【www.myl5520.com--数学教案】
2017七八年级寒假作业清单
篇一:2017八年级寒假答案
太康县世纪新星学校 七八年级
年级班 姓名：
2017年七八年级（上）寒假作业清单
关心孩子的成长过程比关心孩子的结果更重要。
2017年八年级上数学寒假作业
篇二:2017八年级寒假答案
八年级数学寒假作业（3）
一、选择题（本大题共10小题，每小题3分，共30分，在每小题给出的四个选项中，只有一项是符合题目要求的，把答案填在答题卷中） 1．下列实数中是无理数的是( ) A．0.38 B．
C．
D．﹣
2．在平面直角坐标系中，点P（5，﹣3）在( ) A．第一象限 B．第二象限 C．第三象限 D．第四象限 3．估计+3的值( )
A．在5和6之间 B．在6和7之间 C．在7和8之间 D．在8和9之间 4．在下列各组数据中，不能作为直角三角形的三边边长的是( ) A．3，4，6 B．7，24，25 C．6，8，10 D．9，12，15 5．下列各组数值是二元一次方程x﹣3y=4的解的是( ) A．
B．
C．
D．
A
．平均数
B．中位数 C．众数 D．平均数与众数 7．下列命题是真命题的是( ) A．两个锐角之和一定是钝角
2
B．如果x＞0，那么x＞0
C．两直线平行，同旁内角相等
D．平行于同一条直线的两条直线平行 8．下列各式中，运算正确的是( ) A．a6÷a3=a2 B．= C．（a3）2=a5 D．2+3=5
9．在平面直角坐标系中，已知一次函数y=kx+b的图象大致如图所示，则下列结论正确的是( )
A．k＞0，b＞0 B．k＞0，b＜0 C．k＜0，b＞0 D．k＜0，b＜0
10．如图，在△AOB中，∠B=20°，∠A=30°，将△AOB绕点O顺时针旋转60°，得到△A′OB′，边A′B′与边OB交于点C（A′不在OB上），则∠A′CO的度数为( ) A．70° B．80° C．90° D．100°
二、填空题（本大题共6小题，每小题4分，满分24分） 11．
=__________．
12．方程组的解是__________．
13．如图，字母A所代表的正方形的面积是__________．
13题 14题 16题
14．如图，BC⊥AE，垂足为C，过C作CD∥AB，若∠ECD=48°．则∠B=__________度． 15．点A（3，y1），B（﹣2，y2）都在直线y=﹣2x+3上，则y1与y2的大小关系是y1__________y2． 16．在一次“寻宝”游戏中，“寻宝”人找到了如图所示的两个标志点A（2，3）、B（4，1），已知AB两点到“宝藏”点的距离都是，则“宝藏”点的坐标是__________． 三、解答题（一）（本题3小题，每小题6分，共18分） 17．化简：
﹣3×
+
+（π+1）0
18．在如图的方格中，每个小正方形的边长都为1，△ABC的顶点均在格点上．在建立平面直角坐标系后，点B的坐标为（﹣1，2）．
（1）把△ABC向下平移8个单位后得到对应的△A1B1C1，画出△A1B1C1，并写出A1坐标是__________．
（2）以原点O为对称中心，画出与△ABC关于原点O对称的△A2B2C2，并写出B2坐标是
__________．
19．某广告公司欲招聘广告策划人员一名，对A，B两名候选人进行了三项素质测试，他们的各项测试成绩如表所示：根据实际需要，公司将创新、综合和语言三项测试得分按4：3：1的比例确定两人的测试成绩，此时谁将被录用？
四、解答题（一）（本题3小题，每小题7分，共21分） 20．如图，小明将升旗的绳子拉到旗杆底端，并在绳子上打了一个结，然后将绳子拉到离旗杆底端5米处，发现此时绳子底端距离打结处约1米，请算出旗杆的高度．
21．医院用甲、乙两种原料为手术后的病人配制营养品，每克甲种原料含0.5单位的蛋白质和1单位铁质，每克乙种原料含0.7单位的蛋白质和0.4单位铁质．若病人每餐需要35单位的蛋白质和40单位铁质，那么每餐甲、乙两种原料各多少克恰能满足病人的需要？
22．请写出命题“等角的余角相等”的条件和结论；这个命题是真命题吗？如果是，请你证明；如果不是，请给出反例．
五、解答题（三）（本题3小题，每小题9分，共27分） 23．如图，已知：点P是△ABC内一点． （1）说明∠BPC＞∠A；
（2）若PB平分∠ABC，PC平分∠ACB，∠A=40°，求∠P的度数．
24．如图，直线l1：y1=2x﹣1与直线l2：y2=x+2相交于点A，点P是x轴上任意一点，直线l3是经过点A和点P的一条直线． （1）求点A的坐标；
（2）直接写出当y1＞y2时，x的取值范围；
（3）若直线l1，直线l3与x轴围成的三角形的面积为10，求点P的坐标．
25．如图，C为线段BD上一动点，分别过点B、D作AB⊥BD，ED⊥BD，连接AC、EC，已知AB=5，DE=1，BD=8，设CD=x
（1）用含x的代数式表示AC+CE的长；
（2）请问点C满足什么条件时，AC+CE的值最小？ （3）根据（2）中的规律和结论，请构图求出代数式
+
的最小值．
八年级（上）数学寒假作业答案
一、选择题（本大题共10小题，每小题3分，共30分，在每小题给出的四个选项中，只有一项是符合题目要求的，把答案填在答题卷中） 1．下列实数中是无理数的是( ) A．0.38 B．
C．
D．﹣
【考点】无理数．
【分析】无理数就是无限不循环小数．理解无理数的概念，一定要同时理解有理数的概念，有理数是整数与分数的统称．即有限小数和无限循环小数是有理数，而无限不循环小数是无理数．由此即可判定选择项．
【解答】解：A、0.38是有理数，故A错误； B、C、D、﹣
是无理数，故B正确； 是有理数，故C错误； 是有理数，故D错误；
故选：B．
【点评】此题主要考查了无理数的定义，其中初中范围内学习的无理数有：π，2π等；开方开不尽的数；以及像0.1010010001…，等有这样规律的数．
