周练答案1

第1周大数的认识一、填空。

1. 5300906000读作（），它是由5个（），3个（），（）个十万和（）个千组成的。

2. 一万是（）个一百，100个（）是一亿。

3. 最高位是千万位的数是（）位数，一个七位数的最高位是（）位。

4. 一个数的亿位、万位和个位都是8，其余各位都是0，这个数写作（）。

5. 一个自然数“四舍五入”到万位约是20万，这个数最大是（），最小是（）。

6长江是亚洲第一大河，其流域面积、长度、水量都居亚洲第一。

长江全长约6300000米，流域面积为18058500平方千米。

6300000读作（），18058500读作（）。

7. 一个数由2个亿，7个百万，9个万和3个千组成，这个数写作（），读作（）省略万位后面尾数约是（）万。

二、判断。

1. 303006950读作三亿三百万六千九百五十。

（）2. 与万位相邻的数位是千位和十万位。

（）3. 所有的七位数都比八位数小。

（）4. 8953004000≈89亿。

（）5. 算盘的一颗上珠表示5，一颗下珠表示1. （）三、选择。

1. 下面各数中，一个0也不读的数是（）A .93000006B .9030600 C. 930060002. 最小的自然数是（）A. 0B. 1C. 没有3. 17□763≈18万，□里最小填（）A. 4B. 5C. 94. 改写成用“亿”作单位，近似数是20亿的数是（）A. 1945967000B. 200000000C. 20453090005. 在5和7之间添（）个0这个数才能成为五亿零七。

A. 6B. 7C. 8四、下面是五个国家的陆地面积，把面积按从大到小排顺序1. 用1,2,3,4,5,6,7,8,9这9个数字组成九位数，并且“四舍五入”后约等于9亿，最大的数是多少？最小的呢？（每个数字只能用一次）2. 最大的六位数是多少？最小的六位数数是多少？它们的差是多少？3. 光在真空中的传播速度约为每秒3亿米，光线从太阳传播到地球上大约需要8分钟，照这样计算，太阳和地球约相距多少千米?4. 一个密码由九个数字组成，而且这个密码的最高位和百万位上的数字都是最小的计数单位，千万位和万位上的数字都是6，亿位上的数字比百位上的数字小3，千位和十位上的数字都比最小的自然数大5，其余两个数位上的数字都是8，你能算出这个密码是多少吗？5.聪明题用6个9和6个0组成符合下列要求的十二位数。

【尚书堂秋季班】六年级周周练1星期一 聪明出于勤奋，天才在于积累3232323213131313323232505053232202321+++()()8243147101027225==+=-+=-x x x x x x 解：8407120237604076040=⨯=-=-+=x x x x x x x 解：星期二 书山有路勤为径，学海无涯苦作舟。

1、甲数和乙数的比是2︰5，乙数和丙数的比是7︰3，甲数乙数和丙数的比是（ 14:35:15 ）·2、有一推苹果， 4个4个地数余3个，5个5个地数余4个，6个6个地数余5个。

这堆苹果最少有（ 59 ）个。

星期三 成功＝艰苦劳动＋正确方法＋少说空话1、112的分子加上8，要使分数大小不变，分母应加上（ 44 ） 2、四个连续奇数的积是3465，这四个奇数各是多少？119753465⨯⨯⨯= 分别是5、7、9、11。

3、 植树节那天，六年级学生去植树，如果每人栽6棵，还剩下40棵树苗；如果每人栽8棵，就缺少40棵树苗。

这个年级共有多少人？树苗一共有多少棵？解：设六年级共有X 人。

6X+40=8X-40X=40树苗 6×40+40=280（棵）答：这个年级共有40人，树苗一共有280棵。

星期四 再多一点努力，就多一点成功．1、已知大正方形比小正方形边长多2厘米，大正方形比小正方形的面积大40平方厘米。

求大、小正方形的面积各是多少平方厘米？()cm 91441140=÷÷⨯⨯-小正方形边长为3cm 面积是28199cm =⨯大正方形边长为5cm 面积是21211111cm =⨯答：略。

