第一篇:2011初二暑假作業(yè)答案--英語(yǔ)
練習(xí)一
present;since;doctor;pollution;open;D;A;B;A;C;B;B;AD;B;was taught;married;swim;came;have been;have lived;was.練習(xí)二
changes;seen;in fact;marry;southern;had fun;won't until;have been married;has kept;different from A A D B D A B B 練習(xí)三
possible;service;althgough;attraction;present;have;since;How many;When buy;Have carried;been;hasn't;sad;去掉but;yet;next to;has been opened;any longer;how to get;It's to read;It is came;but came;have known;are fond of 練習(xí)四
CBACCB;not arrived;yet;How long;heard;Has ever been;Has changed;yet;I have lived here since I was born.It's pleasant to play Chinese chess with my classmates.Although Tom was ill,he went to school.Where is Marry? She has gone to the cinema;Have you been to Beijing?Yes I have.I used to play computer games,now I don't do it.練習(xí)五
a theme park;fast food;wave to us;get married;during the summer holiday;move at high speed;feel excited;the whole day;go sight-seeing;wait for an hour;stop taking photos;have gone to Shanghai;have been to Shanghai;on the second day;
careful;carefully;helpful;helpfully;hopeful;hopefully;wonderful;wonderfully;noisy;noisily;healthy;healthily;lucky;luckily;shiny;shinily;impolite;impossible;unkind;unpleasant;cheerless;harmful;different;present;cross;lovely;present;pleasant;of course;go back;performance;sailing;development;closing;education;feeling;discussing;meaning 練習(xí)六
have seen;saw;were doing;was helping;do;was watching;knocking;were knocking;were making;didn't stop;to read;were dancing;not to take;were clapping;was marching;
The souvenirs are so expensive that I can't buy it.He is rich enough to travel around the world What were you doing when he arrived?
Daniel was swimming in the lake at noon yesterday;
useless;delightful;as;frightened;Italy;happily;meaning;exciting;screamed 練習(xí)七
outside;morning;called;office;suprised;tickets;because;cinema;themselves;taken;CBCADBACBD 練習(xí)八
has been away from Shanghai for two days.can't stop taking photos with them because they look very cute.have been in HongKong for a week have gone to Hongkong twice has gone to Hongkong been away for two days
is quite different from that in Beijing never forget the meaningful experience did you come back from HongKong
arrived here the day before yesterday, I have been back for two days.練習(xí)九
information;change;enjoy;screen;soon;short;repair;is designed by;e-dog for;wasn't evening;has been for;important;used;to go;sold;more;libraries;made;will replace;pleasure;to buy 練習(xí)十
ABBBDCDA
funny;printer;designed;looking;written;correctly;educational;knowledge;passed;
at the same time;come out;send e-mails;get a point;order a set on the Internet;coulds with different colours;play a role;have a dream;many places of interest;be sold out;search for information;a remote control;word-processing;a ten-year-old boy;play a role of;fall asleep;be used widely;double-click on the icon;
What do you usually use the computer do The computer is designed for students
Can I help you? I'd like to buy a personal computer She will help you when necessary 練習(xí)十一
was left;is double-clicked;is produced;is put;to keep;BBBCA 練習(xí)十二
levels;character;uses;village;jump;goal;ask;knowledge;needs;designed;written;starting;has worked;is caught;are marked;typing;was broken;was lost;is made;is used;be clicked 下題 略
練習(xí)十三
searched for;wasn't found;so that can't take;was made to move;has taught for;some photos was for;
The words he said sounded exciting;
This kind of newspaper comes out once a day.I played a role of a English teacher in my dream.The new educational CD-ROMs are sold out.The CD-ROM can be used to test your English vocabulary.reading;who;richest;about;how;have;on;take;interested;lesson;treasure;covered;set;vocabularies;producer.練習(xí)十四 most exciting;months;donating;organization;duties;introducing;decision;was held;to organize;to come;called;
Why don't you join;chose he to be the host of the charity show;
to work for the Project Hope;There is no time to wait;at the right time;must practise more;seemed to happen so quickly;advertise on the Internet;make lots of noise;Spring Bud project 練習(xí)十五
because of the heavy rain;didn't start working;What was;How did Ricky feel in the charity show;It is fun to 注 A:because B because of ABABABAB BFAGD 練習(xí)十六
B 去掉a;C to;C success;C because of;A hope to BBCBACAABC 練習(xí)十七
voluntary;international;rest;advertisement;education;kindness;operations;people;donations;collection