2．在平面直角坐标系中，点P（5，﹣3）在( ) A．第一象限 B．第二象限 C．第三象限 D．第四象限 【考点】点的坐标．
【分析】根据各象限内点的坐标特征解答． 【解答】解：点P（5，﹣3）在第四象限． 故选D．
【点评】本题考查了各象限内点的坐标的符号特征，记住各象限内点的坐标的符号是解决的关键，四个象限的符号特点分别是：第一象限（+，+）；第二象限（﹣，+）；第三象限（﹣，﹣）；第四象限（+，﹣）．
3．估计+3的值( )
A．在5和6之间 B．在6和7之间 C．在7和8之间 D．在8和9之间 【考点】估算无理数的大小． 【专题】常规题型．
+3的近似值． 【分析】先估计的整数部分，然后即可判断
【解答】解：∵42=16，52=25， 所以，
+3在7到8之间． 所以
故选：C．
2016-2017学年第一学期初二英语寒假复习专题《完形填空》含答案
篇三:2017八年级寒假答案
2016-2017学年第一学期初二英语寒假复习专题《完形填空》
（1）
Today，the Internet is used in nearly every field of life．Does the Internet play an important part in education? Let us take a look at it in detail．
√School Projects
．As the Internet is an ocean of information， ．Going through the information on the than reading a book on the subject．Homework is also made easier with the help of the Internet，． √News
All the latest news is often updated on the Internet on news sites．Students learning politics，the Internet at school，at home，or at any other places．
√Online Learning
With the Internet，short-term courses online，learn，and give exams．People from any part of the world can gain (获取on different subjects．
√No Age Bracket (范围) for Education
，according to their liking and wish．You are，now，． With these points，we find that the Internet is so important in education．However，it is only ，or keep a watch on their surfing．
1．A．common B．dangerous C．useful D．traditional
2．A．nearly B．hardly C．already D．simply
3．A．harder B．worse C．faster D．slower
4．A．who B．what C．whose D．which
5．A．across B．through C．without D．beside
6．A．take up B．pick up C．get up D．put up
7．A．experience B．pleasure C．money D．knowledge
8．A．ages B．safety C．choice D．habits
9．A．and B．or C．but D．so
10．A．silly B．busy C．wise D sure
（2）
When the girl was very little，her father would pick her up，sing a song and dance with her，and he would told her，“，little girl．”
the great man would hug (拥抱)
her and tell her，“I love you，little girl．”The little girl would say，
“I'm not a little girl anymore．”Then the man would laugh and
say，“But to me，．”
Later the girl left her home and went into the world．As she
learned more ，she learned more about the man．
She
because he could express his love to his family．Wherever she was．her and say，“I love you，little girl．”
a stroke (中风)．He couldn't talk anymore．He could no longer smile．1augh，walk，hug，．
The girl went to her father's side．，but he could not．Tears ran ．And to her surprise．his father's heart beat out the words that his mouth could no longer say：I love you，little girl!
