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STARTER 及UNIT1-2测试题

Starter部分及Unit1-2测试题姓名成绩一、单项选择（共30分, 每小题1分）( )1.下列字母与字母Ii含有相同的元音音素。

A.RrB.GgC.Yy( )2.下列各组字母中不含元音字母的是。

A.a c d fB.g h k mC.j i n r( )3.—What’s NBA in Chinese? —It’s .A.英国广播公司B.中国中央电视台C.(美国)全国篮球协会( )4.在26个字母中和可以单独成词。

A.R;EB. A;IC.O;U( )5.—What’s this in English? —.A.I’m fineB.It’s greenC.It’s a key.( )6.There is (有)“m” in the word “name”.A.aB.anC.the( )7.—Are Kate’s ? —No, they aren’t.A.this;pictureB.that;pictureC.these;pictures( )8.This is Li Feng. is a kind man.A.HimB.HerC.He( )9.Those are .A.two my sistersB.my two sistersC.two my sister( )10.Here some books for you,Tom.A.areB.amC.is( )11.—Is this your ,Emma? —Yes,she’s my uncle’s daughter.A.cousinB.sisterC.friend( )12.These are Rose and Linda. my .A.She’s;friendB.They’re;friendC.They’re;friends( )13.Thanks the photo your family.A.of;forB.of;inC.for;of( ) 14.—Is your _____ Jenny? -- No, I’m Linda.A. nameB. friendC. color( ) 15.--- Excuse me, are you Jenny? --- __________.A. I am Jenny.B. Yes, I’mC. Yes, I am.( ) 16. --Is that your mother? -- __________ .A. Yes, it is.B. Yes, she is.C. No, he’s not.( ) 17. --Is your name Rose? --_________.A. Yes, I’mB. Yes, I amC. Yes, it is( ) 18.- –Is this your English book? --No, I think(认为) it’s _________.A. TomB. Tom’sC. my teachers’( ) 19.-- –How do you _____ this word? - -- A-P-P-L-E, apple.A. meetB. spellC. say( ) 20. Chinese names don’t have _________names.A. givenB. middleC. last( ) 21. ---________ they? ---They are my teachers.A. What’sB. What’reC.Who’re( ) 22. ---___________. --- It’s a ruler.A. What’s this in English?B. Can you spell it, please?C. Spell your name, please.( ) 23. ---How do you do? ---_____________A. I am OK.B. I am 13.C. How do you do?( ) 24. Sorry, this is not _____ID card.A. an myB. myC. my an( ) 25. ---_______your telephone number? ---It’s 398-13652A .How’s B. What’s C. Where’s( ) 26. ---Are these your books? --- .A .Yes, they are B. Yes, these are C. No, they aren’t.( ) 27. --- Hello, my name is Alice --- .A. Fine, thanks.B. Hello, Alice. My name is Lucy.C.Are you Alice?( )28. Which pair of the words with the underlined letters has the same sound?A. ruler blueB. now knowC. black parent( )29. In the following words, which underlined letters have a different sound from the others?A. thanksB. theseC. father( )30. Which word of the following doesn’t have the same stress as the others?A. jacketB. helloC. picture二.完形填空(10分)Hello,my friends.I 31 Guo Li.Nice to meet you!I want to 32 something about my 33.Look at this 34!These are my grandparents.This 35 my father,and his name is Guo Jianshe.This is my mother,and 36 name is Ma Yun.We are in Beijing 37 my grandparents.And these are my 38 and my uncle.My aunt’s name is Hao Xia and my 39 name is Ma Dong.Ma Ke is their daughter.She is my 40.Ma Ke and her parents are in Shanghai.I have a happy family.What about you?（）31.A.be B.am C.is（）32.A.listen B.look C.say（）33.A.family B.school （）34.A.map B.quilt C.picture（）35.A.be B.am C.is（）36.A.her B.his C.my（）37.A.to B.on C.with（）38.A.sister B.mom C.aunt（）39.A.brother’s B.uncle’s C.dad’s（）40.A.student B.sister C.cousin三、阅读理解（20分, 每小题1分）（A）Good morning, everyone! Nice to meet you in China. I’m an American girl (美国女孩). My first name is Gina and Smith is my last name. My telephone number is eight five eight six seven eight eight. This is my good friends. She is a Chinese girl. Her name is Sun Mei. Her telephone number is eight six seven four two zero nine.What’s that in English? Oh, yes, it’s a CD. It’s Sun Mei’s CD. She likes music very much. What’s your name, my friend？ Please tell me.( ) 41. What’s the American girl’s name?A. Gina MillerB. Gina SmithC. Mary Smith( ) 42. Sun Mei is _________.A. Gina’s American friendB. Gina’s Chinese friendC. Gina’s Chinese name( ) 43. What’s Sun Mei’s telephone number?A. 858-6788B. 867-4209C. 876-4029( ) 44. What does the underlined word “music” mean in Chinese(music的中文意思是什么)？A. 运动B. 玩具C. 音乐( ) 45. From the passage, we can know(知道)____________.A. Gina is in China now.B. Gina buys（买）the CD for Sun Mei.C. Gina’s telephone number is 868-6778.(B)根据表格内容，选择正确答案。

