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七下英語(yǔ)配套練習(xí)冊(cè)答案(編輯修改稿)

2025-10-17 20:54 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 classroom outside五.CAFDESection B 一.(A) to on byat(B) 二.1~ 6~三. have to ’t run play fun ’t have to 四. you usually help your mom make dinner? ’t talk loudly in the classrooms! have to go to bed by 10 o’ have to go to the Children’s Palase to learn the paino? you meet friends at night? 五.1~ 6~10CBDCA 六.Wele to School Library ’t take your food into the libray or eat in 。 weeks you lost them,you have to play for themeither pay money for them or buy the some 二. ’s 三.1~5 BBCCC 6~10 CDDBA 11~ 四.’t any have does do does ’s doing doing do ’s like a good time are you doing you have a pen pal does she from there any famous animals ’s the weather in Australia BACCD 七.BCBAC is 12 years old it can make him get up early to take exercise the table 期末綜合練習(xí)(一)1.height 2. 3.BCCCD ACBAD CBBDC 4. any ’t play ’t have ’t arrive ’t do would does like like ’t take5.GCFED6.DBADC BCBCA7.DBCBA 8. is a he thinks they are interesting News thinks the coolest thing is the sungiasses doesn’t like game shows or (二)一. 二. 三.BDADC BDACC CCBBD四. have ’t went ’t or any didn’t does were does was me五. shopping to me joining late六. does he e from does he look like does he like you want to meet him is the weather in Toronto七.BBABC DABBA八.DCBDA BCDAB lived in a big city it was a quiet and clean plase ,it wasn’t knows everybody ,People often e and see him and he often go and see ,he did第三篇:青島版數(shù)學(xué)配套練習(xí)冊(cè)七下答案青島版數(shù)學(xué)練習(xí)冊(cè)七年級(jí)下冊(cè)參考答案 1.(1)∠A,∠C。(2)∠ABC,∠ABD,∠DBC,∠ADB,∠BDC。(3)3個(gè),∠ABD,∠ABC,∠.(1)∠AEB,∠DAE,∠BEC,∠ADB;(2)∠C,∠。6個(gè)角。 1.(1)42176。(2)176。.提示:設(shè)∠COE=x176。,則x8=1302x,x=.(1)45176。;(2)不變;提示:90+2x2x=45。(3):902y2+y=1.(1)42176。20′24″;(2).(1)61176。38′10″;(2).(1)93176。12′。(2)47176。31′48″。(3)12176。9′36″。(4)33176。7′12″.6.(1)112176。27′;(2)51176。55′;(3)125176。37′30″.176。,6176。.8.(1)15176。(2)176。.176。.176。17′45″.176。.6.(1)相等;(2)180176。.176。. 1.∠3,∠176。..∠3=25176。30′,∠2=45176。.6.∠2=63176。30′,∠3=53176。.7.(1)2對(duì);(2)6對(duì);(3) 176。.176。.176。.176。.176。,30176。.第八章綜合練習(xí)176。.176。16′30″.176。.4.(1)54176。34′,125176。26′。(2)α90176。.176。.176。.12.∠AOC+∠BOC=2(∠DOC+∠COE)=290176。=180176。,A,O,∠BOE=x176。,∠EOC=2x176。,∠AOB=1803x,∠DOB=(72x)2=1803x,解得x=∠EOC=72176。.14.∠BOC+∠COD+∠AOD=270176。,∠EOF=170176。,∠AOE+∠BOF=190176。90176。=100176。.∠COF+∠DOE=100176。.又∠EOF=170176。,∠COD=170176。100176。=70176。.檢測(cè)站176。.176。.3.∠AOB,∠BOC.∠AOB,∠.∠BOD,∠FOE,∠BOC;∠176。.176。. 1.∠,AB,BC;AB,BC,.∠CAD,∠BAC,∠:∠EAD與∠B;∠EAC與∠B;內(nèi)錯(cuò)角:∠DAC與∠C;∠EAC與∠:∠DAB與∠B;∠BAC與∠ , 176。,兩直線平行,同位角相等,65176。,176。.176。.6.∠B,∠EFC,∠176。.,BD,內(nèi)錯(cuò)角相等,.(1)EN,BD;(2)AB,.∠5=∠2=105176。,∠5+∠1=180176。.