2、一条长600米的环形跑道，小华每分钟行60米；王明每分钟比小华多行30米。

两人同时同地反向而行，求经过多少分钟两人可以相遇？()4306060600=++÷分钟答：略。

3、A+32=B ×43=C-51=D ÷54，把A 、B 、C 、D 按从大到小的顺序排列起来。

七年级下册英语周练1一、单项填空（每小题1分，计15分）1. In 2016, _____ China set April 24 as _____ country’s Space Day.A. a; theB. the; theC. the; /D. /; the2. -- What do you think of the sweater? -- The style is very _____. I’ll tak e it.A. comfortableB. colourfulC. popularD. expensive3. – Look, who is Jim waiting _____ the bus stop? -- Simon, his best friend, I guess.A. forB. atC. at forD. for at4. -- This T-shirt _____ your trousers well. Why not buy it? -- OK. Let me see if it _____ me well first.A. fits; matchesB. matches; fitsC. fits; fitsD. matches; matches5. -- Would you like _____ fruit after dinner? -- Thanks, but I seldom eat _____ fruit when I am full.A. any; someB. some; anyC. some; someD. any; any6. -- Who _______at the door, dad? -- Just a minute. See who it is through the hole first.A. knocksB. knockC. is knockingD. will knock7. -- ______ is the man in black over there? -- He is an engineer.A. WhoB. WhyC. WhatD. Which8. -- The price of a HUAWEI P40 Pro+ is too ________. -- Yes, good things always _________ much.A. expensive; takeB. expensive; costC. high; takeD. high; cost9. -- the number of the teachers in your school?-- More than 200, and a number of them are ________ teachers.A. How many is; womanB. What’s; womanC. What’s; womenD. How many are; women10. I usually go shopping ___ Saturday afternoon, but I will go fishing with my father ___ this Saturday.A. on; onB. in; inC. on; /D. in; /11. Amy is wearing _____ dress and looks very pretty.A. a silk beautiful yellowB. a yellow beautiful silkC. a beautiful silk yellowD. a beautiful yellow silk12. Lily is ______ in her room. She wants to be the most beautiful girl at the fashion show.A. getting togetherB. playing tricksC. dressing upD. having fun13. There' re_______ in the fridge. Let's go to the supermarket and buy them.A. some fruitB. few vegetablesC. a few eggsD. little meat14. The housework is ____ easy. You don't have to spend _______ time on it.A. too much; too muchB. too much; much tooC. much too; much tooD. much too; too much15. -- Kitty, how about going to the cinema at one o’clock this afternoon? -- ______. Will three o’clock be OK?A. Certainly, no problem.B. Sorry, I can’t make it.C. Sure, that’s not the point.D. Sorry, I am not free today.二、完形填空（每小题1分，计15分）A long time ago, there was a tiger in the forest. He was the king of the animals.One day the tiger asked a little cat to (16)_ how his palace was built. After a few hours, the little cat came back and said (17) the tiger, "My dear king, your palace is very large, tall and beautiful. " The tiger was very (18) to hear that. Several days later, the tiger said to a pig, "It's been days (19) the cat saw my palace. Now, you go and see (20) once again. " But when the pig came back, he said to the tiger, "My dear king, I thought that your palace is beautiful, but it (21) yourself only. "The tiger was very (22) when he heard what the pig said. "Why are the cat's and the pig's (23) not the same?" He said to (24) . He then asked an elephant to go to have a (25) . Before long the elephant returned and said to the tiger. "Oh, your palace is too small for you to live (26) , my king. "The king became very angry when he heard what the elephant said. Then he said to the animals, "Maybe you all tell (27) . You three have three ideas. I want to kill you. " Just at the moment, a fox came out to (28) the tiger. He asked the tiger himself to go and see it himself before killing them. The tiger (29) . After he saw the palace himself, he thought that their answers were all (30) . He said to the animals, "You should remember that to see with your own eyes is more important than only to hear others. "16. A. clean B. live in C. look after D. visit17. A. for B. to C. at D. about18. A. sad B. sorry C. angry D. happy19. A. since B. when C. before D. after20. A. her B. it C. him D. them21. A. fits B. thrills C. covers D. troubles22. A. excited B. interested C. surprised D. tired23.A. palaces B. answers C. excuses D. meanings24. A. himself B. the elephant C. the pig D. the cat25. A. meeting B. walk C. look D. rest26. A. over B. on C. by D. in27. A. the news B. the truth C. lies D. stories28. A. welcome B. stop C. thank D. kill29. A. jumped B. refused C. appeared D. agreed30. A. different B. easy C. strange D. right三、阅读理解（每小题2分，计20分）A31. What should you do before wearing a mask?A. Clean the metal piece.B. Clean the colored side.C. Wash your hands.D. Wash your face.32. How should you wear your mask?A. Put the metal piece over your eyes.B. Cover your mouth, nose and chin.C. Leave a gap on both sides.D. Touch the front of the mask.33. Where should you discard the mask?A. At your desk.B. Near others.C. In your schoolbag.D. In a closed bin.BAs Peter was flying towards the ship, he passed the crocodile. It had swallowed a clock that goes “tick, tick” inside it before. However, the clock wasn’t ticking then. Peter knew it must have stopped. He began ticking himself so that the other animals would think he was the crocodile and leave him alone. The crocodile, thinking that Peter had taken the clock, followed him. But when Peter reached the ship, Captain Hook believed the crocodile was coming to get him.Peter climbed over the side of the ship and went inside a room. He barked like a dog, and all the pirates were very afraid. Hook sent two pirates in to find out what the noise was, but they didn’t come back. Then he sent in the children. Inside, Peter set them free, and they prepared to fight.Peter ran out to meet Hook. “It is I, Peter Pan!” he cried.