周练7
三年级数学周周练
三年级数学周周练7班级姓名一、直接写出得数950×50＝ 2000÷40＝ 17×（）=34009500÷50＝ 69÷23＝（）×240＝48010500÷5＝ 580÷58＝（）÷53＝20905×500＝ 62÷30＝ 720÷（）＝90二、列竖式计算78×26= 808×88= 668×76= 1170×1700=96÷16= 339÷82= 209÷27= 135÷38=三、递等式计算（能简则简）2754-54×25 125×57×8 987-（187+296） 499×7+7四、列式计算1、530减去180的差是5的几倍？2、294除以42的商乘以59，积是多少？五、图形计算：（单位： cm）2368三数周周练7一、填空。
⑴算式846×25中，8与2相乘的结果相当于（）×（），积是（）。
⑵积最大是（），积最小是（）。
⑶□170÷32，要使商是两位数，□可以填的数是（），要使商是三位数，□可以填的数是（）。
二、选择题。
（选择正确的编号填在括号内。
）⑴长方形的宽增加5厘米，长不变，它的周长增加（）。
a.5厘米b.10厘米c.20厘米⑵甲车的行驶速度是2700米/分，乙车3秒钟行150米。
甲乙两车的速度相比较（）。
a.甲车快b.乙车快c.相等d.无法比较⑶用12块边长是1厘米的小正方形，可以拼成（）个不同的长方形。
a.3个b.4个c.5个d.6个三、应用题。
⑴某服装专卖店运来280箱衬衫，自己留下80箱，余下的平均分给4个分店，每个分店分到多少箱？（2）小松鼠装松果，48个装一罐，已经装了38罐，还剩2400个没有装。
全部装完一共要装多少罐？（3）小亚和小丁丁各自绕300米的操场走了一圈，小亚每分钟60米，小丁丁走了6分钟，他俩谁走得快？。
重庆万州实验中学高三物理周周练(7)
万州实验中学高三物理周周练(7)第一部分（选择题共60分）一、本题共10小题；每小题6分，共60分. 在每小题给出的四个选项中，有的小题只有一个选项正确，有的小题有多个选项正确，全部选对的得6分，选不全的得2分，有选错或不答的得0分.1、一旦研制成可供实用的超导材料，那么我们就可以利用这种材料制作：A、电炉丝B、标准电阻C、远距离输电的导线D、保险丝2、将一挤瘪的乒乓球放于热水中，一段时间后乒乓球恢复为球形，在此过程中，下列说法正确的是（设乒乓球内气体为理想气体）A、乒乓球内的气体吸收热量、对外界做功、内能减少B、乒乓球内气体分子的平均动能增大、压强增大、体积增大C、乒乓球内的气体吸收热量、外界对气体做功、内能不变D、乒乓球内的气体温度升高、密度减小、压强增大3、如图，一束只含红光和紫光的较强复色光沿PO方向从水中射向空气，在分界面上分成两束：一束沿OM射出，另一束沿ON方向反射，则A、OM为紫光，ON为红紫色复色光B、OM为红光，ON为红紫色复色光C、OM为紫光，ON为红光D、OM为红光，ON为紫光4、一质点作简谐运动，先后经过P、Q两点，在下列有关该质点经过这两点的叙述中，正确的是A、若经过P、Q两点的位移相同，则质点经过P、Q时的动能必相等B、若经过P、Q两点的动量相同，则质点经过P、Q时的位移必相同C、若经过P、Q两点的回复力相同，则质点经过P、Q时的速度必相同D、若经过P、Q两点的速度最大，则质点从P到Q所用时间必为半个周期的奇数倍5、如图所示，轻绳一端系在质量为m的物体A上，另一端系在一放于水平桌面边缘的B物体上。
现用水平力F拉住绳子上一点O，使物体A从图中实线位置缓慢下降到虚线位置，但B物体仍保持在原位置不动。
则此过程中，B物体对桌面的摩擦力F1和B物体对桌面的压力F2的变化情况是A、F1逐渐增大，F2保持不变B、F1保持不变，F2逐渐增大C、F1保持不变，F2逐渐减小D、F1逐渐减小，F2保持不变6、如图所示，理想变压器原副线圈匝数之比n 1∶n 2=3∶1，且分别接有阻值相同的电阻R 1、R 2，所加交流电源电压的有效值为U ，则 A 、R 1两端电压与R 2两端电压之比为3∶1 B 、R 1、R 2消耗功率之比为1∶9 C 、R 1、R 2两端电压均为U/4 D 、R 1、R 2消耗功率之比为1∶17、如图所示，天然发射性物质射出三种射线，经过一个匀强电场和匀强磁场共存的区域（电场方向和磁场方向垂直），射线进入该区域时，三种射线的入射方向分别与电场方向和磁场方向垂直，由于射线的照射，使感光纸MN 上得到a 、b 两个斑点。
高中英语真题：高考真题周周练(7)
高考真题周周练（7）阅读理解AArriving in Sydney on his own from , my husband, Rashid, stayed in a hotel for a short time while looking for a house for me and our children.During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discov er that his suitcase was gone. He was extremely worried as th e suitcase had all his important papers, including his passport (护照).He reported the case to the police and then sat there, lost a nd lonely in a strange city, thinking of the terrible troubles of g etting all the paperwork organised again from a distant country while trying to settle down in a new one. Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my husband's name and was asking him a lot of questions. Then he said they had found a pile of p apers in their trash can (垃圾桶) that had been left out on the footpath.My husband rushed to their home to find a kind family holdi ng all his papers and documents (文件). Their young daughter had gone to the trash can and foun d a pile of unfamiliar papers. Her parents had carefully sorted them out, although they had found mainly foreign addresses o n most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his ne w telephone number to a friend.That family not only restored the important documents to us that day but also restored our faith and trust in people. We sti ll remember their kindness and often send a warmwish their way.21. What did Rashid plan to do after his arrival in ?A. Go shopping.B. Find a house.C. Join his family.D. Take a vacation.22. The girl's parents got Rashid's phone number from ______ .A. a friend of his familyB. a policemanC. a letter in his papersD. a