英语 暑假综合练习9-【快乐假期•暑假作业】七年级合订

快乐假朗 15.2解析：(y,3)★(1-y,y-1)=户y气 3 y -5,.3+y=-5(1-y),解得y=2. 16.(1)2(2)-3 17.解：(1)原式=1+3-4=0.(2)原式=ab(a-b)(a +b) 3x+4y=5① 18.解：(1)原方程组整理得 3×①+ 10x-3y=-2②， 4X②得49x=-1,解得x=,代人①，得y=, x= 7 原方程组的解为 (2)3x-10_2x-12 8 x-3x2-9 y=7 3,方程去分母得(3x一10)(x十3)一(2x一12)= 3(x2-9),整理得-3x-18=一27，解得x=3,经检 验，x=3为原方程的增根，∴原分式方程无解. 1”解：服式-气·+》2+ r+2 (x+2)(x-2) =x+2+x-2=2.“ x一2≠0， x2-4≠0， .x≠2，x≠一2，x≠0，.取x=1,得原 x+2≠0， x≠0， 式=2；取x=-1,得原式=-2. 20.解：(1)15÷30%=50（人），50-15-8-17=10 (幅)，图略.(2)10÷50×100%=20%，20%× 360°=72.(3)500×品=80（幅），全年级剪纸 作品约有80幅. 21.解：(1)平行.理由：，∠2=∠BME,∠1=∠2， ∠1=∠BME,AE∥FD.(2)AE∥FD, ∠A=∠BFD.又∠A=∠D,∴∠BFD=∠D, AB∥CD,.∠C=∠B=30. 22.解：(1)设租了x辆大巴车，由题意得45x十30=50 (x-1)+50-10,解得x=8,45×8+30=390(人)， .七年级共有390名学生，共租了8辆大巴车. (2)设大巴车速度为a千米/时，张老师追上大巴车 的地点到根博园的路程为6千米.由题意得120 1201+1 .6a-2+4,解得a=60,1.6X60=96(千米/时)， ÷当张老师追上大巴车时，129。+日-120解 96 2 ·88· 得b=40,∴张老师追上大巴车的地点到根博园的 路程为40千米. 23.解：(1)x-2y-28-y(2)由题意得，HE= AE-AH=5-(x-2)=7-x,EB=QI=x-5,NM =NL-ML=NL-GK=y-5,S=JH.HE=2(7 -x)=14-2x,S2=GK·GM=3(8-y)=24-3y, S=FQ·QI+NM·NC=(5-2)(x-5)+(y-5) (x-3)=xy-2x-3y.S+S2=S-4,.(14- 2x)+(24-3y)=(xy-2x-3y)-4,整理得xy= 42,.S长方形AD=AB·AD=xy=42.(3)空白部 分独有的周长为DN+DG+KA十AH+EB+IB= 3+(y-5)+(y-3)+(x-2)+(x-5)+2=2(x+ y)-10,阴影部分独有的周长为NC+CI+HE+ GK=(x-3)+(y-2)+(7-x)+(8-y)=10.. 空白部分的周长比阴影部分的周长大6，，.2(x十y) -10=10+6,整理得x+y=13.xy=42,.∴.(y一 x)2=(x+y)2-4xy=132-4×42=1, 「x+y=13, x=7, y-1,解得 y=6. 暑假综合练习八 1.him 2.us 3.yours 4.her 5.his 6.mine 7.himself 8.Mine 9.hers 10.Its 11.Their 12.my 13.ours 14.Whose 15.me 16.B 17.B 18.B19.B20.D21.C22.A23.B24.C 25.C26.B27.C28.A29.D30.C 暑假综合练习九 1.women 2.children 3.men 4.wives 5.watches 6.cities 7.pencil boxes 8.knives 9.glasses 10.stories11.D12.C13.B14.A15.A16.B 17.A18.C19.D20.D21.C22.A23.D 24.C25.C 暑假综合练习十 1.A2.B3.B4.C5.A6.B7.B8.C9.C 10.C11.B12.D13.C14.A15.D 暑假综合练习十一 1.D2.C3.A4.B5.C6.D7.B8.C9.D 10.A11.C12.B13.B14.A15.D16.D 17.D 暑假综合练习十二 1.a;The 2.an;the 3.an;a 4.the 5./;/6./;the快乐假朗 月 暑假综合练习九 I.用括号内名词的复数形式填空。 1.How many (woman)can you see in the picture? 2.They have a big family.They have five (child). 3.These young(man)all came from America. 4.Mr Wang and Mr Li went to Shanghai last weekend.They bought a lot of things for their (wife). 5.These (watch)are beautiful.I like them very much. 6.-Which of the (city)is not a capital city? -Sydney. 