entrance;audience;seats;curtain;light;stage;microphone;performer;clapped;exit
cases of blindness;train the local doctors and nurses;a flying eye hospital;keep on working;be grateful to sb;perform operations;affect sixty per cent of students;have some pocket money left;be proud to dosth.;trat and cure eye problems;be able to buy the medicine;get education;raise money for charities;donate money to 練習(xí)十八
international charities;help poor people;take action to do sth.;mind others;be in hosipital;voluntary doctors;pocket money;organize events to raise money;set up UNICEF;spend money on
advertisement;operation;development;education;kindness;sickness;flying;teaching;organization;tratment;BBADCCCBCCBCBADA 練習(xí)十九
BCADE;
charity;eye;cured;prevented;operated;operations;see;local;skills;knowledge;support
It was started on 11 September,1961
It works to save the earth and its environment Volunteers and donations.To stop air pollution,protect the earth forests and save all plants and animals.In China,it works to save the panda from dying out.In South America, it works to save the Amazon Rainforest ABCCA 練習(xí)二十
連線不太好發(fā),省去吧
performing an operation;pocket money;operated on;medical tratment;used to;were grateful to;Is used to;a flying eye hospital;had a big lunch;cases of blindness;
too weak to;used to get;isn't used to;Did use to watch;used to be;is used;isn't cheap enough BCDAC BCABA CCBCA
練習(xí)二十一
agreement;gladness;collection;illness;prevention;advertisement;development;decision;kindness;gentleness;sadness;sickness;education;organizagtion;improvement;usefulness;movement;happiness;
has cured illness;poor areas for medical tratment;is performing operation on;proud have helped;you keep doing;grateful to because of donations;used to drink;Used to;have lived am used to;used to live;are used to living;operating;attacks;patient;improving;blind;care;indeed;education;international;medical;
B be;C going;C blindness B not;A are;B drink
練習(xí)二十二 CBEADF careless;the longest;itself;elderly;tree planting;unable;further;busier;
BBCBCCCBBD 練習(xí)二十三
join;tough;trail;aim;experience;happen;develop fund-raising spirit;improve;excellent;violin;Februally;experience;especially;record;singing;writing;is held;join;to raise;has been built;to slove;was singing;called;playing;
去掉it;去掉been;across----cross;finished---been over;because of;helping;drinks;drinking;bringing;but去掉
練習(xí)二十四
don't;will;It difficult to;more any other;How can help;will be recorded;with;For;without;on;in;of;By;to
It's wrong to look down on poor people.It is a good season for us to enjoy the beautiful view.It's necessary to be careful when you cross the road.Don't miss the chance you should help each other;It's important for children to have support from parents
第二篇:初二暑假作業(yè)本分英語(yǔ)答案
southern 三
英語(yǔ)
練習(xí)一
一
present since doctor pollution open 二
DABACBBADB 三
has taught married swim
came;has been have lived;was 練習(xí)二
一
changes seen actually marry
二
enjoyed;ourselves won''t;until have;been;married has;kept great;changes 三
AADBDABB 練習(xí)三
一
present service although attraction present 二
have;since How;many When;buy Have;carried
got改成been
didn''t go改成hasn''t gone sadly改成sad but去掉
already改成yet 四
next;to has;been;open any;longer how;to;get It''s;to;read It;is;came but;came have;known borrowed;from 練習(xí)四
一
CBACCB 二
not;arrived;yet
How;long;been How;long;heard Has;ever;been Has;changed;yet 三
I have lived here since I was born.It''s very pleasant to play Chinese chess with my classmates.Although Tom was ill,he still went to school.Where''s Mary?She has gone to the cinema.Have you ever been to Beijing?Yes,I have.I used to play computer games,but now I don''t play it.練習(xí)五
一
a theme park fast food wave to us get married during
the
summber hoilday move at
high
speed feel excited
the whole day go to visit wait for an hour stop taking
photos have
gone
to
Shanghai
have been to
Shanghai on the second day 二
careful;carefully helpful;helpfully hopeful;hopefully wonderful;wonderfully noisy;noisily healthy;healthily
lucky;luckily shiny;shinily 三
(1)
impolite;impossible;rude;unpleasant;
sad;harmful;different;present(2)
although;lovely;present;joyful;sure;go back(3)
performance;sailing;development;closed;
education;feeling;discussed;meaning 練習(xí)六
一
have seen;saw were;doing was helping;do was watching;knocking were making;stopped;to read Were;dancing not to take
were
clapping;were marching 二
The souvenirs are so expensive that we
can''t
buy
them.He is too rich to travel around the world.What were you doing when he arrived? Daniel
