暑假作业七年级答案(七年级数学暑假作业答案)
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七年级数学暑假作业答案
下面是搜集的七年级数学暑假作业答案,请核对版本,答案仅供参考。
一. 1.× 2.√ 3.√
二. 1.B 2.B 3.B 4.D 5.A
三. 1.∠BCE=∠ABC 2.南偏西55°
3.对顶角相等 等量代换 平角 等量代换 平角 等量代换 补角
4.25
四. 1. 解:∵∠2+∠3=180°
∴a∥b(同旁内角互补,两直线平行)
∵∠3=∠4 ∴c∥d(同位角相等,两直线平行)
∵a∥b
∴∠3=∠1=60°(两直线平行,同位角相等)
∵∠3+∠5=180° ∠3=60°
∴∠5=120°
2.跳过
3.证明如下:
∵AB⊥BC
∴∠ABC=90°
∵BC⊥CD
∴∠BCD=90°
∵∠ABC=90°∠BCD=90°
∵∠BCD=∠ABC ∠1=∠2 ∠2+∠FBC=∠ABC ∠1+∠BCE=∠BCD
∴∠FBC=∠BCE
∵∠FBC=∠BCE
∴BF∥CE(内错角相等,两直线平行)
4.解: AB∥CD 理由如下:
∵BE平分∠ABD
∴∠ABD=2∠1
∵DE平分∠BDC
∴∠BDC=2∠2
∵∠1+∠2=90°
∴∠ABD+∠BDC=180°
1. 垂直于同一条直线的直线是平行的
2. 作垂线
要是两条垂线的长度相等那么就是平行的
3. 利用平行线的内错角相等:两个镜子平行,所以90-∠2=90-∠3所以∠2=∠3,则∠1+ ∠2=∠3+∠4,即进入光线和离开光线的内错角相等,所以平行
一. 1.√ 2.× 3.√
4.×
二.1.A 2.D 3.A 4.B 5.B 6.D 7..B 8.D 9.B
三. 1.3 6
2.第二
3.-1
4.10
5.甲追乙的时间是11.25小时。 需要4.5小时相遇 甲追乙需要12小时
6. 方程组32(x+y)=400 180(x-y)=400
7.10
8. 因为两个的值不一样,所以有一个数为负数
当x为负数时,x+y=4 |x|+|y|=-x+y=7 解得x=-1.5 y=5.5 x-y=-7
当y为负数时,x+y=4 |x|+|y|=x-y=7 x=5.5 y=-1.5 x-y=7
四.
1.略
2.略
3. 若该矩形ABCD中,是AB=6,AD=4。那么在AB上取一点E使AE=2;在AD上取一点F使 AF=1。过点E、点F分别作AD、AB的平行线EM、FN,交于点O,即O为原点,EM为x轴,FN为y轴,则D点坐标为(-2,-3)。
另外三点的坐标为A(-2,1)、B(4,1)、C(4,-3)。
4.将x=2 ,y=1分别代入两个式子里,有
2a+b=3,2b+a=7
解这个二元一次方程得出,b=11/7,a=5/7
5.4x+3y=7(1)
kx+(k-1)y=3(2)
x=y(3)
因为x=y代入(1) 7x=7y=7 所以x=y=1
代入(2) k+k-1=3 2k=4 k=2
6. x=3,y=4待入a1x+b1y=c1,a2x+b2y=c2,有
3a1+4b1=c1
3a2+4b2=c2 (1)
3a1x+2b1y=5c1
3a2x+2b2y=5c2
方程组两边除5有:
3/5a1x+2/5b1y=c1
3/5a2x+2/5b2y=c2 (2)
比较方程组(1)和(2)
有3x/5=3 2y/5=4
所以x=5,y=10
7. 设火车的速度和长度分别是v, s
800+s/v=45 800-s/v=35 解得v=20 s=100
1. 解:1.设计划新建校舍X平方米,则拆除校舍为7200-X平方米.
根据题意列出方程:
80%X+(1+10%)(7200-X)=7200
8X+11(7200-X)=72000
3X=79200-72000
X=2400
计划拆除校舍:7200-X=7200-2400=4800(平方米)
答:计划新建校舍和拆除校舍各为2400平方米和4800平方米.
2.
计划新建校舍用的资金:700*2400=1680000(元)
计划拆除校舍用的资金:80*4800=384000(元)
计划在新建和拆除校舍中用的资金共:1680000+384000=2064000(元)
实际新建校舍用的资金:80%*2400*700=1344000(元)
实际拆除校舍用的资金:(1+10%)*4800*80=42240(元)
实际新建和拆除校舍用的资金共:1344000+4240=1386240(元)
节省的资金为:2064000-1386240=677760(元)
节省的资金用来绿化的面积:677760/200=3388.8(平方米)
答:在实际完成的拆建工程中,节余的资金用来绿化是3388.8平方米.
