补充练习1

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语言学补充练习(1

第一章语言学入门知识：I. 名词解释1．cultural transmission (as a defining property of language)Answer: While human capacity for language has a genetic basis, the details of any language system are not genetically transmitted, but instead have to be taught and learned. An English speaker and a Chinese speaker are both able to use a language, but they are not mutually intelligible. This shows that language is culturally transmitted. It is passed on from one generation to the next through teaching and learning, rather than by instinct. In contrast, animal call systems are genetically transmitted. They are born with the capacity to produce the set of calls peculiar to their species.2．descriptive linguistics vs. prescriptive linguisticsAnswer: A linguistic study is descriptive if it describes and analyses facts observed; it is prescriptive if it tries to lay down rules for "correct" behavior. Linguistic studies before the 204 century are largely prescriptive whereas modem linguistic is mostly descriptive.II. 判断正误( T for True and F for False)1. When language is used to get information, it serves an informative function.Answer: F (It serves an interrogative function).精选范本,供参考！2．Most animal communication systems lack the primary level of articulation. Answer: F (The primary units in these systems cannot be further divided into elements. So what they lack is the secondary level of articulation.) 3．Descriptive linguistics are concerned with how languages work, not with how they can be improved.Answer: TIII. 填空题1．By saying that "language is arbitrary", we mean that there is no logical connection between meaning and _______________ .Answer: sounds2．The distinction between langue and parole is made by the Swiss linguist E de Saussure. The distinction between competence and performance is made by the American linguist _______________________________ .Answer: Noam Chomsky3．An approach to linguistic study which attempts to lay down rules of correctness as to how language should be used is _________________ .Answer: prescriptiveIV. 选择题1．Unlike animal communication system, human language is ___ .A. stimulus freeB. stimulus boundC. under immediate stimulus controlD. stimulated by some occurrence of communal interestAnswer： A2. __ has been widely accepted as the forefather of modem linguistics.a. Chomskyb. Saussurec. Bloomfieldd. John Lyon Answer: bV. 问答题l. Is language productive or not? Why?Answer: Firstly, Language is productive or creative. This means that language userscan understand and produce sentencesthey have never heard before. Secondly, Productivity is unique to human language. Most animal communication systems have a limited repertoire, which is rapidly exhausted, making any novelty impossible. Thirdly,The productivity or creativity of human language originates from its duality. Because of duality, the speaker can combine the basic linguistic units to form an infinite set of sentences. The productivity of language also means its potential to create endless sentences.This is made possible by the recursive nature of language.onl 2. Comment on the f ollowing statement: “In linguistics, ‘ language means what a person says or said in a given situation ” .Answer: This statement is incorrect. In linguistics, "language" has several layers ofmeaning: firstly, the whole of a person 'lasnguage, e.g. Shakespeare ' s language; secondly, a particular variety or level of speech or writing, e.g. scientific language, literary language, colloquial language; thirdly, an abstract system underlying the totality of the speech/writing behavior of a community, e.g. the English language, the Chinese language; lastly, there is an even more abstract sense of "language", referring to the common features of all human languages that distinguish them from animal communication systems or any artificial language.3. Point out three ways in which linguistics differs from traditional grammar. Answer: Firstly, most linguistic analyses today focus on speech rather than writing. Secondly, modem linguistics is mostly descriptive while traditional grammar is largely prescriptive. Thirdly, a third difference is the priority of synchronic description over the traditional diachronic studies.4. What is the major difference between Saussure' s distinction between langue and parole and Chomsky's distinction between competence and performance? Answer: Saussure 'lansgue is social product, a set of conventions for a speech community. Chomsky regards competence as a property of the mind of each individual. Saussure studies language more from a sociological point of view while Chomsky studies it more from a psychological point of view.第二章语音学和音位学I. 名词解释1．narrow transcriptionAnswer: There are two ways to transcribe speech sounds. One is the“ broadtranscription - th”e transcription with letter-symbols only, andthe other is “ narrow transcr-i-p-t ihoen transcr”iption with letter-symbols accompanied by the diacritics which can help bring out the finer distinctions than the letters alone may possibly do.2. Illustrate the term “ allophone ” with at least one appropriate example. Answer: Allophones are the different members of a phoneme, sounds which are phonetically different but do not make one word different from another in meaning. For example, in English, the phoneme /l/ is pronounced differently in "let", "play" and "tell". The first /l/ is made by raising the front of the tongue to the hard palate, while the vocal cords are vibrating; the second /l/ is made with the same tongue position as the first, but the vocal cords are not vibrating; and the third /l/ is made by raisingnot only the front by also the back of the tongue while the vocal cords are vibrating.II 判断正误( T for True and F for False)1. /o/ is a mid-high front rounded vowel.Answer: F. (/o/ is a mid-high BACK rounded vowel.)2. A phoneme in one language or one dialect may be an allophone in anotherlanguage or dialect.Answer: T.III. 填空题：1. The three cavities in the articulatory apparatus are _____ ,______ , and ____ .Answer: pharynx, the nasal cavity, the oral cavity2. By the position of the ___ part of the tongue, vowels and classified as front vowels, central vowels and back vowels.Answer: highest.3. _ refers to the change of a sound as a result of the influence of an adjacent sound.Answer: Assimilation.4. You are required to fill in the blanks below abiding by the instance given beforehand.Example: /p/: voiced bilabial stop/s/: _______________/g/: ______________/t?/: ______________/t/: ______________/f /: ______________Answer:/s/: voiceless alveolar fricative/g/: voiced velar stop/t?/: voiceless alveo-palatal/post-alveolar affricate/ t /: voiced dental fricative/f /: voiceless labiodental fricative5. Which of the following words would be treated as minimal pairs and minimal sets? pat, pen more, heat, tape, bun, fat, ban, chain, tale, bell, far, meal, vote, bet, heel, ten, men, pit, main, hit, eat, manAnswer:pat, fat; pat, pit; pit, hit;pen, ten; ten, men;heat, eat; heat, heel;tape, tale;bun, ban;chain, main;bell, bet;meal, heel;man, men, main.IV. 选择题1. All syllables contain a(n) ______ .a. nucleusb. codac. onsetAnswer: a2. ____ is one of the supersegmental features.a. Stopb. Voicingc. Deletiond. ToneAnswer: d3. Which of the following consonants does not exist in English?a. dental stopb. bilabial stopc. alveolar stopd. velar stopAnswer: a4. ___ is not an English consonant.a. Labiodental plosiveb. Alveolar nasalc. Velar stopd. Dental fricativeAnswer: aV. 辨音选择1. What are the distinctive features that group the following sounds in these sets?1) /f, v ,s/2) /p, f, b/3) /g, z, b/4) /k, g, w/5) /m, n, ?/Answer: 1) fricative 2) obstruent 3) voiced 4) velar5) nasal2. There is one segment that does not belong to the natural class in each of the following groups of speechsounds. You are required to identify that segment and label the natural class, using a descriptive term as 精选范本,供参考！specific as possible.a) /m/, /n/, /w/, / ? /b) /v/, /w/, /z/, /t/c) /n/, /f/, /l/, /s/, /t/, /d/, /z/Answer:1) /w/ is a semi-vowel, and the others are all nasals.2) /t/ is voiceless, and the others are voiced.3) /f/ is labiodental, and the rest are alveolarVI. 问答题1．Circle the words that contain a sound as required:1) a low vowel: pipe, gather, article, leave, cook2) a bilabial consonant: cool, lad, leap, bomb, push3) an approximant: luck, boots, word, once, table4) a front vowel: god, neat, pit, lush, cook5) a velar: god, fast, chat, lake, quick2．Exemplify the relationship between phone, phoneme and allophone. Answer: Firstly, a “ phone i”s a phonetic unit or segment. The speech sounds we hear and produce during linguistic communication are all phones. Phones may or may not distinguish meaning. Secondly, a "phoneme" is a phonological unit that is of distinctive value. As an abstract unit, a phoneme is not any particular sound. It is represented orrealized by a certain phone in a certain phonetic context. Thirdly, the phones representing a phoneme are called its "allophones". How a phoneme is represented by a phone, or which allophone is to be used, is determined by the phonetic context in which it occurs. But the choice of an allophone is not random but rule-governed in most cases.3．When we are pronouncing the following phrases, how do we actually articulate the "n" sound in the word "ten"? Do we still pronounce it as /n/?1) ten houses 2) ten teachers 3) ten colleges 4) ten pupils 5) ten buildings6) ten classes Answer: 1) /n/2) /n/3) / ? /4) /m/5) /m/6) / ? /4．How many functions do the vocal cords have in the production of speech sounds? Answer: They have three functions: to make a glottal stop, to produce a voiced sound and to produce a voiceless sound.第三章形态学I. 名词解释1．morphemeAnswer: The morpheme is the smallest unit in terms of relationship betweenexpression and content, a unit which cannot be divided without destroying or drastically altering its meaning, whether it is lexical or grammatical. For instance, the word "barks" in "The dog barks" consists of two morphemes ― "bark" and "-s", neither of which can be further divided into other smaller meaningful units.2．lexemeAnswer: The term "lexeme" is postulated to reduce the ambiguity of the term "word". It is the abstract unit underlying the smallest unit in the lexical system of a language, which appears in different grammatical contexts. For example, "write" is the lexeme of the following set of words: "writes", "wrote", "writing", "written".3．inflectional morphemesAnswer: Inflectional morphemes are also called inflectional affixes. They manifest various grammatical relations or grammatical categories such as number, tense, degree and case. In English, all inflectional morphemes are suffixes, e.g. -(e)s, -ing, -(e)d, -est.II. 判断正误1． A root is not always a free form.Answer: T (There are such bound roots as-ceive ”.) “III. 填空题1．Polymorphemic words other than compounds have two parts: the roots and the . Answer: affixes2．On, before and together are __ words ― they are words which donot take inflectional endings.Answer: grammatical (functional/form)IV ．选择题1．"Radar" is a/an _ .a. acronymb. blendingc. coinaged. clippingAnswer: a2．Compound words consist of ____ mor phemes.a. boundb. freec. both bound and freeAnswer: bV. 匹配题Match each expression under A with the one statement under B that characterizes it.A B1. a noisy crow a. compound noun2. eat crow b. root morpheme plus derivational prefix3. scarecrow c. phrase consisting of an adjective plus noun4. the crow d. root morpheme plus inflection affix5. crowlike e. root morpheme plus derivational suffix6. crows f. grammatical morpheme followed by lexical morphemeg. idiomAnswer: 1. c 2. g 3. a 4. f 5. e 6. dVI. 问答题1. Divide the following words into Roots, IA (inflectional affix) and/orDA (derivational affix).1) transformations 2) looseleaves3) destructive 4) geese 5) misledAnswer:1) trans- (DA) form (Root) -ation (DA) s (IA)2) loose (Root) leave (Root) s (IA)3) de- (DA) struct (Root) -ive (DA)4) geese (IA)5) mis- (DA) led (IA)2. Label the morphological category of the morphemes underlined in each of the English expressions.a) I' ve been here.b) transformc) oxend) recurAnswer: a) bound morpheme b) derivational prefix c) inflectional suffix d) bound root3. Each of the following Persian words is poly-morphemic. You are required to match each of the notions given below with a morpheme in Persian. (Note that xar means "buy" and -id designates the past tense). xaridiYou (singular) bought.naxaridamI did not buy. namixaridandThey were not buying.xaridHe bought. naxaridimWe did not buy. mixaridHe was buying.mixarididYou (plural) were buying. xaridamI bought.Match each of the notions given below with a morpheme in Persian:a) Ib) you (singular)c) notd) was/were V-ing (continuous)Answer: a) amb) ic) nad) miVid4．It is a fact that morphological processes may be sensitive to certain phonological context. The English data given below illustrate this fact. You are required to state the phonological contexts where the addition of -en is possible.a bwhiten *bluenmadden *stupidenredden *greenenFatten *fartheren quicken *slowendeafen *difficultenLiven *abstractenharden *shallowensoften *angryendeepen *vividenAnswer: The suffix -en, which attaches to adjectives to form verbs, can only attach to monosyllabic bases ending in oral stops or fricatives. Verb Adjective-en if Adjective ends in an obstruent (oral stop or fricative).- < ① > if Adjective ends in a sonorant (n asal, approxima nt, vowel)Meaning: to make (more) Adjectives5．The word uneasiness may be analyzed in either of the two ways below. You are required to find an argument to support one of the two analyses.a)NPrefixNoununAdjectiveSuffixeasinessb)NAdjectiveSuffixPrefixAdjectivenessuneasiAnswer: b) is the correct analysis, because un- only attaches to adjectives to form other adjectives. Un- cannot be attached to a noun.【本文档内容可以自由复制内容或自由编辑修改内容期待你的好评和关注，我们将会做得更好】。