was
swimming in the lake
at
noon
yesterday.三
useless delightful as
fat Italy hard meaning exciting screamed 練習(xí)七
一
opposite;morning;called;office;surprised;tickets;by;cinema;themselves;taken 二
CACADBACBA 練習(xí)八
一 has been away from
Shanghai
for two days 2 couldn''t stop taking
photos with them because they look good and cute 3 have been in Hong Kong for a week have been to Hong Kong twice 5 has gone to Hong Kong has been away for two days 6 is quite different from that in Beijing 7 never forget this meaningful experience 8 did you come back from Hong Kong
arrived the day
before yesterdsy,I have been here for two days 練習(xí)九
一
information change
enjoy screen soon restart 二
was;designed;by e-dog;for wasn''t;evening has;been;for 三
important;useful;to
go;sold;more;libraries;made;replac
e;pleasure;to buy 練習(xí)十
一
ADBCDBDA 二
interesting printer designed looking written correctly educational;knowledge passed 三
at the same time come out send and receive e-mails get a point order a package online
different clouds play the role have a dream many places of interest be sold out search for information the remotor control word processing a ten-year-old boy play the role of fall asleep be used widely double-click on the icon What do you usually use computer for This computer is especially designed for
students What
do
you
want to buy I want to buy a personal
computer She will help you when necessary 練習(xí)十一
一
was left
has been double click
has been produced
is;put
to keep
二
BCDBB
練習(xí)十二
一
第三篇:初二年級(jí)英語(yǔ)暑假作業(yè)答案
初二年級(jí)英語(yǔ)暑假作業(yè)答案
第1版暑假作業(yè)(一)A篇1-5BCBAD B篇1-5BAADC C篇1-5CEADB 第2版暑假作業(yè)(二)詞匯運(yùn)用
I.1.around2.show3.together4.article5.bad-tempered II.1-5ACDBC III.1.wallet2.imagine3.storm4.excuse5.waves 6.smile7.strange8.vehicle9.smell10.note
IV.1.death2.colourful3.popularity4.costs5.amazed
6.charities7.funny8.succeeded9.exactly10.expression V.1.line2.instead3.history4.repaired5.pale 6.topic7.trick8.end9.Though10.jacket VI.1.Forexample2.aroundtheworld3.inorderof 4.goeswrong5.laughat 句型演練
I.1.Iforgotwhattobuyatthesupermarket.2.Youmustallowyourmindtohaveenoughrest.3.AgoodwayofimprovingEnglishistoworkhard.4.Howcanwemakeourmemorybetter? 5.HowmanycartoonsweremadebyMrHillintotal? II.1.fullof 2.comeat6o’clock 3.unhappy;wrongwith 4.stopped/kept;fromgoing 5.boringtowatch 6.paintthewallblue 7.areconnectedby 8.gets;intotrouble 9.payattentionto 10.onscreen 第3版暑假作業(yè)(三)語(yǔ)法篇
I.1.longer2.toclean3.tolisten4.plays5.are 6.tostop7.wontfeel8.open9.mend10.terribly II.1-5DDBAC6-10BCDBA III.1.likeeating2.agreat/bigsuccess3.alwaysasking 4.angrywith5.complainabout;stopsworking
6.tofinish;towork7.tokeep;quiet8.wasshown;the1950s 9.tolaughat10.introublewith IV.1.memory2.old3.their 4.toprotect5.hearabout 6.recently7.like8.iscaused9.questions10.first I.1-5DAACB6-10BDABC II.1.in2.nice3.become4.alone5.looked 6.if7.stood8.how9.surprised10.agreed III.(A)1.wrong2.pass3.how4.for5.learnfrom(B)1.that2.what3.seeing/watching4.name 5.Have6.plays7.stars8.his9.lend 10.for(C)1-5DFABE IV.Onepossibleversion:
Manyteenagersaregettingfatterandfatternowadays.Beingtoofatisnotgoodforthem.Therefore,moreandmoreteenagerswanttoloseweight.Hereissomeadviceforthem.First,theyneedtochangetheireatinghabits.Forexample,theycanhavesomesoupbeforemealsbecausethiscanmakethemfeelfulleasily.Itsalsoimportanttoeatslowly.Thefastertheyeat,themoretheywanttoeat.Second,theyshoulddomoreexercise,suchasrunningandswimming.Finally,theyshouldkeepitupandnevergiveup.第5版暑假作業(yè)(五)A篇1-5DACCB B篇1-5BDCAC C篇1.aretogether2.problems3.caringfor 4.howtoshare5.believe 第6版暑假作業(yè)(六)詞匯運(yùn)用
I.1.improve2.lifeless3.flood4.prefer5.atmosphere II.1-5CCADB III.1.pollution2.confident3.Steam4.state5.cause 6.climate7.sightseeing8.solve9.sunlight10.view
IV.1.educational2.doesntturn3.arrival4.tosupport5.speaking 6.thought7.deeply8.protection9.toread10.more V.1.information2.habit3.member4.host5.aim 6.exchange7.passport8.result9.square 10.environment VI.1.putout2.learntabout3.sincethen 4.intheformof5.takeaction 句型演練
I.1.MrWustartshisdaybytakingacoldshower.2.Wedidntgofishingbecauseofthewind.3.Shedoeseyeexercisessothatshecanprotecthereyes.4.Thestudentexchangegivesyouachancetolearnanewlanguage.5.Millieissuchaclevergirlthatsheisgoodatallsubjects.II.1.tookmany/alotofphotos2.torise3.assoonaspossible 4.strongenoughtostop5.keep/stop;fromgetting 6.keepsintouch7.alltheway8.aswellas 9.somany;that10.lookingforwardtoworking 為大家推薦的初二年級(jí)英語(yǔ)暑假作業(yè)答案,還滿意嗎?相信大家都會(huì)仔細(xì)閱讀,加油哦!
