冀教版八

1、 9 （1） 2 7 4 = ？ （2） 1 3 2 5 = ？ ?) 1 ( y x n m ?)2( y x n m 两个分式相乘两个分式相乘,把分子相乘把分子相乘 的积作为积的分子的积作为积的分子,把分母把分母 相乘的积作为积的分母；相乘的积作为积的分母； 两个分式相除两个分式相除，把除式的，把除式的 分子和分母颠倒位置后再分子和分母颠倒位置后再 与被除式相乘与被除式相。

2、2020-2021 学年冀教新版八年级上册数学第学年冀教新版八年级上册数学第 14 章章 实数单元测试卷实数单元测试卷 一选择题一选择题 1 在1.414， ， 2.010101 （相邻两个 1 之间有 1 个 0） ， 2+ ， 这此数中， 无理数的个数为 （ ） A5 B2 C3 D4 2在实数 |1|，0.1414，0.1010010001（两个 1 之间依次 增加 1 个 。

3、18.3 数据的整理与表示第 1 课时条形统计图和扇形统计图练习 一、选择题12018杭州某校九(1)班的全体同学最喜欢的球类运动用如图 K31 所示的统计图来表示，下面说法正确的是( )图 K31A从图中可以直接看出喜欢各种球类的具体人数B从图中可以直接看出全班的总人数C从图中可以直接看出全班同学初中三年来喜欢各种球类的变化情况D从图中可以直接看出全班同学现在最喜欢各种球类的人数的大小关系2嘉嘉把自己一周的支出情况用如图 K32 所示的统计图来表示，则从图中可以看出( )图 K32A一周支出的总金额B一周各项支出的金额C各项支出金额在一周中。

4、18.3 数据的整理与表示第 2 课时折线统计图及其综合练习一、选择题1要反映红星制衣厂男、女职工比例的情况，最好选择用( )A条形统计图 B折线统计图C扇形统计图 D以上三种都可以2图 K41 是某商厦销售天堂雨伞的情况，从折线统计图中我们可以看出雨伞销售量最大的季度是( )图 K41A第一季度 B第二季度C第三季度 D第四季度3正常人的体温一般在 37 左右，但一天中的不同时刻不尽相同图 K42 反映了一天 24 小时内小明体温的变化情况，下列说法错误的是( )图 K42A清晨 5 时体温最低B下午 5 时体温最高C这天中小明体温 T()的范围是 36.5T37.5D从清。

5、18.4频数分布表与直方图练习 一、选择题1下列说法正确的是( )A频数是表示所有对象出现的次数B频率是表示每个对象出现的次数C所有频率之和等于 1D频数和频率都不能够反映每个对象出现的频繁程度2图 K51 是八(1)班 45名同学每周课外阅读时间的频数分布直方图(每组含前一个边界值，不含后一个边界值)由图可知，人数最多的一组是( )图 K51A24 小时 B46 小时C68 小时 D810 小时3一次数学测试后，某班 40名学生的成绩被分为 5组，第 14 组的频数分别为12，10，6，8，则第 5组的频率是( )A0.1 B0.2 C0.3 D0.442017栾城期中为了解某中学 300名男生。

6、18.2 抽样调查练习 一、选择题12017迁安期末下列调查中，适合采用全面调查(普查)方式的是( )A调查一批新型节能灯泡的使用寿命B调查长江流域的水污染情况C调查某市初中学生的视力情况D为保证“神舟号”的成功发射，对其零部件进行检查2为了了解某中学八年级 800 名学生的视力情况，从中随机抽取了 30 名学生进行调查，在此次调查中，样本容量为( )A800 B30C800 名学生的视力 D30 名学生的视力32017青岛期末某市今年共有 7 万名考生参加中考，为了了解这 7 万名考生的数学成绩，从中抽取了 1000 名考生的数学成绩进行统计分析，以下说法正确。

7、冀教版八年级英语下册 Unit 3阶段能力训练（Lessons 1315）.完形填空Many people across the world have pets. You may have one, and_1_ some of your friends do, too. A pet can be a special _2_ and you might also think of him as a member of the family. A pet can play with you or just be with you when you dont _3_ like talking._4_， pets cant stay with us forever. _5_ all other living things, they will die. Sometimes a pet gets too sick _6_. Even an animal doctor cant save him. Youll be _7_ 。

8、冀教版八年级英语下册 Unit 1阶段能力训练（Lessons 13）. 2018安徽完形填空When the Spring Festival falls，red flowers bloom (盛开) on the windows of my home. Of course, these are not _1_ flowers. But in the cold of _2_， these wonderful flowers bring warmth to us. They are made of paper by my _3_， who is now aged 70. With a few cuts, she _4_ a piece of paper into a beautiful work of art.When my grandma was young, she was considered clumsy(笨拙的) in the _5_. But on a cold winter night, she saw som。