牛津沪教版英语八年级下 Unit1-Unit2语法知识点整合

A .don't make B. not make C. not making D .not to make8. An army spokesman stressed that all the soldiers had been ordered _____clear warnings before firing any shots.A .to issue B. being issued C. to have issued D. to be issued9. I'd rather have a room of my own, however small it is, than_______ a room with someone else.A. to shareB. to have sharedC. shareD. sharing10. The bank is reported in the local newspaper_________ in broad daylight yesterday.A. robbedB. to have been robbedC. being robbedD. having been robbed11. A number of paintings in the castle are believed ________in a fire.A. being destroyedB. having been destroyedC. to be destroyedD. to have been destroyed12. The meeting _______ next week is sure to be a great success.A. to take placeB. to be taken placeC. to have taken placeD. being taken place13. As a result of my laziness, I failed ________ my work in time.A. and finishedB. to finishC. and finishingD. to finished14. I am sorry ______ written you a letter at the time.A. to have notB. to not haveC. not to haveD. not having15. Will you lend him a magazine _________?A. to be readB. for readingC. to readD. he read16. He could do nothing but _______for the bus _________.A. wait, to comeB. wait; comeC. waiting; comingD. waited; came17 .It is a problem that doesn't need ________ right now.A. to solveB. solvingC. being solvedD. to be solving18. There's a man at the reception desk who seems very angry and I think he means _______ trouble.A. makingB. to makeC. to have madeD. having made19. I remember _______him _______the bike needed __________.A. hearing, saying, to repairB. to hear, say, to repairC. hearing, say, repairingD. to hear, saying, to be repaired20. --- You should have thanked her before you left.--- I meant _________, but when I was leaving I couldn't find her anywhere.A. to doB. toC. doingD. doing so21. Robert is said to __________ abroad, but I don't know what country he studied in.A. to have studiedB. to study B. to be studying D. to have been studying22. I'm gong to Xi'an next week. Have you anything __________ to your parents?A. to takeB. to be takenC. to be bought toD. to buy23. when are they __________ in their plan?A. handB. handedC. to handD. give24. In such dry weather, the flowers will have to be watered if they _____________.A. have survivedB. are to surviveC. would survivedD. will survive25. When we hurried to the station, there happened ________ no bus at that time.A. to haveB. to beC. havingD. being26. I lost my way in complete darkness and, _________ matters worse, it began to rain.A. madeB. having madeC. makingD. to make27. At ________ time does the salesgirl get up late in the morning, though she is always too busy _________a good rest.A. no, to takeB. no, takingC. any, to takeD. one, taking28. --Are you a student? --No, but I used _________.A. to beB. to wasC. to doD. to be a29. I stopped to listen, and my son seemed _________ himself _________ in the living room.A. to enjoy, to shutB. to be enjoying, shuttingC. to be enjoying, shutD. to have enjoyed, having shut30. With a lot of difficult problems _________, the newly-elected president is having a hard time.A. settledB. settlingC. to settleD. being settled31. We're leaving at six o'clock, and hope _________ most of the journey by lunch time.A. to doB. to have doneC. to makeD. to have made32. The study of the wild world may help to make the world easier _________.A. understoodB. to be understoodC. to understandD. understand33. Who will you get __________ the project for us?A. designB. to designC. designedD. designing34. It is said in Australia there is more land than the government know __________.A. it what to do withB. what to do it withC. what to do with itD. to do what with it35. We are not allowed __________ outdoors with some other children.A. playingB. to be playingC. to playD. be playing36. Allen had to call a taxi because the box was _________ to carry all the way home.A. much too heavyB. too much heavyC. heavy too muchD. too heavy much37. She feels so strongly that each of us should have a role __________in making the earth a better place to live in.A. to have playedB. to playC. to be playedD. to be playing38. When I handed the report to John, he said that George was the person _________.A. to sendB. for sending itC. to send it toD. for sending it to39. Do let your mother know all the truth, she appears _________ everything.A. to tellB. to be toldC. to be tellingD. to have been told11 / 11。

第16章 1重氮--2

+ –N2Cl
N N
+ sp杂化 –N2HSO4
¡ ¤ ¡ ¤
重氮苯盐酸盐
重氮苯硫酸盐
第一节重氮化反应
§16-1 芳基重氮盐一、芳香族重氮盐的制备——重氮化反应
一级胺与亚硝酸反应，生成重氮盐
C 6H 5NH 2
NaNO2-HCl 0~5 C
O
+ C 6H 5 N
N Cl
能溶于水，水溶液能导电
？
① H3PO2 + H2O ② HCHO + NaOH ③ C2H5OH 邻对位基练习4：有副产物“醚” N2X NO2 NH2 Br Br Br Br Br Br Br
Br
Br
§16-2 重氮盐的性质
CH3 CH3
HNO3 H2SO4 Fe+HCl
CH3
练习5：
CH3
CH3COCl Br2
偶合位置
OH NH2
OH (NH2) OH (NH2)
SO3Na
§16-2 重氮盐的性质
偶氮化合物中的重氮部分和偶氮部分:
H2N N N
HO 3S
NO 2
偶联部分
重氮部分芳香族重氮盐
酚、胺
§16-2 重氮盐的性质例：由萘、联苯胺为原料合成刚果红。
解：
H2N N N N N
H2N
NH2
H2N
NaO 3S
§16-2 重氮盐的性质
被–OH取代 (重氮盐的水解反应) + –OH –N2HSO4 H2O/H+ + N2↑ △
？
注意问题：①使用硫酸盐，氢卤酸盐会有副产物。 SN1 机理： △ –H+ ②酸性条件，防止苯酚与重氮盐偶联。 + –OH2 + 在不适合磺化碱熔的情况下，引入 H2O 实用价值： –OH。碱熔条件 + N2↑ NO2 下，–Br pH=8~10 NO2 –N2X + –OH – N=N – – OH Fe+HCl Br2/Fe 会被 –OH HNO3 练习1： H2SO4 取代。 Br 对羟基偶氮苯 –Cl (副产物) N NH2 SO3H SO OH 2HSO 3H 4

牛津译林版七年级英语下学期期中复习教学案设计(Unit1-Unit2)

七年级英语下学期期中复习教案（U1-U2）教学目标：1、掌握U1-U2重点单词、重点短语2、掌握基数词、序数词的组成与应用【同步知识梳理】Unit 1一、复习单词A、拼读易错的单词palace, Canada, France, Japan, Russia, capital, mile, garden, centre, bathroom, beach, zero, hundred, thousand, million, square, area, fork, fridge, shower, video, machine, message, double, field, inviteB、重点单词用法1、country(pl)__________ balcony (pl) _________ beach (pl.)__________foot (pl)_____________ knife (pl)___________ video (pl)___________study (pl)__________Key:countries, balconies, beaches, feet, knives, videos, studies2、next to (prep.) 紧邻，在……近旁介词，后面加宾语，人称代词用宾格She sits next to___________(I).His classroom is next to_________(I).Key:me, minedian,Canadian,Britain,British,English,Russian,Russian,Russian4、own①(adj.) 自己的用于形容词性物主代词或名词所有格后，加强语气of one’s own 属于某人自己的I have___________(我自己的) bedroom. = I have the bedroom _____________.When children grow up, they will have families__________________.A. on their ownB. of ownC. their own familiesD. of their ownKey: my own, of my own, D②(vt.) 拥有owner (n.) 物主，所有人He______________(own) a big company in New York.He is the______________(own) of a big company in New York.③on one’s own = by oneself = alone 独自The old man lives a_________. (on his own)Key:owns,owner,alone5、square①(adj.) 平方的square metre 平方米Red Square in Moscow is about 91,000 ___________________in size.莫斯科的红场面积约九万一千平方米。

新视野 3 二版练习答案 UNIT1-2

《读写教程 Ⅲ》: Ex. VI, p. 10
VI. Study the following words that can be modified by “practical” and complete the sentences with them.
1. Irrespective of the patient’s age, determined efforts should be made to keep in touch with the family and to give practical _a_d_v_ic_e__.
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V. Exercises—Vocabular y
Back
10. People have been mobilized to build defenses and _____ flooded land as heavy rains continue to fall.
drain
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She thought that caring for Jimmy has enriched her life more than anything else ever could have.
7. Why did the writer invite her friends to Jimmy’s birthday party?
whistles
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V. Exercises—Vocabulary
Back
4. And again she shouted in a high-pitched voice, word by word, with no attempt to _____ herself, “I cannot stand any more.”

