数学寒假作业答案(内蒙古少年儿童出版社)八年级(初二上学期)大题谢谢了,大神帮忙啊
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数学寒假作业答案(内蒙古少年儿童出版社)八年级(初二上学期)大题谢谢了,大神帮忙啊
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这是英语 一)一、sendtruepiecesadvicebreath二、CBBAABCCCC三、BBAACCBCCB 四、improvingcountingHavevisitedhavefinisheighth五、writeddown(enjoyyourself)hasbeensendaskfor六、Wherehaveyoubeen?Whatdidyoudothere?Whataretheyabout?Yes,itis.Howisit?七、DCBABFTFTF八、travellingbeenlikeshastookbothenjoydilicioushadhaven't (二)一、flewcenterplanetsoldfell二、(hasgone)(haveworked)didn't(toplay)(havewatched)三、experienceinvitedtriedprizeenter四、CCABDADCBA五、CABCDCBCDD六、(heardof)(lookafter)(onearth)(wasdoing)(growup) 七、Whatisit?Howdidhecameback?TheProjectHopehasraisedmuchmoney. Cantheylearnwell?Goodidea.八、Becauseithaseverythingweneedtolive.No,itisn't.Becausetheyarefarfromus.Eight.Yes,theydo.ABBCC九、teacherschoolchildrenmen'sanswerhappenedheardbecomesolder (三)一、countrySuddenllyseriouscomposeracross二、BCDABADCCA三、ABCADAABDA 四、worried(wasreading)is(tokill)(tobe)五、proudoffeltsadafraidoftakingliveontoinvite 六、HowcanIgettoschool?howcangettoschool(没打错,就是写两遍)Isitfarformthere? HowcanIgettothere?Thankyou七、DCDCCCCBC 八、fromcareawaylonelyquiettakeenjoyholidayjourneybecause (四)一、mattersmellssoftintroducetight二、BCAACABABD三、ABCCDABCAD 四、lovelygets(toteach)(totake)havelosed五、fellwithtakesplacecan'tspeakhearsingingtakephotos 六、Whoishe?Whenwasheborn?Howlonghadheplayed?Whendidhestarttoplay?Yes,hedid. 七、DBABCDCADB八、thinksplacesfoundputtingcamequietopenedwatchesother (五)一、oppositebetweencentremarketChairman二、BBABCABBAB 三、tellturnfarminuteswaynextaboutWhichthankspleasure四、BCABCACBBB 五、EDABC六、quitebecausequietothermistakes (六)一、protectdangerreservesurepeace二、AABBABCCBA三、CBAABBCCBB 四、surprisallaugh(toread)(tocatch)using 五、Canweplantingtreestomorrow?Howdoyouknowit?Whereisyourhome?Seeyoulater 六、BABCDpresentimportantAnotherpoliteuseaskmakesorrybrokenforgive 七、whiteonlyageHowevergettingdangerbuiltforlive (七)一、(tocome)lostimpossiblefamoussent二、ABCACBCACA 三、been(Ihaven't)famousOperadrinkthinkCanwhoreadwriter 四、holidaySundayOnhonorwisheslivedlovelettersmothers五、People'sSquare120,000sixlibrarySaturdays Whenwasheborn?