2016學(xué)年初二英語(yǔ)暑假作業(yè)練習(xí)題
八年級(jí)英語(yǔ)暑假作業(yè)答案精編
第四篇:初二暑假作業(yè)答案
初二暑假作業(yè)答案
暑假作業(yè)一 運(yùn)動(dòng)和聲
一.導(dǎo)學(xué)點(diǎn)撥
1、自然科學(xué)
2、哥白尼
3、伽利略
4、牛頓
5、校準(zhǔn)測(cè)量工具,改進(jìn)測(cè)量方法,選用精度高的測(cè)量工具,多次測(cè)量取平均值
6、參照物
7、速度,v
8、v=s/t,m/s
9、振動(dòng),停止
10、介質(zhì),真空中,介質(zhì)
11、障礙物,回聲
12、音調(diào),響度,音色
13、頻率,幅度,遠(yuǎn)近,品質(zhì)與特性
14、在聲源處減弱,在傳播過(guò)程中減弱,在人耳處減弱 15、20Hz-20000Hz,超聲波洗牙等 二.必做作業(yè)
1、A
2、A
3、B
4、B
5、C
6、A
7、C
8、產(chǎn)生
傳播
9、反射,空氣10、3.10 三.選作作業(yè):(1)0(2)不變(3)A(4)320
2、B
暑假作業(yè)二 多彩的光
一.導(dǎo)學(xué)點(diǎn)撥
1、同種均勻介質(zhì)
3×108m/s
2、略
3、鏡面反射,漫反射
4、正,虛,相等,相等,垂直
5、光的反射
6、斜射,改變
7、紅-綠-藍(lán)
8、透過(guò),反射,黑,白
9、凸透鏡,會(huì)聚,凹透鏡,發(fā)散
10、焦點(diǎn),焦距
11、凸透鏡,2倍焦距,倒立,縮小
12、倒立,放大
13、凹透鏡,凸透鏡,平面鏡
14、凹透鏡,凸透鏡
15、倒立,縮小,實(shí)像 二.必做作業(yè)
1、C
2、A
3、C
4、C
5、B
6、B
7、月亮
8、折射,反射,折射,直線傳播 9~
12、略
13、同一高度,光屏上的像,a,b,c
暑假作業(yè)三 質(zhì)量和密度
一.導(dǎo)學(xué)點(diǎn)撥
1、物質(zhì)的多少 m
2、基本屬性
形狀 狀態(tài) 所處空間位置
3、kg g、mg等4、1500 350
5、kg g
6、天平
7、水平
游碼平衡螺母 左
8、密度
9、kg/m3 g/cm3 10、7.9 11、5
0.8×103kg/m312、20×103kg/m3 13、3:2 3:2 二.必做作業(yè)
1、C
2、C
3、硫酸,酒精,水
4、(1)托盤(pán)天平,量筒,空燒杯,盛有鹽水的燒杯
3(2)A-D-C-B(3)ρ=(m1-m2)/V 5、179.4g,80,2.24×10,偏小
6、質(zhì)量 杠桿的平衡條件 391.60 中-后-前
37、空心,10cm,64g 三.選做作業(yè):用刻度尺測(cè)出OE的長(zhǎng)度L,表達(dá)式:ρ油=ρ物(L0-L)/L0
暑假作業(yè)四 熟悉而陌生的力
一.導(dǎo)學(xué)點(diǎn)撥
1、一個(gè)物體對(duì)另一個(gè)物體的作用
2、大小,方向,作用點(diǎn)
3、相互的,形狀,運(yùn)動(dòng)狀態(tài)
4、彈簧測(cè)力計(jì),彈性限度內(nèi)彈簧形變量與所受拉力成正比
5、零刻線,量程,N
6、G
7、質(zhì)量,G/m,地球上物體所受重力與質(zhì)量的比值
8、豎直向下
9、作用點(diǎn)
10、相反
11、壓力,粗糙 二.必做作業(yè)
1、C
2、D
3、C
4、B
5、C
6、相反,勻速直線,平衡力,1.6,1.6
7、(1)天平,彈簧測(cè)力計(jì)(2)物體所受重力的大小跟它的質(zhì)量成正比,其比值恒定,為9.8N/kg(3)武漢和上海,緯度差異,質(zhì)量
8、(1)同意,質(zhì)量增大為原來(lái)的幾倍重力也增大為原來(lái)的幾倍,(2)0-5;0.2; 2;(3)如圖所示;(4)正比;(5)不能.