∥∥MN,DE∥:由AD∥BC,得∠A+∠B=180176。,∠C+∠B=180176。,AB∥.(1)由∠3=∠B,知FD∥AB,知∠4=∠A;(2)由ED∥AC,知∠1=∠C,∠BED=∠,∠B=∠C,知AB∥CD,故∠A=∠.∠1=∠GMC=90176。∠.(1)∠MDF=∠MBE,BE∥DF;(2)不是;∠B內(nèi)畫(huà)射線BF∥AE,則BF∥CD.∠ABF=120176。,∠FBC=30176。,∠C=180176。30176。=150176。.第九章綜合練習(xí)176。.∥BE,BD∥CE,AD∥176。.提示:過(guò)點(diǎn)M畫(huà)MN⊥AB,MN∥EG,∠HMN=∠E,∠HMN=90176。∠176。.8.∠1=115176。.176。.10.∠3=80176。,∠4=100176。.∥CD,所以∠AEF=∠2,∠AEG=∠3,因?yàn)椤螦EG=∠1+∠2,所以∠3=∠1+∠176。.提示:過(guò)點(diǎn)A畫(huà)直線c∥ ,同旁?xún)?nèi),176。.∥CD,AD∥∥∠ =7,b=,共有y人外出參觀,35x+15=y, 45(x1)==6, y=225..+85,53y+=.(1)x=12,y=52。(2)s=3,t=3。(3)m=2,n==1,y=:按丙的方法,35x=3,25y=4,得x=5,y=.(1)x=1,y=8。(2)x=5,y=+y=a,xy=b,解得a=2,b=1,又解得x=12,y== +y=6,5x+4y=.(1)x=1,y=1,z=1。(2)x=1,y=2,z=,用a表示解,得x=a,y=a+1,z=a1,代入方程x+2y+3z=6,得a=,將x,=1911z,y=+y+2z=1911z+211z+2z=,①,②..(1)x=2,y=1,z=1。(2)x=1,y=2,z==1,b=1,c= +3=y, 8x5=,,:設(shè)小長(zhǎng)方形寬x,長(zhǎng)y,則5x=3y,y+2x=2y+2,得x=6,y= =+112y, =(+1),,.(1)x+y=90,46%x+70%y=9064%,x=,y=.(2)46%x+70%y=64%(x+y),x∶y=1∶3.*第3課時(shí) +y+z=21, x+yz=5, x(zy)=,8,3,8,,5,(113,0).=1,y==.*.(1)x=1,z=2;(2)x=6,y=24;(3)x=3,y=2;*(4)x=2,y=3,z=,,=,70千米,,.(1)x=2,y=2,也是剩下一個(gè)方程的解.(2)==2,b=,=5.*=1,y=2,z=, .(1)m9。(2)3.(1)(ab)5。(2)(2x3y)3n+.(1)28x3y3。(2)anbn;(3)1.(1)x10。(2).(1)19x2y4。(2)(3)x12。(4).(1)x6n+2。(2)(a+b)7。(3):24<33,(24)25<(33).(1)m5n2。(2).(1)14x5y4z2。(2)(ab).(1)3x2y+2xy252xy。(2)x4+4x2+2x4。(3)12b3b2+=++.(1)6m2+19m15。(2)12x3+14x24x。(3)3y223y+++32,:==++5a2+.(1)m3+2m21。(2)2a35a2b+8ab23b3。(3)2x3x27x++x5,= .(1)a。(2).(1)yx。(2)(x+2y).(1)64。(2).(1)3 129。(2)≠0,m=.(1)200。(2)10 099。(3),102,103,<b<d<≠.(1)10。(2)x5。(3)11 000 000;(4) 002 .(1)102。(2)103。(3)=,.(a+b)+2a2b++.(1)x9;(2)(a+b)4;(3)a2b2+6ab+23a;(4)6n+2;(5)2a3+8ab214a2b;(6)3x223x+108;(7)6x213xy;(8).(1)x,1;(2)5x1,=.(1)x=4;(2)n=2,m=4;(3)M=x26x++(n+5)(n3)(n+2)=6(n+1).檢測(cè)站1.(x+y)+.(1)36x2114x+90;(2)91x2277x+ +.(1)c29a2b2。(2)9y24x4。(3)a4b4。(4).(1)(300+3)(3003)=90 0009=89 991。(2).(2n1)(2n+1)=(2n)3232=+4ab+=.(1)9m232n+116。(2)x42x2+1。(3)a2+2ab+b2。(4)916s2+st+.(a+b)2=4ab+(ab)+2ab+b2=9,a22ab+b2==14(949)=+b2=92ab=+b2+c2++z2+.(1)2a2b2b4。(2)2y2+2x+5。(3)(1003)(1001)(100+1)(100+3)=(1049)(1041)=108105+9=99 900 (a+1). +.(1)xy(xy)。(2)4ab(bc+4)。(3)2xy(1+2x4x2)。(4)(3a+b)(a+3b)。(5)2x(xy)2(12x). (2ax)=512510=510(251)=24 1.(x+2y)(x2y).=.(1)(6+x)(6x)。(2)(12y+1)2。(3)(mn)2。(4)(3+14a)(314a).6.(1)8 056。(2)90 .(1)(1+a+b)(1ab)。(2)(ab+2)端=[(ab)2+(a+b)2+(ab)2(a+b)2][(ab)2+(a+b)2(ab)2+(a+b)2]=4(ab)2(a+b),(x+1)(x1).3.(a1)(x+y)(xy)..(1)m(m2+1)(m+1)(m1).(2)2x3(3y+1)(3y1).(3)(x+2)2(x2)2.(4)(x+1)=123223433454?9101110= 0122(2 01121)+(2 01321)=2 0122(2 011+1)(2 0111)+(2 013+1)(2 0131)=2 01224 024=1 ++2m2n++.(xy+2z)(xy2z)..(1)4x2+4xy+y225z2。(2)280y2+1 295。(3).(1)2a3x2(2+a)(2a)。(2)(xy)(a+2y)(a2y)。(3)(ab)2(a+b)2。(4)(x2+2x+
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