stranger in23. What does the underlined word “restored” in the last paragraph mean?A. Showed.B. Gave back.C. Delivered.D. Sent out.24. Which of the following can be the best title for the text?A. From India to .B. Living in a New Country.C. Turning Trash to Treasure.D. In Search of New Friends.BAs more and more people speak the global languages of E nglish, Chinese, Spanish, and Arabic, other languages are ra pidly disappearing. In fact, half of the 6,000-7,000 languages spoken around the world today will likely die out by the next century, according to the United Nations Educ ational, Scientific and Cultural Organization (UNESCO).In an effort to prevent language loss,scholars from a number of organizations — UNESCO and N ational Geographic among them — have for many years been documenting dying languages and the cultures they reflect. Mark Turin, a scientist at the Macmillan Centre, , who spec ializes in the languages and oral traditions of the Him alayas, is following in that tradition. His recently published boo k, A Grammar of Thangmi with an Ethnolinguistic Introduction to the Speakers and Their Culture, grows out of his experience living, working, and raising a family in a village in .Documenting the Thangmi language and culture is just a st arting point for Turin, who seeks to include other languages a nd oral traditions across the Himalayan reaches of India, Nep al, Bhutan, and . But he is not content to simply record these voices before they disappear without record.At the of discovered a wealthof important materials — including photographs, films, tape re cordings, and field notes — which had remained unstudiedand were badly in need of care and protection.Now, through the two organizations that he has founded —the Digital Himalaya Project and the World Oral Literature Project — Turin has started a campaign to make such documents, found in libraries and st ores around the world, available not just to scholars but to the younger generations of communities from whom the material s were originally collected. Thanks to digital technology and the widely available Internet, notes, the en dangered languages can be saved and reconnected with spe ech communities.25. Many scholars are making efforts to ______.A. promote global languagesB. rescue disappearing langua gesC. search for language communitiesD. set up language r esearch organizations26. What does “that tradition” in Paragraph 3 refer to?A. Having full records of the languages.B. Writing books on language teaching.C. Telling stories about language users.D. Living with the native speakers.27. What is 's book based on?A. The cultural studies in .B. The documents available at Ya le.C. His language research in .D. His personal experience i n .28. Which of the following best describes 's work?A. Write, sell and donate.B. Record, repair and reward.C. Collect, protect and reconnect.D. Design, experiment and report.完形填空As a general rule, all forms of activity lead to boredom when t hey are performed on a routine (常规) basis. As a matter of fact, we can see this 41 at work inpeople of all 42 . For example, on Christmas morning, child ren are excited about 43 with their new toys. But their 44 soon wears off and by January those 45 toys can be found put away in the basement. The world is full of 46 stamp alb ums and unfinished models, each standing as a monument to someone's 47 interest. When parents bring home a pet, th eir child 48 bathes it and brushes its fur. Within a short time , however, the 