“Get him!” cried Hook.The pirates ran at Peter, and the lost boys ran forward to fight them. The pirates were stronger, but they were so afraid of the ticking and the noise of the dog that they didn’t fight well. At last only Hook was ready to fight. Peter came to fight him. For a long time, the two persons stood face to face.They began to fight. At last Peter hit Hook with his sword. Hook began to bleed. Hook kept on fighting, but he was not strong any more. He knew he was going to die. He ran to the side of the ship and jumped into the sea. He did not know the crocodile was waiting for him, as it no longer ticked. The crocodile swallowed him in one bite.34. Why did Peter tick himself at the beginning of the story?A. To follow the crocodile.B. To catch Captain Hook.C. To get away from other animals.D. To make the pirates feel afraid.35. Which is the right order of the following events?a. Peter passed the crocodile.b. Captain Hook jumped into the water.c. The pirates and the lost boys fought against each other.d. The crocodile had swallowed a clock that goes “tick, tick” inside it.A. c-b-a-dB. d-a-c-bC. d-c-a-bD. c-b-d-a36. What happened to Hook at the end of the story?A. He ran away safely.B. The lost boys killed him.C. Peter hit him with a sword.D. The crocodile swallowed himCEvery evening the young Fisherman goes out on the sea. He throws his nets into the water.When th e wind blows from the land, he doesn’t catch many fish. But when the wind blows fromthe sea, he catches lots of fish and he can sell them at the market.One evening the Fisherman’s net is very heavy. He thinks, “Are all the fish in the sea in mynet? Or i s there a monster in my net?” He pulls and pulls his net.There are no fish or monsters in his net. But there is a little Mermaid and she is sleeping.Her beauty makes the Fisherman very happy. He leans out of the boat. He takes the Mermaid inhis arms. She wakes up when he touches her. She cries like a seagull and she wants to escape（逃脱）.But the Fisherman holds the Mermaid in his arms.“Please free me,” the Mermaid cries, “I am the only daughter of the King. My father is old and alone.”“Make me a promise ,” says the Fisherman. “I can free you. But please come when I call you. You can sing to me and to the fish. Then my nets can always be full of fish.”“I promise,” cries the Mermaid.The Fisherman opens his arms and frees the frightened Mermaid. She swims down under the water.Every evening the Fisherman calls the Mermaid. And she comes and sings for him. But she doesn’t come near him. Her song and her voice are sweet to his ears. And the Fisherman forgets his nets and the fish. His eyes are full of love.37. The Fisherman can catch many fish when _________.A. the wind blows from the landB. the wind blows from the seaC. he throws the nets into the waterD. he throws the monster into the water38. The Mermaid tries to escape because _________.A. she wants to fly like a seagullB. the Fisherman wakes her upC. she wants to be with her fatherD. the Fisherman holds her in his arms39. What does the underlined word frightened mean? _________.A. Feeling afraid.B. Feeling tired.C. Feeling weak.D. Feeling excited.40. What can we infer (推断) from the last paragraph（段）? _________.A. The little Mermaid never comes back.B. The Fisherman loves to sing and dance.C. The monster catches the fish from the nets.D. The Fisherman falls in love with the Mermaid.四、词汇运用（每小题1分，计20分）41.Along the street, there are a lot of ____________ (餐馆).42.I did nothing____________（特别的）last weekend.43. The sunlight we all need ____________ (包括) seven different colours.44. There are no __________ (平坦的) roads to success. Never give up easily!45. Don’t eat too many ____________(汉堡). They can make you put on weight easily.46. He shows great interest in __________ (collect) stamps.47. Eating __________（health）food is very important in our daily life.48. The lazy cat is lying _____________ (comfortable) on the soft sofa.49. Young people like smart phones, but __________ (radio) are still old people's favourite.50. Are all the classmates in your class ___________(plan) how to spend the winter holiday at present?51. Would you please ______ (借) me your bike?52. Do you think______ (练习) speaking English is a good idea?53. It is ______ (真的) that we will have a 5-day holiday In May this year.54. --- How far is the nearest supermarket? ---It’s about five ______ (分钟) on foot.55.The dress looks beautiful ______ (穿着) Kate.56.---Can you buy me the first cup of bobble tea in the autumn now?---It’s 10:00 p.m. The shop is not ______ (open).57. ---Look, I______ (have) a beautiful dress for the party! --- I’m sur e you will look beautiful in it!58. I always have fun ______ (chat) with my classmates.59. ---It’s said that people will get COVID-19 vaccine for free!--- Good news! It is hopeful to save thousands of ______(life).60.My teacher makes us ______ (read) English every morning.五、任务型阅读（每小题1分，计10分）Though playgrounds are great places to have fun, you need to have fun without getting hurt. Here are some rulesyou should remember before you head to a playground.Getting ready to play★ Wear shoes to keep your feet safe. Don’t go barefoot（赤脚地）.★Don’t play on wet equipment.Wet equipment can be slippery and might lead to a fall.★Don’t play on broken equipment. Tell an adult if there is something wrong with any playground equipment. Slides★ Go down the slide, one person at a time.★Don’t go down the slide until the person in front of you has reached the ground and moved away from the slide.★ Never climb up the front of the slide. Someone might slide down and hit you.Climbing★ Climb stairs or steps slowly. Hold onto the handrails（扶手）.★ Use both hands when you are climbing.Swinging★ Sit down on the swings and slow down before getting off.★Be careful when you walk in front of a moving swing. You don’t want to get hit.If something goes wrong★ Sometimes things can go wrong. If someone gets hurt in the playground, ask an adult to give you a hand at once.Remember the above rules and they will help keep you safe and prevent accidents. Array六、缺词填空（每小题1分，计10分）The Happy Prince once lived in the palace happily. After he died, people in the town put him up h 71 in the town center as a statue. So he can see all the ugliness and unhappiness in the town. That makes him c 72 . Nobody can share his sadness until a swallow flies to the town.There is a poor woman sewing clothes for the rich. Her son is ill and l 73 on the bed, but she has only water to give him. Far across the city, there is also a young man. He is t 74 to finish writing a play, but he is too cold to write b 75 there is no fire in the room. And a little girl who sells matches drops them on the g 76 . No one will buy them and her father will hit her for that.The Happy Prince wants to h 77 these people. He asks the swallow to take the jewel from his sword and give it to the poor woman. Then he gives his two e 78 made of jewels to the young man and the little girl. And he has the swallow to see everything for him. Since he is covered with gold, he asks the swallow to give it to the p 79 in town.The Happy Prince has no heart now but he is k 80 and cares about people. The swallow feels quite warm because he does something good, although it is so cold. Their kindness enables the town to be a place full of laughter and happiness.七、句子翻译（每小题2分，计10分）81.城里有二十家餐馆。

