![在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（ ）A．“▽”形的 B...]( "在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（ ）A．“▽”形的 B...")
- 问题详情：在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（）A．“▽”形的 B．圆形的 C．“△”形 D．无法确定【回答】B【考点】光在均匀介质中直线传播．【分析】因为是很小的孔，所以当太阳光照*时会形成太阳的像即小孔成像，又因...
- 4661
![在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（ ）A．“▽”形的 ...]( "在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（ ）A．“▽”形的 ...")
- 问题详情：在纸上剪一个很小的“△”形空，让太阳光垂直照*到“△”形孔上，那么地面上形成的光斑是（）A．“▽”形的 B．圆形的 C．“△”形D．无法确定【回答】B解：因为太阳离地面非常远，而小孔又非常小，所以该现象为小孔成像，即形成太阳的像（圆形的）；并且小孔成像就是利用光沿直线传播所...
- 30711
![完形填空Iamastudent.My]( "完形填空Iamastudent.My")
- 问题详情：完形填空Iamastudent.My__1__nameisDavid.MylastnameisMiller.Look!Thisisaphoto__2__myfamily.Thisis__3_father.Hisfavorite(最喜爱的)__4__iswhite.Myfavoritecoloris __5_，too.Andthisismymother.Who'sthatgirlnearher?SheismysisterJane.Mygrandparentsare...
- 14414
![完形填空Oncetherelivedtwobrothers.TheelderwascalledSimonand...]( "完形填空Oncetherelivedtwobrothers.TheelderwascalledSimonand...")
- 问题详情：完形填空Oncetherelivedtwobrothers.TheelderwascalledSimonandtheyoungerVictor.They1eachotherverymuch,andalwaystookcareofoneanother.Everydaytheyworkedfrommorning2night,gettingasmuchgrain(谷物)aspossiblefromtheirfields.Onelateautumnevening,aftert...
- 5802
![完形填空Eachoneofusissupposedtosavetheenvironment.Hundredso...]( "完形填空Eachoneofusissupposedtosavetheenvironment.Hundredso...")
- 问题详情：完形填空Eachoneofusissupposedtosavetheenvironment.Hundredsofyearsago,lifewas 1 than 2 today.Peopledidn’tusemodernmachines,andthere 3 modernmachines, 4 .Lifetoday 5 newproblems.Oneofthebiggestispollution.Waterpollu...
- 25528
![完形填空 Everycountryhasitsownculture.Eventhougheachcountr...]( "完形填空 Everycountryhasitsownculture.Eventhougheachcountr...")
- 问题详情：完形填空 Everycountryhasitsownculture.Eventhougheachcountryusesdoors,doorsmanyhave 1 functionsandpurposeswhichleadto 2 differences.WhenIfirstcametoAmerica,Inoticedthatapublicbuildinghadtwodifferent3 andtheyhadunusualfunctions.Yo...
- 7217
![完形填空。]( "完形填空。")
- 问题详情：完形填空。__1 nameisKangkang.I 2 astudentinNo.2MiddleSchool.Iam 3 ClassOne.MyEnglishteacherisMrsGao.JaneandMaria 4 goodfriends.Janeis 5 England.MariaisfromAmerica.TheyareinNo.2MiddleSchool,_6 .__7 Mariaisn’tinmyclass._8...
- 20348
![完形填空Lookatthelostandfoundcase.]( "完形填空Lookatthelostandfoundcase.")
- 问题详情：完形填空Lookatthelostandfoundcase.__1__that？It's__2_eraser.Ithink（想）it'shis__3__Ilosta__4__of__5__.Imustwrite（写）a（如果）__6__findthekeys,please__7_me__8__5556741.__9__nameisMaggieWhite._10__you!1． B．It's ...
- 27812
![完形填空 MrMillerownedabigshopinthemainstreetofasmalltown....]( "完形填空 MrMillerownedabigshopinthemainstreetofasmalltown....")
- 问题详情： 完形填空 MrMillerownedabigshopinthemainstreetofasmalltown.Hesoldjewelry(珠宝),watches,clocksandsome__1___things.Everythingwent__2____andhemadelotsofmoney.Butlastmonth,somethieves__3_____intohisshopatnightandtooklotsofjewelryaway.What’swor...