49 of caring for the animal is handed over to the parents. Adolescents enter high school with great 50 but are soon looking forward to 51 . The same is true of the y oung adults going to college. And then, how many 52 , who now complain (抱怨) about the long drives to work, 53 drove for hours at a time when they first 54 their driver's licenses (执照)? Before people retire, they usually 55 to do a lot of 56 things, which they never had 57 to do while working. But 58 after retirement, the golfing, the fishing, the reading and a ll of the other pastimes become as boring as the jobs they 5 9 . And, like the child in January, they go searching for new 60 .41. A. principle B. habit C. way D. power42. A. parties B. races C. countries D. ages43. A. working B. living C. playing D. going44. A. confidence B. interest C. anxietyD. sorrow45. A. same B. extra C. funny D. expensive46. A. well-organized B. colorfully-printed C. newly-collected D. half-filled47. A. broad B. passing C. differentD. main48. A. silently B. impatiently C. gladly D. wo rriedly49. A. promise B. burden C. right D. game50. A. courage B. calmness C. confusionD. excitement51. A. graduation B. independenceC. responsibilityD. success52. A. children B. students C. adults D. retir ees53. A. carefully B. eagerly C. nervously D. bravely54. A. requiredB. obtainedC. noticedD. discovered55. A. need B. learn C. start D. plan56. A. great B. strange C. difficult D. correct57. A. time B. moneyC. skillsD. knowledge58. A. only B. wellC. evenD. soon59. A. lost B. chose C. left D. quit60. A. pets B. toys C. friends D. colleagues单词拼写1. The course will start in ______ (十二月).2. She ______ (提醒) me that I hadn't written to Mother.3. I hope to be back in a ______ (两星期).4. My ______ (最喜欢的) colour is green.5. The baby in the next room ______ (睡醒) and began to cry.6. ______ (水桶) are often used for holding and carrying water.7. They look like the teeth of a ______ (凶猛的) animal.8. It is ______ (危险的) for children under five years old to be left alone at home.9. Because of his special experience, he was chosen to be an ______ (助理) to the president for energy affairs.10. Two years later, he left his parents and entered a ______ (医学的) college.11. On ______ (平均), people who don't smoke are healthier than people who d o.12. For a goalkeeper, it's a great ______ (优势) to have big hands.13. Many of his finest pictures are ______ (悬挂) in the national museum.14. Sydney wants to become a ______ (律师) in the future.15. He ______ (按下) the button and the doorbell rang.16. Farmers are reporting a very big ______ (收成) this year.17. I washed and ______ (剃须), then hurried out of the house.18. John missed the game because of ______ (胃) pains.19. Callie will start ______ (幼儿园) in September.20. The old lady needs a few feather ______ (枕头) to make herself comfortable.短文改错（文章中共有9处错误）There are advantage for students to work while studying at school. One of them was that they can earn money. For the m ost part, students working to earn money for their own use. Earning their own money allow them t o spend on anything as if they please. They would have to as k their parents for money or for permission to do things by the money. Some students may also to save up for our college or future use.