2. 解:设活动前Ⅰ型冰箱为x台,则Ⅱ型冰箱为960-x台
x(1+30%)+(960-x)(1+25%)=1228 解得x=560
Ⅰ型冰箱:560台
Ⅱ型冰箱:400台
(2)Ⅰ型冰箱:560*(1+30%)=728台
Ⅱ型冰箱:1228-728=500台 13%(728*2298+500*1999)
≈3.5*10五次方
3. 设要用8m的水管X根,5m的水管Y根
8X+5Y=132
因为132-8X是5的倍数,所以8X的尾数是2或7(尾数为7是单数,不会是8的倍数,不考虑尾数7)
所以X的尾数为4或9,且X≤132/8=16.5
所以X可选4;9;14三种,相对Y分别为20;12;4
即有3种方案:8m的4根 5m的2
8m的9根 5m的12根
8m的14根 5m的4根
因8m的单价50/8元/M《5m的单价35/7元/m
所以选8m管用得最多的方案最省钱,即选 8m的14根 5m的4根
1. 解
梨每个价:11÷9=12/9(文)
果每个价:4÷7=4/7(文)
果的个数: (12/9×1000-999)÷(12/9-4/7)=343(个)
梨的个数:1000-343=657(个)
梨的总价: 12/9×657=803(文)
果的总价: 4/7×343=196(文)
解:设梨是X,果是Y
x+y=1000
11/9X+4/7Y=999
解得:X=657;Y=343
即梨是657个,钱是:657*11/9=803
果是343个,钱是:343*4/7=196
2.解:设树上有x只,树下有y只,则由已知的,得:
y-1/x+y=1/3
x-1/y+1=1
解得x=7;y=5
1. C
2. C
3. 120°
4. 解:∠AMG=∠3.
理由:∵∠1=∠2,
∴AB∥CD(内错角相等,两直线平行).
∵∠3=∠4,
∴CD∥EF(内错角相等,两直线平行).
∴AB∥EF(平行于同一条直线的两直线平行).
∴∠AMG=∠5(两直线平行,同位角相等).
又∠5=∠3,
∴∠AMG=∠3.
5. .(1)设随身听为x元,书包为y元,
x+y=452 x=4y-8 将2代入1得 4y-8+y=452,解之得y=92,x=360
(2)若在A买的话要花费452*0.8=361.6(元)
若在B买要花费360+(92-90)=362(元)
所以他在A,B两个超市都可买,但A更便宜
6. A4(16,3)
B4(32,0)
An((-2)^n,(-1)^n*3)
Bn((-2)^n*2,0)
1.A
2.C
3.A
4.小红的意思:同位角相等两直线平行
小花的理由:内错角相等两直线平行
另一组平行线:AB//CE 理由:∠ABC=∠ECD →AB//CE ( 同位角相等两直线平行)
5.设2元x张,则5元58-20-7-x 张
2x+5(58-20-7-x)+20+10*7=200 x=15
2元15张,则5元16张
6. (1) SΔABC=SΔABP,SΔAPC=SΔBPC,SΔAOC=SΔBOP
(2) SΔABC=SΔABP, 同底等高的三角形面积相等
(3)连接EC,过点D作EC的平行线,平行线交CM于点F. EF就是满足要求的直路。
(3)理由
因为平行线与EC平行,所以点D到EC的距离【三角形ECD在边EC上的高】=点F到EC的距离【三角形ECF在边EC上的高】。
三角形ECD的面积=三角形ECF的面积。
所以,
五边形ABCDE的面积 = 四边形ABCE的面积 + 三角形ECD的面积 = 四边形ABCE的面积 + 三角形ECF的面积. 因此,直路EF满足要求。
有道理的,三多,都是99条,一少指3条(又指三个秀才),并且都是单数。这种题有多种分发。不过这种有一些含义,其他的只是做题。
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七年级:英语暑假作业答案
下面是为你整理的七年级:英语暑假作业答案,欢迎阅读:
参考答案
(一)
一、选择填空
1-5 BCDDA 6-10 BBDDA 11-15 DCCDC
二、完形填空
1-5 CBCDA 6-10 BDBAD
三、阅读理解 ACCBD
四、填词
1.pollution 2. strange 3. Appeared 4. geography 5. dangerous 6. frightened
7.Scientists 8. twentieth 9.towards 10.practises 11.None 12.northwest
五、动词填空
1. is knocking 2.bought 3.to learn 4.goes 5. playing 6. Don’t forget , to take 7. doesn’t rain 8.Listening 9. will begin
六句型转换
1.What’s, weight of 2.couldn’t see anything 3,Each of , has 4. Don’t take 5. Which book 6. How long 7. Differen’t from 8. What did, do 9. What a tall building it is !./ How tall the building is !
10 I was excited to see so many amazing things.
11 Is it necessary to walk the dog once a day?
七、翻译句子
1.Look! How happily the children are playing!