7.Look at these (pencil box).They are cheap but very nice. 8.Tell them not to play with (knife).It's dangerous. 9.-Do you know the doctor with (glass)? -No,I don't know him. 10.The old man often told us funny (story)when we were young. Ⅱ.完形填空。 Welcome to Center Street.Center Street is a great place to enjoy 11 There are 12 stores and shops on it.It is a very 13 street.If you want to 14 you can go to the computer room.It is 15 from the big supermarket.There is also a new park 16 the supermarket.It is 17 and quiet.You can 18 your lunch in it.If you want to see 19 you can go to the movie house.It is 20 the supermarket and the park. ()11.A.you B.your C.yours D.yourself ( )12.A.a lot B.lot of C.a lot of D.a lots of ( )13.A.quiet B.busy C.small D.dirty ( )14.A.play games B.have lunch C.buy clothes D.play football ( )15.A.across B.next C.between D.with ( )16.A.to B.near C.on D.neighborhood ( )17.A.clean B.busy C.big D.dirty ( )18.A.buy B.make C.enjoy D.take ( )19.A.games B.books C.doctors D.movies )20.A.in B.down C.through D.between ·42· 暑假作业·七年级 Ⅲ.阅读理解。 Tom has much money.His mother is very good to him.He wants to give her a nice present (for her birthday.His friend says that there is a kind of bird in a shop.It can speak English,Chinese,Japanese and Russian and can sing ten songs,too.He goes to the shop and buys it.It is $50,000. After his mother's birthday,he phones his mother."Dear Mum,what do you think of the bird?”he asks. “Oh,it's delicious！”his mother answers. ( )21.Tom gives his mother for her birthday. A.a cat B.a dog C.a bird D.a hat ()22.The bird can for his mother. A.speak and sing B.only sing C.only speak D.dance and sing ( )23.How many songs can the bird sing? A.Two. B.Five. C.Seven. D.Ten. )24.His mother says that the bird is A.well B.expensive C.delicious D.cheap )25.Tom is very when he hears(听见)what his mother says. A.happy B.well C.sad D.hungry 知识博览 感恩母亲节 母亲节源于希腊，古希腊人在这一天向希腊神话中的众神之母赫拉致敬。 在17世纪中叶，母亲节流传到英国，英国人把封斋期的第四个星期天作为母亲节。在这 一天里，出门在外的年轻人将回到家中，给他们的母亲选上一些小礼物。 现代意义上的母亲节起源于美国，由Amanm Jarvis发起，她终身未婚，一直陪伴在她母亲 身边。l905年，在母亲去世时，Amanm悲痛欲绝。两年后，Amanm和她的朋友开始写信给有 影响的部长、商人、议员来寻求支持，以便让母亲节成为一个法定的节日。Amanm认为子女经 常忽视了对母亲的感情，她希望母亲节能够让人们多想一想母亲为家庭所付出的一切。第一 个母亲节于1908年5月10日在西弗吉尼亚州和宾夕法尼亚州举行，在这天，康乃馨被选中为 献给母亲的花，并从此流传下来。1913年，美国国会通过了一份议案，将每年5月的第二个星 期天作为法定的母亲节。母亲节从此流传开来！ ·43·