补充习题数学一下(1-21)

１１
练习四
１．
正三方角形形有有（（））；；长圆方有（形有（）。）；
２．
（）个
（）个（）个
（）个
３．在每个图形里画一条线，把它们都分成两个三角形。
４．数一数，填一填。
（）个三角形（）个正方形（）个长方形５．找规律，画一画。
３．
原有１１支１２本１４瓶用去２支３本５瓶还剩（）支（）本（）瓶
４．
小军买了多少支铅笔？
＝（支）
８
复习（１）１．４＋８＝９＋８＝９＋５＝
１２－８＝１７－９＝１４－５＝１２－４＝１７－８＝１４－９＝２．１１１５６４－－－６７９＝＝＝１１１２４２－－－５８３＝＝＝１１１５８３－－－９９８＝＝＝３．算一算，把得数相同的算式连起来。１５－９１１－３６＋２１１－８１６－８１２－６９－６１３－５４．看谁先得到小红旗。
３．加数加数和被减数减数差
４７０
７２２
６２０
６５６０
５０６
４５４０
４．在○里填“＞”或“＜”。４５○５５６３○３６１００○９９５０＋９○９５７４－７０○４０９０＋６○６９
５．（（１２））９个３位里上面是有４（、十位）个上十是１和（的数是）（个一。）。
１．（在１）合比适２的０数大前一面些画。“”。１９２２５２
（２）比５５小一些。（３）比３６７０大得多。３０５４
３０４０９７
２．
的小答红案可下能面跳画了“多少”。下？在合适
４０下６５下８５下
３．
小丽可能有多少本书？在合适

(完整版)必修2第二章第一节化学能与热能练习含答案

高一化学《化学能与热能》补充练习1．下列热化学方程式书写正确的是(ΔH 的绝对值均正确)( )A ．C 2H 5OH(l)＋3O 2(g)===2CO 2(g)＋3H 2O(g) ΔH ＝－1 367.0 kJ/mol(燃烧热)B ．NaOH(aq)＋HCl(aq)===NaCl(aq)＋H 2O(l) ΔH ＝＋57.3 kJ/mol(中和热)C ．S(s)＋O 2(g)===SO 2(g)　ΔH ＝－269.8 kJ/mol(反应热)D ．2NO 2===O 2＋2NO ΔH ＝＋116.2 kJ/mol(反应热)2．下列关于热化学反应的描述中正确的是( )A ．HCl 和NaOH 反应的中和热ΔH ＝－57.3 kJ/mol ，则H 2SO 4和Ca(OH)2反应的中和热ΔH ＝2×(－57.3) kJ/molB ．CO(g)的燃烧热是283.0 kJ/mol ，则2CO 2(g)=2CO(g)＋O 2(g)反应的ΔH ＝+2×283.0 kJ/molC ．需要加热才能发生的反应一定是吸热反应D ．1 mol 甲烷燃烧生成气态水和二氧化碳所放出的热量是甲烷的燃烧热3．发射“嫦娥一号”探月卫星用的燃料是H 2，氧化剂是O 2。

已知：1 g 氢气燃烧生成液态水放出142.9 kJ 的热量，表示该反应的热化学方程式正确的是( )A ．2H 2(g)＋O 2(g)===2H 2O(l) ΔH ＝－142.9 kJ·mol －1B ．2H 2(g)＋O 2(g)===2H 2O(l) ΔH ＝－571.6 kJ·mol －1C ．2H 2(g)＋O 2(g)===2H 2O ΔH ＝－571.6 kJ·mol －1D ．2H 2(g)＋O 2(g)===2H 2O(l) ΔH ＝＋571.6 kJ·mol －14．已知：H 2(g)＋F 2(g)===2HF(g)　ΔH ＝－270 kJ·mol －1，下列说法正确的是( )A ．2 L 氟化氢气体分解成1 L 氢气和1 L 氟气吸收270 kJ 热量B ．1 mol 氢气与1 mol 氟气反应生成2 mol 液态氟化氢放出热量小于270 kJC ．在相同条件下，1 mol 氢气与1 mol 氟气的能量总和大于2 mol 氟化氢气体的能量D ．1个氢气分子与1个氟气分子反应生成2个氟化氢气体分子放出270 kJ 的热量5．在25 ℃、101 kPa 下，1 g 甲醇燃烧生成CO 2和液态水时放热22.68 kJ ，下列热化学方程式正确的是( )A ．CH 3OH(l)＋O 2(g)===CO 2(g)＋2H 2O(l) ΔH ＝＋725.8 kJ·mol －132B ．2CH 3OH(l)＋3O 2(g)===2CO 2(g)＋4H 2O(l) ΔH ＝－1452 kJ·mol －1C ．2CH 3OH(l)＋3O 2(g)===2CO 2(g)＋4H 2O(l) ΔH ＝－725.8 kJ·mol －1D ．2CH 3OH(l)＋3O 2(g)===2CO 2(g)＋4H 2O(l) ΔH ＝＋1452 kJ·mol －16．下列图像分别表示有关反应的反应过程与能量变化的关系，则下列说法中正确的是( )A ．石墨转变为金刚石是吸热反应B ．白磷比红磷稳定C ．S(g)＋O 2(g)===SO 2(g)　ΔH 1　S(s)＋O 2(g)===SO 2(g)　ΔH 2　则ΔH 1>ΔH 2D ．CO(g)＋H 2O(g)===CO 2(g)＋H 2(g)　ΔH 1>07．下列各组热化学方程式的ΔH 前者大于后者的是(　)①C(s)＋O 2(g)=CO 2(g) ΔH 1 C(s)＋O 2(g)=CO(g) ΔH 212②S(s)＋O 2(g)=SO 2(g) ΔH 3 S(g)＋O 2(g)=SO 2(g) ΔH 4③H 2(g)＋O 2(g)===H 2O(l)　ΔH 5 2H 2(g)＋O 2(g)===2H 2O(l)　ΔH 612④CaCO 3(s)===CaO(s)＋CO 2(g)　ΔH 7 CaO(s)＋H 2O(l)===Ca(OH)2(s)　ΔH 8A ．① B ．④ C ．②③④ D ．①②③8．已知：2H 2(g)＋O 2(g)===2H 2O(l)　ΔH ＝－571.6 kJ/molCH 4(g)＋2O 2(g)===CO 2(g)＋2H 2O(l)　ΔH ＝－890 kJ/mol现有H 2和CH 4的混合气体112 L(标准状况)，使其完全燃烧生成CO 2和H 2O(l)，若实验测得反应放热3 695 kJ ，则原混合气体中H 2和CH 4的物质的量之比是( )A ．1∶1B ．1∶3C ．1∶4D ．2∶39．甲醇质子交换膜燃料电池中将甲醇蒸气转化为氢气的两种反应原理是①CH 3OH(g)＋H 2O(g)===CO 2(g)＋3H 2(g)ΔH ＝＋ 49.0kJ·mol －1②CH 3OH(g)＋1/2O 2(g)===CO 2(g)＋2H 2(g)ΔH ＝－192.9kJ·mol －1下列说法正确的是( )A ．CH 3OH 的燃烧热为192.9kJ·mol －1B ．反应①中的能量变化如右图所示C ．CH 3OH 转变成H 2的过程一定要吸收能量D ．根据②推知反应：2CH 3OH(l)＋O 2(g)===2CO 2(g)＋4H 2(g)的 ΔH >－385.8kJ·mol －110．根据盖斯定律判断右图物质转变过程中,正确的等式是(　)A ．ΔH 1＝ΔH 2＝ΔH 3＝ΔH 4B ．ΔH 1＋ΔH 2＝ΔH 3＋ΔH 4C ．ΔH 1＋ΔH 2＋ΔH 3＝ΔH 4D ．ΔH 1＝ΔH 2＋ΔH 3＋ΔH 411．一定条件下用甲烷可以消除氮氧化物(NO x )的污染。