新目标英语七年级下册Unit1-2单元检测题

新目标七年级下册单元检测Units1-2III.阅读理解（共35）AI.单项填空(15分)MynameisMary.IstudyatNo.6MiddleSchool.Ihaveabrother.HisnameisJim.Wegetupatsix()1.Jacklikestoplay___violin,buthedoesn’tliketoplay____v_olleyball.inthemorning.Wegoschoolatseventen.Classesbeginatseventhirty.WehavefourlessonsintheA./,theB.the,theC.the,/D./,/morningandtwointheafternoon.()2.Iwanttojointhe_______club.Ican_______well.A.swim,swimB.swimming,swimC.swim,swimsD.swimming,swimming()3.MrSmithisverygoodat___stories.Hecanjointhestory___club.A.tell,tellingB.tells,tellC.telling,tellingD.tell,tell()4.Hecando______。

A.ChinesekungfuB.theChinesekungfuC.China’skungfu ()5.Weneed_____attheoldpeople’shome.Canyou______us?A.help,helpB.tohelp,helpC.tohelp,tohelpAfterschoolweplaygames.Weoftenplayfootball.Wegohomeataboutfive.Wedoourhomework intheevening.Wegotobed（上床睡觉）ataboutnineforty.根据短文内容，判断正T误F（5分）（）1.MaryandJimarefriends.（）2.Theygetupatsixo’clockinthemorning.（）3.Theyhavesevenlessonseveryday（每天）.（）4.Theyoftenplaygamesafterschool.（）5.Theygotobedat9:40intheevening.()6.Areyougood_____oldpeople?Pleasecome____theoldpeople’shome.A.with,atB.with,toC.for,withD.with,forB()7.Ice-creamtastes_______,butitisn’tgood________health.Tomisalovelyboy.Helikesplayingfootballverymuch.Heoftencomesbackbetween4p.mandA.well,forB.good,forC.well,withD.good,with5p.m.Onedayhecomesbacklate.Hismothersays“youcomebackhomelatetoday,Tom”.“()8.---Canshe______amusician?---No,shecan’thaveanewteacher,.Heisamathteacher,”“T H o o m w a i s n s h w e?e rs.”Hismotherasks“Idon’tknow,IA.amB.isC.beD.arethinkIcan’tbe相lie信ve()him”“Howisthat”hismoth“e O r n s a e y m s.o m e n t hesaystwoandthreeisfiveandthenextmomenthesaysoneandfourisfive”Tomanswers（）1.Tomcomeshome_____today.A.at4p.mB.At4:30p.mC.At5p.mD.after5p.m（）2.Tomcomeshomelatebecause()9.He_________at6:00intheafternoon.A.gethomeB.getstohomeC.getshomeD.gotohome()10.He_________hishomework________Sundaymorning.A.doesnt,’onB.don’tdo,inC.don’t,inD.doesn’tdo,onA.heplaysfootballB.heplaysbasketballC.hestudiesmathD.wedon’tknow（）3.Thesentence“Howisthat”(m意e思an是s)()11.GinaandAnnainthemorning.uallyrunsB.runusuallyC.don’tusuallyrun()12.Hehasalife,hedoesn’teat_______.A.healthy,quicklyB.health,quicklyC.unhealthy,quickD.healthy,quick A.HowcanyousaythatB.YourteacherisrightC.TellmemoreaboutthatD.Howdoyoufeel （）4.Whoisright?A.TomB.TeacherC.NoneDmother（）5.Whichofthefollowingsentenceisright?()13.Whattimeisit?-----It’s______now.A.nineandforty-fourB.nine-forty-fourC.nineforty-fourD.nineandfortyfourA.TheteacheriswrongB.TomisrightC.TomiswrongD.Tom’smotheriswrong ()14.Tomusuallyeatsbreakfast6:30themorning.CA.at;onB.in;atC.on;inD.at;inThisisWangBing’sDay.He’sayoungworker.Hisjobiscarry运ing煤c o).a H l(e thinksthat’sgreat.()15.----Canyousingdance?----Icansing.WangBing’sDayA.butB.orC.andD.thenⅡ.完形填空(每小题1分，共10分) 5:10a.m.Don’twork5:20a.m.Gohomebycar 阅读短文，从A，B，C，D四个选项中，选出可以填入空白处的最佳选项。

1,2-二甲苯安全标签

【误食】：饮足量温水，催吐。就ቤተ መጻሕፍቲ ባይዱ。
2、泄漏处理及灭火措施
【泄漏处理】：进行隔离，严格限制出入，切断火源，建议应急处理人员戴自给正压式呼吸器，穿防毒服。小量泄漏：用砂土或其它不燃材料吸附或吸收。
【灭火方法】：喷水冷却容器，可能的话将容器从火场移至空旷处。灭火剂：泡沫、二氧化碳、干粉、砂土。
3、现场急救措施
【皮肤及眼睛接触】：用大量水冲洗，就医。
1,2-二甲苯
易燃有毒！沸点（℃）：144.4
闪点（℃）：16引燃温度（℃）：463
相对密度（水）：0.88相对密度（空气）：3.66
UN NO：1037CN NO：33535
1、危险特性
其蒸气与空气形成爆炸性混合物，遇明火高热能引起燃烧爆炸。与氧化剂能发生强烈反应。其蒸气比空气重，能在较低处扩散到相当远的地方，遇到明火源引起着回燃。

牛津译林版中考英语复习试题七年级下册 Unit 1-2(含答案)