小学一年级下学期苏教版周周练习题及答案（1-11周）第一周一、根据要求填空。

1.在○里填“＞”“＜”或“＝”。

14-8 ○7 11-7 ○ 3 8+6 ○1517-9 ○9 17-8 ○8 12-7 ○ 62.填数墙。

二、选择题。

3.用5、14、9三个数可以组成（）道加减法算式。

A.4B.3C.2三、计算。

4.看谁算得又对又快。

10-8= 16-8= 11-7= 12-8=17-8= 10-7= 14-8= 11-8=13-8= 15-7= 14-7= 17-7=16-7= 12-7= 13-7= 18-8=5.击鼓传花。

四、解决问题。

6.停车场原来停了15辆车，开走了（）辆，还剩（）辆。

7.妈妈买红扣子18个，白扣子9个,黑扣子4个。

(1)红扣子比白扣子多多少个?(个)(2)黑扣子比白扣子少多少个?(个)8.我们一共收了16个胡萝卜,分给朋友9个,还剩多少个?9.一队小朋友从左往右依次报数，明明报的是8，红红报的是14。

明明和红红之间一共有多少个小朋友？参考答案一、1. ＜＞＜＜＞＜2. 3 1 5 1 9 9 6 0 0二、3. A三、4. 2 8 4 4 9 3 6 3 5 8 7 10 9 5 6 105. 4 11 3 10 15 7 17 9四、6. 8 7 15-8=77. （1）18 - 9 = 9(个) 答：红扣子比白扣子多9个。

（2）9 - 4 = 5(个) 答：黑扣子比白扣子少5个。

8.16 - 9 = 7(个) 答：还剩7个。

9.14-8-1=5（个）答：明明和红红之间一共有5个小朋友。

第二周一、根据要求填空。

1.算一算，填一填。

2.在○里填“＞”“＜”或“＝”。

11-2○9 6○13-4 11○9-2 14○12-318○19-5 9○12-4 14-7○6 11-4○83.先将长方形涂成红色，正方形涂成绿色，圆涂成黄色，然后数一数，再填一填。