苏教版四年级下册语文补充习题答案(全册)(1-23课)新

1、走，我们去植树补充习题答案二、1，小鸟是人类的朋友。

2，风儿快活地唱着歌，唤醒了沉睡中的大地。

三、1，沟渠，山坡，欢声笑语，一棵棵青翠的小树。

2，数木可以利用光合作用释放氧气，森林，少先队员满怀希望栽的小树。

四、树木是人类的朋友，我们以后要多植树造林，保护森林。

四下1、走，我们去植树补充习题答案！二、1、蜜蜂是勤劳的天使2、叫洪水止住脚步让庄家快乐成长。

三、2、树木依靠叶子和阳光进行光合作用，吸收空气中的水分和二氧化碳制成养料，同时释放出氧气。

绿色宝库是森林绿色的希望是少先队员满怀希望植下的小树。

四、读了这些文字，我真的感受到了森林的重要，它可以调节气温，清新空气，制造氧气。

人类一刻也离不开它！四下2、第一朵杏花补充习题答案！二、2、慎重严重郑重三、选3四、1、霎时间转眼间须臾2、兴奋激动3、严谨一丝不苟四下3、燕子补充习题答案！一、聚集俊美偶然分散丑陋时常二、1、分红的桃花散发出迷人的香味2、在暖暖的阳光下，小猫侧身躺在墙角，舌头先舔下自己的爪子，然后在脸上抹了几下。

三、1、（2）、细雨柔柳青草花小燕子（3）、不知细叶谁裁出，二月春风似剪刀2、（1）电线小燕子欢快动听（2）几痕表现朦朦胧胧，像有又像无，很逼真，如果换成几根就太清楚了没有作者写的耐人寻味。

四、剪闹不借你们的盐，不借你们的醋只借你们的屋，给我们来住住。

五、抓住小猫耳朵大，胡子硬眼睛灵活来写的。

四下4一，通过学习，你弄懂古诗中的那些字词的意思？写下来。

啼：啼叫。

船：小河。

余：我二，想一想，写诗句。

1.千里莺啼绿映红，水村山郭酒旗风。

2.时人不识余心乐，将谓偷闲学少年。

3.峨嵋山月歌夜发清溪向三峡，思君不见下渝州体会到诗人对友人的依依不舍。

三。

理解诗意，完成下面的填空。

1，山郭水村佛寺2.宋程颢春天的某日，偶有所感写成的诗歌。

风和日丽，偷闲，全诗表达了理学家追求平淡自然、不急不躁的修身养性的色彩和水到渠成的务实功夫，也表现了一种闲适恬静的意境。

小学数学青岛版六年级上册第三单元分数除法应用题练习补充练习题1.docx

小学数学青岛版六年级上册分数除法应用题二（补充练习题）1、两地相距 13 千米，甲乙二人从两地同时出发相向而行，经过4小时相遇。

甲每小时行35 千米，乙每小时行多少千米？22、甲乙两车同时从相距90 千米的两地相对开出，3小时后两车在途中相遇。

甲车每小时行 60 千米，乙车每小时行多少千米？3、一个水果店运一批水果。

第一次运了50 千克，第二次运了70 千克，两次正好运了这1批水果的4，这批水果有多少千克？34、六年级一班有男生 23 人，女生 22 人，全班学生占六年级学生总数的10。

六年级有学生多少人？15、饲养小组养的白兔和黑兔共有18 只，其中黑兔的只数是白兔的 5 。

白兔和黑兔各有多少只？16、小丽买了一枝圆珠笔和一枝钢笔，共用去 12 元，圆珠笔的单价是钢笔的5。

圆珠笔和钢笔的单价各是多少元？37、一套西装 160 元，其中裤子的价格是上衣的 5 。

上衣和裤子的价钱各是多少元？8、打字员打一部书稿。

第一天打了 12 页，第二天打了 13 页。

这两天打的页数占这部书稿5的12。

这部书稿有多少页？3 9、小华收集的火柴盒上的画比小明收集的多60 枚，小明收集的火柴盒上的画是小华的 5 。

小华和小明收集的火柴盒上的画各是多少枚？810、（1）一个建筑工地九月份上半月用水泥18 吨，下半月用的水泥是上半月的9 。

九月份一共用水泥多少吨？8（ 2）一个建筑工地九月份用水泥 34 吨，下半月用的水泥是上半月的9。

上半月用水泥多少吨？11、一支工程队修一条公路。

第一天修了38 米，第二天修了 42 米。

第二天比第一天多修1的是这条路全长的28。

这条路全长多少米？312、一张课桌比一把椅子贵 10 元，如果椅子的单价是课桌单价的5，课桌和椅子的单价各是多少元？513、小红家买来一袋大米，吃了8 ，还剩15千克。