- 28572
![完形填空Manystudentslike]( "完形填空Manystudentslike")
- 问题详情：完形填空Manystudentslike________(1)verymuch.But________(2)MondaytoFriday，theymustgotoschool.SoonSaturdayandSundaythey________(3)athomeandwatchTVfrommorningtonight.Theydon'tknowit'sbadfortheireyes.Usuallychildrenliketoeatmeat.Theydon'tlikeve...
- 11914
![完形填空MylittlesisterisinGradeEightthisyear.Herfavoritesub...]( "完形填空MylittlesisterisinGradeEightthisyear.Herfavoritesub...")
- 问题详情：完形填空MylittlesisterisinGradeEightthisyear.Herfavoritesubjectismath,butshewasnotgood 1 it.Oneday,afriendofmyfather’sfromAmerica 2 himsomepicturesaboutAmericaand 3 ustohishome.MysisterwantedtogotoAmericaverymuch,butmyf...
- 20807
![完形填空AthousandyearsagoHongKongwascoveredbyathickforest.A...]( "完形填空AthousandyearsagoHongKongwascoveredbyathickforest.A...")
- 问题详情：完形填空AthousandyearsagoHongKongwascoveredbyathickforest.Asmoreandmorepeoplecameto 1 inHongKong,thesetreeswerecutdownandbu.Nowthereis 2 forestleft,thoughtherearestillsomesmallareascoveredwithtrees.Wecallthesewoods.Elephants,tigersa...
- 28776
![完形填空Aladyoncewrotealongstory.Shesentittoafamouseditor.A...]( "完形填空Aladyoncewrotealongstory.Shesentittoafamouseditor.A...")
- 问题详情：完形填空Aladyoncewrotealongstory.Shesentittoafamouseditor.After1weekstheeditor2thestorytoher.Theladywas3.Shewrotebacktotheeditor: “DearSir. Yesterdayyousentbackastoryofmine.4doyouknowthatthestoryisnotgood?Youdidnotreadit.5Isentyouthestory,...
- 29729
![完形填空。Agoodmemoryisagreathelpinlearningalanguage.Everybo...]( "完形填空。Agoodmemoryisagreathelpinlearningalanguage.Everybo...")
- 问题详情：完形填空。Agoodmemoryisagreathelpinlearningalanguage.Everybody 1 hisownlanguagebyrememberingwhathe 2 whenheisasmallchild.Someboysandgirlswholiveinforeigncountries 3 theirparentsseemtolearntwolanguagesalmostas 4 asone.Atschooli...
- 20055
![完形填空 Manyparentswanttheirchildrentobefamousoneday.Butdo...]( "完形填空 Manyparentswanttheirchildrentobefamousoneday.Butdo...")
- 问题详情：完形填空 Manyparentswanttheirchildrentobefamousoneday.Butdochildrenhavethesame___1__?Anew__2__—Hi,Ke'aiisonatBeijingChildren'sArtTheatre.IttellsthestoryofaboycalledKe'ai.Hisparentswouldlikehimtobecomeapainterora__3__oneday.Theyteachhimto...
- 31948
![完形填空。Almosteveryone]( "完形填空。Almosteveryone")
- 问题详情：完形填空。Almosteveryone__1__themeaningsofMr,MrsandMiss.Mrisusedbeforethefamilynamesofmen.Mrsisformarried(结婚的)womenandMissisforunmarriedwomen.But__２__isMs?Somebusinessmen(商人)intheUnitedStates__３__Msbeforeawoman'snamewhentheydonotknowwheth...
- 25886
![完形填空。 Theschoolmusicclubopens.Tonywants]( "完形填空。 Theschoolmusicclubopens.Tonywants")
- 问题详情：完形填空。 Theschoolmusicclubopens.Tonywants_____（1）theclub,buthedoesn’twanttogoalone﹙单独﹚wantstoaskhisfriendstogotothe_____﹙2﹚withhim.Sohe____﹙3﹚themathome,buteveryoneis______﹙4﹚.Martinisdoinghishomeworkathome.Itusually_____﹙5﹚himtwohourstofinishit...