2.Thank you for recommending such an interesting film to me.
3.It’s bad for your health to go to school without having breakfast.
4.Do you know what happened to him last week?
5.The teacher told the children to keep away frem danger.
八. 作文
Dear Mr. Wu ,
I would like to recommend Sandy for this year’s Best Animal Lover Award.
Sandy is a kind and helpful student. She often helps others.
Sandy also likes animals very much. She often reads articles about animals and watches TV programmes about them She is amember of the school Animal Lover Club. She does a lot of work for the club.
One day, Sandy took a homeless dog to her home. She gave the dog something nice to eat. She brushed its fur to make it clean. Then , she took the dog for a walk in the park.
I think Sandy should get the award . If she can get it , I’ll be very happy.
I look forward to hearing from you soon.
(二)
一 单词辩音 ABABB
二、单选题 AADCB DAACC CBDDA
三 完型填空31-35 BDACA 36-40 ACBBC
四 单词填空
1. thousand 2.loaves 3.fifty-first 4. until 5. preparin 6.neighbours’, 7.bookcases/bookshelves 8. local 9. pollution 10.None
五.动词填空
1.is lying 2.look 3.likes 4.not to play 5. to worry
六 BDBBDAC
七 句子翻译
1. Teaching the parrot to say “thank you” is not difficult.
2. He uses the blanket to put out a fire, he saved this 79 year-old people.
3. This idea sounds funny!
4. Nobody knows what happened to her yesterday.
5. We went home until the snow stopped then.
八 书面表达
Suzhou is an old and beautiful city. There is less air pollution here ,the air is very fresh /good.
There are also a lot of pretty gardens in Suhzou.many visitors come here every year.
Suhzou is very clost to Shanghai. It only takes an hour to get to shanghai by bus/car..
If you visit Suhzou , you can buy lots of nice silk scarves,taste Suzhou delicious snacks.
Welcome to suzhou ! It is a really wonderful city!
(三)
—、1.anybody 2.noise 3.weather 4.quietly 5.catches 6.chance 7.planning 8.throw 9.pets 10.sign
二、1.will/is going to be 2.is talking 3.went 4.was 5.don’t sell 6.receiving 7.swimming 8.Don’t be 9.called 10.brush
三、1.D 2.A 3.D 4.A 5.C 6.A 7.B 8.B 9.B 10.C 11.B 12.B
四、1.Most of the time.I enjoy staying/being at home alone.
2.1isten!Someone is ringing the door bell.
3.If you want to keep fit.make sure you do some exercise every day.
4.I’m very interested in watching NBA games.
5.Dogs are our best friends.we shouldn’t be afraid of them.
五、1.A 2.B 3.C 4.B 5.D 6.B 7.C 8.A 9.D 10.C
六、(A)1.D 2.B 3.C 4.A 5.C
(B)1.B 2.D 3.C 4.A 5.B
七、
My Good Friend
I have a good friend.She is a Chinese girl of 14.Her name is Zhang Jie.She studies in No.5 Middle School.She is good at English,Chinese and Maths.She can sing and play basketball quite well.She likes watching TV,too.She is very kind and friendly.She is always ready to help others.What a good girl!
(四)
一、1~5. BDACC 6~10. CDAAA 11~15. DBACC
二、1~5. ACADC 6~10. CBCBA
三、1~5. CBAAD 6~10. BCDBA 11~15. BDCBD
四、1. wonderful 2. strange 3. surprised 4. memory . 5. through
6.dangerous 7.luckily 8.past 9.brave 10.members
五、1.You can get better grades if you try your best.
2.My brother spent a week teaching me how to play the guitar.
3.We should learn from the hard-working students.
4.We must arrive at the train station before 8.00 tomorrow morning.
5.Don’t be afraid of the dog. It never bites.
(五)
单选题
D C A C B A C D B A B C B A D
完形填空
1.D 2.B 3.A 4.B 5。C 6.A 7.D 8.B 9.D 10.C
阅读理解
C A B B A C D
单词拼写
1.none 2.cook 3.poured 4.million 5.Remember 6.dangerous 7.wide 8.weighs 9.scientists 10.frightened 11.exit 12.missed
句型转换
11.How interesting the book is! What an interesting book it is !
12.Are they going to have a picnic this Sunday?
13.Don’t walk the dog every day.
14.Are those pencils Kitty’s?
15.H0w many classrooms are there in your school?
作文
Hi, everyone! The flood washed away our house, but I was lucky enough to stay alive with my family. Today I will tell you my dream home.
My new house is opposite a park and everyday I can hear birds sing happily. There are two rooms in my new home and I share a room with my brother. There is a football field in front of my house. After school, I can play football with my friends there. It is far away from the big cities., so the air is clean. Every it takes me 5 minutes to walk to school.
This is my dream home. I am looking forward to have it one day.