长方形有( )个，正方形有( )个，圆有( )个。

2020学年七（下）语文周练试卷（一）部编人教版七年级下册七年级下学期语文周练试卷（一）一、古诗文阅读(20分)(一)阅读下面这首诗,完成第1、2题。

(5分)夏意[宋]苏舜钦别院深深夏席①清,石榴开遍透帘明。

树阴满地日当午,梦觉流莺②时一声。

注①席:竹席。

②流莺:莺。

流,指其鸣声婉转。

1、.本诗通过描写院深席清、、树阴满地、四幅夏日图画,流露出诗人的心情。

(3分)2、赏析“石榴开遍透帘明”中“透”字的妙处。

(2分)(二)文言文阅读(15分)【甲】初，权谓吕蒙曰：“卿今当涂掌事，不可不学！”蒙辞以军中多务。

权曰：“孤岂欲卿治经为博士邪！但当涉猎，见往事耳。

卿言多务，孰若孤？孤常读书，自以为大有所益。

”蒙乃始就学。

及鲁肃过寻阳，与蒙论议，大惊曰：“卿今者才略，……”蒙曰：“士别三日，即更刮目相待，大兄何见事之晚乎！”肃遂拜蒙母，结友而别。

(司马光《孙权劝学》)【乙】濮州刺史庞相寿坐贪污解任。

自陈尝在秦王幕府。

上怜之，欲听还旧任。

魏征谏曰：“秦王左右，中外甚多，恐人皆恃恩私，是使为善者惧。

”上欣然纳之。

谓相寿曰：“我昔为秦王，乃一府之主；今居大位乃四海之主不得独私故人。

大臣所执如是，朕何敢违！”赐帛遣之。

相寿流涕而去。

(节选自司马光《资治通鉴》)3.解释下列句中加点词语的意思。

(4分)(1)但当涉猎()(2)肃遂拜蒙母()(3)是使为善者惧()(4)相寿流涕而去()4.用“/”为文中画线部分断句，限断两处。

(2分)今居大位乃四海之主不得独私故人。

5.用现代汉语写出下列句子的意思。

(4分)(1)但当涉猎，见往事耳。

(2)自陈尝在秦王幕府。

6.文中的吕蒙和李世民有什么相同的品质？请再举一个能反映这种品行的历史故事。

(3分)7.请联系实际，谈谈你从这两则故事中得到什么启示(2分)三、现代文阅读(25分)(一)阅读下面的文字,完成第8~10题。

(13分)心中有间小书屋①那是一个初冬的夜晚,晚饭后,我和老公在附近一条不常走的街上散步。

上蔡一高2022-2022学年优班专用试题高一数学 周练一命题时间：2022年09月06日考试时间：90分钟 试卷满分：150分本试卷分第I 卷（选择题）和第II 卷（非选择题）两部分 第Ⅰ卷 一、选择题（共12小题，每小题5分，共60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．）1、如图中阴影部分所表示的集合是（ ） A ．()U B C A C B ．()()AB B CC ．()()A B C B D ．()U BC A C ⎡⎤⎣⎦2、设集合},412|{Z k k x x M ∈+==，},214|{Z k k x x N ∈+==，则（ ）A ．N M =B ．C ．D ．M N φ=3、已知22(1)()(12)2(2)x x f x x x x x +≤-⎧⎪=-<<⎨⎪≥⎩，若()3f x =，则的值是（ ）A ．B ．或32C ．，32或 D ．4、判断下列各组中的两个函数是同一函数的为（ ）⑴3)5)(3(1+-+=x x x y ，52-=x y ；⑵111-+=x x y ，)1)(1(2-+=x x y ；⑶x x f =)(，2)(x x g =；⑷343()f x x x =-3()1F x x x =-⑸21)52()(-=x x f ，52)(2-=x x f 。

A ．⑴、⑵B ．⑵、⑶C ．⑷D ．⑶、⑸5、设集合{}1,2,3, (10)A =集合的所有非空子集元素的和为（ ）。

A ．28100B ．28160C ．28260D ． 283006、已知集合{}2|10,A x x A R =++==∅若，则实数的取值范围是（ ）A ．4<mB ．4>mC ．40<≤mD ．40≤≤m7、已知集合{}{}421,2,3,,4,7,,3A k B a a a ==+，且,,a N x A y B +∈∈∈使中元素31y x =+和中的元素对应，则的值分别为（ ） A ． B ． C ． D ．8、设⎩⎨⎧<+≥-=)10()],6([)10(,2)(x x f f x x x f 则的值为（ ） A ． B ． C ． D ．9、函数)23(,32)(-≠+=x x cx x f 满足,)]([x x f f =则常数等于（ ）A ．B ．C ．33-或D ．35-或10、若函数234y x x =--的定义域为[0,]m ,值域为25[4]4--，，则的取值范围是（ ）A．B．3 []2，4C．3[3]2，D．3[2+∞，）11、函数xxxy+=的图象是（）12、若函数2()f x x=，则对任意实数，下列不等式总成立的是（）A．12()2x xf+≤12()()2f x f x+B．12()2x xf+<12()()2f x f x+C．12()2x xf+≥12()()2f x f x+D．12()2x xf+>12()()2f x f x+二、填空题：（本大题共4小题，每小题5分，共20分．把答案填在题中横线上．）13、设全集{}(,),U x y x y R=∈,集合2(,)12yM x yx⎧+⎫==⎨⎬-⎩⎭，{}(,)4N x y y x=≠-, 那么()()U UC M C N等于________________。

人教版小学六年级数学上册周周练（修订版）第1周 分数乘法一．填空题 1、185 ×( ) = ( )×161= 0.1×( ) = ( )×12 = 1 2、“九月份用电量比八月份节约41”，是把( )看作单位“1”，表示( ) 是( )的41。