1．A．know B．1ove C．hate D．see
2．A．coming up B．going out C．growing up D．getting up
3．A．boy B．son C．friend D．girl
4．A．herself B．her C．she D．hers
5．A．great B．busy C．free D．strict
6．A．ask B．tell C．call D．order
7．A．took B．was C．kept D．had
8．A．and B．or C．then D．so
9．A．1ooked at B．1ooked for C．found D．found out
10．A．all B．both C．either D．neither
（3）
When I was 7，my family made me an ant farm．First，we put
clean sand in a thin glass box．．
After the ants were dropped into the glass farm，they got down
to making tunnels (隧道)．I was amazed that each one knew exactly
．．
things happened to the ant farm．I had put
my face so close to the glass farm that I tipped it over (弄翻它)．Although the ants survived (幸存) their earthquake，one by one they began to die．I was scared as I watched ．
．They simply could not stand that their tunnels were gone．
much time has passed，I still think of that ant farm．Over the years，I came to realize the importance of teamwork．Working together，the ants were able to make an amazing world for themselves．．
But there was an even larger lesson that I did not realize until recently：Bad situations are a natural part of life，and must be accepted．We have to realize that if a tunnel is gone，we just have I will remember this forever.
1．A．get B．arrive C．reach D．go
2．A．why B．how C．what D．when
3．A．its B．his C．her D．their
4．A．surprising B．good C．amazing D．bad
5．A．flew away B．fell down C．stood up D．broke away
6．A．building B．searching C．1eaving D．decorating
7．A．loneliness B．hurt C．sadness D．
tiredness
8．A．If B．Although C．When D．Even
9．A．courage B．confidence C．worry D．effort
10．A．other B．the other C．another D．others
（4）
A rich man asked a wise old man how to make his son give up his bad habits．The old man a walk through a garden．He stopped suddenly．the boy to pull up a small plant growing there．．The old man then asked him to pull up a little bigger plant．The boy pulled hard，．
“Now pull up that one，”said the old man．The boy did his best，and pulled
“Now take this one out，”said the old man，pointing to a big tree． around the tree and tried to pull it up．He couldn't pull it this time．
“It's impossible．”said the boy．He was tired．
“as your bad habits，”said the old man．“When they're young，it's easy to pull them up，when they grow up you can't uproot (根除) them so easily．
These words changed the boy's life．
1．A．with B．for C．in D．at
2．A．kept B．1et C．made D．asked
3．A．hard B．happily C．easily D．sadly
4．A．work out B．put out C．turn out D．came out
5．A．pointing to B．1ooking at C．comparing with D．finding out
6．A．really B．firstly C．finally D．hardly
7．A．feet B．arms C．hands D．1egs
8．A．succeeded B．failed C．complained D．fell
9．A．the same B．different C．unusual D．interesting
10．A．and B．or C．but D so
（5）
Whenever the sun rose and the blue sky came up，my father and I
used to climb the mountain near my house．Walking together，my father
and I used to have a 1ot of conversations through which I
from his experiences．He always told me，“goals like
climbing the mountain．”Without the mountain-climbing that we both
we couldn't have enough time to spend together，because my father
I really got a lot from the mountain-climbing．It gave me
develop my patience．
Once we climbed a very high mountain．I was only ten years old．During the first few hours of climbing，I enjoyed the flowers and trees，and the bird's singing．But as time passed，I got pains in both of my legs．climbing．But my father said to me，“You can always see a beautiful sky at the top of the mountain，but you can't see reaching the top．Only there can you see all of the nice things，which is just like your life．”
At that time，．But later after that，I got to know the meaning of hope in life．I found myself standing at the top of the mountain，and the sky was as clear as crystal (水晶)．
1．A．classes B．tests C．1essons D．news
2．A．can B．may C．would D．should
3．A．spent B．enjoyed C．hoped D．kept
4．A．busy B．1azy C．weak D．free
5．A．play B．work C．talk D．study
6．A．as much as B．as soon as C．as long as D．as well as
7．A．though B．because C．and D．but
8．A．put up B．take up C．get up D．give up
9．A．after B．when C．before D．since
10．A．stories B．words C．pictures D．1essons
（6）
Today we buried our 20-year-old son．in an accident on Friday night．How I wish I had told him：“Jim，I love you，and I'm so proud of you．”I would have taken time to appreciate (欣赏) his beautiful smile，of his laughter and his true love of people．
，you forget about the radio that was always too loud．the haircut that wasn't to our liking，socks under the bed．It really doesn't matter much now． ，but you have
Tell your family and friends what you would want them to hear if you knew it would be your last talk．．He called me to say：“Hi，Morn! I ．Got to go to work．Bye．”He gave me something to treasure (珍视) forever．
，maybe it is to make others appreciate more of life and to make people，especially familiesthe time to let each other know just how much they care．
You may never have another chance．Do it today!