买来大米多少千克？314、一条水渠修了5，还剩 240 米没有修。

这条水渠全长多少米？115、某工厂十月份用水480 吨，比原计划节约了9。

专转本英语补充练习题1

名词性从句练习1. Energy is _______ makes thing work.A. whatB. somethingC. anythingD. that2. Information had been put forward _________ more middle school graduates will be admitted into universities.A. whileB. thatC. whenD. as3. Is ______ he said really true?A. thatB. whatC. whyD. whether4. _________ he will go to work in a mountain village surprises me all of us.A. WhatB. ThatC. WhoD. How5.______ all the inventions have in common is ______ they have succeeded.A. What；whatB. That; thatC. What; thatD. That; what6. _______ moved us most was _______ he looked after the old man for more than 20 years.A. That; thatB. What; thatC. what; whatD. That; what7. Would the news _______he failed to pass the exam bother you?A. whichB. on whichC. of whichD. that8. Thinking ______ you know _____ in fact you don’t is a terrible mistake.A. that; thatB. what; whatC. that ; whatD. what; what9. Many people thought little of me, but I did what _______.A. I thought I was rightB. I thought it was rightC. I thought was rightD. I was thought rightly10. The manager had decided to put ______ he think is energetic, clever, and has good sense of duty in the position of the leadership of the company.A. those whoB. anyoneC. whomeverD. whoever11. Scientist believe native Americans arrived by crossing the land bridge that connected Siberia and _______ more than 10,000 years ago.A. this is AlaskaB. Alaska is now AlaskaC. is now AlaskaD. what is now Alaska12. Because the drugs has been studied in humans for only a few years, nobody knows ________ its long—term effects might be.A. any of whichB. thatC. about whichD. what13. This book will show you _______ from books is put into practical use.A. how you’ve learnedB. how what you’ve learnedC. how that you’ve learnedD. that you’ve learned14. College students are free to study ________ them.A. whatever that interestsB. whatever interestsC. whatever which interestsD. what interest15._________ the science of medicine is one of the most useful sciences is widely accepted.A. ThatB. WhetherC. WhatD. Which16. A modern city has sprung up in ________ was a wasteland ten years ago.A. whichB. whatC. thatD. where17. _______ I saw was two men crossing the street.A. WhoB. WhomC. WhatD. That18. The king promised to marry his daughter to _______ defeated the enemy.A. whoB. whomC. whomeverD. whoever18. To a highly imaginative writer, ___________ is a piece of paper anda pen.A. all are requiredB. all is requiredC. all what is requiredD. what is required19. The young man turned a deaf ear to _________ Father said, ________ annoyed Mother very much.A. which, thatB. what, whichC. that , whichD. how, what20. Do _________ right and respect the opinions of others.A. what you believe isB. that you believe isC. which you believe isD. which you believe21. Tom wrote the famous poem when he made a tour to _______ was once a battlefield.A. whereB. thatC. whatD. which22. People were perhaps more honest a long time ago when life was very different from_______ it is today.A. thatB. that whatC. whichD. what虚拟语气练习1. He suggested _______ to tomorrow’s exhibition together.A. us to goB. we wentC. we shall goD. we go2. It was essential that the application forms _______ back before the deadline.A. must be sentB. would be sentC. be sentD. were sent3. It is highly desirable that a new president _______ for this college.A. appointedB. be appointedC. is appointedD. has been appointed4. It was essential that all the necessary documents _______ to the president's office being the end of this month.A. be handed inB. must be handed inC. shouldD. had been handed in5. It was suggested at the meeting that effective measures _____ to solve the problem.A. were takenB. be takenC. must be takenD. take6. It was proposed that the matter _______ discussed at the next meeting.A. will beB. hasC. beD. would be7. We desire that the tour leader ______ us immediately of any change in plans.A. informB. informsC. informedD. has informed8. The manager of the hotel requests that their guests _______ after 11:00 pm.A. not to play loud musicB. shouldn’t' t play loud musicC. don't play loud musicD. couldn't play loud music9. It is highly desirable that a new president _______ to this college.A. appointedB. be appointedC. was appointedD. hasbeen appointed10. It is recommended that the project _______ until all the preparations have been made.A. is not startedB. will not be startedC. not be startedD. is not to be started11. It is politely requested by the hotel management that radios _______ after 11 o'clock at night.A. were not playedB. not to playC. not be playedD. did not play12. It's necessary _______ the dictionary immediately.A. that he will returnB. that he returnedC. that he returnD. that he has to return13. We are all for your proposal that the discussion_______.A. be put offB. was put offC. should put offD. is to put off14. The mad man was put in the soft-padded cell lest he _______ himself.A. injureB. had injuredC. injuredD. would injure15. He said that the driver must have had an accident; otherwise he _______ by then.A. would have arrivedB. must have arrivedC. should arriveD.would arrive16. If _______ I harder at school, I would be sitting in a comfortable office now.A. workedB. were to workC. had workedD. were working17. If the earth suddenly _______ spinning, we would all fly off it.A. had stoppedB. stoppedC. has stoppedD. would stop18. I'm sorry Andy didn't want to go to the conference, _______ willing to go we would have paid all his expenses. A. Being B. Was he C. He had been D. Had he been19. That tree looked as if it _______for a long time.A. hasn't wateredB. didn’t' t waterC. hadn't been wateredD. wasn't watered20. Jean doesn't want to work right away because she thinks that if she _______ a job she probably wouldn't be able to see her friends very often.A. has to getB. were to getC. had gotD. could have got21. _______ right now, she would get there on Sunday.A. Would she leaveB. If she leavesC. Were she to leaveD.If she had left22. If the whole operation _______ beforehand, a great deal of time and money would have been lost.A. was not plannedB. has not been plannedC. had not been plannedD. were not planned23. The picture exhibition bored me to death. I wish I _______ to it.A. have not goneB. did not goC. had not goneD. should not have gone24. If only the committee _______ the regulations and put them into effect as soon as possible. A. approve B. will approve C. can approve D. would approve25. You don't have to be in such a hurry, I would rather you _______ on business first.A. would goB. will goC. wentD. have gone37. It’s already 5 o’clock now. Don’t you think it’s about time _______?A. we are going homeB. we go homeC. we went homeD. we can go home定语从句练习1. As ________ announced in today’s papers, the Shanghai Export Commodities Fair is also open on Sundays.A. beingB. isC. to beD. been2. Living in the central Australian desert has its problems, _________ obtaining water is not the least.A. of whichB. for whatC. asD. whose3. They lost their way, _______ delayed them considerably.A. asB. whichC. forD. that4. Give me one good reason _______ I should help you.A. for thatB. for whatC. whyD. how5. This is the hour ________ the place is always full of women and children.A. thatB. whenC. whereD. how6. I have never taken anything _______ didn’t belong to me.A. whatB. whoC. thatD. which7. The man once had a large sum of money; now all ______ is left to him is loneliness.A. whatB. whichC. the thingD. that8. His speech attracts a large audience every time, _______ up to half will be from high schools.A. in whichB. for whomC. with witchD. of which9. I have never been to Rome, but that’s one of the most beautiful cities ______.A. where I’d like to visitB. I’d like to visitC. I’d like to visit itD. which I’d like to visit10. There was a teapot fashioned like a duck out of ________ open mouth the tea was supposed to come.A. itsB. whichC. thatD. whose11. Research reveals that all _______make people feel the happiest cannot be bought, such as a good family, friendship and good work.A. canB. whichC. whoD. that12. We need a chairman __________.A. for whom everyone has confidenceB. in whom everyone has confidenceC. who everyone has confidence ofD. whom everyone has confidence on13. The residents, ________ had been damaged by the fire, were given help by the Red Cross.A. All of their homesB. all their homesC. whose all homesD. all of whose homes14. Government reports, examination compositions, legal documents and most business letters are the main situations ________ formal language is used.A. in whichB. at whatC. on whichD. in that15. The hours _______ the children spend in their one-way relationship with television people undoubtedly affect their relationships with real life people.A. in whichB. on whichC. whenD. that16. Agriculture was a step in human progress ________ which subsequently there was not anything comparable until our own machine age.A. inB. forC. toD. from17. Beer is the most popular drink among male drinkers, ______ overallconsumption is significantly higher than that of women.A. whoseB. whichC. thatD. what18. He’s the man __________I supposed was capable of doing such a thing.A. of whomB. whomC. to whomD. who19. ________ might be expected, the response to the question was very mixed.A. AsB. ThatC. ItD. What20. He came back late, _______ all the guests had already left.A. after which timeB. by which timeC. at whenD. during that time21. A survey was carried out on the death rate of new born babies in that region, _________ were surprising.A. as resultsB. which resultsC. the result of itD. the results of which22. Schools, libraries and community centers are the only places ________ people have access to all kinds of information.A. thatB. whereC. whichD. what23. The Social Security Retirement Program is made up of two trust funds, _____ could go penniless by next year.A. the larger oneB. the larger of whichC. the largest oneD. the largest of which24. This new dictionary contains 16,ooo new words and expressions, ______ reflect recent research in science and technology.A. many of themB. many of whichC. many of themD. many of those25. Indeed, he was one _______ self—confidence more appeared than in any other student in his class.A. havingB. in whichC. in whomD. with26. After three years of regular training, Dick would never be the same person _______ he was before.A. whoB. whatC. thatD. as27. It wasn’t such a good dinner _________ she had promised us.A. thatB. asC. whichD. what28. This test is for students _______ native language is not English.A. whoseB. of whomC. with thatD. that their29. That is the driver _______ the traffic police believe has caused the car accident.A. whichB. whomC. whoD. what30. When doing fast reading, we needn’t always focus on the words _______.A. the meaning of which we do not knowB. whose meanings we are not familiarC. with meaning we do not knowD. whose meanings we do not know31. This is the same story _________ I heard ten years ago.A. thatB. about thatC. whichD. of which32. All of the plants now raised on farms have been developed from plants _________ wild.A. once they grewB. they grew onceC. that once grewD. grew once33. Author Edith Wharton thoroughly understood the society _______.A. she had grown upB. she had grown up in itC. that had she grown inD. in which she had grown up34. A solar day is the length of time __________ the earth to revolve around the sun.A. takesB. takes itC. it takesD. he takes35. We saw a film at the Jilin Cinema last night,_________ we had supper at a nearby restaurant.A. whenB. whichC. after whichD. and that after36. The scholar has made another break-through in this field, __________ of great importance to the progress of science and technology.A. I think which isB. which I think it isC. which I think isD. about which I think it is37. There is no rule ______ has exceptions.A. thatB. butC. whatD. which38. With the introduction of the electronic of computer, there is no complicated problem ________ can be solved in a few hours.A. thatB. whichC. butD. that39. ______ is often the case with a new idea, much preliminary activity and optimistic discussion produce no concrete proposals.A. ThatB. ItC. WhatD. As40. The reason ________ he rejected our plan is that he had no faith in us.A. thatB. whyC. becauseD. which41. Do you think the reason _________ he gave is believable?A. for whichB. whichC. whatD. to which42. He studied hard and later became a well—known writer, _________ his father had expected.A. that was whatB. what was thatC. which was whatD. and which was43. The manager is satisfied with ________ you’ve done.A. thatB. all whatC. whichD. all that44. This is the girl __________ has been highly praised.A. of which the paintingB. the painting of whoseC. who paintingD. whose painting。

第二章补充练习题(1)