高考真题周周练（7）Keys21-24: BCBC (全国卷2014)25-28: BADC (全国卷2014)41-60: ADCBA; DBCBD; ACBBD; AADCB (全国卷2014)单词拼写(全国卷2010, 全国卷2009)1. December2. reminded3. fortnight4. favourite / favorite 5. awoke / awaked 6. Buckets 7. fierce 8. dang erous 9. assistant 10. medical 11. average 12. advant age 13. hung 14. lawyer 15. pressed / pushed 16. h arvest 17. shaved 18. stomach 19. kindergarten 20. pillows短文改错（文章中共有9处错误）全国卷2005There are advantage (改advantages) for students to work while studying at school. On e of them was (改is) that they can earn money. For the most part, students wor king (改work) to earn money for their own use. Earning their own mon ey allow (改allows) them to spend on anything as if (去if) they please. They would (加not) have to ask their parents for money or for permission to d o things by (改with) the money. Some students may also to (去to) save up for our (改their) college or future use.高考真题周周练（7）阅读理解AArriving in Sydney on his own from , my husband, Rashid, stayed in a hotel for a short tim e while looking for a house for me and our children.During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discover that his suitcase was gone. He was extremely worried as th e suitcase had all his important papers, includi ng his passport (护照).He reported the case to the police and then sat there, lost and lonely in a strange city, thin king of the terrible troubles of getting all the paperwork organised again from a distant country while trying to settle down in a new one.Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my hus band's name and was asking him a lot of questions. Then he said they had found a pile of pa pers in their trash can (垃圾桶) that had been left out on the footpath.My husband rushed to their home to find a kind family holding all his papers and document s (文件). Their young daughter had gone to the trash can and found a pile of unfamiliar papers. H er parents had carefully sorted them out, although they had found mainly foreign addresses o n most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend .That family not only restored the important documents to us that day but also restored our faith and trust in people. We still remember their kindness and often send a warmwish their way.21. What did Rashid plan to do after his arrival in ?A. Go shopping.B. Find a house.C. Join his family.D. Take a vacation.22. The girl's parents got Rashid's phone number from ______.A. a friend of his familyB. a policemanC. a letter in his papersD. a stranger in23. What does the unde rlined word “restored” in the last paragraph mean?A. Showed.B. Gave back.C. Delivered.D. Sent out.24. Which of the following can be the best title for the text?A. From India to .B. Living in a New Country.C. Turning Trash to Treasure.D. In Search of New Friends.BAs more and more people speak the global languages of English, Chinese, Spanish, and Arabic, other languages are rapidly disappearing. In fact, half of the 6,000-7,000 languages spoken around the world today will likely die out by the next century, accord ing to the United Nations Educational, Scientific and Cultural Organization (UNESCO).In an effort to prevent language loss,scholars from a number of organizations — UNESCO and National Geographic among the m — have for many years been documenting dying languages and the cultures they reflect. Mark Turin, a scientist at the Macmillan Centre, , who specializes in the languages and or al traditions of the Himalayas, is following in that tradition. His recently published book, A Grammar of Thangmi with an Ethnolinguistic Introduction to the Speakers and Their Culture, grows out of his experienc e living, working, and raising a family in a village in .Documenting the Thangmi language and culture is just a starting point for Turin, who