像一个小男孩一样,他过着愉快的生活OHenrywasbelievedtohavestolenmoney Itmadereadersverysurprised.六、aboutkoalashaswherecarebuildNothanbabybig (八)一、lostimpossibleaskedexcitingcustomers二、ACBAACCCAA 三、Whatisshelike?Whatishelooklike?CanImakefriendwithhe?Howisshe?Oh,I'msorrytohearthat. 四、can'tdependonIt'spleasedmaybecoldIt'spossibleMakesure 五、ACBCCCBACC六、ABCCAinHecan'tspeakEnglish.Thewaitersoonbroughtacupofteatohim.(todrink)C 物理答案:p1.振动声带空气风300高大声源入耳传播保护环境影响休息和学习AADBBACP3乙振动固体响度音调减少噪音响度音色音调声波能量476振动响度丙甲ACCDB闹钟不响了真空不能传声略每秒640米光年光的直线传播3*10的8次方慢反射反射60120度4.05*10的8次方日食ADAA画图略P760度0度40度直线月亮光路可逆性反射角变小BCDDC画图略13.由长变短再变长P9真空3*10的8次方空气>水>玻璃由长变短再变长7牛顿色散12相等入射角FHHDHBBDCA光的直线传播平面镜成像光的折射画图略P1145度60度凹面会聚凸面镜发散光的直线传播三原色太阳红黑DADABD【光从空气斜射入不同介质折射角度不同折射角小于入射角】物因为蜡烛在燃烧样子会改变13正立放大的虚像近30凸80实10同一高度对照0远离凸透会聚BBACAA凸透镜光屏同一水平面10向左缩小倒立实向右放大倒立实不成像正立放大虚像焦距用刀把冰削成凸透镜会聚阳光起火P15凸透倒实大于2f倒立缩小实照相机晶状体视网膜厚强前凹40cmCAABB20猜想3是对的 P17CDBABCDADC画图略 P19113升华熔化液化凝华凝固汽化液化固上升固液共存不变液上升648温度增加真空压缩体积CBCCBA吸热降温制冷P21连线10036.50105-1024升华酒精-2升华凝华液化小水滴BCAAC因为酒精的凝点比水银低煤油的沸点比酒精的沸点高同种适当画图略因为黑色能吸七色的光P23液化融化吸热蒸发吸热低凝华吸BABBAC综合能力题BADEC外面冷里面热里面的水蒸气液化在内侧反之外面热里面冷外面的水蒸气液化在外侧P25并联串联电负正等于短路CaA1780m支路正负0.240.541.22.7CDDBDCC摩擦发生了静电P27正负正1比150串200m把电导入地下正负接线柱接反了试触较大的接线柱0.5ADBBB结论正确错误不填多实验几组避免偶然性电流过大正负接线柱接反了变少画图略P29L1L2L3串L1L2L3并L30.2A0.2A串流电路电流相等A3 A2A0.4A0.5A1.5ABBBCD画图略 数学答案: 一、选择 P1,CDBDDP3,DDBDCCAP5,ABBDCP7,CDDBCCP9,BBBCAAP11,DDCCCB P13,CCBCCADCBBP15,BABDBADAP17,CDBCAABCP19,CACBABDP21,CADCDACCCCP23,BCADDCBCAB P25,BBBBBACDAP27,CABACDBCP29,DBCCABCCC 二、填空 P1,95度∠C=∠D74度1P3,8.∠B=∠DAB=FD9.AC=BDAO=BOOC=OD∠A=∠B∠C=∠D∠AOC=∠BOD ∠AOD=∠BOC10.BE=CF11.2CM2CM12.△ABD=△ACE P5,637535°∠B=∠DEF或AC=DF70°P7,010011530° P9,关于x轴对称90(-1,2)略P11,12cm7030°2a+655度1 P13,正负27m<0、根号20.6P15,根号2-根号5根号5-根号25140、1>< 根号2和“2-根号2” P17,S=100π-rπ0<r<10y=4x二分之三、1y=50+4x(x大于或等于0)-1、12、18、14、8、自己编 P19,-1(6,0)(0,3)9k>02,≠-160四分之三20,4+4n P21,23<100,甲,8,-2小于或等于k<011y1>y2 P23,>-2<-2=-2小于或等于2x=三分之四y=1>-3<-3 P25,大于或等于负三分之五且不等于4y=x(1,0)负三分之八2y=三分之一x—4或y=负三分之一x—3k甲>k乙x>-1 只有这么多,回来再发,多给分
数学寒假作业答案(内蒙古少年儿童出版社)八年级(初二上学期)大题谢谢了,大神帮忙啊
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