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2-45编写一个程序，输入三角形的三条边的边长，求三角形的面积。2-45#include<iostream.h>#include<math.h>intmain(){inta,b,c;ints,S;cin>>a>>b>>c;s=(a+b+c)/2;S=powl(s*(s-a)*(s-b)*(s-c),0.5);if(S==0)cout<<此三边不能构成三角形！<<endl;else{cout<<面积:<<endl;cout<<S<<endl;}return0;}2-46从键盘输入一个大写字母，然后改用小写字母在屏幕输出。2-46#include<iostream.h>intmain(){charch;inta;cout<<输入一个大写字母...
Unit1WaysofLearningVocabularyI1.1)insert2)onoccasion3)investigate4)Inretrospect5)initial6)phenomena7)attached8)makeupfor9)isawaiting10)not;intheleast11)promote12)emerged2.1)astrikingcontrastbetweenthestandardsoflivinginthenorthofthecountryandthesouth.2)issaidtobesuperiortosyntheticfiber.3)asafinancialcenterhasevolvedslowly.4)isnotrelevanttowhetherheisagoodlawyer.5)byalittle-knownsixteen-century...
最全的全新版大学英语第二版综合教程2答案课后练习答案Unit1WaysofLearningPartIIReadingTaskComprehensionContentQuestionPairWork1.TheywerestudyingartseducationinChinesekindergartensandelementaryschoolsinNanjing.2.Their18-month-oldsonBenjaminwasfondoftryingtoplacethekeyintotheslotofthekeyboxduringtheirstayattheJinlingHotel.3.TheywouldcomeovertowatchBenjaminandthentrytoteachhimhowtodoitproperly.4.Beca...
《单片机原理及应用程序》（第三版）习题参考答案第一章1.为什么计算机要采用二进制数？学习十六进制数的目的是什么？在计算机中，由于所采用的电子逻辑器件仅能存储和识别两种状态的特点，计算机内部一切信息存储、处理和传送均采用二进制数的形式。可以说，二进制数是计算机硬件能直接识别并进行处理的惟一形式。十六进制数可以简化表示二进制数。2．(1)0111100179H(2)0.110.CH(3)01111001.1179.CH(4)11101010.1010EA.AH(5)01...
unit1MichaelJordanisthegreatestbasketballplayerofalltime.HewasbornonFeb.1)17,2)1963,inBrooklyn,NewYork.Heis3)1.98meterstallandweighs4)216pounds.JordanjoinedtheChicagoBullsteamforthe5)1984season.Inthe6)1986seasonheshot7)3041points,the8)thirdhighestscoreever.HewasnamedNBASlamDunkChampion(扣篮冠军)in9)1987andwontheMostValuablePlayerAwardin10)1988,anhonorrepeated11)fourtimesinthenext12)tenyearsto13...
1全新版大学英语2课后翻译题答案全新版大学英语（第二版）综合教程学生用书第2册课后段落翻译题答案Unit1Page.20短文翻译：要提高我们的英语水平，关键是多读，多写，多听，多说。此外，尽可能多背熟一些好文章也十分重要。如果你脑子里没有储存大量好的英语文章，你就不能用英语自由地表达自己的思想。一般学一边总结经验也是很有帮助，因为这样做，我们就能搞明白哪种学习方法是更有效的，能够产生最理想的效果。只要我们坚持...
Unit13MarriageKeytotheExercisesTextcomprehensionI.Decidewhichofthefollowingbeststatestheauthorspurposeofwriting.BII.Judge,accordingtothetext,whetherthefollowingstatementsaretrueorfalse.1.T(RefertoParagraph1.Theconventionalpeopledidnthavethefalselyoptimisticexpectationthatmarriagewouldbeeasy,whichcanbeseenfromtheirenthusiasticresponsetotheDontadvicewhichPunchgavetothoseabouttomarry.)2.F(RefertoP...
第一讲说真话写实事诉真情一、说真话指的是说自己想说的话，也就是把自己的心里话真实地写出来给别人看。不要写假话、空话、套话。如中央电视台的《实话实说》受到广大观众的喜爱，就在于它讲的是实话。例一：我帮小雯补习功课之后，小雯十分感动，连声说谢谢，我却淡淡一笑，说“别客气，别人有了困难就应该热心帮助，这是我应该做的。”例二：我帮小雯补习完功课后，小雯拍拍我的肩，说：“多谢，多谢，等我病好了请你吃麦当...
全新版大学英语（第二版）综合教程2课后练习答案KeytoExercisesofCollegeEnglishBook2Unit1★TextAVocabularyI.1.1)insert2)onoccasion3)investigate4)Inretrospect5)initial6)phenomena7)attached8)makeupfor9)isawaiting10)notintheleast11)promote12)emerged2.1)Thereisastrikingcontrastbetweenthestandardsoflivinginthenorthofthecountryandthesouth.2)Naturalfiberissaidtobesuperiortosyntheticfiber.3)Thecity’simpor...