seek s to include other languages and oral traditions across the Himalayan reaches of India, Nepal , Bhutan, and . But he is not content to simply record these voices before they disappear with out record.At the of discovered a wealthof important materials — including photographs, films, tape recordings, and field notes — whi ch had remained unstudied and were badly in need of care and protection.Now, through the two organizations that he has founded — the Digital Himalaya Project and the World Oral Literature Project — Turin has started a campaign to make such doc uments, found in libraries and stores around the world, available not just to scholars but to th e younger generations of communities from whom the materials were originally collected. Th anks to digital technology and the widely available Internet, notes, the endangered languages can be sa ved and reconnected with speech communities.25. Many scholars are making efforts to ______.A. promote global languagesB. rescue disappearing languagesC. search for language communitiesD. set up language research organizations26. What does “that tradition” in Paragraph 3 refer to?A. Having full records of the languages.B. Writing books on language teaching.C. Telling stories about language users.D. Living with the native speakers.27. What is 's book based on?A. The cultural studies in .B. The documents available at Yale.C. His language research in .D. His personal experience in .28. Which of the following best describes 's work?A. Write, sell and donate.B. Record, repair and reward.C. Collect, protect and reconnect.D. Design, experiment and report.完形填空As a general rule, all forms of activity lead to boredom when they are performed on a routine (常规) basis. As a matter of fact, we can see this 41 at work in people of all 42 . For exampl e, on Christmas morning, children are excited about 43 with their new toys. But their 44 soon wears off and by January those 45 toys can be found put away in the basement. The world is full of 46 stamp albums and unfinished models, each standing as a monument to someone's 47 interest. When parents bring home a pet, their child 48 bathes it and brus hes its fur. Within a short time, however, the 49 of caring for the animal is handed over to the parents. Adolescents enter high school with great 50 but are soon looking forward to 51 . The same is true of the young adults going to college. An d then, how many 52 , who now complain (抱怨) about the long drives to work, 53 drove for hours at a time when they first 54 their driver's licenses (执照)? Before people retire, they usually 55 to do a lot of 56 things, which they never had 57 to do while working. But 58 after retirement, the golfing, the fishing, the reading and al l of the other pastimes become as boring as the jobs they 59 . And, like the child in Januar y, they go searching for new 60 .41. A. principle B. habit C. way D. power42. A. parties B. races C. countries D. ages43. A. working B. living C. playing D. going44. A. confidence B. interest C. anxietyD. sorrow45. A. same B. extra C. funny D. expensive46. A. well-organized B. colorfully-printed C. newly-collected D. half-filled47. A. broad B. passing C. differentD. main48. A. silently B. impatiently C. gladly D. worriedly49. A. promise B. burden C. rightD. game50. A. courage B. calmnessC. confusionD. excitement51. A. graduation B. independenceC. responsibilityD. success52. A. children B. students C. adults D. retirees53. A. carefully B. eagerly C. nervously