3、“今年总产量比去年增产72”，这个72表示( ) 是( )的72。

4、3米铁丝，用去32米，还剩多少米？列式是( )；3米铁丝，用去全长的32，还剩全长的几分之几？列式是( )。

5、甲数是75，乙数是甲数的1514，乙数是( )，丙数是甲、乙两数的积，丙数是( )。

6、 男生占总人数的127，女生占男生人数的()()7、 乘数是58，被乘数是积的()()。

二．把正确答案的序号填入括号⑴ 如果A 是一个不为0的自然数，那么( )。

①A 1是倒数 ②A 和A 1互为倒数 ③A 和A1是倒数 ⑵ 5米的81( )1米的85。

①大于 ②小于 ③等于 ⑶ 两个真分数的积是( )。

①真分数 ②假分数 ③整数⑷ 一个数(0除外)乘以真分数，所得的积与被乘数比较( )。

①积大 ②被乘数大 ③相等 ④不一定三、辨对错。

1、一个数的倒数小于它本身，这个数一定是假分数。

（）2、1千克糖，吃了 1/2 ，还剩 1/2 千克。

（）3、一个不为0的数乘真分数，积一定小于这个数。

（）4、杨树比柳树多1/5 ，那么柳树就比杨树少1/5 （）5、a×4/5 =b×2/3 ，则a<b ( )6、自然数a的倒数是1a。

（）四．计算题⑴直接写得数。

2 7×2 ＝35×1 ＝34×13＝ 12×34＝528×7＝45×47＝ 5－37＝724×314＝16＋56×15＝⑵计算。

1 4＋34×134013×39×57×14＋34×57（14＋15）×4×5 24×5143＋51×1943五、应用题：1、甲乙两地相距420千米，一辆汽车行驶了全程的57，行驶了多少千米？2、一辆汽车行1千米耗油112升，照这样计算，行45千米耗油多少升？行50千米呢？3、猎豹的速度是每小时125千米，老虎每小时跑81千米，现在猎豹和老虎各跑了34 小时，猎豹比老虎少跑多少千米？4、鹅的孵化期是30天，鹅的孵化期的54等于鸭的孵化期；鸡的孵化期是鸭的43。

高考文言文周周练一参考答案一、13．(1)铁马秋风大散关(2)鱼翔浅底，万类霜天竞自由(3)年年知为谁生(4)长风破浪会有时(5)君子成人之美(6)失道者寡助(7)匹夫有责(任选5空，句中有错别字或缺漏，则该句不得分。

共5分。

)二、14．《阿房宫赋》(1分) 15．雄伟奢华；寂寥清冷。

(意思正确即可，2分。

) 16．杜牧的作品重在隐射唐朝统治者穷奢极欲的生活，而崔橹的诗则表现出一种对世事沧桑、物是人非的感慨。

(4分，意思完整正确，语言通顺即给满分。

) 。

三、17．(1)遵循，遵从(2)得……的病(3)就(4)大概(每个解释1分，共4分。

) 18．心胃痛。

(2分)19．(1)原来以行医为业，买卖药材。

(3分，译出大意给1分，评分要点：故、业、货。

)(2)又不去追究到底是虚症还是实症，这样的(医生)不妨害病人的性命(的情形)是不多的。

(3分，译出大意给分，评分要点：求、几何、误。

)20．没有弄清病因，胡乱用药。

(2分)21．例子恰当1分，分析正确2分，共3分。

参考译文：心胃疼痛这个症状，在《黄帝内经》中条目很多，前辈名医们，总共把它归纳为九种病的症状，非常的详细。

现在我借鉴并遵从古人们的那些著作，编成了虚实分明的口诀，可以说没有什么遗漏掉的内容。

我记得邻村有个叫王维藩的医生，是我同宗的弟弟秀才王丹文的表叔，以前行医卖药的时候，邻居有个妇女胃痛请王维藩来治，王维藩用海上方里记载的失笑散，那妇女吃了以后就见效了。

往后只要有心胃疼痛的人，王维藩都是用失笑散给他们治疗，有效无效的各占一半。

王维藩素常吸洋烟，有一天感到自己胃痛，也自己拿出失笑散来吃，痛得更加厉害了，到半夜里胃痛得好像要裂开一样，痛得他敲打枕头床铺，天没亮就静静地死去了。

我根据失笑散是驱淤血的药物来分析，王维藩的女邻居一定是因为淤血化不开引起的胃痛，所以吃了失笑散就见效。

除了淤血以外，伤风感冒中暑、吃喝时造成的胃气凝聚，都能导致胃痛，如果全部胃痛的都用失笑散来治疗，而不探求胃痛的真正原因，怎么能不伤害别人的性命呢？王维藩用失笑散给人治胃痛不知导致了多少人死亡，所以他自己也死在失笑散这味药上，可以说是冥冥之中的报应了。