暑假作業(yè)五 力與運(yùn)動(dòng)
一.導(dǎo)學(xué)點(diǎn)撥
1、外力、勻速直線運(yùn)動(dòng)、靜止、一切物體
2、實(shí)驗(yàn)事實(shí)、推理、實(shí)驗(yàn)
3、共同作用、合力、力的合成4、這兩個(gè)力的大小之和、方向
5、這兩個(gè)力的大小之差、較大的力
6、勻速直線運(yùn)動(dòng)、靜止?fàn)顟B(tài)、平衡、平衡、同一物體、同一直線、方向相反、大小相同 二.必做作業(yè)
1、形變、運(yùn)動(dòng)狀態(tài)的改變
2、相互的、慣性
3、大4、10、10
5、加速、不是
6、B
7、C
8、C
9、D
10、B
11、D
12、C
13、A
14、C
15、A
16、A
17、C
18、相等、旋轉(zhuǎn)一個(gè)角度、作用在同一物體上、避免卡片自身重力影響實(shí)驗(yàn)
暑假作業(yè)六 壓強(qiáng)
一、導(dǎo)學(xué)點(diǎn)撥
1、垂直作用于物體表面上的力、垂直于物體表面
2、壓力、受力面積
3、壓力與受力面積上的比、p=F/S、帕斯卡(帕,Pa)
4、減小受力面積、增大壓力、增大受力面積、減小壓力 二.必做作業(yè)
1、受力面積
2、壓強(qiáng)
3、減小、增大4、6x104、2.5x105、變大5、2:
3、4:9
6、D
7、B
8、C
9、D
10、C
11、受力物體的形變程度、手里物體不同、等于、選擇容易形變的相同受力物體
12、受力面積一定,壓力越大,壓力作用效果越明顯、甲丙、沒(méi)有控制壓力一定13、600、0.02m2、3.2 x104 14、2 x104 N、2t
暑假作業(yè)七 液體壓強(qiáng)、大氣壓強(qiáng)與流體壓強(qiáng)
一、導(dǎo)學(xué)點(diǎn)撥
1.(1)各個(gè)方向、密度、增大
(2)同一深度各個(gè)方向的壓強(qiáng)相等
球?qū)嶒?yàn)、托里拆利
3.1.013x105、760 4.小
2.馬德堡半二.必做作業(yè)
1.A 2.A 3.C 4.B 5.C 6.A 7.C 8.A 9.A 10.C 11.C 12.壓強(qiáng)、增大13.連通器、壓強(qiáng)減小 14.PA>PB>PC 15.低、大于 16、400
17、小、相平、深度、大、不變、相等 19.4.8N 2.5 x103
暑假作業(yè)八 浮力 一.導(dǎo)學(xué)點(diǎn)撥
1.豎直向上、浮力、豎直向上、氣、液
2.等于、重力、G排、m排g、****、液體密度、物體排開(kāi)液體體積、深度
3.>、>、=、>、=、=、<、< 4.液體密度、浮沉條件、漂浮、等于、小、大、小
5.自身重力 二.必做作業(yè)
1.D 2.B 3.A 4.B 5.D 6.B 7.A 8.D 9.A 10.C
11、增大物體排開(kāi)液體體積、2 12.>、= 13.變小、變大 14.10、上浮、6 15.1、下沉、密度 16.不變 17.<、<、=、<、<、< 18.80、下沉
319.(1)2400N(2)0.3m
暑假作業(yè)九 杠桿、滑輪
1、D
2、B
3、A
4、A、1:4
5、= 6、730N,0.6
7、C
8、B 9、150
10、略
11、C
12、省力,20 13、240,石頭前移或手后移
14、C
15、D
16、B
17、D 18、1000,500 暑假作業(yè)十 功和功率、機(jī)械效率
1、A
2、C
3、D
4、A
5、A
6、C
7、C
8、B
9、D
10、D
11、B
12、D
513、C
14、B
15、甲 2.1×10
16、C
17、C 18、10,1,0
19、(1)貨物的重力2000N;(2)叉車對(duì)貨物做功的功率400W.20、75%
暑假作業(yè)十一 機(jī)械能
1、動(dòng),勢(shì),彈性勢(shì),機(jī)械能
2、機(jī)械能,重力勢(shì)能
3、減小,減小