(六)
一、 1- 5:CDDDD 6- 10:ADCCD 11- 15 :BABDC 16- 20:CCABA
二、1 dangerous 2 frightened 3 scientists 4 twentieth 5 towards 6 practices 7 None 8 north-west
三、1 is knocking 2 bought 3 to learn 4 goes 5 playing 6 Don’t forget to take
7 doesn’t rain 8 Listening 9 will begin
四、1 What’s, weight of 2 couldn’t see anything 3 each of , has 4 Don’t take 5 Which book 6 How long 7 different from 8 What did , do
9 How tall the building is!/What a tall building!
10 I was excited to see so many amazing things.
11 It is necessary to walk the dog once a day.
五、1 in---on 2 beautifully--- beautiful 3 searching后加 for
4 were---was 5 opened---open
六、1 Look! How happily the children are playing!
2 Thank you for recommend me so interesting film.
3 It’s bad for your health to go to school without breakfast.
4 Do you know what happened to him last week?
5 The teacher asks the children to keep away from danger.
七 完形填空 1-5 CADBC 6-10 BACBD
八 阅读理解 1-5 ACBDA 6-10 ADDCB
十、Dear Chairperson
I would like to recommend Simon for this year’s Youth Award.
Simon is a clever boy.He can learn things quickly.He is good at his lessons.
Simon is thoughtful,so he plans things very well.He often organizes class activities.We all like him.Simon is also very helpful.Once he saved a boy out of water.The boy’s parents are very grateful to him.
All of us think Simon should get this award.We look forward to hearing from you soon.
Yours faithfully
Jack
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七年级上册暑假作业答案
暑假的时间很长,因此要趁暑假抓紧学习,暑假作业也要认真完成才行,暑假作业做完之后可以来对一下答案,看看自己还有哪些知识点是欠缺的。下面是我给大家带来的2022七年级上册暑假作业答案出炉,以供大家参考!
七年级上册暑假作业答案【语文】
【一】
1.BE2.ABB3.A4.A5.A6.B7.C8.A8.A9.B10.A11.A
12.智多星东道主铁公鸡糊涂虫
13.鹏程万里任重道远沧海一栗秀中慧外
14.林黛玉
15.chai(第一声)cha(第四声)cha(第一声)chai(第一声)cha(第一声)chai(第一声)ci(第一声)cha(第一声)
16.麻子,无头发,黑脸,大脚,不大好看
17.(1)这样写是为了突显“我”自己的莲花灯做得不好,心里有一些难过,而刚好可以跟后面说宋妈告诉我的道理相呼应。
(2)自己写
例:在一年当中我最盼望的节日是六一(虽然我知道六一已经不属于我们)但看着比自己小的弟弟妹妹们开心的过着属于他们的六一,自己心里也会跟着他们莫名其妙的开心起来。
【二】
1.lan(第二声)bu(第三声)chi(第四声)long(第三声)hui(第四声)dan(第四声)
2.斓岖懊巅帐嚎
3.(1)电话,电视机,电脑,跑步机
(2)汽车,飞机,自行车
(3)椅子,电话
(4)跑步机,自行车
(5)汽车,飞机
4.A
5.黄河远去,白云一片,孤城万仞山。羌笛何须怨?杨柳春风,不度玉门关。
6.我选第二句,因为在这样的夜里,听到有人用笛吹奏着“折杨柳”的曲子,那充满伤感、思念的声音,又有谁听了不会油然兴起怀乡之情呢?沦落异乡的浪子,原本就思念故园,何况又在寂寞的深夜里,听到伤感的曲调,自然更加深了怀乡情愁。
7.告诉我们世上的生物渐渐减少,我们应该保护资源,不浪费资源
8.人物:李大钊
理由:李大钊爱国,为国牺牲的精神,值得我们学习
9.(1)你飞的越高,离死亡的距离越近
(2)越重越危险
10.(1)蚕(2)鸟(3)黄鹂(4)鹦鹉(5)蜻蜓(6)鸭
11.(1)依依不舍(2)其乐无穷(3)默默无闻(4)万事俱备
12.学校收到了出版社送来的很多本书
13.D
14.我是伟大的中国人民的儿子
15.(1)B(2)C
16.网络是一个虚拟的社会,同样也需要一种不同于现实的语言
17.(1)嗷(2)嘶(3)吠(4)吼(5)嚎(6)吱(7)啼(8)咩
18.月、朋、日、明
19.自吹自擂
七年级上册暑假作业答案【数学】
第一单元
1.B
2.D
3.C
4.C
5.6
6.2a六次方b四次方
7.35
8.49分之125
9.负3分之1
10.(1)7(2)0(4)-1
第二单元
1.同旁内角
2.85度
3.58度
4.80或100
5.南偏西45°
6.B
7.A
8.D
9.B
10.
添加:∠3=∠4
∵∠1=∠2∠3=∠4
∴∠1+∠3=∠2+∠4
∵∠ABD=∠CDN
∴AB‖CD
11.