建平中学2023-2024学年第二学期高三年级周练12024.0312三、解答题(共5道大题,其中17题14分,18题14分,19题14分,20题16分,21题18分,共计76分)17.（本题满分14分.本题共2小题,第（1）小题7分,第（2）小题7分.)34519.(本题满分14分.本题共2小题,第（1）小题6分,第（2）小题8分.)第19届亚运会在杭州举行，志愿者的服务工作是亚运会成功举办的重要保障.某高校承办了杭州志愿者选拔的面试工作.先随即抽取了100名候选者的面试成绩，并分成n 组：第一组[45,55)，第二组[55,65)，第三组[)65,75，第四组[75,85)，第五组[]85,95，绘制成如图所示的频率分布直方图，已知第三、四、五组的频率之和为0.7，第一组和第五组的频率相同.(1)现规定分数排名前40%可以加入资深志愿者组，估计资深志愿者组的录取分数约为多少？（精确到0.1）(2)在第四、第五两组志愿者中，采用分层抽样的方法从中抽取5人，然后再从这5人中选出2人，以确定组长人选，求选出的两人来自不同组的概率；(3)已知第四组的平均成绩为80，方差为20，第五组的平均成绩为90，方差为5，则75分以上的志愿者的平均成绩和方差为多少？620.（本题满分16分.本题共有3小题,第(1)小题满分4分,第（2）小题满分6分.第 (3)小题满分6分)已知抛物线24y x =的焦点为F ，直线l 交抛物线于不同的,A B 两点. （1）若直线l 的方程为1yx =−，求线段AB 的长； （2）若直线l 经过点()1,0P −，点A 关于x 轴的对称点为A ′，求证：,,A F B ′三点共线； （3）若直线l 经过点()8,4M −，抛物线上是否存在定点N ，使得以线段AB 为直径的圆恒过点N ？若存在，求出点N 的坐标，若不存在，请说明理由.7参考答案一、填空题8910111213二、选择题13．在10件产品中有3件次品，从中选3件．下列各种情况是互斥事件的有（ ） ①A ：“所取3件中至多2件次品”， B ： “所取3件中至少2件为次品”； ②A ：“所取3件中有一件为次品”，B ： “所取3件中有二件为次品”； ③A ：“所取3件中全是正品”，B ：“所取3件中至少有一件为次品”； ④A ：“所取3件中至多有2件次品”，B ：“所取3件中至少有一件是正品”； A ．①③B ．②③C ．②④D ．③④B根据互斥事件的定义即可得到结果.在10件产品中有3件次品，从中选3件，∵所取3件中至多2件次品与所取3件中至少2件为次品，两个事件中都包含2件次品，∴①中的两个事件不是互斥事件． ∵所取3件中有一件为次品与所取3件中有二件为次品是互斥事件， ∴②中的两个事件是互斥事件．∵所取3件中全是正品与所取3件中至少有一件为次品是不能同时发生的， ∴③中的两个事件是互斥事件，∵所取3件中至多有2件次品与所取3件中至少有一件是正品都包含2件次品一件正品，以及1件次品两件正品，以及三件正品，所以④不是互斥事件，故选：B ．14．已知α，β是不同的平面，m ，n 是不同的直线，则下列命题不正确的是（ ） A ．若m ⊥α，m n ∥，n ⊂β，则α⊥β B ．若m n ∥，m αβ= ，则n α∥，n β C ．若m n ∥，m ⊥α，则n ⊥α D ．若m ⊥α，m ⊥β，则αβ∥B运用线面垂直的性质和面面垂直的判定定理即得A 项；满足B 项条件的图形有三种，故B 项错误；利用线面垂直的判定方法即得C 项；利用面面平行的判定方法即得D14三、解答题15161718192021222324。

