数学寒假作业答案（内蒙古少年儿童出版社）八年级（初二上学期）

2024-12-29 14:22:10

推荐回答（4个）

回答1：

　　这是英语
　　一）一、send true pieces advice breath二、CBBAABCCCC三、BBAACCBCCB
　　四、improving counting Have visited have finish eighth 五、writed down (enjoy yourself) has been send ask for六、Where have you been? What did you do there? What are they about? Yes,it is. How is it?七、DCBAB FTFTF 八、travelling been likes has took both enjoy dilicious had haven't
　　(二）一、flew center planet sold fell 二、(has gone) (have worked) didn't (to play) (have watched)三、experience invited tried prize enter 四、CCABDADCBA 五、CABCDCBCDD 六、(heard of) (look after) (on earth) (was doing) (grow up)
　　七、What is it? How did he came back? The Project Hope has raised much money.
　　Can they learn well? Good idea.八、Because it has everything we need to live. No,it isn't. Because they are far from us. Eight. Yes,they do.ABBCC九、teacher school children men's answer happened heard becomes older
　　(三）一、country Suddenlly serious composer across 二、BCDABADCCA 三、ABCADAABDA
　　四、worried (was reading) is (to kill) (to be) 五、proud of felt sad afraid of taking live on to invite
　　六、How can I get to school? how can get to school(没打错，就是写两遍）Is it far form there?
　　How can I get to there? Thank you 七、DCDCC CCBC
　　八、from care away lonely quiet take enjoy holiday journey because
　　(四）一、matter smells soft introduce tight 二、BCAACABABD 三、ABCCDABCAD
　　四、lovely gets (to teach) (to take) have losed 五、fell with takes place can't speak hear singing take photos
　　六、 Who is he? When was he born? How long had he played? When did he start to play? Yes,he did.
　　七、DBABC DCADB 八、thinks places found putting came quiet opened watches other

　　(五）一、opposite between centre market Chairman 二、BBABCABBAB

　　三、tell turn far minutes way next about Which thanks pleasure 四、BCABCACBBB

　　五、EDABC 六、quite because quiet other mistakes

　　(六）一、protect danger reserve sure peace 二、AABBABCCBA 三、CBAABBCCBB

　　四、surprisal laugh (to read) (to catch) using

　　五、Can we planting trees tomorrow? How do you know it? Where is your home? See you later

　　六、BABCD present important Another polite use ask make sorry broken forgive

　　七、white only age However getting danger built for live

　　(七）一、(to come) lost impossible famous sent 二、ABCACBCACA

　　三、been (I haven't) famous Opera drink think Can who read writer

　　四、holiday Sunday On honor wishes lived love letters mothers 五、People's Square 120,000 six library Saturdays

　　When was he born? 像一个小男孩一样，他过着愉快的生活 O▪Henry was believed to have stolen money

　　It made readers very surprised. 六、about koalas has where care build No than baby big

　　(八）一、lost impossible asked exciting customers 二、ACBAACCCAA

　　三、What is she like? What is he look like? Can I make friend with he? How is she? Oh,I'm sorry to hear that.

　　四、can't depend on It's pleased may be cold It's possible Make sure

　　五、ACBCCCBACC 六、ABCCA in He can't speak English. The waiter soon brought a cup of tea to him. (to drink) C
　　物理答案：p1.振动声带空气风 300 高大声源入耳传播保护环境影响休息和学习 AADBBAC P3 乙振动固体响度音调减少噪音响度音色音调声波能量 476 振动响度丙甲 ACCDB 闹钟不响了真空不能传声略每秒640米光年光的直线传播 3*10的8次方慢反射反射 6 0 120度 4.05*10的8次方日食 ADAA 画图略 P7 60度 0度 40度直线月亮光路可逆性反射角变小 BCDDC 画图略 13.由长变短再变长 P9真空 3*10的8次方空气＞水＞玻璃由长变短再变长 7 牛顿色散 1 2 相等入射角 FH HD HB BDCA 光的直线传播平面镜成像光的折射画图略 P11 45度 60度凹面会聚凸面镜发散光的直线传播三原色太阳红黑 DADABD 【光从空气斜射入不同介质折射角度不同折射角小于入射角】物因为蜡烛在燃烧样子会改变 13正立放大的虚像近 30 凸 80 实 10 同一高度对照 0 远离凸透会聚 BBACAA 凸透镜光屏同一水平面 10 向左缩小倒立实向右放大倒立实不成像正立放大虚像焦距用刀把冰削成凸透镜会聚阳光起火 P15 凸透倒实大于2f 倒立缩小实照相机晶状体视网膜厚强前凹 40cm CAABB 20 猜想3是对的