- 31235
![完形填空Listeningtomusicandsingingsongsarefun.Butisituseful...]( "完形填空Listeningtomusicandsingingsongsarefun.Butisituseful...")
- 问题详情：完形填空Listeningtomusicandsingingsongsarefun.ButisitusefulforlearningEnglish?AteachercalledTonyBrownthinkssingingsongsisthemostuseful 1 forstudentstolearnpronunciation(发音)andstudentscanlearnsomenew 2 atthesametime.Tonyoftenuseson...
- 28849
![完形填空]( "完形填空")
- 问题详情：完形填空_1 thepopulationofChina?Therearemorethan1.3billionpeopleinChina.Itisalmostonefifthoftheworld’spopulation.Howtocontrol(控制)thepopulationgrowthisabigproblem.Somepeoplethink 2 tocontrolthepopulationgrowth,ButIdon’tquiteagree 3 ...
- 22465
![完形填空ThanksgivingisanAmericanfestival.Itiscelebrated]( "完形填空ThanksgivingisanAmericanfestival.Itiscelebrated")
- 问题详情：完形填空ThanksgivingisanAmericanfestival.Itiscelebrated__1__thefourthThursdayinNovember.Itisatimeforaspecialdinneramongfamilyandfriends.Peoplemakeshortspeechesandgivethanksfortheirfood.Wehavecelebratedthefestival__2__thefirstpioneersfromEngla...
- 23814
![完形填空。Markwasafarmer.Helivedinavillagefaraway.Onedayhebe...]( "完形填空。Markwasafarmer.Helivedinavillagefaraway.Onedayhebe...")
- 问题详情：完形填空。Markwasafarmer.Helivedinavillagefaraway.Onedayhebecameveryillandeveryoneknewhewould1soon.Theysentforadoctor.Twodays2thedoctorcameandexaminedthesickman.3askedforapenandsomepapertowritedownthenameofthemedicine.Buttherewasnopen4paperin...
- 12293
![完形填空Charliecamefromapoorvillage.Hisparentshad]( "完形填空Charliecamefromapoorvillage.Hisparentshad")
- 问题详情：完形填空Charliecamefromapoorvillage.Hisparentshad__1__moneytosendhimtoschoolwhenhewasyoung.Theboywasverysad.Mr.Kinglivednexttohim.Hefoundtheboy__2_andhadpityonhimandlentsomemoneytohim.Sotheboycouldgotoschool.Hestudiedhardand__3_allhislessons....
- 24917
![完形填空Marklivedinavillagefaraway.Onedayhebecameveryilland...]( "完形填空Marklivedinavillagefaraway.Onedayhebecameveryilland...")
- 问题详情：完形填空Marklivedinavillagefaraway.Onedayhebecameveryillandeveryonethoughthewould___1___soon.Theysentforadoctor.Twodays___2___thedoctorcameandlookedoverthesickman.__3__askedforapenandsomepapertowritedownthenameofthemedicine.Buttherewasnopen__...
- 16496
![完形填空Henrywasamiddleschoolstudent.ItwasSaturday.Therewer...]( "完形填空Henrywasamiddleschoolstudent.ItwasSaturday.Therewer...")
- 问题详情：完形填空Henrywasamiddleschoolwasewere________(1)classesthatafternoon,sohewenttoashopnearhisshopsoldmanylooked________(2)themandatlastchoseaverynice________(3)itonandthentoldtheshopkeepertoputitintoa________(4)．AtthattimehisfriendBrucecameintot...
- 32483
![完形填空。 NaturalresourcesarethingsthatweusethatcomefromE...]( "完形填空。 NaturalresourcesarethingsthatweusethatcomefromE...")
- 问题详情：完形填空。 NaturalresourcesarethingsthatweusethatcomefromEarth. Outnaturalresourcesarelimited（有限的）. Thismeansthattheywillnot 1 forever. Somearerenewable,likewhenyouplantanewtreewhenyou cutonedown. Othersarenotrenewable,likewh...
- 23355
中文谷
