启航新课堂七年级上.docx
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启航新课堂七年级上
三一文库(XX)
〔启航新课堂七年级上〕
*篇一:
启航新课堂七年级数学上册3单元t-ment
启航新课堂单元测试
[请支持正版]
第三章字母表示数
(总分:
150分;时间:
100分)
姓名学号成绩
一、选择题(每小题3分,共30分)
1.用代数式表示“2m与5的差”为()
A.2m?
5B.5?
2mC.2(m?
5)D.2(5?
m)2
.某商场2006年的销售利润为a,预计以后每年比上一年增长b%,那么2008年该商场的销售利润将是()
A.a?
1?
b?
B.a?
1?
b%?
C.a?
a?
?
b%?
222D.a?
ab2
3.当x?
2时,代数式2x?
3的值为()
A.1B.?
1C.5D.3
4.下列各组中的两项不属于同类项的是()
A.3m2n3和?
m2n3
xy和25xy5
1C.-1和4B.
D.a2和x3
A.3a?
2b?
5abB.5y?
3y?
2
C.7a?
a?
7a2D.3x2y?
2yx2?
x2y
6.化简?
0?
(x?
3y)?
的结果是()
A.x?
3yB.?
x?
3yC.?
x?
3yD.x?
3y
7.一个长方形的周长为30,若长方形的一边长为x,则此长方形的面积是()
A.x(15?
x)B.x(30?
x)C.x(30?
2x)D.x(15?
x)
8.若a?
b,b?
2c,则a?
b?
2c等于()
A.0B.3C.3aD.?
3a
9.为了做一个试管架,在长为acm(a?
6cm)的木板上钻3个小孔(如图),每个小孔的直径为2cm,则x等于()a?
3a?
3A.cmB.cm44
a?
6a?
6C.cmD.cm44第9题图
10.若代数式(m?
2)x2?
5y2?
3的值与字母x的取值无关,则m的值是()
A.2B.-2C.-3D.0
二、填空题(每小题3分,共30分)
11.x平方的3倍与?
5的差,用代数式表示为;当x?
?
1时,代数
式的值为.
12.正方体的棱长为a,则它的表面积为;若a?
2cm,则表面积为.
13.某班a名同学参加植树活动,其中男生b名(b?
a).若只由男生完成,每人
需植树15棵;若只由女生完成,则每人需植树棵.
1114.一根钢筋长a米,第一次用去了全长的,第二次用去了余下的,则剩余32
部分的长度为米.(结果要化简)
15.代数式5m?
2的实际意义可表示
为.
1?
x2
16.当x?
?
1时,代数式的值是2(1?
x).
17.合并同类项:
①15x?
4x?
10x?
;②
?
p2?
p2?
p2?
.
18.?
6x?
7y?
3的相反数是.
19.代数式a2?
a?
3的值为7,则代数式2a2?
2a?
3的值为.
20.用黑白两种颜色正方形的纸片按黑色纸片数逐渐加l的规律拼成一列图案:
(1)第4个图案中有白色纸片张;
(2)第n个图案中有白色纸片张.
三、解答题(共40分):
21.化简(每小题4分,共16分):
2
(1)?
9y?
6x2?
3(y?
x2);
(2)5(a2b?
3ab2)?
2(a2b?
7ab2);3
22222?
?
7x?
(4x?
3)?
2x5a?
a?
(5a?
2a)?
2(a?
3a)?
(3)3x2?
?
;(4)?
?
?
?
.
3522.(6分)先化简,再求值:
m?
(m?
1)?
3(4?
m),其中m?
?
3.22
23.(8分)
(1)根据下列条件,分别求代数式4(x?
y)?
5(x?
y)?
11(x?
y)的值:
①x?
3,y?
1;②x?
0,y?
?
2;③x?
?
0.5,y?
?
2.5;
(2)观察上述计算结果,请你给出一组x,y的值,使得上述代数式的值与
(1)中①的计算结果相同.