　　P17 CDBABCDADC 画图略

　　P19 1 13 升华熔化液化凝华凝固汽化液化固上升固液共存不变液上升 6 48 温度增加真空压缩体积 CBCCBA 吸热降温制冷 P21 连线100 36.5 0 105 -10 24 升华酒精 -2 升华凝华液化小水滴 BCAAC 因为酒精的凝点比水银低煤油的沸点比酒精的沸点高同种适当画图略因为黑色能吸七色的光 P23 液化融化吸热蒸发吸热低凝华吸 BABBAC 综合能力题BADEC 外面冷里面热里面的水蒸气液化在内侧反之外面热里面冷外面的水蒸气液化在外侧 P25 并联串联电负正等于短路 C a A 1780m 支路正负 0.24 0.54 1.2 2.7 CDDBDCC 摩擦发生了静电 P27 正负正 1比150 串 200m 把电导入地下正负接线柱接反了试触较大的接线柱 0.5A DBBB 结论正确错误不填多实验几组避免偶然性电流过大正负接线柱接反了变少画图略 P29 L1L2L3 串 L1L2L3 并 L3 0.2A 0.2A 串流电路电流相等 A3

　　A2 A 0.4A 0.5A 1.5A BBBCD 画图略

　　数学答案：
　　一、选择

　　P1,CDBDD P3,DDBDCCA P5,ABBDC P7,CDDBCC P9,BBBCAA P11,DDCCCB

　　P13,CCBCCADCBB P15,BABDBADA P17,CDBCAABC P19,CACBABD P21,CADCDACCCC P23,BCADDCBCAB

　　P25,BBBBBACDA P27,CABACDBC P29,DBCCABCCC

　　二、填空

　　P1，95度 ∠C=∠D 74度 1 P3，8.∠B=∠D AB=FD 9.AC=BD AO=BO OC=OD ∠A=∠B ∠C=∠D ∠AOC=∠BOD

　　∠AOD=∠BOC 10.BE=CF 11.2CM 2CM 12.△ABD=△ACE

　　P5,6 375 35° ∠B=∠DEF或AC=DF 70° P7，01001 15 30°

　　P9，关于x轴对称 90 （－1，2）略 P11，12cm 70 30° 2a+6 55度 1

　　P13,正负2 7m ＜ 0、根号2 0.6 P15，根号2-根号5 根号5-根号2 5 1 4 0、1 ＞＜

　　根号2和“2-根号2”

　　P17,S=100π-r²π 0＜r＜10 y=4x 二分之三、1 y=50+4x（x大于或等于0）－1、12、18、14、8、自己编

　　P19，-1 （6，0）（0，3） 9 k＞0 2，≠-1 6 0 四分之三 20，4+4n

　　P21,2 3 ＜ 100，甲，8，-2小于或等于k＜0 11 y1＞y2

　　P23,＞-2 ＜-2 =-2 小于或等于2 x=三分之四 y=1 ＞-3 ＜-3

　　P25，大于或等于负三分之五且不等于4 y=x （1，0）负三分之八 2 y=三分之一x—4或y=负三分之一x—3 k甲＞k乙 x＞-1
　　只有这么多，回来再发，多给分

回答2：

数学有解答题答案吗求助大哥大姐大妹子大兄弟

回答3：

哇靠太感谢了快点昂就差数学了耐死你了

回答4：

谁会呀|、、、、、、、、啊

兄弟们？？？？？

哥们跪求