4、彈性勢(shì)能,動(dòng)能
5、D
6、A
7、D
8、B
9、A
10、B
11、C
12、B
13、A
14、A
15、D
16、D
17、(1)小球推動(dòng)木塊移動(dòng)的距離;(2)使小球從同一高度靜止滑下;
(3)結(jié)論是:質(zhì)量相同時(shí),速度越大,動(dòng)能越大;速度相同時(shí),質(zhì)量越大,動(dòng)能越大;
18、速度不同;根據(jù)機(jī)械能守恒,從近地點(diǎn)到遠(yuǎn)地點(diǎn)衛(wèi)星的勢(shì)能增大,動(dòng)能減小,所以速度減小
暑假作業(yè)12 小粒子與大宇宙
1、B
2、D
3、D
4、D
5、A
6、D
7、C
8、A
9、C
10、B
11、B
12、D
13、D
14、小于;空隙
15、擴(kuò)散;加快
16、分子在不停的做無(wú)規(guī)則運(yùn)動(dòng)
17、分子的運(yùn)動(dòng),光的反射
18、(1)1(2)0.7,下(3)1000(4)分子引力
19、(1)猜想:溫度越高,分子運(yùn)動(dòng)越快
(2)實(shí)驗(yàn):取相同體積的冷水和熱水,分別滴入相同體積的墨水,觀察哪杯液體擴(kuò)散更快。
暑假作業(yè)十三 溫度與溫度計(jì)、熔化與凝固
一、導(dǎo)學(xué)點(diǎn)撥
第一節(jié):1:固態(tài)液態(tài)氣態(tài),固體液體氣體,物態(tài)變化
2、(1)冷熱程度,t,攝氏度,℃(2)0℃,100℃(3)37℃,37攝氏度(4)﹣218℃(讀作:零下218攝氏度或者負(fù)218攝氏度),2500℃,6000℃
3、(1)熱脹冷縮(2)量程,分度值(3)浸沒(méi),容器底,容器壁,穩(wěn)定,相平
4、略
第二節(jié):
1、(1)液,固,熔化(2)熔化,凝固(3)C
2、(1)晶體:金屬、冰、食鹽、石墨;非晶體:石蠟、塑料、玻璃(2)不變,熔點(diǎn),升高,吸(3)有無(wú)固定熔點(diǎn)(4)略(5)凝固,熔化,溫度不變
二、必做作業(yè):
1、3,液泡沒(méi)浸沒(méi),視線未水平
2、熔化吸熱,凝固放熱
3、C
4、A
5、D 6、80.5,80.5,晶體,固態(tài)、液態(tài)、熔化,4,吸,凝固,固液共存
暑假作業(yè)十四 汽化與液化、升華與凝華、全球變暖與水資源危機(jī)
一、導(dǎo)學(xué)點(diǎn)撥
第三節(jié):
1、液態(tài)、氣態(tài)、氣態(tài)、液態(tài),略(參見(jiàn)課本)
2、(1)做功,熱傳遞(2)表面,內(nèi)部,吸熱,不變,費(fèi)電,100,78,越高
3、不是,蒸發(fā),任何,表面,溫度越高,質(zhì)量越大,表面空氣流速越快,吸熱,降低,略
4、略(參見(jiàn)課本)
第四節(jié):1(1)固態(tài),氣態(tài),氣態(tài),液態(tài),略(2)吸熱,放熱
2、升華,凝華,升華
3、熔化汽化升華,凝固液化,凝華
二、必做作業(yè)
1、汽化,液化、凝固,液化
2、汽化吸熱,水蒸氣液化放熱
3、C
4、ABC
5、C
6、溫度,99,不變;吸收,損失
7、升華,凝華,液化,熔化
暑假作業(yè)十五 物體的內(nèi)能
一、導(dǎo)學(xué)點(diǎn)撥
1、(1)分子,永不停息地做無(wú)規(guī)則運(yùn)動(dòng),動(dòng)能,引力,斥力,勢(shì)能(2)動(dòng)能,勢(shì)能,焦耳,J(3)溫度,不為0
2、做功,熱傳遞(1)增加,機(jī)械能,內(nèi)能,減小,內(nèi)能,機(jī)械能(2)低溫,略(參見(jiàn)課本)
3、(1)內(nèi)能,J(2)熱量,降低,減小,熱量,升高,增加,轉(zhuǎn)移,能量
二、必做作業(yè)
1、所有分子,無(wú)規(guī)則,勢(shì)能,無(wú)規(guī)則,引力,斥力,內(nèi)能