∵CB‖AD∠ADB=20°
∴∠CBD=∠ADB=20°
∵折叠
∴∠GBD=∠CBD=20°
∴∠CBE=40°
∵BC‖AD
∴∠CBE=∠AEB=40°
∵∠AEB=∠DEG=40°
又∵∠G=∠C=90°
∴∠EDG=180°-90°-40°=50°
七年级上册暑假作业答案【政治】
第一课
一、单项选择题
1.D2.C3.D4.A5.D6.C7.C8.B9.C10.B
二、不定项选择题
15.A
三、非选择题
16.根据自己的实际情况回答。如主动为班级搞卫生、为班级图书角献书、为美化班级环境献花等。
17.可从学习、学校生活、班级活动等等方面来谈。
18.略。
19.根据实际情况,回答即可。
【能力提升】
一、单项选择题
1.C2.C3.A4.B5.C6.A7.D8.C
二、不定项选择题
三、非选择题
15.略
16.⑴激动、狂喜、好奇、疑惑。
⑵先感到有些陌生、孤独,后来又感到温暖、自豪、快乐。
⑶不再自由散漫,不再应付差事,而是更加勤学好问、办事认真、不让四年时光虚度。
17.⑴不善于和他人交往。
⑵积极参加集体活动,展示自己的才华;主动和别人交往……
18.“起音”是指共同的集体目标。“专业音”是指发挥个人的才能。“团队音”是指同心协力,团结奋斗。
第二课把握学习新节奏
【基础过关】
一、单项选择题
1.B2.D3.D4.B5.D6.B7.C8.B9.A10.D
二、不定项选择题
三、非选择题
17.此观点是错误的。学习成绩好的同学的学习方式当然有可取之处;但他们的学习方式适合他们的特点,并不见得完全适合别人。每个人都有自己的学习方式,各种方式各有特点。只有不断尝试、努力摸索,才能找到适合自己的 学习 方法 ,把握学习的新节奏。照抄照搬别人的学习方式是不行的。
18.写出老师的教学风格,主要评价老师的教学方式和特点。
19.⑴劝学格言:
①习惯是一种顽强而伟大的力量,它可以主宰人生。——培根
②我没有特别的天赋,我只有强烈的好奇心。——爱因斯坦
③读史使人明智,读诗使人灵秀,数学使人周密,科学使人深刻,伦 理学使人庄重,逻辑修辞之学使人善辩,凡有所学,皆成性格。
⑵勤奋苦读 故事 :
①略。
②略。
③由 成语 “韦编三绝”引出的孔子在晚年苦读《易经》的故事。
⑶结合自己的实际分析。答案略。
20.略
【能力提升】
一、单项选择题
1.B2.C3.A4.B5.A6.B7.D8.C9.D10.B
二、不定项选择题
三、非选择题
16.⑴①对物理学的兴趣,探索中的发现使他非常快乐。
②连续几天待在实验室里,孤单、寂寞。
⑵学习中的苦有:学习任务重,作业有时很多;学习难度大,必须努力才能完成;遇到一个又一个的难题难以解决。学习中的乐有:我们逐渐了解了学习中的奥秘,好奇心得到满足;发现自己的能力;解决了一个个的难题时所获得的快乐。
17.⑴学习很重要,因为人的知识和能力都是通过学习获得的,不学习不能了解世界的奥秘,不学习就掌握不了为社会、为人民服务的本领。
⑵提高自己的学习成绩,首先要做学习的管理者,要学会自己学习。其次要提高学习效率。再次要科学安排时间,有计划地学习,还要了解自己的学习方式,掌握正确的学习方法。
18.⑴点石成金的故事告诉我们在浩瀚的知识海洋中,掌握科学的学习方法尤为重要。
⑵引申到学习上来是说明我们在学习知识的时候要注意理解分析、综合归纳,能理解运用、理论联系实际,拥有学习的金钥匙。
19.⑴
①自我管理不良,说明他们以前没有养成自理、自立的习惯,对父母的依赖性比较强,不适应中学的管理方法;
②感到学习吃力,说明他们学习方法、学习习惯不适应增多了的新学科;
③师生、同学关系紧张、不和谐,是由于他们与老师、同学不熟悉,不愿意主动交往或不会交往而造成的。
⑵
①要学会自主学习。作为初中生,应学会逐步摆脱对父母和老师的依赖,成为一个自主的学习者。
②要注意提高学习效率,科学安排时间。
③要找到适合自己的学习方式。
④要主动和老师、同学相处,要和同学团结协作,互助前行。
20.⑴我认为制定 学习计划 十分必要。因为制定学习计划对我们的学习有很多好处。
①明确学习目的,保证学习任务的实现。
②科学地组织各项学习任务,提高学习效率。
③磨炼学习意志。
④增强计划能力,使自己成为独立的、能有条不紊地安排学习和生活的人。
⑤养成良好的学习习惯。
⑵略。
⑶我认为在制定学习计划时,要注意以下几个问题:
①计划莫贪婪,即在制定计划时,要充分考虑学习时间在一天生活中所占的比重;要把学习目标和自身的条件联系起来。
②计划要目标明确、具体。要有近期计划,还要有远期计划。要根据自己目前的实际学习状况,目标不要定的太高,也不要定得太低。
③计划要突出重点,要严格执行。若发现执行困难或效果不好,可及时调整,从而制定更为科学的学习计划。