第二章补充练习题(1)第二章补充练习题一、单项选择题1. 对会计对象的具体内容所作的最基本的分类是（）。

A 会计科目B 会计要素C 会计账户D 会计恒等式 2. 财务会计核算经济活动，提供会计信息主要采用( )。

A 货币量度B 实物量度C 劳动量度D 时间量度 3. 下列会计要素，属于静态要素的有（）。

A 负债B 收入C 费用D 利润 4. 货币计量实际上包含了另外一个重要的前提( )。

A 会计主体B 清算原则C 历史成本D 币值稳定 5. 下列业务不可以进行会计确认的是（）。

A 用银行存款购买材料 B 生产产品领用材料 C 企业销售一批产品 D 与供应单位签订购料合同 6. 会计信息的外部使用者不包括（）A 股东B 债权人C 政府部门D 公司管理层 7. 会计主体假设对会计工作范围从( )上进行了限定。

A 内容 B 人员 C 时间 D 空间 8. 会计分期是从( )中引申出来的。

A 权责发生制B 会计目标C 持续经营D 会计主体 9. 在会计计量属性中，最具有可验证性因而具有可靠性优势的是（） A 历史成本 B 公允价值 C 重置成本 D 可变现净值 10. 在我国会计准则体系中，发挥统驭作用的是（）A 基本准则B 具体准则C 应用指南D 准则讲解 11. 下列资产，属于企业长期资产的有（）A 应收票据B 原材料C 预收账款D 无形资产 12．（）是一种资本储备形式，是可以转化为资本金的资本准备。

A 实收资本 B 资本公积 C 盈余公积 D 未分配利润 13. 将企业资产和负债区分为流动和长期的前提是（）A 会计主体B 持续经营C 会计分期D 货币计量 14. 下列说法正确的是（）A 只有企业拥有所有权的资源才称得上资产B 待处理财产损失也是企业的资产之一C 甲公司和原材料供应商签订了一份购买A材料的合同，A材料也是甲公司的资产之一 D 融资租赁设备是企业的资产15. 关于收入，下列说法错误的是（）A 收入是指企业日常活动中形成的，会导致所有者权益增加的，与所有者投入资本无关的经济利益的总流入B 收入只有在经济利益很可能流入从而导致企业资产增加或者负债减少，且经济利益的流入额能够可靠计量时才能予以确认C 符合收入定义和收入确认条件的项目，应该列入利润表D 收入是指企业日常活动中形成的，会导致所有者权益增加的，与所有者投入资本无关的经济利益的总流出二、多项选择题1. 资金运动的动态要素包括（）A 资产B 所有者权益C 收入D 费用E 利润 2. 会计核算的基本假设应包括( )。

六年级语文上册补充习题练习册习题含答案(1-3课)

三、根据课文内容填空。 1、我们爱你——战国编钟奏出的古曲，改革开放谱写的新歌。 2、我们爱你——奋斗书写的史册，汗水浇灌的硕果。松树的伟岸、梅花的高洁，拨打的胸怀、恢弘的气魄。 3、全诗可以分为三部分。第一节写出了祖国幅员辽阔；第二至六节从不同的角度歌颂祖国的壮丽山河、丰富物产、民俗风情、光辉历史、民族精神；第七节表达了建设祖国的决心。
三、读一读。 1、张海迪是一个怎样的人：张海迪是个高位截瘫的女子，在上个世纪的八十年代，是全国青年学习的楷模。她身残志坚，用难以想象的顽强毅力，与疾病作斗争，并自学外语、著书。 2、你还了解中国历史上哪些著名人物？仿照文章中的句式说一说：当孔子带领弟子周游列国，徜徉在知识的海洋，当秦始皇尽情展示合纵连横的权谋，一举击败六国成为我国第一位统一天下的皇帝，他们让我们记住的是中华民族的智慧、责任和担当。
三、在空白处填上合适的成语。
郑成功慷慨激昂地说：“台湾自古以来就是中国的领土，决不允许侵略者横行霸道。我们一定要收复祖国的宝岛台湾！” 郑军舰队渡海东征，奋勇杀敌，让企图负隅顽抗的荷兰侵略者举手投降。台湾同胞听说郑成功的军队到了，个个喜出望外。街头巷尾，鞭炮声不绝于耳，人民载歌载舞，欢庆胜利。
四、以“我们爱你——”为起句，仿照课文第二至六节写一到两节句子。我们爱你—— 万里长城的雄伟壮观，北京故宫的金碧辉煌，秦兵马俑的惟妙惟肖，中山陵的庄严肃穆。我们爱你—— 贵州黄果树的气势宏大，四川九寨沟的风景如画，黄海、东海的宽广无垠，泰山、华山的巍峨宽大。
五、诵读与欣赏《爱我中华》 1、诗歌讲究押韵，《爱我中华》的韵脚有：花、家、话、华、伐、家、发、话、华。 2、这首诗真切地表达了全国各族人民热爱祖国的思想感情。

苏教版《小学三年级语文下册补充习题》参考答案

苏教版《三年级语文下册补充习题》参考答案第1课、《长城和运河》补充习题答案一、选字填空。

1，偏旁诗篇遍地2，驾驶书架责骂3，蜻蜓蜿蜒拖延二、根据课文内容填空。

1，西海关，巨龙穿行，连绵起伏2，首都北京，天堂杭州，绸带飘落，银光闪闪。

3，巨龙，雄伟，绸带，美丽，是谁创造了这人间奇迹？是我们中华民族的祖先。

我们中华民族的祖先。

三、照样子，把句子补充完整。

中秋节到了，天上的月亮像银盘一样。

万里长城像一条腾飞的巨龙,蜿蜒于崇山峻岭之间四、观察课本上的长城图，写一段话，尽量用到下面的词语。

万里长城像一条巨龙曲折蜿蜒于连绵起伏的群山之中。

五、阅读片段，完成练习。

1，美不胜收古老博大雄伟绿意盎然2，紧紧围着看不清楚3，八达岭长城的四季美不胜收。

春，夏，秋，冬。

喜爱。

4，那时看长城，活像一条出水的蛟龙。

六，连一连。

北京故宫拉萨布达拉宫西安秦始皇兵马俑四川乐山大佛第2课、《美丽的南沙群岛》补充习题答案一、给下列带点字选择正确读音。

难以计数选第2个，其余选第一个。

二、找错别字。

1，座布2，仅计三、选词填空。

1辽阔广阔宽阔2蕴藏蕴含3胜地圣地四、根据课文内容填空。

1，航行捕鱼，开垦种植，搏击风浪的汗水；生息繁衍的烟灰。

2，难以计数珍贵，极为丰富矿产资源，用之不竭。

第二波斯湾。

祖国巨大的蓝色宝库。

海洋生物矿产资源海洋动力。

五、阅读课文片段，完成练习。

1，画第一句。

2，标点有逗号2个顿号逗号句号3.好像未来舞动4，蓝玉，翡翠，水天相连，五彩缤纷。

南沙群岛是一个充满魅力的旅游胜地。

第3课、《庐山的云雾》补充习题答案一、先组词，再填空。

反向写字暴风返回一泻千里瀑布方访火伙包泡二、填上合适的词。

神秘顶茫茫座舒服座秀丽条三、写成语。

１，一泻千里２，腾云驾雾３，千姿百态四、填空。

１，雄伟２，美丽的南沙群岛真令人流连往返。

五、根据课文内容填空。

１，千姿百态瞬息万变。

变幻无常一泻千里。

２，千姿百态。

随风飘荡，一泻千里；四蹄生风，漂浮在北冰洋上的一座冰山。

静力学高中物理补充试题1答案

静力学补充练习1一、单选题(共0分)1．关于静摩擦力的说法，下列正确的是（）A．静摩擦的方向总是与物体的相对运动的趋势方向相同B．静摩擦的方向总是与物体的相对运动的趋势方向相反C．两个相对静止的物体之间一定有静摩擦力的作用D．受静摩擦力作用的物体一定是静止的【答案】B【详解】AB．静摩擦力的方向总是与物体的相对运动的趋势方向相反，故A错误，B正确；C．两个相对静止的物体之间不一定有静摩擦力的作用，要满足静摩擦力产生的条件才会有静摩擦力，故C错误；D．运动的物体也可能受静摩擦力，比如在水平路面上，汽车启动时，车厢地板上的物体会受到静摩擦力的作用，故D错误。

故选B。

2．轮椅分为电动和手动轮椅，是用于伤员、病员、残疾人居家康复、周转运输、就诊、外出活动的重要移动工具。

如图是一款手动轮椅，该轮椅共有4个轮子，人用双手推动手轮圈，轮椅向前运动。

关于地面对4个轮子的摩擦力，下列说法正确的是（）A．前轮、后轮受到的摩擦力都向前B．前轮、后轮受到的摩擦力都向后C．前轮受到的摩擦力向前，后轮受到的摩擦力向后D．前轮受到的摩擦力向后，后轮受到的摩擦力向前【答案】D【详解】因人在后轮用力，则后轮相对地面有向后滑动的趋势，可知后轮受到的摩擦力向前；前轮相对地面有向前运动的趋势，则前轮受到的摩擦力向后。

故选D。

3．如图所示，只有B物体左面是光滑的，其余各接触面都是粗糙的。

如果用水平力F将物体A和B压紧在竖直墙上不动，则物体A受到的摩擦力的情况是（）A ．左、右都受向上的摩擦力B ．左侧受向上的摩擦力，右侧受向下的摩擦力C ．左、右都受向下的摩擦力D ．左侧受向下的摩擦力，右侧受向上的摩擦力【答案】D【详解】B 物体左面是光滑的，说明B 左侧只受水平力F 的作用，B 右侧受到向上的摩擦力，与其重力平衡，A 物体左侧受B 右侧施加的向下的摩擦力，A 还受到向下的重力，则A 物体右侧一定受向上的摩擦力，ABC 错误，D 正确。