1．A．saved B．injured C．killed D．hurt
2．A．1ook B．sound C．voice D．noise
3．A．make of B．think of C．tell of D．hear of
4．A．clean B．thick C．long D．dirty
5．A．talk B．tell C．speak D．say
6．A．1uck B．advice C．offer D．chance
7．A．1ast B．first C．second D．usual
8．A．for B．in C．to D．of
9．A．diary B．smile C．death D．1aughter l 0．A．take B．pay C．spend D．cost
（7）
Ladies and gentlemen，
Thank you very much for coming to this concert．I hope you have enjoyed the music．2017八年级寒假答案。
The purpose of this concert is money for children in Africa．Every children in Africa die．There are two main reasons for this．First，there are no jobs for the children's parents，so they have no money ．Second，to take care of poor people．
Most African countries are poor．bad for farming．The organization we are trying to help，the Feed Africa Fund，spends a lot of —kind and generous (慷慨，大方) people who do not want to see children die from hunger．Just one ．
How much do you spend on food every day? Ten dollars ? Twenty dollars ? I am sure you can spend a your own food so that you have a few dollars for the Feed Africa Fund．
Ladies and gentlemen．we will now take a collection．Please be generous．Thank you．
1．A．borrow B．raise C．pay D．1end
2．A．hundred B．hundred of C．hundreds of D．thousand
3．A．because B．so C．therefore D．why
4．A．eat B．sleep C．play D．drink
5．A．clothes B．medicine C．houses D．toys
6．A．many B．much C．few D．1ittle
7．A．rain B．weather C．sun D．moon
8．A．and B．as C．1ike D．of
9．A．feed B．build C．develop D．organize
10．A．more B．few C．1ess D．1ittle
（8）
Last spring I was walking in a park．A short distance ahead of me was a mom and her ．The little girl was holding a string (细绳) that was attached to a helium balloon．
All of a sudden，．I thought she would scream and cry．
But，，
she cheerfully shouted，“Wow!”
I didn't realize it at that moment．But that little girl had taught me
．
Later that day．phone call from a person with news of an
unexpected problem．I felt like saying，“Oh no，what should we do?”But
．I found myself saying：“Wow，that's interesting! How
can I help you?” One thing's for sure—life's always going to put balance with things we don't expect．However，how we respond (反应We can choose to be frustrated or fascinated (着迷的)．