24.(10分)初一年级学生在5名教师的带领下去公园秋游,公园的门票为每人
30元.现有两种优惠方案,甲方案:
带队教师免费,学生按8折收费;乙方案:
师生都7.5折收费.
(1)若有m名学生,用代数式表示两种优惠方案各需多少元?
(2)当m?
70时,采用哪种方案优惠?
(3)当m?
100时,采用哪种方案优惠?
*篇二:
启航新课堂七年级下册英语答案
启航新课堂七年级下册英语答案单项选择BCABDBBBAACDABC完形填空AADBCBADCB阅读理解CDABATFFFF补全对话ThisisPeter.Areyoufreethistomorrow?
AreyoufreethisSunday?
Yes,IdlovetoIllcallhere词汇speakcarryflyingcookafraid汉译英ThiscallaboutwouldhaveapicnicWhatupgofishingSectionAⅠ1.unday2.orget3.free4.kite5.ringⅡ1.togo2.shopping3.toke4.Are5.usⅢ1.Pleasetellhimaboutthepicnic2.Dontdorgettobringyourguitar3.Wouldyoutogofishing4.Whatdoyouthingofthisgreenskirt5.AreyoufreethisSundaySectionBⅠ1.CDEABⅡ1.DDBAAⅢFGCEBSectionCⅠ1.tohaveapicnicwith2.veryhappy3.goingfishing4.afraidhaveno5.asktocallbackⅡWouldliketovisit2.Whatwouldyou3.donthave4.Doeshave5.wanttoⅢJBACEIDGHFSectionDⅠ1.calls2.shopping3.songs4.you5.having6.tellⅡ1.Would2.can3.can4.May5.WouldⅢ1.Whataboutcook2.athome3.like4.Whoare5.cantseeany
*篇三:
启航新课堂七年级下册英语试题
启航新课堂七年级下册英语试题
一)单项选择
1.Let’s____afterschool.
A.toplaybasketballB.playbasketballC.playa
2.____seethegiraffes.
A.LetB.LetweC.Let’s
3.---_____doyoulikeanimals?
---_____theyarecute.
A.Why,BecauseB.Why,SoC.What,Because
4.Doyouwant_____?
A.eatriceB.toeatriceC.toeatrices
5.A:
Let’sseethemonkeysfirst.
B:
_________?
A:
Becausethey’reinteresting.
A.WhyB.WhatC.Where
6._________thesetigers_______from?
A.Where,areB.Where,comeC.Whereare,/
7.Ilikekoalasbecausetheyare_________friendly.
A.akindofB.kindofC.kindsof
8.—Whereishe___________?
—SouthAfrica.
A.forB.fromC.like
9.--_______he________breakfastathome?
--Yes.
A.Dose,haveB.Does,haveC.Does,has
10._____pandasfromChina?
A.AreB.IsC.Do
11.Theelephantsare______greatdangerinAfrica.
A.areB.isC.doesD.do
12.Ilike_______,butthisafternoonIdon’tlike_______.
A.swimming;swimmingB.toswim;toswim
C.swimming;toswimD.toswim;swimming
13.Thetreesaregreen.Don’t______
A.cutdownthemB.cutthemup
C.cutthemdowmD.cutupthem
14.Oneoftheboys________pet.Thepetisreallycute.
A.haveB.hasC.keepD.save
(二)连词成句。
1.lions,the,let,first,see,us
__________________________________________________________.
2.pandas,why,want,see,to,do,the,you
________________________________________________________?
3.they,are,ugly,because
________________________________________________________.
4.SouthAfrica,lions,from,are,those
_________________________________________________________.
(三)按要求完成句子
1.Ilikemonkeysbecausetheyarecute.(就划线部分提问)____________youlikemonkeys?
2.usletpandassee.(连词成句)_____________________________________________
3.doyoutigerswhylike?
(连词成句)___________________________________
4.ThekoalacomesfromAustralia.(变否定句)
Thekoala________________fromAustralia.