2021-牛津译林版中考英语复习试题7下Unit 1-2(时间：45分钟满分：100)一、选择填空(每小题1分，满分20分)( )1. Now all of us exercise______ than _______ hour a day in and outside school.A. less; aB. more, anC. ; aD.不填; an( )2. I can't buy the dress because I have only ________ money.A. littleB. a littleC. fewD. a few( )3. --How about going shopping on Hunan Road this evening?--________ , but I have to go to a party.A. I can'tB. Sounds greatC. That's rightD. No, I'm sorry ( )4. In my class some students love music, and_________ enjoy reading.A. the otherB. the anotherC. the othersD. others( )5. --A picture of the Eiffel Tower? --Yes, I took it in__________A. LondonB. WashingtonC. ParisD. Bangkok( )6. ---On Peter's _________ birthday, his parents give him a new iPad.--How________ he is!A. nine; luckyB. ninth; luckilyC. nineteen; luckilyD. nineteenth; lucky( )7. --Hello, this is David. Can I speak to Tom?--Yes.__________.A. Tom is meB. This is Tom speakingC. I am TomD. My name is Tom( )8. Jane is shy. She would not invite her classmates _______ speaking English.A. practiseB. practisesC. practisingD. to practise ( )9. _________ people visit Wuhan University and enjoy sakura(樱花) every day.A.Thousands ofB.Five thousand ofC. Thousand ofD. Five thousands( )10. --Come here, I'll tell you about your study.--OK, we're coming.A. anything importantB. something importantC. important anythingD. important something( )11. Before you go to Canada, you need to learn more it.A. fromB. inC. byD. about( )12. --Shall we go to the Palace Museum in the summer holiday?-- . It's the world's biggest palace.A. Sounds greatB. That's too badC. Best wishesD. You're welcome( )13. There is somebody at the door. ________ I go and see who it is?A. ShallB. MustC. WillD. Would( )14.-- Excuse me, sir. Is the swimming pool open all day?-- _______ . Only from 6.30 p.m. to 9.30 p.m.A. Yes, of courseB. That's rightC. Sorry, I'm not sureD. Sorry, I'm afraid not( )15. -- We can invite Nick and Linda to Shanghai Disneyland with us.-- _____________? I'll call them right now.A. Why notB. What forC. WhyD. What( )16. --Listen! There_______I someone ___________ at the door.--It must be your sister.A. is; knockingB. is; knockC. are; knockingD. are; knock( )17. --Stephen Hawking died on March 14. Is there _________ book by Hawking?--Yes. It's on__________ bookshelf over there.A. a; /B. a; theC./; theD. the; a( )18. Let's open the windows to have some __________ air here. 'A. cheapB. expensiveC. carefulD. fresh( )19. It________ __ only about 75 minutes to go to Nanjing by high-speed railway.A. spendsB. costsC. takesD. pays( )20. Why not ___________ your friends for help when you have problems?A. askB. to askC. asksD. asking二、完形填空(每小题1分，，满分15分)Dear daddy,Hey! How's everything 21 ? It's been so many days since you went to Wuhan. Do you still 22 the day before you left? I remember I saw the luggage(行李) in your bedroom. I asked you, "Are you going to leave 23 business?" You smiled and put your hand on my head, saying, 'Tm just tidying up some clothes."Later that night, I learned that you and mom had asked to 24 to Wuhan and were waiting for a phone call. At that moment, I hoped 25 of you would get the call. 26, your phone still rang. I almost cried out, as if I were going to Wuhan myself.The next morning, I got 27 early. During breakfast, you smiled and asked me ifI 28 miss you. I pretended(假装) it was no big 29 and said, "I can send you a message whenever I miss you."When you were leaving, I waved (挥手) to you 30 I couldn't see you anymore. Tears(眼泪) flowed down my face. I later realized it was Lantern Festival. I wrote down "Waiting for you to come back" in my notebook. I knew the people of Wuhan needed you 31 than I did.At night, mom sent me some photos of you and the rest of the medical team. I found you in the photos 32 . I pointed you out and shouted, "Hey, this is my daddy!" I was so proud of you!After you left, I paid more attention 33 the battle(战役) against the new coronavirus(冠状病毒). I wondered whether you would take good care of 34 . Daddy, remember to exercise and get 35 rest.We all miss you every day. I love you, my superhero, forever and ever.KathyFeb 15, 2020 ( )21. A. go B. going C. to go D. to going( )22. A. remember B. realize C. forget D. review( )23. A. to B. on C. for D. at( )24. A. send B. sent C. be sent D. sending( )25. A. neither B. both C. either D. all( )26. A. But B. However C. And D. Otherwise( )27. A. on B. off C. up D. down( )28. A. would B. will C. shall D. can( )29. A. smile B. deal C. laugh D. matter( )30. A. unless B. if C. until D. when( )31. A. many B. much C. more D. better( )32. A. just now B. at once C. at last D. right now( )33. A. to B. onto C. into D. from( )34. A. your B. yourself C. yours D. you( )35. A. lot B. little C. enough D. a lot三、阅读理解(每小题2分，满分10分)A trip to Seoul, South KoreaDay 1Our guide will meet you at Incheon International Airport(仁川国际机场) in the morning. Check in(登记入住) at the five-star King Hotel. Then have lunch at a famous Korean restaurant in the city centre. Enjoy the beautiful scenery(风景) at the Banpo Bridge over the Han River. It turns into beautiful colours at night. And then enjoy Korean seafood near the river.Day 2Have breakfast at the hotel. Visit the Seoul Tower and the Teddy Bear Museum near the hotel. Have famous chicken soup for lunch. After lunch, go to Changdeokgung Palace, a great place to learn about the history of Korea. In the evening, visit Gwangjang Market, which is famous for all kinds of Korean street food.Day 3After breakfast at the hotel, drive to Namsangol Hanok Village. There are five traditional Korean houses there. Tourists can see how Korean people lived in the past, Also, join in traditional Korean activities and enjoy traditional Korean food at Korea House.Day 4Drive to Dongdaemun Market early in the morning and spend half a day shopping. Drive to the airport and fly back to Shanghai.( )36. Tourists will enjoy the beautiful scenery on Day 1.A. before they check inB. after they have lunchC. as soon as they leave the airportD. after they enjoy Korean seafood( )37. How many breakfasts will tourists have at the hotel?A. One.B. Two.C. Three.D. Four.( )38. Tourists can learn about the history of Korean at_________A. the Seoul TowerB. Gwangjang MarketC. Changdeokgung PalaceD. the Teddy Bear Museum( )39. In Namsamgol Hanok Village tourists__________A. can spend haifa day shoppingB. can find five traditional Korean housesC. can't join in an traditional Korean activityD. can't see how Korean people lived in the past( )40. We can see that this Passage is_________.A. a travel planB. a piece of newsC. a sports reportD. a tradition introduction四、用所给词的适当形式填空。

7-3 含氮化合物的合理使用第二课时(教学课件)——高中化学苏教版(2019)必修二

典型例题
答案 (1)2NO2＋2OH－===NO－3 ＋NO－2 ＋H2O (2)NO＋NO2＋2OH－===2NO－2 ＋H2O (3)V(NO2)≥V(NO)或 n(NO2)≥n(NO) (4)100 mL 解析根据反应的化学方程式如下： NO2＋NO＋2NaOH===2NaNO2＋H2O 2NO2＋2NaOH===NaNO2＋NaNO3＋H2O 可知，生成物中氮元素和钠元素的物质的量之比为 1∶1，所以氢氧化钠的物质的量等于氮氧化物中氮原子的物质的量。 n(N)＝0.336＋0.112＋0.112×2 mol＝0.03 mol。
典型例题
4．研究氮及其化合物的性质具有极为重要的意义。 (1)NOx 能形成酸雨，写出 NO2转化为 HNO3 的化学方程式：_________________。 (2)在含 Cu＋的酶的活化中，亚硝酸根离子(NO－2 )可转化为 NO，写出 Cu＋和亚硝酸根离子在酸性溶液中反应的离子方程式：________________________________。 (3)将 38.4 g 铜与 150 mL 一定浓度的硝酸反应，铜完全溶解，产生的 NO 和 NO2 混合气体在标准状况下的体积为 11.2 L，请回答： ①NO2 的体积为________ L。 ②若铜与硝酸刚好反应完全，则原硝酸溶液的浓度约为________ mol·L－1。
典型例题
答案 (1)NO2==光===NO＋O 2NO＋O2===2NO2 O2＋O===O3 (2)3O2==N=O=2=2O3 催化 (3)O3 CH2O、C2H4O
典型例题
2．用氢氧化钠溶液可吸收废气中的氮氧化物，相同条件下， (1)若废气中只含有 NO2 气体，被氢氧化钠溶液吸收时，生成两种盐，则该反应的离子方程式为________________________________________________________________________ ________________________________________________________________________。 (2)若 V(NO)∶V(NO2)＝1 的混合气体被烧碱溶液恰好吸收，只生成一种盐，写出该反应的离子方程式为___________________________________________________________________ _____________________________________________________________________________。 (3)废气中的氮氧化物(NOx)能被烧碱溶液完全吸收的条件是_________________________。 (4)将 336 mL NO、112 mL NO2 和 112 mL N2O4 的混合气体(体积均折算成标准状况的气体体积)缓缓通入盛有 0.3 mol·L－1 NaOH 溶液的烧杯中，气体恰好被完全吸收，则至少需要 NaOH 溶液的体积为________。

Unit1-2基础练习50题2021-2022学年冀教版英语八年级下册(word版含答案)