（完整word）苏教版五年级下册数学补充习题答案

（完整word）苏教版五年级下册数学补充习题答案苏教版五年级下册数学补充习题答案第1页⼀简易⽅程等式和⽅程的含义1．等式：90-x=30，80÷4=20，7y=6320+30=50，y+17=38，54÷x=9；⽅程：90-x=30，7y=63，y+17=38，54÷x=9。

2．30+ x=80； 4 x=80；x+10=50, 3 x=20+503．52+ x=110；第2页1．-20；+54，+54。

2．解：x=70+35x=105解：x=84-48x=36解：x=50+50x=100解：x=100-27 x=73解：x=70+20 x=90解：x=9－3.6x=5.43：⑴x+16.5=25 x=25－16.5x=8.5 ⑵x+15=60x=60－15x=45第3页⽤等式性质解⽅程(2)1：⑴÷0.3 ⑵×5×52：１４ｘ＝７０ｘ＝７０÷１４ｘ＝５ｘ÷６０＝１２ｘ＝１２×６０ｘ＝７２０ｘ÷４．５＝９ｘ＝４．５×９ｘ＝４０．５５ｘ＝１．５ｘ＝１．５÷５ｘ＝０．３０．２ｘ＝６ｘ＝６÷０．２ｘ＝３０ｘ÷１．１＝３ｘ＝３×１．１ｘ＝３．３３：⑴１２ｘ＝１８x=18÷12x=1.5⑵５ｘ＝６５x=65÷5 x=13第4页⽤等式性质解⽅程练习1. (1)x＝32 (2)x＝20 (3)x＝3 (4)x＝7(5)x＝1002：－3628＋0.8 2.7 ÷315x 1.6 3.23. x+3.8=6.3x=6.3-3.8x=2.50.4+x=2x=2.3-0.4x=1.9x-1.8=4x=4+1.8x=5.81.6x=6.4x=6.4÷1.6x=4x÷7=0.3x=7×0.3x=2.1x÷3=2x=2.1×3 x=6.3第5页4.（1）5.5+x=10x=10-5.5x=4.5（⽶）（2）5x=60x=60÷5x=125.（1）x-98=2x=98+2x=100（元）（2）x-45=128x=128+45x=173（元）（3）7x=2.8x=2.8÷7x=0.4（⽶）（4）4x=36x=36÷4x=9（元）第6页列⽅程解决实际问题(1)1.x+4.8=7.2x=7.2-4.8x=2.4 x-7.9=2x=2.3+7.9x=10.5 3x=132x=132÷3x=442.设昨天卖出x套x+15=82x=82-15x=673.设客车每⼩时⾏驶x千⽶x-30=80x=80+30x=1104.（1）设王⽼师买了x个⾜球x+6=18x=18-6x=12（2）每个篮球y元1.2y=60y=60÷1.2y=50第7页列⽅程解决实际问题(2)1.2x+17=352x=18x=912+8x=528x=40x=53x-64=113x=75x=252.（1）柏树的棵数×3-15=松树的棵数解：设校园⾥⾯有x棵柏树3x-15=753x=90x=30（2）科技书的本数×4+40=⽂艺书本数设科技书有x本4×+40=3204x=280x=703.解：设养公鸡x只4x-20=7804x=800x=200养了公鸡200只200+780=980（只）⼀共980只第8页1.+26106-1591×2920÷23402.77＋3x=1223x=45x=155x－1.6=0.95x=2.5x=0.56x-13.6=206x=33.6x=5.6x-7.9+5.4=12x-7.9=6.6x=14.54x÷2=1.84x=3.6x=0.90.8x÷4=12.80.8x=51.2x=643.解:设解它的⾼是x⽶5.6x=11.2x=2（⽶）第9页４：解：设底边上的⾼是x厘⽶。

热力学第一定律补充练习题

第1章热力学第一定律(一) 填空题1. 在一绝热容器中盛有水，将一电阻丝浸入其中，接上电源一段时间（见下左图）当选择不同系统时,讨论Q 和W 的值大于零、小于零还是等于零。

参考答案2. 298K 时，反应CH 3CHO(g) = CH 4(g) + CO(g)的反应热 ∆r H m 0 = -16.74kJ ⋅mol -1，若反应恒压的热容∆r C p,m = 16.74 J ⋅mol -1⋅K -1，则在温度为时，反应热将为零。

（设：∆r C p,m 与温度无关）。

3. 对理想气体的纯PVT 变化，公式dU=nC V ,m dT 适用于过程；而真实气体的纯PVT 变化，公式dU=nC V ,m dT 适用于过程。

4.物理量Q 、W 、U 、H 、V 、T 、p 属于状态函数的有；属于途径函数的有。

状态函数中属于强度性质的；属于容量性质的有。

5. 已知反应 C(S)+O 2→CO 2 ∆r H m 0＜0 若该反应在恒容、绝热条件下进行，则ΔU 于零、ΔT 于零、ΔH 于零；若该反应在恒容、恒温条件下进行,则ΔU 于零、ΔT 于零、ΔH 于零。

（O 2、CO 2可按理想气体处理）等，大，大，小，等，小6.7. 理想气体绝热向真空膨胀过程，下列变量ΔT 、ΔV 、ΔP 、W 、Q 、ΔU 、ΔH 中等于零的有：。

8. 1mol 理想气体从相同的始态(p 1、T 1、V 1)，分别经过绝热可逆膨胀至终态(p 2、T 2、V 2)和经绝热不可逆膨胀至终态('2'22V T p 、、)则’‘，2222V V T T (填大于、小于或等于)。

9. 某化学在恒压、绝热只做膨胀功的条件下进行，系统温度由T 1升高至T 2，则此过程ΔH零，如果这一反应在恒温（T 1）恒压和只做膨胀功的条件下进行，则其ΔH < 于零。

10．范德华气体在压力不太大时，有b RTaV T V T m p m -=-∂∂2)(且定压摩尔热容为C P ,m 、则此气体的焦——汤系数μJ-T = ，此气体节流膨胀后ΔH 0。

Chapter 2 Incoterms 2000 & 2010(补充练习)(1)

Chapter 2 Incoterms 2000I. Term TranslationActual delivery 象征性交货Customs formalities 清关Delivery 风险转移Unloading 船舷Loading 卸货费Physical delivery 习惯做法II. Multiple choice1. There are mainly _____ sets of international rules related o interpretation of trade terms.A. twoB. threeC. fourD. five2. There are altogether ______ terms defined respectively by the Incoterms 2000 & 2010.A. 11, 13B. 9, 11C. 12, 13D. 13, 113. Among all the Incoterms ______ imposes the minimum obligation and cost to the seller.A. EXWB. CIFC. DESD. DDP4. Among all the Incoterms _____ imposes the minimum obligation and cost to the buyer.A. CIFB. FOBC. DDPD. EXW5. According to the Incoterms 2000 under FCA the risk of goods will be transferred from theseller to the buyer________.A. when the goods are placed at the disposal of the buyer.B. when the goods are delivered to the named place in the exporting country.C. when the goods are given to the nominated carrier.D. when the goods are loaded on the vehicle of the carrier.6. FOB and CFR share one thing that ___________.A. risk is transferred when the goods pass the ship’s railB. they can be used in any mode of transport.C. the seller will be responsible for the unloading at the port of destination.D. none of the above7. According to the Incoterms 2000 under CIF if the goods get loose from the hook and fallinto the sea during loading stage, ______ should hold liable for the loss.A. the buyerB. the sellerC. the carrierD. both the seller and buyer.8. The Incoterms 2000 requires the buyer to handle the import customs clearance exceptunder ________.A. EXWB. FCAC. DDPD. DDU9. Under __________ term it is especially important for the seller to provide shipment noticeto the buyer.A. FOBB. CIFC. FASD. CFR10. The FAS term requires ______ to clear the goods for export.A. the buyerB. the sellerC. the insurerD. either the buyer or the seller11. Under CIP, ____ has to procure insurance against the buyer’s risk of loss of or damageto the goods during the carriage.A. the carrierB. the buyerC. the sellerD. none of the aboveIII. True or false statements1._______The EXW term indicates an actual delivery.2._______ If the sales contract contains provisions contrasting to the definition of theIncoterm used, as far as the provisions are legally recognized by relevant lawsand regulations, they will be valid.3.________FOB, interpreted in any sense, always requires the seller to handle the exportcustoms formalities.4.________FCA and CPT have one thing in common that the seller delivers when thegoods are handed over to the first carrier nominated by the buyer.5.________Both CIP and CPT should be followed by named port of destination.6.________Since under CFR the risk will be transferred when the goods are delivered,the seller will not hold any responsibility if the buyer finds the goodsnot in conformity with the contracted specifications.7.________According to the Incoterms 2010 under DAT the buyer is not responsible forunloading the goods the vessel.8.________All the C group terms require the seller to bear the main costs of carriage andrisk during the transport.9._______ Under CIF the seller has to purchase insurance, therefore he has to bear therisk during the ocean transport.10._______ All the D group terms are arrival contract terms and they all indicate actualdelivery.11.________ DAP requires the seller to clear the goods for export and import.12. ________DAP requires the seller to unload the goods at the named place of destination.13. ________Incoterms CIF, CPT, DAT and DAP require the Seller to carry out insurance.14.________The Incoterms® rules describe mainly the tasks, costs and risks involved in thedelivery of goods from sellers to buyers.15. _______Under the Incoterms rule EXW, FCA, DAT, DAP, DDP, FAS and FOB, thenamed place is the place where delivery takes place and where risk passes fromthe seller to the buyer.16. _______Under the Incoterms rule CPT, CIP, CFR, CIF, the named place is the place ofdelivery.17._______ When applying Incoterms, it’s better to specify the place or port as precisely aspossible so as to make the rule work best.18._______ Under DAT, the Seller accomplishes its obligation of delivery when the goodsare placed under the buyer’s disposal unloaded from the arriving vehicle19. _______Incoterms do not determine the transfer of title to the goods, nor the remedies forbreach of contract.20._______Incoterms apply to service contracts and define contractual rights or obligations.IV. Judge wheter the following price terms are correct or not. If not, make corrections.1.U.S. $55 per ton CIFC5 Shanghai2.Pound 200 per carton CFR New Zealand3.U.S.$150 per ton FOB New York4.FF580 per dozen less than 1% commission5.EUR2,700 per case CIFC2 DubaiV. Sentence Translation1. The price quoted includes 5% commission on FOB basis.2. Under CPT, CIP, “carrier” means any person who, in a contract of carriage, undertakes toperform or to procure the performance of transport, by rail, road, air, sea, inland wateway or by a combination of such modes.3. Under FCA, the chosen place of delivery has an impact on the obligations of loading and unloading the goods at that place. If delivery occurs at the seller’s premises, the seller is responsible for loading. If delivery occurs at any other place, the seller is not responsible for unloading.4. Under FOB, the seller must deliver the goods on the date or within the agreed period at the named port of shipment and in the manner customary at the port on board the vessel nominated by the buyer. And the buyer must bear all risks of loss of or damage to the goods from the time they have passed the ship’s rail at the named port of sh ipment.。