④要学会对学习时间的管理和学习环境的管理。
七年级上册暑假作业答案【生物】
绿色植物的光合作用
1、d2、d3、4、5、d
6、(1)耗尽已有淀粉(2)叶绿素黄白色酒精燃烧或爆炸(3)adf
(4)二氧化碳光能和叶绿体(5)光二氧化碳叶绿体
绿色植物的呼吸作用
1、d2、d3、d4、d5、c6、d7、a
8、(1)蒸腾(2)氧气光合(3)二氧化碳呼吸
绿色植物的类型与种子的萌发
1、d2、3、d4、5、d6、c7、8、a
9、(1)胚芽
10、(1)充足的空气(2)温度水分(3)②
(4)适宜的温度、充足的空气和一定的水分
植株的生长与开花、结果
1、c2、a3、4、d5、c6、c7、a8、b
9、(1)②③②(2)传粉(3)雌蕊(4)子房胚
观察细胞的结构
1、a2、a3、d4、c5、d6、d
7、(1)动物细胞壁(叶绿体、液泡)
(2)细胞膜
8、(1)①④⑥(2)左反光镜和光圈(遮光器)细准焦螺旋
(3)气泡一侧先接触水滴,缓慢放下
细胞的生活
1、a2、3、4、d5、d6、d
7、(1)液泡
8、(1)细胞壁(2)细胞核(3)染色体dna
七年级上册暑假作业答案【地理】
【一】
1-11.ADDCBDCCBCA
12.(1)Q4 冬至 (2)66.5℃(3)Q2(4)Q3Q4
13.(1)略(2)DC(3)昼长逐渐变短(4)赤道昼夜平分
14.(1)北美(2)100°W,20°N西热(2)自转
【二】
1-10.DDCABBCCCC
11.(1)600(2)鞍部(3)③(4)西北略(5)乙理由:地势平坦,开阔、水源充足
12.(1)A山脊B山谷(2)68米正东方(3)A到C(4)不合理,因为经过陡崖
13.(1)盆地山顶(2)1:500000(3)B自西向东(4)①水从高处流向低处
【三】
1-10.ABADCABCBC
11.(1)北(2)B欧洲C北美洲D非洲E南美洲(3)①印度洋③大西洋(4)南极洲亚洲欧洲(5)白令北冰洋太平洋略(6)海洋陆地(7)珠穆朗玛峰A青藏高原E安第斯山脉刚果盆地D
12.(1)A亚洲B非洲C大洋洲(2)南马六甲印度(3)热热带季风(4)B
如何做好初二知识的预习?
“雄关漫道真如铁,而今迈步从头越。”随着初一暑假的来临,也意味着一个新的学习时代即将开始,初一的同学们,在暑假里除了要复习初一的各科知识,完成暑假作业,更主要的是预习初二各学科知识,为接下来的学习奠定一个良好的基础,那么,初二各科如何预习呢?
1、语文:要重视多读多写。
阅读是学好语文的关键,利用暑假多读课外书、抄 好词好句 积累。在读书的同时抄下好的词语、 句子 ,甚至段落。要多读、多练,让读书成习惯。
另外要利用暑假多练笔写 日记 ,把平时观察到的有新意的景、物、人、事都用 随笔 记下来,思考整理,写成周记或日记,有话则长,无话则短,日积月累,写作的素材就多了,分析综合能力也跟上了。课余练笔,源于生活这股活水,随心而至,多写真情实感,入情入理,还防止了套式 作文 、抄袭作文的出现,“多练笔生花”。优秀的作文就是练出来的。
2、数学:一定要提前做好预习。
对于初一学生来说,过完这个暑假,就开启了初二生活,而初二数学知识,几乎占整个初中阶段知识点的一半。如果不利用暑假提前预习,很难有所突破。中考几何的重头戏:三角形全等和它的三大转换,都要在初二全部讲完。因此,要么利用初一的暑假时间提前培养是十分必要的。当然,学好数学也为新增科目“物理”也打下了良好的基础。
3、英语:暑假期间决不能忽视。
英语是一门语言,就是要多读、多听、多写,暑假是学英语的好机会,一来时间比较集中、灵活,二来利用暑假可以提高词汇量。这里需要给大家提个醒,暑假期间一定要每天都有 英语学习 的计划,这样才能培养英语语感,夯实英语基础。
很多初一孩子都在外面 学习英语 ,会感觉初二英语没什么,觉得没必要下多大功夫。错了,记住英语一定要每天都学,但不赞成学课本,建议大家可以利用暑假时间学习新概念教材,增加单词量和知识点,循环大背诵一定要搞,每天至少十分钟的听力一定要有,假期要看三部英文版的电影。这对初二英语的学习帮助是很大的。
4、物理:一步领先,步步领先
初二年级开设的物理对初一孩子是个全新的领域,如果不能够提前对所学知识进行一定的了解,在知识点比较难以理解的时候,就很难跟上老师的步伐。物理初期看似简单,但是真正要学懂,其难度不亚于数学。因此假期也要做好物理的预习,俗话说“一步领先,步步领先”初期建立起优势,后期学起来也就格外轻松了。
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快乐的暑假即将过去了,在开学之际,不要忘记写完自己的暑假作业哦!下面是我给大家带来的 七年级英语 暑假作业答案2022,希望对您有所帮助!