月考Unit1-2单元基础练50题一、单项选择1. When you stand on the top and look down, you’ll see a small village _______ the hill.A. underB. aboveC. belowD. through2.—Nick, I lost my pen and I couldn’t find _______ anywhere.—There are many pens in that box. Just take _______.A. it; itB. it; oneC. one; itD. one; one3.— Which dress do you prefer, the red one or the green one?—_______. I like blue.A. AnyB. EitherC. NeitherD. Both4. Many students think that singing songs is _______ listening to music.A. more happyB. the most excitingC. as interested asD. as relaxing as5. Don’t worry! We have _______ time to do the work.A. manyB. a lotC. plenty ofD. little6. _______ people watched the rocket flying up into the sky.A. HundredB. HundredsC. Hundred ofD. Hundreds of7. At the meeting, the managers kept arguing about the problem _______ theyreached an agreement.A. afterB. whenC. untilD. since8. We have no coffee. Let’s have some tea _______.A. tooB. yetC. howeverD. instead9.—Let’s go swimming.—I don’t want to go. I am _______ cold water.A. interestedB. interested inC. scaredD. scared of10. There _______ a concert in our school hall next week.A. isB. wasC. will beD. will have11. The ________ of the meeting is to help teachers and parents achieve better communication.A. positionB. progressC. periodD. purpose12. They are filling the box ________ some books.A.inB. ofC. withD. into13. Come here. I’ll tell you ________ about your study.A. anything importantB. something importantC. important anythingD. important something14. That beautiful skirt is ________ cotton.A. made ofB. made intoC. made fromD. made up of15.—Jack hasn’t taken his piano lessons for a long time.—He is considering ______ his piano course and spending more time on his study.A. to dropB. to throwC. droppingD. throwing16. Sue works ________, so she never seems to make mistakes.A. lateB. aloneC. happilyD. carefully17. All the _____ things need air and water. Without air or water, nothing could stay ______.A. living; livingB. living; aliveC. alive; aliveD. alive; living18.—Does the old man have to ________ his wife?—Yes. They have no children to depend on(依靠) .A. look afterB. look forC. look upD. look like19. Oh, look at the hall. It’s ________ to hold hundreds of people.A. tall enoughB. big enoughC. too tallD. too big20. Tom, together with his friends, often ____ to the old people’s home to cheerthe old up.A. goB. goingC. goesD. will go二、词语运用（一）In England, people often talk about the weather because they can have four _______21 (season) in one day. In _______22 morning it is warm. After an hour black clouds come and then it _______23 (rain) hard. The weather _______24(get) a little cold. In the late afternoon the sky will be clear, the sun _______25(come) out again, and it’ll be summer at this time _______26 the day. In England, people can also have summer in winter, _______27 have winter in summer. So in winter they can swim sometimes, and in summer sometimes they should take warm clothes. When you go to England, you will see that some English people _______28 (usual) take an umbrella or a raincoat with them even on a _______29 (sun) morning, but you shouldn’t laugh at them. If you don’t takeone, you will regret (后悔) _______30 (late)in the day. What amazing weather !（二）In spring, dust storms are often seen in the ________31(north) part of China. When there is a dust storm, it gets windy and ________32(dirt) . A lot of rich lands have turned ________33 desert. People are worried. To stop dust storms, our government encourages people ________34(plant) more trees. They can hold the soil in place ________35(tight) . They can also make ________36 air clean and fresh. But do you know ________37 to plant a tree?First, dig a large enough hole to hold the ________38 (root) of the seedling. Then put the seedling right in the hole. Make sure it _______39(be) straight. Cover the hole with soil. Finally, water the tree with enough water. It is fun and _______40(please) to plant trees. Why not have a try?三、连词成句41. do, spring, you, long for, warm______________________________________________________________?42. play, shall, class, soccer, we, after______________________________________________________________?43. making, don’t, mistakes, be scared of______________________________________________________________.44. we, happily, a, went, on, field, trip, yesterday______________________________________________________________.45. a great time, we, what, had______________________________________________________________!46. you, basic, do, steps, the, know_______________________________________________________________?47. many, there, in, how, plants, nature, are_______________________________________________________________?48. take, the, plants, from, sun, energy_______________________________________________________________.49. amazing, people, the, makes, story, laugh_______________________________________________________________.50. flowers, the, open, sunset, some, after_______________________________________________________________.参考答案：一、1-5 CBCDC 6-10 DCDDC 11-15 DCBAC 16-20 DBABC二、21. seasons 22. the 23. rains 24. gets 25. will come 26. of 27. or 28. usually 29. sunny 30. later31. northern 32. dirty 33. into 34. to plant 35. tightly 36. the 37. how 38. roots 39. is 40. pleasant三、41. Do you long for warm spring42. Shall we play soccer after class43. Don’t be scared of making mistakes44. We went on a field trip happily yesterday45. What a great time we had46. Do you know the basic steps47. How many plants are there in nature48. Plants take energy from the sun49. The amazing story makes people laugh50. Some flowers open after the sunset。

流畅英语口语教程unit1-2

• Vocabulary on P4 sister-in-law:
• She could be any of the following : the wife of your brother;the sister of your husband;the sister of your wife. stepsister:
Discussion
• Who is your oldest relative? Who is your youngest relative?
• Which side of the family is bigger: your father's side or your mother's side?
Check your homework!
1. The conversation matches picture __1_. Is Beth interested in Adam's weekend? No.
2. Des Beth sound more interested this time?
Yes, she does.
3. Listen and repeat
4. Complete the conversation in pairs and try to
read it in an exaggerated intonation.
• 2) I've never heard of it. (That sounds interesting. That sounds great.)

Learning Tips
a. Read as much as possible. Graded readers are perfect.

１，３，５－三（甲硝胺基）－２，４，６－三硝基苯的合成、单晶结构与性能

第３９卷　第１期２０２４年３月西　南　科　技　大　学　学　报ＪｏｕｒｎａｌｏｆＳｏｕｔｈｗｅｓｔＵｎｉｖｅｒｓｉｔｙｏｆＳｃｉｅｎｃｅａｎｄＴｅｃｈｎｏｌｏｇｙＶｏｌ．３９Ｎｏ．１Ｍａｒ．２０２４ＤＯＩ：１０．２００３６／ｊ．ｃｎｋｉ．１６７１８７５５．２０２４．０１．００２收稿日期：２０２３－０３－３１；修回日期：２０２３－０５－０８基金项目：国家自然科学基金项目（２２０７５２６０）；四川省自然科学基金面上项目（２０２２ＮＳＦＳＣ０２８８）作者简介：第一作者，董秦（１９９８—），女，硕士研究生；通信作者，杨海君（１９７６—），男，教授，研究方向为新型有机功能材料、新型含能材料合成及性能研究，Ｅｍａｉｌ：ｙａｎｇｈａｉｊｕｎ＠ｓｗｕｓｔ．ｅｄｕ．ｃｎ１，３，５－三（甲硝胺基）－２，４，６－三硝基苯的合成、单晶结构与性能董　秦　唐思宇　罗郑航　杨海君（西南科技大学材料与化学学院　四川绵阳　６２１０１０）摘要：以１，３，５－三氯－２，４，６－三硝基苯（化合物１，ＴＣＴＮＢ）为原料，经甲胺化、硝化反应得到１，３，５－三（甲硝胺基）－２，４，６－三硝基苯（化合物３）。