本讲主要学习还原问题．通过本节课的学习，可以使学生掌握倒推法的解题思路以及方法，并会运用倒推法解决问题．1.掌握用倒推法解单个变量的还原问题．2.了解用倒推法解多个变量的还原问题．3.培养学生“倒推”的思想．一、还原问题已知一个数，经过某些运算之后，得到了一个新数，求原来的数是多少的应用问题，它的解法常常是以新数为基础，按运算顺序倒推回去，解出原数，这种方法叫做逆推法或还原法，这种问题就是还原问题．...
《小学英语教学法教程》期末复习知识点Unit1childrenaslanguagelearners1、Howdochildrenacquiretheirfirstlanguageingeneral?（p2）Byimitations、repetitions、listeningtostories......Discussionpoint:languagelearningisasocializingprocess,interactionandexperimentingwiththelanguageincommunicationareimportantwaysforlanguagelearning2、WhatarethedifferencesandsimilaritiesbetweenlearningL1andL2?(p6D:thelength...
习题集一、判断题（40题）1、贝塔值为零的股票的预期收益率为零。F2、CAPM模型表明，如果要投资者持有高风险的证券，相应地也要更高的回报率。T3、通过将0.75的投资预算投入到国库券，其余投向市场资产组合，可以构建贝塔值为0.75的资产组合。F4、CAPM模型认为资产组合收益可以由系统风险得到最好的解释。T5、如果所有的证券都被公平定价，那么所有的股票将提供相等的期望收益率。F6、投资组合中成分证券相关系数越大，投资组合...
BeforeReadingGlobalReadingDetailedReadingAfterReadingSupplementaryReadingAbouttheAuthorEnglishPoem–TheWastedTearsOriginofWorkaholicGapFillingTableCompletionListeningComprehensionBeforeReadingGlobalReadingDetailedReadingAfterReadingSupplementaryReadingEnglishPoem–TheWastedTearsEnjoyaPoemTheWastedTearsQuestionsandAnswersBeforeReadingGlobalReadingDetailedReadingAfterReadingSupplementaryReadingEl...
大学体验英语二（综合教程）Unit7FamilyTiesListenandTalkLeadinAfamilybeginswithtwopeople.Lovedeepensandgrowsbetweenacoupleandsoonawedding1)____,thebeginningsofafamily.Childrenareborn,growingand2)___witheverypassingyear.Whengrownup,they,too,fallinloveandmarry.The3)___ofcreatingafamilybeginsagain,addinggenerationstothefamily.Adayinthelifeofafamilyis4)___workandschool,errandsandchores.Attheendofabus...
Unit7LearningaboutEnglishPartIIReadingTaskComprehensionContentQuestionPairWork1.Ithasborrowedandisstillborrowingmassivelyfromotherlanguages.Todayithasanestimatedvocabularyofoveronemillionwords.2.Theydon’tlikeborrowingforeignwords.TheytrytobanwordsfromEnglish.3.OldEnglishorAnglo-SaxonEnglish.4.TheGermanictribesbroughtittotheBritishIslesinthe5thcentury.5.Theyareusuallyshortanddirect.6.Theyusewor...
WORD格式整理版Unit1WaysofLearningVocabularyI1.1)insert2)onoccasion3)investigate4)Inretrospect5)initial6)phenomena7)attached8)makeupfor9)isawaiting10)not;intheleast11)promote12)emerged2.1)astrikingcontrastbetweenthestandardsoflivinginthenorthofthecountryandthesouth.2)issaidtobesuperiortosyntheticfiber.3)asafinancialcenterhasevolvedslowly.4)isnotrelevanttowhetherheisagoodlawyer.5)byalittle-knowns...
全新版大学英语（第二版）综合教程2课后练习答案KeytoExercisesofCollegeEnglishBook2Unit1★TextAVocabularyI.1.1)insert2)onoccasion3)investigate4)Inretrospect5)initial6)phenomena7)attached8)makeupfor9)isawaiting10)notintheleast11)promote12)emerged2.1)Thereisastrikingcontrastbetweenthestandardsoflivinginthenorthofthecountryandthesouth.2)Naturalfiberissaidtobesuperiortosyntheticfiber.3)Thecity’simpor...
乐理基础知识完全教程杨昕怡中国音乐出版社乐理基础知识完全教程该专题是一套完整的基础乐理教程。全文系统讲解了乐理基础知识，五线谱入门教程。你也可以选择更符合你的章节直接观看，比如“第九讲和弦”。本文亦可作为音乐爱好者的查询手册。23第一讲音的概念第一节音的形成首先让我们来认识一下这看不见又摸不到的“音”倒底是什么呢？“音”是一种物理现象。它是由于物体受到振动，而产生“波”，再由空气传到您的耳朵里，...
SupplementaryReadingAfterReadingDetailedReadingGlobalReadingDetailedReadingBeforeReadingUnit2SmartCarsListeningComprehensionWarm-upQuestionsBackgroundInformationSupplementaryReadingAfterReadingDetailedReadingGlobalReadingDetailedReadingBeforeReadingUnit2SmartCarsListeningComprehensionThinkingBeforeListeningThinkingWhileListeningListeningandSpeakingSupplementaryReadingAfterReadingDetailedReading...
