【正文】 劉老師花的錢多，多25元。4000（400015 = 3985（元）答：爸爸這個(gè)月的實(shí)際收入為3985元。 2 = 7000（元）答：當(dāng)時(shí)存了7000元。20160六80％7/10五200168 1425（二）判一判。50000 + 50000 5 % = 57850（元）答：今年李奶奶一共可以拿到57850元錢。（30160 = 1440（人）答：參加保險(xiǎn)的學(xué)生有1440人。..（1）22x23，21；（2）2y2+19y,=、三等門票33張，或購二等門票7張、：分三種情況分別列二元一次方程組，其中購一等門票、176。.,3,.（1）3,，2n+ ,，診所(6,9),商店（7,3）,學(xué)校（1,1）..(1)(C,4),(A,4),(0,3),(0,1),(A,0),(C,0),(D,1),(D,3)?！螩=140176。144176。.8.（1）105176?！鰽DC,△BDC。(3)12x(2a1)=(x+1)(2x3)=12時(shí)，原式==(312+1)(36+1)(33+1)(331)=28(312+1)(36+1)(331).=12(ab)2=1.(1)√。(3).(1)2a3x2(2+a)(2a)。=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)=12(3)2xy(1+2x4x2)。(4).(1)(300+3)(3003)=90 0009=89 991。(2)10 099。(2)12x3+14x24x。(2)(3)x12。(3)m=2,n==1,y=：按丙的方法，35x=3,25y=4,得x=5,y=.(1)x=1,y=8。.8.∠1=115176?！螰BC=30176。.176。=70176。,∠EOF=170176。.176。,30176。30′,∠2=45176。(2)176。9′36″。；（2）不變；提示:90+2x2x=45。第三篇：人教版七年級(jí)下冊(cè)英語配套練習(xí)冊(cè)答案單詞：(七下冊(cè)u(píng)1)country, Canada, Japan, Australia, French, language, pal, live, United, Singapore 選擇：ABDBBCAACD 句型：is from, Where from, What language(s), Where does, Does speak 翻譯：Where is from is from, does live lives, language speak speaks, Chinese speaks Japanese 對(duì)話：EFBDA Section B 單詞：write,favorite,difficult,world, wants, 介詞： for, in ,to, from in, in, with, at, from in, to on 選擇：CCAAC BCABC CBBDB翻譯：speak speaks French, think interesting, a little,writes to his parents about, playing sports onu2A答案,restaurant,supermarket,bridge,post office, Avenue, neighborhood 2:CBCBCCDCCC 3Where are ,is a long bridge, Yes, there is, Are there any, There are two small restaurants in the 1:small, quiet,beginning, through,dirty,hungry,way,garden,visit,tour,supermarket,airport,district,place,tour 2:BABBABCBAC 3:Go down/turn left,have a good trip,know/arriving,with/next to,tell/the way 4:is,post office,between,across from,down/along,on,school U3答案：giraffe,cute/clever,tigers,kind, Lions,elephant,Dolphins,pandas,animals,map 句型：Why/do,Why/does/like,Where /are /from,kind of,Does like SectionB: Animals,leaves,other,quiet,lazy,years,play,relaxes,grass,Africa 翻譯句子：Watches TV/at night, other /animals,are/lazy,play with/during,eats leaves 句型：What do to see,Does sleep,Why do you,doesn’t relax,don’t beU4答案： 單詞：doctor,hospital,waiter,policewoman,uniforms,money,thieves,dangerous,reporter,policewomen 三:What do you do?,What does,Whatdo,What does 四:What,do,Where,station,like,late,to be 五:four,policeman,station,dangerous,clerk,money,be,hospital,night,restaurant,busy,late,to SectionB: 單詞：Summer,as,magazines,young,teach,news,stories,children,international,exciting, 翻譯句子：writing stories,/to work late,/kind of,/police station,/newspapers,magazines/,work for,as,/an international,children of/to teach 閱讀理解：,can’t ,can’t U6答案： SectionB: 一單詞: 7hot cold 8cool a good time 翻譯句子： do when rains , are wearing scarfs at playing beach volleyball surprised/ in this heat 選詞填空：Like, warm,looks, right,not,or,in,visit, about, because U7答案：一：across hospital,magazines,camera，snows 二：us,friendly, beginning,Children’s,surprised 四：’t any, have, does, did, does, ’s doing, doing, do,’s like, a good time