优化合成工艺获得了制备的最佳工艺条件，总产率达７４．７％。

采用傅里叶红外光谱仪、核磁共振仪、差示扫描量热仪、热重分析仪和Ｘ射线单晶衍射仪等对化合物３及其中间产物进行了表征。

单晶数据显示，化合物３晶体属于三斜晶系，Ｐ１空间群。

采用Ｋｉｓｓｉｎｇｅｒ法、Ｒｏｇｅｒｓ法和Ａｒｒｈｅｎｉｕｓ法计算化合物３的表观活化能Ｅａ为１５７．８１ｋＪ·ｍｏｌ－１，指前因子Ａ为１２．７９×１０１６ｍｉｎ－１，分解速率常数ｋ为２．９１×１０－１１，热爆炸临界温度Ｔｂ为２０６．５２℃。

采用Ｋａｍｌｅｔ－Ｊａｃｏｂｓ半经验方程预测化合物３的爆速为７９９０ｍ·ｓ－１，爆压为２６．６ＧＰａ。

关键词：含能材料　多硝基芳烃　合成　热分解动力学　爆轰性能中图分类号：ＴＪ５５；Ｏ６４文献标志码：Ａ文章编号：１６７１－８７５５（２０２４）０１－０００９－０９Ｓｙｎｔｈｅｓｉｓ，ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅａｎｄＰｒｏｐｅｒｔｉｅｓｏｆ１，３，５Ｔｒｉｓ（ｍｅｔｈｙｌｎｉｔｒｏａｍｉｎｏ）－２，４，６ｔｒｉｎｉｔｒｏｂｅｎｚｅｎｅＤＯＮＧＱｉｎ，ＴＡＮＧＳｉｙｕ，ＬＵＯＺｈｅｎｇｈａｎｇ，ＹＡＮＧＨａｉｊｕｎ（ＳｃｈｏｏｌｏｆＭａｔｅｒｉａｌｓａｎｄＣｈｅｍｉｓｔｒｙ，ＳｏｕｔｈｗｅｓｔＵｎｉｖｅｒｓｉｔｙｏｆＳｃｉｅｎｃｅａｎｄＴｅｃｈｎｏｌｏｇｙ，Ｍｉａｎｙａｎｇ６２１０１０，Ｓｉｃｈｕａｎ，Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ：１，３，５Ｔｒｉｓ（ｍｅｔｈｙｌｎｉｔｒｏａｍｉｎｏ）－２，４，６ｔｒｉｎｉｔｒｏｂｅｎｚｅｎｅ（３）ｗａｓｓｙｎｔｈｅｓｉｚｅｄｔｈｒｏｕｇｈｍｅｔｈｙｌａｍｉｎａｔｉｏｎａｎｄｎｉｔｒａｔｉｏｎｓｔａｒｔｉｎｇｆｒｏｍ１，３，５ｔｒｉｃｈｌｏｒｏ－２，４，６ｔｒｉｎｉｔｒｏｂｅｎｚｅｎｅ（１，ＴＣＴＮＢ），ｏｆｗｈｉｃｈｔｈｅｏｐｔｉｍａｌｐｒｏｃｅｓｓｗａｓｏｂｔａｉｎｅｄｗｉｔｈａｔｏｔａｌｙｉｅｌｄｕｐｔｏ７４．７％．Ｃｏｍｐｏｕｎｄ３ａｎｄｉｔｓｉｎｔｅｒｍｅｄｉａｔｅｗｅｒｅｃｈａｒａｃｔｅｒｉｚｅｄｂｙＦＴ－ＩＲ，ＮＭＲ，ＤＳＣ－ＴＧ，Ｘｒａｙｓｉｎｇｌｅｃｒｙｓｔａｌｄｉｆｆｒａｃｔｉｏｎ，ｅｔｃ．Ｃｒｙｓｔａｌｄａｔａｓｈｏｗｃｏｍｐｏｕｎｄ３ｃｒｙｓｔａｌｂｅｌｏｎｇｓｔｏａｔｒｉｃｌｉｎｉｃｓｙｓｔｅｍｗｉｔｈｓｐａｃｅｇｒｏｕｐＰ１．Ｔｈｅｔｈｅｒｍａｌｄｅｃｏｍｐｏｓｉｔｉｏｎｋｉｎｅｔｉｃｐａｒａｍｅｔｅｒｓｏｆｃｏｍｐｏｕｎｄ３ｗｅｒｅｃａｌｃｕｌａｔｅｄｂｙＫｉｓｓｉｎｇｅｒ，ＲｏｇｅｒｓａｎｄＡｒｒｈｅｎｉｕｓｍｅｔｈｏｄｓ，ｓｈｏｗｉｎｇｔｈａｔｔｈｅａｐｐａｒｅｎｔａｃｔｉｖａｔｉｏｎｅｎｅｒｇｙ，Ｅａ，ｉｓ１５７．８１ｋＪ·ｍｏｌ－１，ｔｈｅｐｒｅｅｘｐｏｎｅｎｔｉａｌｆａｃｔｏｒ，Ａ，ｉｓ１２．７９×１０１６ｍｉｎ－１，ｔｈｅｄｅｃｏｍｐｏｓｉｔｉｏｎｒａｔｅｃｏｎｓｔａｎｔ，ｋ，ｉｓ２．９１×１０１１，ａｎｄｔｈｅｔｈｅｒｍａｌｅｘｐｌｏｓｉｏｎｃｒｉｔｉｃａｌｐｏｉｎｔ，Ｔｂ，ｉｓ２０６．５２℃．Ｔｈｅｄｅｔｏｎａｔｉｏｎｖｅｌｏｃｉｔｙａｎｄｄｅｔｏｎａｔｉｏｎｐｒｅｓｓｕｒｅｏｆｃｏｍｐｏｕｎｄ３ｗｅｒｅ７９９０ｍ·ｓ－１ａｎｄ２６．６ＧＰａｔｈｒｏｕｇｈＫａｍｌｅｔ－Ｊａｃｏｂｓｅｑｕａｔｉｏｎｃａｌｃｕｌａｔｉｏｎ．Ｋｅｙｗｏｒｄｓ：Ｅｎｅｒｇｅｔｉｃｍａｔｅｒｉａｌ；Ｐｏｌｙｎｉｔｒｏａｒｅｎｅ；Ｓｙｎｔｈｅｓｉｓ；Ｔｈｅｒｍａｌｄｅｃｏｍｐｏｓｉｔｉｏｎｋｉｎｅｔｉｃｓ；Ｄｅｔｏｎａｔｉｏｎｐｅｒｆｏｒｍａｎｃｅ多硝基苯类单质炸药是重要的含能材料［１］。