D. bravely54. A. required B. obtained C. noticedD. discovered55. A. need B. learn C. start D. plan56. A. great B. strange C. difficultD. correct57. A. time B. moneyC. skillsD. knowledge58. A. only B. well C. even D. soon59. A. lost B. chose C. left D. quit60. A. pets B. toys C. friends D. colleagues单词拼写1. The course will start in ______ (十二月).2. She ______ (提醒) me that I hadn't written to Mother.3. I hope to be back in a ______ (两星期).4. My ______ (最喜欢的) colour is green.5. The baby in the next room ______ (睡醒) and began to cry.6. ______ (水桶) are often used for holding and carrying water.7. They look like the teeth of a ______ (凶猛的) animal.8. It is ______ (危险的) for children under five years old to be left alone at home.9. Because of his special experience, he was chosen to be an ______ (助理) to the president for energy affairs.10. Two years later, he left his parents and entered a ______ (医学的) college.11. On ______ (平均), people who don't smoke are healthier than people who do.12. For a goalkeeper, it's a great ______ (优势) to have big hands.13. Many of his finest pictures are ______ (悬挂) in the national museum.14. Sydney wants to become a ______ (律师) in the future.15. He ______ (按下) the button and the doorbell rang.16. Farmers are reporting a very big ______ (收成) this year.17. I washed and ______ (剃须), then hurried out of the house.18. John missed the game because of ______ (胃) pains.19. Callie will start ______ (幼儿园) in September.20. The old lady needs a few feather ______ (枕头) to make herself comfortable.短文改错（文章中共有9处错误）There are advantage for students to work while studying at school. One of them was that t hey can earn money. For the most part, students working to earn money for their own use. Earning their own money allow them to spend on anything as if they p lease. They would have to ask their parents for money or for permission to do things by the money. Some students may also to save up for our college or future use.高考真题周周练（7）Keys21-24: BCBC (全国卷2014)25-28: BADC (全国卷2014)41-60: ADCBA; DBCBD; ACBBD; AADCB (全国卷2014)单词拼写(全国卷2010, 全国卷2009)1. December2. reminded3. fortnight4. favourite / favorite5. awoke / awaked6. Bu ckets7. fierce8. dangerous 9. assistant 10. medical 11. average 12. advantage 13. hung 14. lawyer 15. pressed / pushed 16. harvest 17. shaved 18. stomach 19. kindergarten 20. pillows短文改错（文章中共有9处错误）全国卷2005There are advantage (改advantages) for students to work while studying at school. One of them was (改is) that they can earn money. For the most part, students working (改work) to earn money for their own use. Earning their own money allow (改allows) them to spend on anything as if (去if) they please. They would (加not) have to ask their parents for money or for permission to do things by (改with) the money. Some students may also to (去to) save up for our (改their) college or future use.。
化学周练7
北京市科迪实验中学2014届高三第一学期周练试卷周练(7)1．2012年3月修订的《环境空气质量标准》中新纳入的强制监测指标是( )A ．PM 2.5B ．NOxC ．SO 2D ．可吸入颗粒物2．下列有关化学用语使用正确的是( )3．某元素的一种同位素X 的原子质量数为A ，含N 个中子，它与1H 原子组成H m X 分子，在a g H m X 中所含质子的物质的量是( )A ．a A ＋m(A －N)mol B ．a A (A －N)mol C ．a A ＋m(A －N ＋m)mol D ．a A (A －N ＋m)mol 4．XY 2是离子化合物，X 和Y 离子的电子层结构都与氖原子相同，则X 、Y 为( )A ．Mg 和FB ．K 和SC ．Ca 和FD ．Ca 和Cl5．W 、X 、Y 、Z 均为短周期元素，W 的最外层电子数与核外电子总数之比为7︰17；X 与W 同主族；Y 的原子序数是W 和X 的原子序数之和的一半；含Z 元素的物质焰色反应为黄色。