9、冀教版八年级英语下册 Unit 8阶段能力训练（Lessons 4648）.完形填空Of all the things we eat and drink, water is the_1_ important. The human body can go_2_ food for a long time, but two_3_ three days without water could make people _4_. A lot of people dont understand how_5_ water the human body needs_6_well and many people dont drink enough， especially in_7_weather. Most people drink_8_they are thirsty but in fact they need more water，especially when they take_9_. 65 to 75 percent of a ma。

10、冀教版八年级英语下册 Unit 6阶段能力训练（Lessons 3436）. 完形填空Almost everyone knows about the Olympic Games. But not _1_ people know how they started, why they once stopped and when China took part in the Olympics. People _2_ the first Olympic Games in Greece(希腊) in 776 BC. They held the Olympics _3_ four years in summer. The first Olympics _4_ for only one day and there was only one contest(比赛). It was a short race. Only Greek men could _5_ in the race. Women and nonGreeks couldnt _6_ th。

11、冀教版八年级英语下册 Unit 7阶段能力训练（Lessons 3739）.完形填空Greenland is the largest island in the world. It is in the _1_ of Europe. Near Greenland is another island. It is small. Its_2_ is Iceland. Do you think that Greenland is green and warm? Do you think that Iceland is white with ice? If you do, you are_3_. Not many people live on the big island of Greenland. There _4_ more people in your hometown than in all of Greenland. That is because Greenland is not green. Greenland is _5_. Most 。

12、冀教版八年级英语下册 Unit 4阶段能力训练（Lessons 1921）.完形填空The computer is a very wonderful machine, and it is so _1_ today that it seems we _2_ live or work without it. Computers are used in many_3_in offices, in factories, in big shops, at schools, and even at home. With the computer, people are living a better _4_. The computer is one of the greatest inventions in the _5_ century. The first computer was built in America which was named Eninc, and it was not only very_6_， but also quite 。

13、冀教版八年级英语下册 Unit 3阶段能力训练（Lessons 1618）.2018德阳完形填空In July，little Helen always goes to see her grandfather. He lives on the farm. On the farm, there are many kinds of _1_， such as cows, dogs, cats and sheep. She likes to play with them _2_ they can make her happy. On the farm, there is also a little _3_. It has no mother and it _4_ plays with other animals. It often _5_ around alone. This is why Helen likes it. Helen likes it so much that many times she _6_ the elephant ho。

14、冀教版八年级英语下册 Unit 1阶段能力训练（Lessons 46）.完形填空_1_ the four seasons, I like summer very much. In _2_， although you can see a lot of beautiful flowers, there _3_ too much wind. So I dont like it. _4_ autumn the weather is a little cool and the_5_ fall off. The most important reason that I dont like autumn_6_ the view in autumn. It looks so dreary. Winter is a very _7_ season, and you need_8_ more clothes when you go out. In winter I can skate. So I like winter. But I prefer s。

15、冀教版八年级英语下册 Unit 2阶段能力训练（Lessons 1012）.完形填空Once there was a lovely vegetable field with a very big tree in it. Both the vegetables and the tree made the garden look wonderful.In fact, the vegetables and the tree couldnt get on well with_1_. The vegetables disliked the tree because they thought the tree didnt leave them enough _2_ by covering them with its thick leaves, while the tree thought that the vegetables drank nearly all the water before it could reach him.The situati。

16、冀教版八年级英语下册 Unit 7阶段能力训练（Lessons 4042）.2018温州 阅读理解Bath, 97 miles west of London, is the largest city in Somerset, England. It became a World Heritage Site in 1987.The city got its name from the Roman Baths, which was a place for public bathing in Roman Britain. The water there is naturally heated under the ground. Today visitors are no longer allowed to enter the water. However, the exhibitions there will tell you the history of the Roman Baths. You can see many ancient Ro。

17、冀教版八年级英语下册 Unit 6阶段能力训练（Lesons 3133）.完形填空Swimming is very popular in summer. People like swimming in summer because water makes them _1_ cool. But if you swim in a _2_ place, it may not be safe. Last summer, more than ten people died while they were enjoying _3_ in the water and most of them were students. But some people are still not _4_ when swimming. They often think they swim so_5_ that nothing can _6_ to them in water. Summer is here again. If you go swimming in summe。