人教版高中英语必修一Unit 1-2 必背

高一必修一单元根底过关Unit 1 Friendship 必背重点单词upset adj.心烦意乱的，不安的vt. (upset，upset)使不安，使心ignore vt.不理会，无视calm vt．vi.〔使〕平静，〔使〕镇定adj.平静的，镇静的concern vt.〔使〕担忧，关系到n.关心，关注loose adj.松的，松开的German adj.德国的，德国人的n.德国人，德语series n．连续，系列outdoors adv.在户外，在野外outdoor adj．户外的反义词：indoors adv.在户内indoor adj.户内的dusk n.黄昏，黄昏反义词：dawn n．黎明thunder n.，雷声，雷vi．打雷，雷鸣entire adj.整个的，全部的entirely adv.完全地，整个地power n．才能，力量，权利，电力curtain n.窗帘，门帘，幕布dust n．灰尘partner n.伙伴，合作者，合伙人exactly adv.确实如此，正是，确切地grateful adj.感谢的，表示谢意的dislike vt.不喜欢，厌恶tip n．尖，尖端，小费，提示，建议secondly adv.第二，其次swap vitem n.工程，条款重点短语add up合计，加起来add up to总计add to增添calm (…) down〔使〕平静下来have got to不得不；必须be concerned about关心，挂念walk the dog遛狗go through经历be concerned about关心，挂念be concerned with与……有关set down写下，记下，放下a series of 一连串的，一系列on purpose成心in order to为了……at dusk在黄昏时刻face to face面对面地no longer/not… any longer不再……be crazy about对……迷恋get along with与……相处，进展fall in love相爱，爱上fall in love with爱上……disagree with不同意……，不适宜……be grateful to sb．感谢某人join in参加，参加〔某项活动〕ask for some advice征求建议have trouble (in) doing sth．有困难做某事重点句型1. While walking the dog, you were careless and it got loose and was hit by a car.当遛狗时，你是粗心的，它松开了并被汽车撞了。

克列门蒂小奏鸣曲Op.36 之No.1与No.2对比研究

克列门蒂小奏鸣曲Op.36 之No.1与No.2对比研究作者：王晓雨来源：《艺术评鉴》2021年第20期摘要：钢琴作品分析是钢琴演奏前的基础与前提，属于准备阶段。

钢琴作品分析是理论部分，它包括创作背景、体裁、曲式结构、调式调性等;钢琴演奏是实践操作，需要一定的演奏技巧。

两者的关系是理论指导实践，实践结合理论，但是在實际的教学中，作品分析环节时常被忽略，导致演奏者不能准确的把握音乐特点、风格及表现手法。

换言之，作品分析能力的高低直接决定了演奏水平的优劣。

本文以克列门蒂小奏鸣曲Op.36 之No.1与No.2进行比对，从曲式结构、旋律和声与节奏、演奏技巧等三个方面进行了初步探讨。

关键词：奏鸣曲式旋律和声与节奏调式调性中图分类号：J605文献标识码：A文章编号：1008-3359（2021）20-0063-03欧洲钢琴艺术大致有四个历史时期：中世纪至巴洛克时期、古典时期、浪漫时期、现代时期。

每个历史时期的音乐风格和内容都不尽相同。

例如古典主义时期的音乐主要是以抒发个人感情，追求精致明朗、轻松愉悦的主调音乐为主流。

这一历史时期最具代表性的作曲家有约瑟夫·海顿、莫扎特、克列门蒂、贝多芬、车尔尼等。

其中克列门蒂创作的奏鸣曲就兼具了巴洛克时期精致的对位法与古典时期的主调音乐特点，1817年他编辑的钢琴练习曲集《艺术津梁》至今仍是现代钢琴教学中重要的教材之一。

本文以克列门蒂小奏鸣曲Op.36 之No.1与No.2进行比对，从曲式结构、旋律和声与节奏、演奏技巧等三个方面进行了初步的探讨。

一、曲式结构的对比克列门蒂Muzio clementi（1752-1832），意大利作曲家、钢琴家、指挥家、音乐出版商和钢琴教师，一生跨越从巴洛克主义到古典主义到浪漫主义三个伟大时代，创作了110首钢琴奏鸣曲，被称为“钢琴奏鸣曲之父”。

音乐风格愉悦快乐，旋律自由活泼流畅，充满活力与朝气。

（一）克列门蒂小奏鸣曲Op.36 No.1的曲式结构分析如下：第一乐章的曲式结构是奏鸣曲式：呈示部、展开部、再现部。

no的分子轨道书写方式

no的分子轨道书写方式如下：
1s、2s、2px、2py、2pz、3s、3px、3py、3pz。

其中，$2px、2py、2pz$是成键轨道，能量与激发态电子的能量相当，$3px$和$3py$是反键轨道。

NO分子中存在一个σ键和两个π键。

其中，氮原子的$2p$轨道上的电子跃迁到氧原子的$2p$轨道，形成一个三中心四电子的$\pi$键。

此外，氮原子的另一个$2p$轨道和氧原子的一个$2p$轨道重叠形成另一个$\pi$键。

因此，NO分子中存在两个未成对的电子，其分子轨道书写方式需要使用双键轨道。

总之，no的分子轨道书写方式可以按照1s-2s-2px-2py-2pz-3s-3px-3py-3pz的形式进行书写，其中成键轨道包括$2px、2py、3px$和反键轨道包括$2pz$和$3px$。

这些轨道能够容纳电子，并构成NO分子的电子结构。

请注意，分子轨道是由原子轨道组成的，不同的原子轨道可以按照一定的顺序组合成分子轨道。

因此，具体的书写方式可能会因书写者的习惯和计算结果的差异而略有不同。

此外，由于电子在分子轨道中分布并不像在原子轨道中那样连续且规则，因此可能存在一些微小的偏差和误差。

以上信息仅供参考，如需了解更多信息，建议咨询专业人士。

浙江省杭州市开元中学2018-2019年初二第一学期unit1-2测试英语试卷(含答案)(无听力)

杭州市开元中学2018-2019学年unit1-2测试八年级英语试卷第一部分听力（略）第二部分阅读理解（共两节，满分40分）第一节（本题有15小题，每小题2分；共计30分）阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳选项。