No matter what the situation is，a fascinated“Wow!”Oh，no．
”
2016-2017学年度第一学期八年级上学期期末考试语文试题及答案
篇四:2017八年级寒假答案
名
姓
题
答
要班级
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外
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考 2016—2017学年度第一学期期末检测试卷 八年级语文 A卷（100分） 一、积累与运用（30分） 1.阅读下面的语段，根据拼音写汉字或给加点字注音。（2分） 亲爱的同学，如果把这份试卷比作一片蔚蓝的天空，你就是那翱．翔（ ）的雄鹰；如果把这份试卷比作一片碧绿的草原，你就是那奔chí（ ）的骏马。请自信地拿起你手中的笔，尽情施展你的才华，也许你会比雄鹰飞得更高，比骏马跑得更快。 2.下列词语中加点字读音有误的一项是（ ）（2分） A.惟妙惟肖．(xiào) 绮．丽(qǐ) 憎．恨(zēng) 两栖．(qī) B.销声匿．迹(nì) 愧怍．(zuó) 琐屑．(xiâ) 追溯．(sù) C.风雪载．途 (zài) 蹒跚．．(pán shān) 褶．皱(zhě) 震悚．(sǒng) D.日薄．西山(bó) 箱箧．(qiâ) 殷．红（yān） 绥．靖(súi) 3.请根据具体的语境和拼音写出汉字。（4分） ①父亲明明该高兴，却露出些gān gà ( )的笑。 ②历史、现实，在雨中融合了——融成一幅悲哀而美丽、真实而荒miù（ ）的画面。③一个物种在新的环境中必然遵循物jìng( )天择的法则 ④有一个信客，年纪不小了，已经长途bá shâ( )了二三十年。 4.下列句子中加点词语使用有误的一项是（ ）（2分） A.各级政府应该加大力度，因地制宜．．．．的发展地方农村经济，增加农民收入。 B.巴勒斯坦的斯瓦特被誉为“东方的瑞士”，但“9.11”事件以后，来这里旅游的人几 乎是凤毛麟角．．．．。 C.玉雕作品“翠玉白菜”因其材质上乘，惟妙惟肖．．．．，富有创意而被誉为我国的国宝。 D.看着他瘦骨嶙峋．．．．的样子，母亲的眼角湿润了。 5.下列句子没有语病的一项是（ ）（2分） A.三峡以其绮丽的地形、险峻的风光、磅礴的气势闻名遐迩，成为世界著名的旅游胜地。 B.无论哪一家报刊，对于读者来稿都是以文章质量高低来决定文章的录用。
C.宽带网不仅能浏览信息，收发电子邮件，还可以提供网上视频点播和远程教学等智
能化、个性化。
D.生命的美丽不仅是活着的形态，更是活着的精神。
6.下列句子中说法错误的一项是（ ）（2分）
A.记叙文的主要表达方式是叙述和描写，但议论和抒情在记叙文中也经常运用。
B.说明文是客观的说明事物、阐明事理的一种文体。常见的说明顺序有三种：时间顺
序，空间顺序和逻辑顺序。
C.说明文的结构一般有两种：总—分式和总—分—总式。事物说明文大都用前者，事
理说明文大都用后者。
D.新闻的导语是新闻开头的第一段或第一句话，它简明扼要的揭示新闻的核心内容。
7.下列关于文学常识说法有误的一项是（ ）（2分）
A.《爱莲说》是北宋哲学家周敦颐写的一篇短文。“说”是古代一种文体，可以叙事，
可以描写，可以议论，其目的都是为了说明一个道理。
B.“记”是古代一种叙事的文体。如东晋诗人陶渊明的《桃花源记》和清朝人魏学伊
的《核舟记》。前者记叙了渔人游桃花源，后者记叙了王叔远送给作者的一只核舟。
C．杜甫是唐代的大诗人，他的诗作在总体上反映了唐王朝由盛转衰的变化过程，号称
“诗史”。他和李白并称为“李杜”。
D.《礼记》，是儒家经典之一，由西汉戴圣辑录、编纂而成，共49篇。
8.下面这副对联的下联与别的对联弄混了，请你运用对偶知识判断下列诗句哪一句是这副对
联的下联?( 2分)
对联：凌云劲竹真君子，_______________________________________。
A.野泉声入砚池中 B.清香移在菊花枝 C.梅梢月斜人影孤 D.空谷幽兰绝美人
9.仿照例句的句式，在后面的横线上再补写一个句子。（2分）
你有权憧憬未来，但不应该忘记眼前的责任；你有权争取成功，但不应该以牺牲他人为代价：
__________________________________________________________________________。
10.默写。（10分）
（1）谁道人生无再少？门前流水尚能西！ 。（《浣溪沙》）
（2）日暮乡关何处是？ 。（《黄鹤楼》）
（3）出淤泥而不染， 。（周敦颐《爱莲说》）
（4）何夜无月？何处无竹柏？ 。（《记承天寺夜游》）
（5）晴空一鹤排云上， 。（刘禹锡的《秋词》）
（6）《桃花源记》中描写老人和小孩神情的诗句是： ， 。
（7）日有所思，夜有所梦“ ，铁马冰河入梦来”就是爱国诗人陆游
垂暮之年不忘收复失地、统一祖国的梦境，读来令人荡气回肠。
（8）前几年，举世瞩目的三峡工程成功实现“蓄水315米”，“高峡出平湖”的壮观景象