的核聚变反应堆原料氦﹣3和氦﹣4都属氦元素因为这两种原子具有相同的．
小朱同学分别用溶质质量分数为3.65%0.365%0.0365%0.00365%的稀盐酸各30mL分别与不同浓度的NaOH溶液反应测定4个反应过程中的pH绘制成如图象． 1写出实验时发生反应的化学方程式用溶质质量分数为3.65%的稀盐酸进行实验时溶液温度的变化是 2曲线c代表的实验所用的是ω＝的稀盐酸加入20mLNaOH溶液时溶液中主要存在的离子是填离子符号． 3曲线a代表的反应在P点后对应的曲线是填①②③④．
﹣Doyouthinktheofthecomputersuitsme? ﹣Ofcourse.It'scheaperthanIthought. A.price B.color C.size D.type
Ourchildrenandgrandchildrenmaynothaveachancetovisitmanyofthemostfamousplacesaroundtheworld.Warweatheragetrafficandpollutiondamage破坏thesefamousplaces.Ifwedonothingtheymayevennolongerremain.Butlookingaftertheseplacesoftencostsmorethanonecountrycanafford. Intheearly1970sworldgovernmentsdecidedthatiftheyjoinedtogethertheywouldbeabletopreserve保护ourhistory.Ifeverycountrypaidsomemoneytheysaiditwouldbepossibletolookafterimportanthistoricplaces.ForthisreasoncountriesaroundtheworldunitedtoformtheWorldHeritageOrganizationin1972.Todaytheorganizationhelpstoprotectandrebuildthemostimportantplacesfromourhistory. Howeveroneofthebiggestproblemsforhistoricplacesisvandalism.Thatistosaypeoplesometimesentertheseplacesanddamagethebuildings.AtsomeplacessuchasStonehengeinEnglandgovernmentshavebuilthighfencestoprotectitfromvandals. Therearemanydifferentideasabouthowtosolvetheproblemofvandalism.Someprofessorssaythatifguardskeepwalkingaroundtheseplacesvandalswon'tbeabletogetin.Someprofessorssaythatiftheyfixmoretelevisioncamerastheywon'tneedsomanyguards.Otherssaythatthebestwayiseducation.Ifpeoplelearntorespecthistorytheywon'tdamageit.Theywillalsowanttospendmoneylookingafteroldplaces.ForthisreasontheWorldHeritageOrganizationhelpstospreadinformationaboutthevalueofhistoricplaces. 32.Ourchildrenandgrandchildrenmaynothaveachancetovisitmanyofthemostfamousplacesaroundtheworldprobablybecause. A.theydon'thaveenoughmoneytogothere B.theseplacesmaydisappearinthefuture C.governmentsdon'tallowthemtoenter D.theyareafraidoftheguardsthere 33.TheWorldHeritageOrganizationwassetupforthefollowingreasonsEXCEPT. A.Itwouldbeabletohelppreserveourhistory. B.Nocountrieswantedtoprotectthehistoricplaces. C.Itwouldcollectmoneytorebuildthedamagedplaces. D.Itwouldbepossibletotakecareofimportanthistoricplaces. 34.Whichofthefollowingshowsustheactionofvandalism? A.Peopleentertheplacesanddamagethebuildings. B.Governmentsbuildhighfencestoprotecttheplacefromvandals. C.Guardswalkaroundtheseplacesandfixmoretelevisioncameras. D.Warweatheragetrafficandpollutiondamagethesefamousplaces. 35.What'sthebestwaytosolvethebiggestproblemofvandalism? A.Tospendmoremoneylookingaftertheseplaces. B.Tomakeguardspreventvandalsgettingin. C.Tofixmoretelevisioncamerasintheseplaces. D.Tomakepeopleknowaboutthevalueofhistoricplaces.
﹣Kittyisverygoodatmusicalinstruments. ﹣Yessheis.Shecanplaytheguitaralmostherguitarteacher. A.asbetteras B.asgoodas C.aswellas D.sowellas
Aftertheteachersharedthemovingstorywiththestudentsthewholeclassroomwasin silent.
MrYangsaidhe更喜欢readingpaperbookstoe﹣booksontheInternet.
已知在Rt△ABC中∠C=90°sinA=则tanB的值为A． B． C． D．
MyuncleregrettedhishouseinShanghailastyearbecausethehousepricekeepsrising. A.sell B.tosell C.selling D.sold
﹣Couldyoupleasetellme? ﹣Yes.Hecametostudyherejustlastmonth. A.thatheisanewstudent B.whendidhecomehere C.ifshelikesEnglishbest D.whetherheisanewstudent
﹣WhystopwalkingMichelle? ﹣Therearesomanypeoplestandingtherethatwecan'tgo. A.across B.through C.over D.on
MaryalwayshasmoredifficultythanLilyworkoutMathsproblems.
—Whichsportareyouinattheschoolsportsmeeting?—Nodecisionyet.IthinkitafterdiscussingwithmyPEteacherMr.Yuan.A.willbedecided B.willdecide C.wasdecided D.isdecided
﹣MumcanIgotowatchthemovieGuardiansoftheGalaxyVol.2tomorrow? ﹣Sureifyourhomework. A.finish B.isfinished C.willfinish D.willbefinished
﹣WillyoufixupthebrokenrobotaccordingtotheTommy? ﹣Noproblem. A.invention B.information C.instruction D.introduction
﹣Canyouhelpmewiththetext? ﹣SorryTherearesomanynewwordsthatIcanunderstandit. A.nearly B.hardly C.clearly D.easily
石灰氮是一种长效的固态肥料同时也是一种低毒无残留的农药易与水反应CaCN2+3H2O＝CaCO3↓+2NH3↑．下列有关石灰氮说法错误的是
我校化学兴趣小组的同学利用“W型管”设计如下装置并按步骤进行实验． 1点燃酒精灯观察到硫先慢慢熔化然后燃烧起来由此推测硫的熔点填≤＝＞硫的着火点硫燃烧的化学方程式为实验中观察到证明硫燃烧有新物质生成． 2在实验过程中同学们没有闻到刺激性气味由此可知“碱石灰”在实验中的主要作用是．
Jackie'slifehascompletelychangedsincehewas分开fromhisfamilytenyearsago.
26.Howmanymealsareservedduringthe4﹣daytrip? A.Four. B.Six. C.Eight. D.Ten 27.Whatcanwelearnfromthepassage? A.Therearetwoperiodsoftimewhenwearefreetodothingswelike. B.WecanvisittheGreatWallandtheForbiddenCityonthesecondday. C.WecangoandseetheTempleofHeavenandBird'sNestonthethirdday. D.It'scertainthatwecangettimetobuysomesouvenirsinthefamousXiushuiStreet. 28.Thepassageismostlikelytobetakenfrom. A.atravelguide B.aninstruction C.anadvertisement D.anewspaper
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