ADenis was a thief. He wrote a letter to another thief Pat. But the police got the letter. It reads:BNLD ZS LHCMHFGS ZMC GZUD SGD SGHQSX QNTMCR VHSG XNT.What's it about? How can you read? The policemen were quick. They studied the letter carefully and soon found out what they want. Now let's suppose（假定）you were a policeman. Can you read Denis' letter?Maybe you need some help: When Denis wanted a letter, he wrote down the letter before it in the alphabet (字母表).Now can you read Denis' letter? What must Pat do? When? And what did Denis want?1. In the letter Denis asked Pat to go at______.A.noonB. midnightC.five o'clockD. eight o'clock2. "The policemen were quick.’This means the policemen______.A.read the letter quickly after they got itB. could run very fastC. knew what the letter was about quicklyD. were very careful3. Suppose Pat asked Denis to"meet at the railway station". What would he write?A. LDDW XS WHK UDLDZDB VSZSHNMB. LDDS CV VJG TCKNYCA VCVKQPYC. LDEU BU UIF QZHKVZX TUVUJPOD. LDDS ZS SGD QZHKVZX RSZSHN【答案】1-3 BCDBWhenever the sun rose and the blue sky came up, my father and I used to climb the mountain near my house. Walking together, my father and I used to have a lot of conversations through which I learned lessons from his experiences. He always told me, " you should have goals like climbing the moun tain.” Without the mountain-climbing that we both enjoyed, we couldn’t have enough time to spend together because my father was very busy. I really got a lot from mountain-climbing. It gave me time to talk with my father and to be in deep thought as well as develop my patience.Once we climbed a very high mountain. It was so challenging for me because I was only ten years old. During the first few hours of climbing, I enjoyed the flowers and tree, and the birds’ singing, but as time passed, I got a pain in both of my legs. I wanted to quit climbing. In fact I hated it at that moment, but my father said to me, “You can always see a beautiful sky at the top of the mountain, but you can't see it before you reach the top. Only there at the top can you see all of the nice things, just like in life.”At that time, I was too young to understand his words. But later after that, I got new hope andconfidence. I found myself standing at the top of the sky, which was as clear as crystal(水晶).1. The passage tells us that mountain-climbing was _______ for Father and the writer.A. hardB. enjoyableC. painfulD. comfortable2. The underlined word "quit"in Paragraph 2 means “________”.A. carry onB. put offC. give upD. pick up3.Which of the following is similar in meani ng to the father’s word underlined in paragraph 2?A. You will get all you need at the top of the mountain.B. The sky is always as clear as crystal.C. You can find life is full of nice things.D. Never give up half-way.4.What is the best title of the passage?A. Reaching the Top of the MountainB. Enjoy the Beautiful ViewsC. Conversations Between Father and SonD. Father and I【答案】1-4 BCDACAround the world, people have beliefs about certain food and drink. Some people think that chicken soup is good for a cold. Others believe that it is unhealthy no to eat meat. If you want to know whether there beliefs are true or not, read this text to find out.Belief: Chicken soup helps to fight a cold.Fact: for centuries, people have believed that chicken soup is good for a cold. Now, doctors say this belief may be true. Scientists say that chicken soup contains a special substance that stops a cold from getting worse. Also, heat from the soup can make a person feel better.Belief: A vegetarian diet is unhealthy.Fact: Meat, especially red meat, contains protein( 蛋白质)that the body needs, A person who doesn’t eat meat can get enough protein and be healthy by eating tofu, eggs, nuts and certain vegetables.Belief: Chocolate causes skin trouble.Fact: This is a general belief that is not true! Scientists say that eating chocolate does not cause skin trouble. More often, the cause is stress or not getting enough sleep.Belief: Tea is better than coffee.Fact: A study in 2002 showed that black or green tea contains substances that can protect your heart, fight cancer and make fat less in your body. Coffee does not do this.Belief: Foods like bread and potatoes are fattening.Fact: Bread and potatoes do not contain much fat, or many calories. Eating too much and not exercising can cause us to get heavier. Also adding fattening things like butter to bread and potatoes can raise the number of calories we eat.1. Drinking chicken soup is good for a cold_______.A. because it is deliciousB. because it produces many caloriesC.because of a special substance it containsD. because of a special heat it contains2. Which of these may cause skin trouble?A. Juice or chocolate.B. Cheese or chocolateC. Stress or lack of exerciseD. Stress or lack of sleep3. If you want to lose weight, you need to_______.A. eat less and exercise moreB. eat more and exercise lessC.eat and exercise lessD. eat and exercise more4.Eating bread isn't fattening, but_______.A. eating potatoes isB. eating similar food isC. adding potatoes to it iD. adding butter to it is【答案】1-4 CDADDThere are many expressions with heart. One of them is to"lose your heart"to someone. When that happens, you have fallen in love. But if the person who "won your heart"does not love you, then you are sure to have a"broken heart". In your sadness, you think that the person you loved is "hard-hearted”, and in fact,has a “heart of stone”.You may decide to “pour out your heart “to a friend. Telling someone about your personal problems can often make you feel better.If your friend does not seem to understand how painful your broken heart is, you may ask her to “have a heart". You are asking your friend to show some sympathy( 同情)for your situation. Your friend “ has her heart in the right place"if she says she is sorry for how you fell.If your friend says, " My heart bleeds for you”, she means the opposite. She is a cold-hearted person who doesnot really care about your situation.When you are feeling afraid, "your heart is in your mouth". You might say, for example, that your heart was in your mouth when you asked a bank to lend you some money to pay for a new house.If that bank says no to you, do not"lose heart" .Be"strong-hearted". Sit down with the banker and have a"heart to heart" talk. Be open and honest about your situation. The bank may have a" change of heart"and agree to lend you the money Then you could stop worrying and “put your heart at rest”.27. If your friend has her heart in the right place, she may___________.A. be kind to youB. tell us about her personal informationC. live a happy life D have a right heart28. If your fiend says, "My heart bleeds for you", she may__________.A. not know about her health problemB. have a heart troubleC not care much about youD want to know what happened29. Which expression can best describe the feeling when a student has to see his headmaster?A.A broken heartB. Lose one's heart.C. Heart in one's mouth.D. Have a heart.30.What's the main idea of the last paragraph?A. Don't lose heart if your request is refused.B. A"heart to heart"talk means being open to the bankerC. A strong-hearted person always puts his heart at rest.D. The bank lends money to those who need it【答案】ACCA第二节（共5小题，每小题2分，满分10分）五位母亲Betty,Sara, Gina, Mary和Alice打算为各自的孩子选择一所合适的学校。

no2分子式(一)

no2分子式(一)No2分子式1. No2•解释说明：No2表示一氧化氮，由一个氮原子和两个氧原子组成的化学物质。

它是一种无色的气体，具有刺激性气味。

2. No2-•解释说明：No2-代表亚硝酸根离子，是一种带负电荷的离子。

亚硝酸根离子是一种强氧化剂，常见于一氧化氮与水反应而成的物质。

3. No2+•解释说明：No2+代表亚硝基阳离子，是一种带正电荷的离子。

亚硝基阳离子常见于亚硝酸盐与酸性环境中的反应，它具有一些化学反应中的强还原性。

4. No2Cl•解释说明：No2Cl代表亚硝酰氯，是一种由氮、氧和氯元素组成的化合物。

亚硝酰氯常常用作有机合成中的试剂，可用于生成不同类型的有机亚硝酰化合物。

5. No2F•解释说明：No2F代表亚硝酰氟，是氮、氧和氟元素组成的化合物。

亚硝酰氟在有机合成中是一种重要的试剂，常用于引入亚硝基团到有机分子中。

6. No2O4•解释说明：No2O4代表二氧化氮，是由两个一氧化氮分子组成的化学物质。

二氧化氮是一种红棕色的气体，可用作一种强烈的氧化剂。

7. No2OH•解释说明：No2OH代表亚硝基醇，是一种由氮、氧和氢元素组成的化合物。

亚硝基醇是一类含有亚硝基团的有机化合物，具有一些生物活性。

8. H3no2•解释说明：H3no2代表亚硝酸，是由氮、氧和氢元素组成的酸。

亚硝酸是一种弱酸，常见于氮氧化物在水中的溶解产物。

以上是关于No2分子式相关的分子式举例及解释说明。

不同的分子式代表不同的化学物质，具有不同的性质和用途。