2、內(nèi)能,內(nèi)能
3、增大,熱傳遞
4、內(nèi)能,升高,熱傳遞
5、熱量,溫度,內(nèi)能
6、C
7、C
8、D
9、D
暑假作業(yè)十六 物質(zhì)的比熱容
一、導(dǎo)學(xué)點(diǎn)撥
31、沒(méi)題
2、(1)熱量,比熱容,c,J/(kg·℃),焦每千克攝氏度,特性,4.2×10 J/(kg·℃),略(仿寫(xiě)不可能不會(huì)吧?)(2)物質(zhì)種類、質(zhì)量、溫度變化量,比熱容,質(zhì)量,物體的初溫,物體的末溫,cm(t2-t1),cm(t1-t2)(3)水
3、冷卻發(fā)動(dòng)機(jī),取暖,保護(hù)秧苗防止凍傷,計(jì)算題略
二、必做作業(yè)
41~6:DBADCB 7、4.2×10,熱傳遞,小于
8、質(zhì)量,質(zhì)量相同的水和沒(méi)有,升高相同的7溫度,水吸收的熱量更多 9、3.7×10J 暑假作業(yè)十七 內(nèi)燃機(jī) 熱機(jī)效率
一、導(dǎo)學(xué)點(diǎn)撥
1.機(jī)械
內(nèi)燃 氣缸內(nèi)
吸氣 壓縮 做功
排氣
壓縮
做功 2.排氣
3.化學(xué) ;化學(xué);內(nèi)
4.噪音 ;廢氣
5.3.4×107
完全燃燒1Kg的木炭放出的熱量是3.4×107J
6.用來(lái)做有用功的 ;燃料完全燃燒 ;25%;1.65×107
二、必做作業(yè)
1.A; 2.D; 3.C; 4.A; 5.D; 6.C; 7.C; 8.B; 9.ACD;10.C;
11.D;
12.C;
13.C;
14.B
15.內(nèi); 機(jī)械; 內(nèi);16.壓縮; 做功;
17.內(nèi); 比熱容; ??;
18、(1)6.3 ×107 J
(2)2.04×108J
(3)31%
19、1.008×109 J 16 m3
暑假作業(yè)十八 電是什么
一.導(dǎo)學(xué)點(diǎn)撥
1、吸引輕小物體;摩擦起電;接觸帶電
2、(1)同種;異種 ;兩種(2)同種
3、絲綢 ;玻璃棒;毛皮;橡膠棒
4、排斥 ;吸引
5、同種電荷相互排斥
6、轉(zhuǎn)移
二、必做作業(yè)
1.C; 2.ABC; 3.B; 4.C 5.C 6.C 6.異; 摩擦起電;
7.同種; 摩擦起電; 電子;
8.正; 排斥;9.正; 負(fù); 負(fù);
10.吸附在塑料梳子上; 帶了電; 吸引輕小物體;11.負(fù); 正; 12.吸引輕小物體; 紅外線; 漫; 氣體流速大,壓強(qiáng)??;13.電; 力可以改變物體的運(yùn)動(dòng)狀態(tài); 大于;
14.正; 排斥;
15.同種電荷相互排斥
小球和豎直方向夾角與什么因素有關(guān)?
暑假作業(yè)十九 讓電燈發(fā)光
作業(yè)17內(nèi)燃機(jī) 熱機(jī)效率 答案 作業(yè)18 電是什么 作業(yè)19 讓電燈發(fā)光 一.導(dǎo)學(xué)點(diǎn)撥
1、電荷;定向;有電源 ;電路是通路;正;正極;負(fù)極 自由電子;相反
2、(1電能
其它形式
電
3、電源
開(kāi)關(guān)
用電器
導(dǎo)線;正
負(fù)
;沒(méi)有;
電源
沒(méi)有
電源 ;電源
通
二、必做作業(yè)
1.B; 2.C; 3.C; 4.A; 5.A;
6、B
7、B
8、C
9、C
10、石墨能導(dǎo)電,使電源短路
11、相反
12、D
13、燈絲斷了
電池沒(méi)電了 開(kāi)關(guān)開(kāi)路……
暑假作業(yè)二十 連接串聯(lián)電路與并聯(lián)電路
一.導(dǎo)學(xué)點(diǎn)撥
2、逐個(gè)順次;正;一條;負(fù) 串
3、并列 ;多;能;整個(gè);本條支路;互不
二.必做作業(yè)
1、正;定向;正;負(fù)
2、電源
通路
3、圈M(?)