八年级数学上册周周练及答案全册一、简介八年级数学上册周周练及答案全册是为八年级学生编写的一套数学学习辅助材料。

本文档旨在为学生提供全册周周练习题及其答案，帮助学生巩固和提升数学知识和解题能力。

二、周周练习题第一周练习题1.求下列式子的值：a)$4 + 7 \\times 2 =$b)$\\frac{3}{4} \\times 2 + \\frac{2}{5} =$c)$\\frac{1}{3} + \\frac{1}{4} - \\frac{1}{6} =$2.简化下列代数表达式：a)x+2x+3x=b)2(x+x)−3x=c)$(2a + 3b) \\cdot 4 =$3.解下列方程：a)2x+5=15b)$\\frac{x}{4} = 6$c)3x+2=5x−3第二周练习题1.计算下列式子的值：a)$\\frac{3}{5} \\times \\frac{4}{9} +\\frac{2}{3} \\times \\frac{1}{2} =$b)$(\\frac{1}{2})^3 \\times (\\frac{1}{2})^{-2}=$c)$\\sqrt{16} + \\sqrt{25} =$2.求下列代数式的值：a)3x−2，当x=4时b)2x2+x−1，当x=−3时c)x3−3x2+2x，当x=1时3.解下列方程组：\\end{cases}$b)$\\begin{cases} 3x - 2y = 1 \\\\ x + y = 4\\end{cases}$c)$\\begin{cases} 2x - y = 3 \\\\ 3x + 4y = 8\\end{cases}$第三周练习题1.计算下列式子的值：a)$(\\frac{5}{8})^2 \\div (\\frac{7}{10})^3 =$b)$\\frac{3}{5} \\div (\\frac{2}{3} +\\frac{1}{4}) =$c)$\\sqrt{36} - \\sqrt{49} =$2.求下列代数式的值：a)2x2−3xx+5，当x=2,x=3时b)$\\frac{(a-b)^2}{a^2 - ab + b^2}$，当x=3,x=1时c)3x3+2x2−x，当x=−1时3.解下列方程组：\\end{cases}$b)$\\begin{cases} 2x - 3y = 1 \\\\ 4x + y = 5\\end{cases}$c)$\\begin{cases} x + 2y = -3 \\\\ 3x + 4y = 2\\end{cases}$三、答案第一周练习题答案1.求下列式子的值：a)$4 + 7 \\times 2 = 4 + 14 = 18$b)$\\frac{3}{4} \\times 2 + \\frac{2}{5} =\\frac{6}{4} + \\frac{2}{5} = \\frac{12}{8} +\\frac{2}{5} = \\frac{15}{10} + \\frac{4}{10} =\\frac{19}{10} = 1.9$c)$\\frac{1}{3} + \\frac{1}{4} - \\frac{1}{6} =\\frac{2}{6} + \\frac{3}{12} - \\frac{2}{12} =\\frac{4}{12} + \\frac{3}{12} - \\frac{2}{12} =\\frac{5}{12}$2.简化下列代数表达式：a)x+2x+3x=6xb)2(x+x)−3x=2x+2x−3x=2x−xc)$(2a + 3b) \\cdot 4 = 8a + 12b$3.解下列方程：a)2x+5=15解得x=5b)$\\frac{x}{4} = 6$解得x=24c)3x+2=5x−3解得 $x = \\frac{5}{2}$第二周练习题答案1.计算下列式子的值：a)$\\frac{3}{5} \\times \\frac{4}{9} +\\frac{2}{3} \\times \\frac{1}{2} = \\frac{12}{45} +\\frac{2}{6} = \\frac{12}{45} + \\frac{15}{45} =\\frac{27}{45} = \\frac{3}{5}$b)$(\\frac{1}{2})^3 \\times (\\frac{1}{2})^{-2}= \\frac{1}{8} \\times \\frac{1}{(\\frac{1}{2})^2} =\\frac{1}{8} \\times 4 = \\frac{4}{8} = \\frac{1}{2}$c)$\\sqrt{16} + \\sqrt{25} = 4 + 5 = 9$2.求下列代数式的值：a)3x−2，当x=4时解得 $3 \\times 4 - 2 = 12 - 2 = 10$b)2x2+x−1，当x=−3时解得 $2 \\times (-3)^2 + (-3) - 1 = 2 \\times 9 -3 - 1 = 18 - 3 - 1 = 14$c)x3−3x2+2x，当x=1时解得 $1^3 - 3 \\times 1^2 + 2 \\times 1 = 1 - 3 + 2 = 0$3.解下列方程组：a)$\\begin{cases} 2x + 3y = 7 \\\\ 4x - 5y = -2\\end{cases}$解得 $x = \\frac{19}{17}$, $y = \\frac{1}{17}$b)$\\begin{cases} 3x - 2y = 1 \\\\ x + y = 4\\end{cases}$解得 $x = \\frac{9}{5}$, $y = \\frac{11}{5}$c)$\\begin{cases} 2x - y = 3 \\\\ 3x + 4y = 8\\end{cases}$解得 $x = \\frac{20}{17}$, $y =\\frac{31}{17}$第三周练习题答案1.计算下列式子的值：a)$(\\frac{5}{8})^2 \\div (\\frac{7}{10})^3 =\\frac{25}{64} \\div \\frac{343}{1000} =\\frac{25}{64} \\times \\frac{1000}{343} =\\frac{25000}{21952}$b)$\\frac{3}{5} \\div (\\frac{2}{3} +\\frac{1}{4}) = \\frac{3}{5} \\div \\frac{8}{12} =\\frac{3}{5} \\times \\frac{12}{8} = \\frac{9}{10}$c)$\\sqrt{36} - \\sqrt{49} = 6 - 7 = -1$2.求下列代数式的值：a)2x2−3xx+5，当x=2,x=3时解得2(2)2−3(2)(3)+5=8−18+5=−5b)$\\frac{(a-b)^2}{a^2 - ab + b^2}$，当x=3,x=1时解得 $\\frac{(3-1)^2}{3^2 - 3(3)(1) + (1)^2} = \\frac{2^2}{9 - 9 + 1} = \\frac{4}{1} = 4$c)3x3+2x2−x，当x=−1时解得3(−1)3+2(−1)2−(−1)=−3+2+1= 03.解下列方程组：a)$\\begin{cases} 3x + 2y = 4 \\\\ 5x - 3y = 7\\end{cases}$解得 $x = \\frac{23}{19}$, $y = \\frac{2}{19}$b)$\\begin{cases} 2x - 3y = 1 \\\\ 4x + y = 5\\end{cases}$解得 $x = \\frac{17}{11}$, $y = \\frac{9}{11}$c)$\\begin{cases} x + 2y = -3 \\\\ 3x + 4y = 2\\end{cases}$解得 $x = -\\frac{14}{5}$, $y = \\frac{11}{5}$四、总结本文档提供了八年级数学上册周周练习题及其答案，涵盖了多个知识点和题型，并且给出了详细的解题步骤和答案，帮助学生巩固和提升数学知识和解题能力。