5.Helikespandasverymuch.(变一般疑问句)
_______he________pandasverymuch?
6.Thebeautifulgirlwantstoseegiraffes.(对划线部分提问)
________________doestheshygirlwanttosee?
7.PandasarefromChina.(同义句转换)
Pandas_________________China.
(四)阅读理解
A
Thereisanelephantandamonkey.They’refriends,butonedaytheywanttoknowwhoisstronger(更壮).Oneofthemsays,“Whocangetapplesoverthere,whoisstronger.”
There’sariveroverthere.Monkeysays,“Ican’tswim.”Elephantsays,“Icanswim.Pleasesitonmyback.”Theygoacrosstheriver.Theappletreesareveryhigh.Theelephantcan’treach(够着)theapples.Themonkeyclimbs(爬)upthetreeandgetsmanyapples.
Nowtheyknowtheyshouldhelpeachother.
根据短文内容选择最佳答案。
()1.Theelephantandthemonkeywanttoknow_____.
A.whoissmarterB.whoishigherC.whocanswimD.whoisstronger
()2.______can’tswim.
A.TheelephantB.ThemonkeyC.ThebiganimalsD.Thesmallanimals
()3.______can’treachtheapples.
A.TheelephantB.ThemonkeyC.ThehighanimalsD.Theshortanimals
()4.Atlastthemonkeygoesacrosstheriverwiththehelpof______.
A.theelephantB.themonkeyC.ananimalD.aboat
()5.Fromthestoryweshould_______.
A.learnfromtheelephantB.learnfromthemonkey
C.AandBD.helpeachother
B
HandancomesfromChina,sheisacleverandbeautifulgirl.Shestudiesinamiddleschool.Shehasfourpenpals.Theyarefromdifferentcountriesandlikedifferentanimals.LindaisfromAmerica.Herfavoriteanimalisthepenguin.Thepenguinlikesiceverymuch.LilycomesfromAustralia.Thekoalaisherfavoriteanimal.Thekoalalikestoeatleaves.Anditsleepsduringtheday,butitgetsupatnight.BobisfromIndia.Hisfavoriteanimalistheelephant.Grassistheelephant’sfavoritefood.TomisaCanadianboy.Helikesthetigerbest.Thetigerlikestoeatmeat.WhatisHandan’sfavoriteanimal?
Itisthepanda.Bambooispanda’sfavorite.
Name
Country
Favoriteanimal
Whatdotheanimalslike?
Handan
1._________
Panda
2.__________
3.________
America
4.__________
ice
5.________
Australia
koala
6.___________
Tom
Canada
7.___________
8.___________
9._________
India
10.__________
grass
C
Peoplecomebacktotheirhomestospendthedaywiththeirparentsortheirchildren.OnChristmasDaybellsringeverywhere.TheringingbellstellpeopleChristmasiscoming.Peoplesinganddancedayandnight.Theyhaveagoodtime.
MostfamiliesbuyaChristmastreefortheirchildren.Andtherearesomepresentshanging(挂)fromthetreehereandthere.Peoplealsoputpresentsinchildren’sstockings.Inmanyplaces,FatherChristmashimselfbringspresentstothem.Heisakindmanandinredclothes.Thereisabigbagonhisback.Inittherearealotofpresents.
Christmasisalsoadaywhenpeopleenjoyallkindsoffood.Butsomepoorpeoplehavenohomesandhavenofoodtoeat.Theydieofcoldandhunger(饥饿)onChristmasDay.
根据短文内容判断正(T)误(F)。
()1.ChrismasisaveryimportantdayinEnglish-speakingcountriesinayear.
()2.AllpeoplehaveagoodtimeonChristmasDay.
()3.FatherChristmaswearsredclothes.
()4.TherearealotofChristmastreesinFatherChristmas’bag.
()5.SomepoorpeopledieonChristmasDaybecausetheyhavenohomesandnofoodtoeat.
(五)从方框中选择最佳选项完成对话.
A.ChinaB.Becausetheyarecute.
C.OK.Let’sgo.D.Theyarenexttothegiraffes.
《启航新课堂七年级上》