4、L2
L3;串; L1
L2; 并
5、S2 ; S1 S3; L1
L2;S2 S3
6、D
7、A
8、B
9、略
10、A
11、并;并;串。
第五篇:2015初二語(yǔ)文暑假作業(yè)答案
2015初二語(yǔ)文暑假作業(yè)答案
3.2010年4月,國(guó)家出臺(tái)了國(guó)策十條,要努力改善百姓居住條件。杜甫的《茅屋為秋風(fēng)所破歌》中的“______________________,_______________________!”就表現(xiàn)了這種美好愿望。(2分)4.下列句子沒(méi)有語(yǔ)病的一項(xiàng)是()(2分)A.在當(dāng)前的國(guó)際競(jìng)爭(zhēng)中,我們所需要的,一是勇氣,二是智慧。
B.國(guó)家出臺(tái)嚴(yán)厲的“國(guó)八條”樓市調(diào) 控措施,是因?yàn)闃莾r(jià)問(wèn)題突出的原因。
C.我們要善于運(yùn)用材料、積累材料、整理材料,才能寫(xiě)好作文。
D.長(zhǎng)城連綿萬(wàn)里,雄偉壯觀,是我國(guó)勞動(dòng)人民智慧和汗水的結(jié)晶,是祖國(guó)的天然屏障。
5.下列標(biāo)點(diǎn)符號(hào)使用有錯(cuò)誤的一項(xiàng)是()(2分)A.自聯(lián)軍空襲利比亞以來(lái),已造成許多平民傷亡。人們不禁懷疑,是保護(hù)平民,還是另有所圖? B.我這個(gè)人到了陌生的地方就容易暈頭轉(zhuǎn)向,不知道哪是東,哪是西。
C.為了援助災(zāi)區(qū),人們連夜送去了棉衣、毛毯、藥品、食物、與大量建材。
D.雙匯集團(tuán)被曝收購(gòu)“瘦肉精”豬肉以來(lái),其宣傳的“十八道檢驗(yàn),十八個(gè)放心”遭到質(zhì)疑。
6.將下段文字后的幾個(gè)句子填入文段空缺處,正確的排序是____________(2分)這是怎樣親近、怎樣金碧輝煌的明月啊!______________________我陶醉在這金色的夢(mèng)中了,①她的金色的柔光滟滟地瀉在廣袤的大地上,遠(yuǎn)近的房屋、樹(shù)梢、山影、水痕,全都泛出了淺金色的光芒。
②她又是那么圓,圓得似乎要凸出來(lái)、蹦出來(lái)了。
③她低低的掛在澄凈如洗的空中,離我那么近,仿佛一伸手便可以摘下。
④我狂喜地望著這神奇的月色,仿佛走進(jìn)了金色的夢(mèng)境,一切都閃閃爍爍、蓬蓬勃勃的。
⑤一陣微風(fēng)吹過(guò),四野的金光便閃閃滾動(dòng)起 來(lái)!
如果你是魚(yú)兒,那快樂(lè)就是一汪清涼清涼的水;如果你是小草,那快樂(lè)就是一束暖暖香香的陽(yáng)光;如果你是_______________________,那快樂(lè)就是_______________________。
8.下列對(duì)課文內(nèi)容理解不正確的一項(xiàng)是()(2分)A.《敬畏自然》從總體上理性地思考人與自然的關(guān)系,提倡一種新的理念:敬畏自然,就是敬畏我們自己。B.散文《云南的歌會(huì)》描寫(xiě)了三種不同場(chǎng)合聽(tīng)到的民歌演唱,演唱方式和內(nèi)容都不相同,由衷地表達(dá)了作者的贊賞之情。
C.《小石潭記》中,柳宗元雖然在對(duì)小石潭自然風(fēng)景的描繪中,沒(méi)有融會(huì)自己的身世遭遇、思想感情,但是,在文章的議論部分卻寄喻自己的不幸遭遇,傾注怨憤抑郁的心情。
D.《岳陽(yáng)樓記》超越了單純寫(xiě)山水樓觀的狹小境界,將自然界的晦明變化、風(fēng)雨陰晴和“遷客騷人”的“覽物之情”結(jié)合起來(lái)寫(xiě),從而將全文的重心放到了政治理想方面,擴(kuò)展了文章的境界。
以上就是為大家提供的初二語(yǔ)文暑假作業(yè)答案,大家仔細(xì)閱讀了嗎?加油哦!
暑期作業(yè)語(yǔ)文八年級(jí)下冊(cè)(閱讀)
初二年級(jí)下冊(cè)語(yǔ)文暑期作業(yè)練習(xí)