下列判断正确的是( )A ．氢化物的沸点：X>WB ．金属性：Y>ZC ．离子的还原性：X>WD ．原子及离子半径：Z>Y>X6．下列化合物中，既有离子键，又有共价键的是 ( ) ( )A ．CaOB ．SiO 2C ．Na 2O 2D ．H 2O7．X 、Y 、Z 是三种短周期的主族元素,在周期表的位置如图，X 原子的最外层电子数是其次外层电子数的3倍,下列说法正确的是( )A ．原子半径： Y >Z >XB ．气态氢化物的热稳定性：X<ZC ．Y 和Z 的最高价氧化物对应水化物均为强酸D ．若Z 的最高正价为+m ，则X 的最高正价也一定为+m8．X 、Y 、Z 三种非金属元素具有相同的电子层数，它们的气态氢化物的稳定性强弱顺序是XH3<H2Y<HZ，下列说法中正确的是( )A．原子序数X>Y>Z B．原子得电子能力X<Y<ZC．原子半径X<Y<Z D．离子还原性X3－<Y2－<Z－9．元素周期表的第七周期称为不完全周期，若将来发现的元素把第7周期全排满，则下列推论错误．．的可能性最大的是( )A．该周期有32种元素B．该周期的元素，原子序数最大为118C．该周期的ⅦA族元素是金属元素D．该周期的ⅢA族元素的氢氧化物具有两性10．门捷列夫在描述元素周期表时，许多元素尚未发现，但他为第四周期的三种元素留下了空位，并对它们的一些性质做了预测，X是其中的一种“类硅”元素，后来被德国化学家文克勒发现，并证实门捷列夫当时的预测相当准确。
四年级语文周周练7作文
四年级语文周周练7作文在写这篇作文之前，先得了解一下四年级语文周周练7是什么鬼，听起来挺神秘的。
就是那种每周来一发考验你语文底蕴的东西吧，不过别怕，我可不是来卖关子的。
话说我四年级的时候，语文考试对我来说，有时候就像捉迷藏一样，有时找到了，有时候嘛，就有点儿措手不及。
记得有一次，老师出了一道填空题，说是要填一个“意思接近的词语”，结果我拿着字典去查，看了半天也没找到个靠谱的。
后来同桌小明一下子就来劲了，直接给我来了个“同义词”这四个字，一听就觉得特别对味，就是当时咱脑子里面怎么也冒不出来这么个高级词儿。
还有一回，作文题目是“描述你最喜欢的动物”，我当时那叫一个懵逼啊，因为我最喜欢的动物其实是长颈鹿，可是长颈鹿怎么描述呢？我就写了一堆他长长的脖子和好奇的大眼睛，结果老师给我红了画圈，说写得不够生动。
后来同学小芳居然写了一篇关于她家猫咪的，咋一看比我写的还生动，我就觉得我这生动也不生动，就这样我和我的长颈鹿搞得一塌糊涂。
其实，四年级的语文考试除了要会背诵古诗，还得能写一手流畅的作文。
记得有一次，我们班组织了个写“如果我是一本书”的作文比赛，大家都各显神通。
有个小刚写了个“如果我是一本数学书”，说自己要整天被人抱着摸来摸去，还得天天被人数学啥的。
听得我们哈哈大笑，觉得这小子太有才了。
周周练7，我想象中肯定也是个有趣的家伙，每周来一发考验，挑战我们的智慧和文采。
就像是那种跳绳比赛，一下子你对了，一下子你又跟自己较劲，感觉挺有成就感的。
所以，四年级的语文周周练7，虽然有时候让人觉得紧张，但也是一种锻炼和挑战。
每次考试后，我们总能学到不少东西，而且还能跟同学们一起分享各自的糗事和高招。
就像是一场精彩的表演，每个人都在为自己的台词而努力，同时也享受着整个过程带来的乐趣。
总之，四年级的语文周周练7，就像是一道道有趣的小点心，虽然有时候难度各异，但是每次过后都能感觉到进步和收获。
记得大家一定要抱着轻松愉快的心态去面对，这样才能更好地发挥自己的潜力。
人教版英语七年级上册周周练—第七周
第七周人教版英语七年级上册周周练考查范围：Unit 4一、单项选择1.—Who is he?—I ________ he is David’s cousin.A. sayB. seeC. thinkD. ask2.—How time flies! The middle school life is coming to an end.—Yes. We have to say goodbye, _______ our friendship will last forever.A. forB.butC.orD.so3.I look for my book _____. But I can't find it.A.somewhereB.whereC.everywhereD.anywhere4.Liu Feng is a good man. He __________ helps others in need.A.sometimesB.alwaysC.neverD.ever5.A good student always takes notes in his/her __________ in class.A.model planeB.rulerC.mapD.notebook6.—________, Jane. You have no time(时间）.—Oh，no! I can't find my hat.e toe ate one up7.Li's room is not ______. His books are everywhere, on his bed, on the sofa and under the chair.A. funnyB.bigC.tidyD.old8.—I can't find my hat.—Hey. It's _____ your head.A.inB.onC. underD.of9.—Are these _______ books?—No, they're ______.A. their; yourB. theirs; yoursC. their; yoursD. theirs; your10.—Is the baseball on the bed?—No, ______. It's ______ the bed.A.it isn't; onB.it isn't; underC.it is; underD.it is; on二、阅读理解AThis is our classroom. It’s not big. There is a blue desk in the front(在前面). It’s our teacher’s desk. On the teacher’s desk, there is a computer. There are twenty green desks and chairs, too. They are ours. On the wall there is a blackboard. What colour is it? Of course it’s black . There are six pictures on the wall, too. They are red. There is a ball under my desk. It’s black and white. It’s my football. Football is my favourite sport. I like playing football with my friends.1.What’s on the teacher’s desk?A.A book.B.A pen.C.A computer.2.How many desks are there in the classroom?A.Twenty.B.Twenty-one.C.Twenty-three.3.What colour are the students’ chairs?A.Red.B.Green.C.White.4.Where is the writer’s(作者的)football?A.Under his desk.B.Under his chair.C.In his desk.5.What’s the writer’s favourite sport?A.Basketball.B.Running.C.Football.BHello, my name is Julia. I am a Chinese girl. Now I am in Class One? Grade Seven in No. 2 Middle School. I have a nice room. In my room, I have a bed, a desk, a bookcase, some chairs and some other things. I always put my books in my bookcase and on the desk. Where are my tennis balls? Oh, they are under the bed. But my basketball is under my chair. My parents love me very much. Their room is next to mine.1. What class is Julia in?A. Class One.B. Class Two.C. Class Seven.D. Class Six2. Does Julia have a desk in her room?A. No, she doesn't.B. Yes, she does.C. We don't know.D. No, she does.3. Where is her basketball?A. It's under her bed.B. It's under her chair.C. It's in the bookcase.D. It's on her chair.4. What does the underlined word "put" mean in Chinese?A.