七年级英语暑假作业答案2022
P41
1.常见标志
A 停车位 安全出口
肯德基 小心路滑
B No parking No smoking
No photos dustbin
C No food
No music
2. 广告 英语
1.可口可乐
2.苹果(手机、电脑等)
3.Just do it. (只管去做。)——耐克运动鞋
4.Focus on life. (瞄准生活。)——奥林巴斯相机。
5.飘柔。
广告英语的语言特点简单,明了。
3.动物与英语 爱屋及乌。
2.I wanted mother’给妈妈的礼物我本想保密,但妹妹却露出了马脚 面临驾驶考试,他急得像热锅上的蚂蚁。
4.一石两鸟。
5.非常宁静。
7.披着羊皮的狼;面善心恶。
8.丑小鸭变成了白天鹅。
p44
1. There were not so many roads there were many old houses and it was dirty and poor.
There was no supermarket before and therewere not so much entertainment equipment in the square.
2. There are many trees and flowers in my countryside.
There are established many supermarkets in my hometown.
3. There will be many tall buildings in my hometown.
4. I love my hometown
My hometown is a beautiful place. But in the old days it was a poor and backward little town. Many people had no work. They lived a hard life. In 1949 my hometown was liberated. Since then great changes have taken place there. The streets have been widened. The life of the people is greatly improved. I love my hometown. All the more I love its people. They are working hard so as to make it still richer and more beautiful.
P46
1. Family
2.,其结构是:3.working buying visiting
规律:直接加ing
taking having driving
规律:去e加ing
stopping shopping getting
规律:双写辅音字母,再加ing
Lying
规律:变ie为y,再加ing
4.否定句 The boy is not playing basketball.
一般疑问句 Is the boy playing basketball?
肯定回答 Yes,he is.
否定回答 No,he isn’t.
对The boy 提问 Who is playing basketball?
What is the boy doing?
(2)She is opening the window.
Who is cleaning the window?
She isn’t closeing the door now.
I ’m doing my homework.
They are singing under the tree now.
What are the Young Pioneers doing?
is swimming
Where are the visitors swimming?
5.No.5 is having/taking a shower.
6. 夏天的飞鸟,飞到我的窗前 唱歌 ,又飞去了。
秋天的黄叶,它们没有什么可唱,只叹息一声,飞落在那里。 Stray birds of summer come to my window to sing and fly away. And yellow leaves of autumn, which have no songs, flutter and fall there with a sign.
7.
got
is
doing
is writing
make
Is
doing
is lying
Tell
take
is watching
is taking
Keep
don’t forget
(五)
I have a happy summer vacation. I stay at home.At home, I do my homework. I watch TV, too. I love English Today. Because I like English very much. I also like “Tell it like it is”. I watch them everyday. Sometimes I play the computer. I can watch MV and learn English on the computer. I often clean my room.
2. Is it (very) warm today
Would you like to go with us
I’d like to I can’t go with you
it doesn’t matter
When
All right /I agree (with you)
3. 老师所说的bank:岸边,小女孩所说的bank:银行。
经典欣赏
1、He is sleeping.
2、He wants to go to school.
3、Because he wants to know whether Nemo is clear in his mind.
4、休息
阅读欣赏
1.尼蒙的语言是所有Nemo后面的 句子 ,
特点是:简短,有力,表现了他想上学的急切的心情。
2马琳的语言表现了他胆小,但爱孩子的性格特点。
精彩 故事
1.A Lamb and A Wolf.
2.She’s very clever.
阅读思考
①Who is the story about?
A lamb and a wolf.
②When does the story take place?
The story took place one day.
③Where does the story take place?
The story took place in the field.
④Why does the lamv ask the wolf to ring the bell?
The lamb want the ring will call the sheepherder for help. ⑤How does the story go?
It goes acording to time.
⑥What’s the result of the story?