18、冀教版八年级英语下册 Unit 5阶段能力训练（Lessons 2527）.完形填空There will be a charity(慈善)show called “Sunshine for All” _1_ April 29. The show will be held at Beijing Sunshine Secondary School. We are organizing the show to raise money _2_ Project Hope. Project Hope helps build schools. It _3_ helps poor children go to school. We think its _4_ for children to learn to read and write. However, some children_5_ go to school because their parents are too poor. Their families have no money, so。

19、冀教版八年级英语下册 Unit 2阶段能力训练（Lessons 79）.完形填空Tom grows the nicest vegetables and fruits and the most beautiful flowers in the village. Plants grow in Toms garden all through the _1_ and they are much _2_ than the others.Tom cuts some flowers for his sitting room table, eats some fruits and vegetables, but he _3_ most of them in the market. His vegetables, fruits and flowers are so _4_ and beautiful that they are sold much more _5_ in the market than those of other villagers。

20、冀教版八年级英语下册 Unit 5阶段能力训练（Lessons 2830）.完形填空Bruce shook his money box again.Nothing! He carefully counted the coins that lay on the bed. All that he had was $24.52. The _1_ which he wanted was at least $90. How on earth(究竟) was he going to get the rest of the_2_？He knew that his friends all had bicycles. It was hard to hang out with people when you were the only one_3_ a bicycle. He thought about_4_ he could do. He couldnt get money from his parents, because he knew they h。

21、冀教版八年级英语下册 Unit 4阶段能力训练（Lessons 2224）.完形填空Nowadays, WeChat is becoming more and more_1_ in China. No matter where we are, we can sign up and send text or voice messages to our friends. We can also find a stranger to talk to by shaking the _2_. Another fun function(作用) is that WeChat can help to search for people who live nearby with the program on. Many people like this function, _3_ it can help them find more people.In my opinion, WeChat is really_4_ useful chatting tool。

22、小结与复习,第十九章 平面直角坐标系,要点梳理,考点讲练,课堂小结,课后作业,1.有序数对:,一、确定平面上物体的位置,0 1 2 3 4 5 6 7 8,(1,5) 表示点A的位置,A,列号写在前面,要点梳理,2.方位角和距离:,注意：采用“方位角和距离”来表示物体的方法要明确参照点.,1.平面直角坐标系,二、平面直角坐标系,2.各象限点的坐标的符号,(+,+),(-,+),(-,-),(+,-),三、坐标与图形的位置,建立坐标系常用的方法:,（1）以图形上的某已知点或线段的中点为原点； （2）以图形上某线段所在直线为x 轴（或y 轴）； （3）利用图形的轴对称性以对称轴为x 轴（或y。

23、小结与复习,第十八章 数据的收集与整理,要点梳理,考点讲练,课堂小结,课后作业,一、统计的初步认识,要点梳理,实际问题,搜集数据,整理数据,表示数据,统计分析,合理决策,1.统计的一般过程：,2.收集数据的方法,问卷调查、实地调查、查阅资料、实验、测量等,(1)为了某一特定目的而对 对象进行调查，叫做普查.,二、抽样调查,1.普查有关概念,全体,(2)所要考察对象的全体称为总体,(3)组成总体的每一个考察对象称为个体,2.抽样调查有关概念,(1)从总体中抽取一部分个体进行调查，这种调查方式称为抽样调查,(2)从总体抽取的_叫做总体的一个样本,一部。

24、小结与复习,第二十章 函数,要点梳理,考点讲练,课堂小结,课后作业,在一个变化过程中，可以取不同数值的量叫做变量，而数值保持不变的量叫做常量.,一、常量和变量的概念,要点梳理,二、函数,在某个变化过程中，有两个变量x和y.如果给定x的一个值，就能相应地确定y的一个值，那么，就称y是x的函数(或者说y与x具有函数关系).其中，x叫做自变量.,1.函数的概念,2.在研究函数问题时，自变量的取值范围应注意以下两点：（1）自变量的取值要符合实际问题.（2）自变量的取值要使函数表达式自身有意义.,三、函数的表示,表达式、数值表和图像,1.函数关。

25、小结与复习,第二十一章 一次函数,要点梳理,考点讲练,课堂小结,课后作业,0,kx,1.一次函数与正比例函数的概念,2.分段函数当自变量的取值范围不同时，函数的表达式也不同，这样的函数称为分段函数.,要点梳理,第一、三象限,第一、二、三象限,第一、三、四象限,3.一次函数的图象与性质,第一、二、 四象限,第二、四象限,第二、三、 四象限,求一次函数表达式的一般步骤： （1）先设出函数表达式； （2）根据条件列关于待定系数的方程（组）； （3）解方程（组）求出表达式中未知的系数； （4）把求出的系数代入设的表达式，从而具体写出这个解析。