苏教版小学数学六年级上学期补充习题1-2

六年级数学补充习题练习1班级姓名1、在一个长方体中，相交于一个顶点的三条棱的长度分别是a厘来，b厘米和h 厘米。

它的表面积是( )平方厘米，它的体积是( )立方厘米2、一个正方体的棱长是a厘来，它的表面积是( )平方厘米，体积是( )立方厘米。

3、一根长0.5米的长方体木料的横截面是正方形，把它平均锯成两段，表面积比原来增加32平方厘米，原来这根木料的体积是（）立方厘米。

4、把64升水倒入一个长8分米，宽2.5分米，高4分米的长方体水箱内，这时水面距箱口（）分米。

5、两个完全相同的长方体，长5厘米，宽4厘米，高3厘米。

拼成一个表面积最大的长方体后，表面积比原来减少了( )平方厘米，现在表面积是( )平方厘米。

6、建筑工人为星海小学修建一座游泳池，游泳池长50米，宽15米，深1.4米。

（1）这个游泳池占地多少平方米?（2）如果在游泳池的底面和四周贴瓷砖，贴瓷砖的面积是多少平方米?（3）如果在游泳池放水到离池口0.2米处,需要多少立方米水?7、有两根同样长的铁丝，一根可以围成棱长1.2分米的正方体，另外一根围成底面长1.7分米，宽0.8分米的长方体，求这个长方体的高是多少？8、一个长方体，如果长减少2厘米，宽增加2厘米，就成为一个正方体，这时，正方体的表面积是96平方厘米，原来长方体的体积是多少？9、大厅里有四根长方体柱子，高8米，底面是周长2米的正方形，如果给这些柱子的四周涂油漆，按每千克油漆涂5平方米计算，需油漆多少千克？六年级数学补充习题练习21、35 千克的12 是（）千克； 20米的（）（）是12米。

2325 千米 = ( )米 335 时 = ( )时( )分2、把3米长的木料等长的截4次，每段长度是这根木料的（）（），3段长（）（）米。

3、仓库有12吨粮食，运走了34 ，运走了（）吨粮食，还剩下（）（）。

4、军军看一本48页的故事书，已看了全书的56 ，还剩这本书的( )( ) 。

unit1-3补充练习

Unit 1 补充练习There are 10 incomplete sentences in this part. For each sentence there are four alternative choices marked A), B), C) and D). Choose the one that best completes the sentence.1.My journey back to my hometown seemed slow because the train stopped ______ at different villages.A) gradually B) continually C) continuously D) unceasingly2.These two cities are similar ______ they both have a high rainfall in June.A) to that B) except that C) besides that D) in that3.______ her sister, Jane is quiet and does not easily make friends with others in the school.A) Unlike B) Dislike C) Liking D) Alike4.Physics is ______ to the science which was called natural philosophy in history.A) uniform B) alike C) equivalent D) likely5.Race and sex are not relevant ______ whether a person is qualified for the job.A) to B) for C) on D) with6.The scientist could hardly find sufficient grounds ______ his arguments in favor of the new theory.A) which to base on B) to base onC) to be based on D) on which to base7.This is not an economical way to get more water; ______, it is very expensive.A) or else B) in short C) on the contrary D) on the other hand8.First published in 1927, the chart remains an ______ source for researchers.A) identical B) inevitable C) intelligent D) indispensable9.What a fantastic journey! It's worth ______ all my life.A) remembering B) being remembered C) to remember D) to be remembered10.I went along thinking of nothing ______, only looking at things around me.A) in brief B) in doubt C) in harmony D) in particularText SummaryThe following passage is a summary of Text A. Fill in each blank, using the words in Text A.Advertisements in newspapers and on buses often (1) ____________ that learning English is easy and does not need much effort. However, there is no such a thing as a (2) ____________ method that suits all students in every situation. Some experts even (3) ____________ that there are as many good methods of teaching a language as there are good teachers, because every teacher is an individual with his own (4) ____________.People used to believe the only way to learn a language was to spend a lot of time in a country where it was spoken. Some students go to the opposite (5) ____________ and think they can teach themselves at home with (6) ____________. A great deal of current teaching based on behaviorist (7) ____________ may not be (8) ____________, either.One can learn to speak English or any other language if he is (9)____________ in it. To learn a language well, we also need other people to talk to and listen to when we (10) ____________.Translate the following sentences into English, using the words and phrases given in brackets.1.他们说我长大以后会是个可敬又勤劳的年轻人，会像我父亲一样诚实地生活。

有机补充练习(1)

绪论1、请写出下列化合物分子结构式的简写式：答案：2、请将下列简写式转化为键线式：答案：3、判断下列化合物有无偶极矩? 画出其方向：答案<请点击>答案：4、排列出乙烷、乙烯、乙炔分子中C－H键极性大小顺序：答案<请点击>答案：乙烷< 乙烯< 乙炔答案<请点击> 答案：醋酸可溶于水。

醋酸分子中的羧基可与水分子形成氢键缔合，使醋酸溶于水中。

烷烃1、命名或写出下列化合物的结构式：答案：2、回答下列问题：（1）2,2－二甲基丁烷的一氯代主要产物是（2）．一分子量为72的烷烃进行氯代时，只得一种氯代产物，其结构为（3）．写出1,2－二溴乙烷Newman投影式的优势构象。

（4）．将下面化合物按其沸点由高到低的顺序排列A、辛烷B、3－甲基庚烷C、2,3－二甲基戊烷D、2－甲基己烷（5）. 下列自由基中最稳定的是A、B、C、D、答案<请点击>答案：3、用不同符号表示下列化合物中伯、仲、叔、季碳原子答案<请点击> 答案：4、某烷烃相对分子质量为72，氯化时（1）只得一种一氯化产物，（2）得三种一氯化产物，（3）得四种一氯化产物，分别写出这些烷烃的构造式。

答案<请点击> 答案：烯烃、炔烃及共轭二烯烃1、命名或写出下列化合物的结构式：答案：(1) 4－甲基－２－己炔(2) 4－异丙基环己烯(3) 1－丁烯－3－炔(4) 反－3,4－二甲基环丁烯2、选择题：（1）下列化合物中碳氢键解离能最小的是:（2）下列碳正离子中最稳定的是:（3）下列烯烃在和溴水发生加成反应时，反应速度最快的是:（4）下列烯烃最稳定的是（），最不稳定的是（）A、2,3－二甲基－2－丁烯B、3－甲基－2－戊烯C、反－3－己烯D、顺－3－己烯（5）下列烯烃不具有顺、反异构体的是：（6）下列烯烃氢化热（KJ/mol）最低的是：答案：3、完成下列反应式：答案：4、用简单并有明显现象的化学方法鉴别下列各组化合物：正庚烷1,4－庚二烯1－庚炔答案<请点击> 答案：5、合成题：（1）以环己醇为原料合成：1,2,3－三溴环己烷（2）从异丙醇为原料合成：溴丙烷（3）由1－氯环戊烷为原料合成：顺－1,2－环戊二醇。