The barking dogs frightened the wolf away and saved the lamb. 社会传真
阅读技巧
2. blocking traffics bans wheelchair accidents
新闻快递
A(3)B(1)C(4)D(2)
阅读思考
1.短小易懂、形象生动(作用:增强新闻的简洁性和可读性, 调解美化版面节约篇幅)。
2. Cambodia’s Duch is found guilty
轻松写作
A
①They are working hard.
He is studying hard.
The train arrives late.
The plane flies quickly.
The boy tried again and again.
He tried again and again.
②We won the match.
She passed the exam.
The workers finished the work ahead of time.
The students completed the exam ahead of time.
I forgot to mail the letter yesterday.
She forgot to buy the book last week.
He stopped crying suddenly.
They stopped fighting suddenly.
③My father gave me a new bicycle.
My mother bought me a new dress.
I’ll buy you a car like that.
My mother will give me a pen like that.
④He is a university student.
She is a college student.
The light is still on.
The shop is still open.
The match is exciting.
The film is moving.
⑤I helped the boy find his mother.
He helped me finish the work.
They want me to become a teacher.
My parents want me to became a doctor.
I made it a rule to read English in the morning.
I made it a rule to get up early in the morning.
B
Despite the fact that…; not only…,
(1)By air 做飞机
I used to travel by air a great deal when I was a boy. My parents used to live in South America and I used to fly there from Europe in the holidays.
A flight attendant would take charge of me and I never had an unpleasant experience. I am used to travelling by air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowly gaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again.
(2)If the weather is good, maybe I’ll go to self-study, may see the English, also may view bar, or watch ZaShu, will also look at the newspaper, but anyway, all want to believe that the weather is not good.
如果天气好,也许我会去自习,可能看英文,也可能看法条,或者看杂书,也会看看报纸,但是不管怎样,都要坚信天气不会好的。
C
My Last School Trip(1)
I had a pleasant school trip last weekend. We went to the Sea Museum by bus. It took an hour to get there and once we were there we took pictures in front of the gate .The pictures were very beautiful. Then we went inside and visited the museum. We also went to the 4d theater and watched an exciting movie.
My Last School Trip(2)
We have been to Taiwan. I was excited about it and planned a lot.Unfortunatly, there was a typhoon come to there, We should stay at the hotel. Watching the boring TV. The planning we had planned, has been canceled.
So we had a terrible school trip.
My Last School Trip(3)
We have been to Guangzhou. I was so pleased that I can’t fall asleep the night before my lasy school trip. However, Guangzhou was rainy. If it keep raining, we must stay at the hotel.But luckily, two hours later, the sun was shining. I could go out to play!
I had a great fun in Guangzhou.
D
Dear Li Hua:
You’ve mentioned that you felt bad about telling lies. That means you understand your parents, it’s really a good thing. Sometimes parents just figure that internet game is terrible, they just don’t want their child spend all the time for games , not study. I think the most important thing you should do is make your parents know some advantages about internet games,such as it can make you relax after study ,things like that.By the way ,you should also ensure that you can make good use your time.
Editor
初中生暑假 学习计划
每日上午具体安排:
第一,语文暑假作业两页;
第二,数学暑假作业两页;
第三,小区院里玩两小时;
第四,专心读一小时故事书;
第五,摘抄 好词好句 ,记录在自己的摘抄本上。
每日下午具体安排:
第一,注音、 组词 ,并造五句子;
第二,读一小时漫画书或科普书;
第三,写一篇博文,并告诉爸爸快修改,以免“丢丑”;
第四,用qq和爸爸聊天,探讨博文得失和当日学习情况;
第五,细心做爸爸精选或针对性出的十道数学题,并先要自己判对错,再和他一起研究破题、审题、解题、纠错、举一反三的 方法 。
这就是我给自己这个假期定的生活学习计划,生活学习两不误,当然这是指一般情况。期间,我还的回奶奶家、姥姥家各一趟,去看看他们老人家。爸爸说这也是任务。那几天,估计我的计划就不能正常执行了。
初中 学习方法
听课时,要眼耳手并用
初中学习不再同小学学习那样,上课只靠认真的听讲就行的,毕竟初中的课程难度增加了,在上课听讲的时候要眼耳手并用,认真听老师上课所讲的内容,准备一个课堂 笔记本 ,要勤动手,养成做笔记的好习惯,单纯的靠听是不行的,随时记下老师讲的重点,下课后翻阅笔记再回顾一下老师所讲的内容有无掌握。
做笔记时,要全面具体
做知识点笔记时,要做得全面具体,这样在翻查笔记的时候,能够复习到多个知识点,达到事半功倍的效果。
学会 总结 考试知识点
看到一个题目时,先不要着急,首先分析一下题目所考的是哪一个知识点,做到心中有数,再进行相应的回答。其次,就是在学习的时候自己要多注意总结,比如说,数学常考的图形问题,先总结出考试一般都考哪几种题型,每一种题型都有哪些解题方法,这样在考试中再遇到这种题型就不会烧脑不知所措了。
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