【期中前】《物质的量》补充1

《物质的量》补充练习1一、判断下列说法是否正确，错误的请改正；1．6.02×1023个电子就是1摩尔电子。

2．阿伏伽德罗常数是为了纪念意大利化学家阿伏伽德罗的杰出贡献而以他的名字命名的。

3．N A 是一个常数，它的单位是“个/摩尔”或“mol －1”，它是一个精确的数值，只是我们测量手段有效，一般用6.02×1023来代替。

二、式量的计算4．一个A 原子的质量是a 克，一个126C 的质量是b 克，那么A 的原子量是多少？三、阿伏伽德罗定律5．同温同压下，相同体积的任何气体均具有相同的原子数目。

（）6．在0℃和1.01×105Pa 条件下，将0.1g 氢气、3.2g 二氧化硫、2.2g 二氧化碳混合，该混合气的体积是A ．2.24LB ．3.36LC ．4.48LD ．6.72L 四、阿伏伽德罗定律的推论：7．下列有关气体体积的叙述中，正确的是( )A ．一定温度、压强下，气态物质体积的大小由构成气体的分子大小决定B ．一定温度、压强下，气态物质体积的大小由构成气体的分子数决定C ．不同的气体，若体积不同，则它们所含的分子数也不同D ．气体摩尔体积是指1 mol 任何气体所占的体积约为22.4L8．在0℃一个大气压下，在关于H 2、O 2、CH 4三种气体的叙述正确的是( )A ．其密度比等于物质的量的比B ．其密度比等于分子量的比C ．等质量的三种气体，其体积比等于分子量的倒数比D ．等体积的三种气体，其物质的量的比等于分子量的比9．同温同压下，等质量的SO 2和CO 2相比较，下列叙述正确的是( )A ．体积比是1：1B ．体积比是11：16C ．密度比是16：11D ．密度比是11：1610．下列两种气体的分子数一定相等的是( )A ．质量相等，密度不等的N 2和C 2H 4B ．等体积等密度的CO 和C 2H 4 C ．等温等体积的O 2和N 2D ．等压等体积的N 2和CO 211．将CH 4、CO 、H 2三种气体分装在三个容器中，等T 和ρ相等时，三种气体产生的压强大小是( )A ．p （CO ）＞p （CH 4）＞p （H 2）B ．p （CO ）＞p （H 2）＞p （CH 4）C ．p （H 2）＞p （CH 4）＞p （CO ）D ．p （H 2）＞p （CO ）＞p （CH 4）五、M 的几种计算方法①M ＝m n ②M A ＝DM B ③M ＝22.4ρ ④M ＝n 1%M 1 + n 2%M 2 12．2A △ B ＋2C ＋2D ，若B 、C 、D 的混合物的密度是同条件下H 2的d 倍，那么M A = d 。

人教版高中物理选修3-1库仑定律补充练习1

高中物理学习材料（马鸣风萧萧**整理制作）库仑定律补充练习11．下列关于点电荷的说法，正确的是( )A ．点电荷一定是电荷量很小的电荷B ．点电荷是一种理想化模型，实际不存在C ．只有体积很小的带电体，才能作为点电荷D ．两均匀带电的绝缘球体在计算库仑力时可视为点电荷2．有两个点电荷，带电荷量分别是Q 和q ，相距d ，相互作用力为F ，为使作用力加倍，下列可行的是( )A ．使Q 加倍B ．使q 减为原来的一半C ．使Q 和q 都加倍D ．使d 减为原来的一半3．关于库仑定律的公式F ＝k Q 1Q 2r 2，下列说法正确的是( ) A ．当真空中的两个点电荷间的距离r →∞时，它们之间的静电力F →0B ．当真空中的两个电荷间的距离r →0时，它们之间的静电力F →∞C ．当两个点电荷之间的距离r →∞时，库仑定律的公式就不适用了D ．当两个电荷之间的距离r →0时，电荷不能看成是点电荷，库仑定律的公式就不适用了4．人类已探明某星球带负电，假设它是一个均匀带电的球体，将一带负电的粉尘置于该星球表面h 处，恰处于悬浮状态。

现设科学家将同样的带电粉尘带到距星球表面2h 处于无初速释放，则此带电粉尘将( )A ．向星球地心方向下落B ．飞向太空C ．仍在那里悬浮D ．沿星球自转的线速度方向飞出5如图所示，半径相同的两个金属小球A 、B 带有电荷量大小相等的电荷，相隔一定的距离，两球之间的相互吸引力大小为F ，今用第三个半径相同的不带电的金属小球C 先后与A 、B 两个球接触后移开，这时，A 、B 两个球之间的相互作用力大小是( )A.18FB.14FC.38FD.34F 6．如图所示，用两根等长的细线各悬挂一个小球，并系于同一点，已知两球质量相同，当它们带上同种点电荷时，相距r 1而平衡。

若使它们的电荷量都减少一半，待它们重新平衡后，两球间的距离将( )A ．大于r 12B ．等于r 12C ．小于r 12D ．不能确定 7．两个质量分别是m 1、m 2的小球，各用丝线悬挂在同一点，当两球分别带同种电荷，且电荷量分别为q 1、q 2时，两丝线张开一定的角度θ1、θ2，两球位于同一水平线上，如图所示，则下列说法正确的是( )A ．若m 1＞m 2，则θ1＞θ2B ．若m 1＝m 2，则θ1＝θ2C ．若m 1＜m 2，则θ1＞θ2D ．若q 1＝q 2，则θ1＝θ28.在粗糙绝缘的水平面上有一物体A 带正电，另一带正电的物体B 沿着以A 为圆心的圆弧由P 到Q 缓慢地从物体A 的正上方经过，若此过程中物体A 始终保持静止，A 、B 两物体可视为质点且只考虑它们之间有库仑力的作用，则下列说法正确的是( )A ．物体A 受到地面的支持力先增大后减小B ．物体A 受到地面的支持力保持不变C ．物体A 受到地面的摩擦力先减小后增大D ．库仑力对物体B 先做正功后做负功9．如图所示，把一个带电小球A 固定在光滑的水平绝缘桌面上，在桌面的另一处放置带电小球B 。

《计量经济学》补充练习题1

《计量经济学》补充练习题一、填空1.运用计量经济学研究经济问题，一般可分为四个步骤：、估计参数、和模型应用。

2.在模型古典假定成立的情况下，多元线性回归模型参数的最小二乘估计具有、和。

3.经济计量学对模型“线性”含义有两种解释，一种是另一种是。

通常线性回归更关注第二种解释。

4.写出一元线性回归的总体模型和样本模型：总体模型：。

样本模型：。

5.在线性回归中总离差平方和的分解公式为：TSS=RSS+ESS，写出它们的表达式：RSS= 。

ESS= 。

6.一元线性回归模型中，参数估计值b服从分布，写出期望和方差：。

7.拟合优度与相关系数的关系是。

8.容易产生异方差的数据是。

9.计量经济模型四要素分别是。

10.容易产生自相关的数据是。

二、单选1.狭义计量经济模型是指（）。

A.投入产出模型B.生产函数模型C.包含随机方程的经济数学模型D.模糊数学模型2.计量经济学模型是（）A.揭示经济活动中各个因素之间的定量关系，用随机性的数学方程加以描述B.揭示经济活动中各个因素之间的定性关系，用随机性的数学方程加以描述C.揭示经济活动中各个因素之间的定量关系，用非随机性的数学方程加以描述D.揭示经济活动中各个因素之间的因果关系，用随机性的数学方程加以描述3.已知某一直线回归方程的可决系数为0.64，则解释变量与被解释变量间的线性相关系数绝对值为（）。

A.0.64B.0.8C.0.4D.0.324.选择模型的数学形式的主要依据是（）A.数理统计理论B.经济统计理论C.经济行为理论D.数学理论5.在有30n =的一组样本、包含3个解释变量的线性回归模型中，计算得到多重决定系数为0.8500，则调整后的多重决定系数为（）。

A.0.8603B.0.8389C.0.8655D.0.83276.在回归分析中，定义的变量满足（）。

A.解释变量和被解释变量都是随机变量B.解释变量为非随机变量，被解释变量为随机变量C.解释变量和被解释变量都为非随机变量D.解释变量为随机变量，被解释变量为非随机变量7.考察某地区农作物种植面积与农作物产值的关系，建立一元线性回归模型01i i i Y X ββμ=++，采用30个样本，根据普通最小二乘法得1ˆ0.54β=，对应的标准差1ˆ()0.045S β=，那么，1β对应的t 统计量为（）。

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补充习题
1. 先估一估数学课本的长、宽各是多少厘米，再量一量。

2. 选一选。

拃步
（1）教室的长度用（）估测比较合适。

（2）课桌的长用（）估测比较合适。

（3）文具盒的长用（）估测比较合适。

3. 帮小明改日记。

今天，我在参加200厘米的赛跑中获得了第一名的好成绩，老师奖给我一本长20米，宽16厘米的硬皮本。

我高兴地向前一下蹦了100米，不料撞到一棵高5厘米的树上。

参考答案：
1.长24厘米，宽16厘米
2.（1）步（2）拃（3）拃
3. 今天，我在参加200厘米（米）的赛跑中获得了第一名的好成绩，老师奖给我一本长20米（厘米），宽16厘米的硬皮本。

我高兴地向前一下蹦了100米（厘米），不料撞到一棵高5厘米（米）的树上。