放置B.朗读C.扔D.推迟5. Next to Julia's room is _______.A. her sister's roomB. her brother's roomC. her parents' roomD. her grandparents' room三、补全对话A: Hello, Susan!B: ① ______A: Is my computer game on the table?B: No, it isn't. It's in the bookcase.A: Oh, OK, ②______ Are they in the bookcase, too?B: Let me have a look. ③______ They're on the chair.A: So, where is my pencil case?B: ④______A: Where's my backpack?B: It's under the table. And your baseball is under the chair.A: Good. ⑤______B: The keys? They're on the table.1.People like to put their books in the _______(书橱).2.Her books are _______ (到处).3.I love my room and it is always t_______ (井井有条的). 4—Where are my books?—They're on the _______ (沙发).5.—Is this Anna's tape ______ (播放机)?—No, it isn't. It's Sally's.五、书面表达假如你是李明,请根据下列信息写一篇短文介绍一下你自己。
周练七
周练七一、选择题：本大题共12个小题，每小题5分，共60分. 在每小题给出的四个备选项中，只有一项是符合题目要求的. 1．命题“若α=4π，则tan α=1”的逆否命题是（ ）A.若α≠4π，则tan α≠1 B. 若α=4π，则tan α≠1C. 若tan α≠1，则α≠4πD. 若tan α≠1，则α=4π2.不等式（a －2）x 2+2(a －2)x -4＜0,对一切x ∈R 恒成立，则a 的取值范围是（ ）A.（-∞,2]B.（-2,2]C.（-2,2）D.（-∞,2) 3．对任意实数a 、b 、c ，在下列命题中，真命题是( )A ．“ac >bc ”是“a >b ”的必要条件B ．“ac ＝bc ”是“a ＝b ”的必要条件C ．“ac >bc ”是“a >b ”的充分条件D ．“ac ＝bc ”是“a ＝b ”的充分条件4． 不等式4x －1≤x －1的解集是（ ）A ．(－∞，－1]∪[3，＋∞)B ．[－1,1)∪[3，＋∞)C ．[－1,3]D ．(－∞，－3)∪(1，＋∞) 5．下列不等式一定成立的是（ ）A ．21lg()lg (0)4x x x +>> B ．1sin 2(,)sin x x k k Z xπ+≥≠∈ C ．212||()x x x R +≥∈ D ．211()1x R x >∈+6．已知ab ≠0，那么a b >1是b a<1的( )A ．充分不必要条件B ．必要不充分条件C ．充要条件D ．既不充分又不必要条件7．下列说法错误的是( )A ．命题“若x 2－4x ＋3＝0，则x ＝3”的逆否命题是：“若x ≠3，则x 2－4x ＋3≠0”B ．“x >1”是“|x |>0”的充分不必要条件C ．若p 且q 为假命题，则p 、q 均为假命题D ．命题p ：“∃x 0∈R 使得x 20＋x 0＋1<0”，则 ⌝p ：“∀x ∈R ，均有x 2＋x ＋1≥0” 8．已知函数()y f x =与()y g x =的图像如图所示，则不等式()0()f xg x > 的解集是( )A ．[5,25]B ．(5,25]-C ．(15,5)(5,25]--D ．(15,5][5,25]--9．下列命题正确的个数为 （ ） ①已知31,11≤-≤≤+≤-y x y x ，则y x -3的范围是[]7,1； ②若不等式)1(122--x m x ＞对满足2≤m的所有m 都成立，则x 的范围是）（213,217+-；③如果正数b a ,满足3++=b a ab ，则ab 的取值范围是[)+∞,8 ④5.02131)31(,3log ,2log ===c b a 大小关系是c b a ＞＞A ．1B ．2C ．3D ．410.数列{}n a 满足21(*)2n n n a a a n N ++=∈，且121,2a a ==，则数列{}n a 的前2011项的乘积为( ) A ．20092B ．20102C ．20112D ．2012211。
沪教版小学数学三年级第一学期周周练7
三年级第一学期数学第7周周末卷班级__________姓名__________学号________本周掌握知识点：1、熟练两位数被一位数除的横式计算和竖式计算并会进行验算。
2、掌握三位数被一位数除的横式计算。
一、直接写出得数30×9= 3×600= 50×60= 120÷3= 270÷9= 630÷70= 8100÷9= 130×4= 200÷40= 400÷4= 3000÷5= 1100－500×2=二、分拆计算34×6 = 3×536= 83÷5=85÷4= 654÷4= 673÷6三、竖式计算（打☆验算）784×6= 66÷4= 92÷3= ☆83÷4=四、递等式计算91×9-9 756-85+15 40×3+40×298÷7×6 40+60÷10 50÷5×10四、填空1、已知余数是3，除数是4，商是25，被除数是（）。
2、149×5的积是（）位数，积在（）和（）之间。
3、○÷7＝16……★，★最大是（），这时被除数是（）。
4、500×8的积的末尾有（）个0，积是（）。
5、10除（）得5。
6、从96里连续减去6，最多能减（）次。
7、299÷3的商最接近（）。
8、要使232×□的积是四位数，□里最小可以填（）。
9、要使□6÷6的商是两位数，□里可以可以填（）。
五、判断1、两数相除，被除数末尾有一个零，商末尾一定有一个零。
………（）2、被除数是两位数，除数是一位数，商一定是两位数。
……………（）3、0被任何数除都等于0。
………………………………………………（）4、0除任何数答案都是0。
周练7
读“以北极为中心的地球部分示意图”（AB为晨昏线，阴影部分为气压带），完成1～3题。
1．图中甲所在地的气压带名称应该是A.赤道低压带B.副热带高压带C.副极地低压带D.极地高压带2．此时，以下地理现象可能出现的是A.我国长江中下游地区正刮西北风B. 北印度洋洋流呈逆时针方向流动C. 开普敦处于炎热干燥的季节D.亚欧大陆等温线向低纬凸出3．此时太阳直射点的地理坐标是：A．20°N，135°W B．20°N，135°EC．20°S，135°W D．20°S，135°E读图2和资料，回答4～5题。
高空的冰晶、雪花下降到距地面2000～3000米时,因周围温度升高而融化成为低于0℃的过冷却水滴，当这些过冷却水滴接触到温度低于0℃的地面或物体时，就会迅速冻结成晶莹透明的冰壳，即形成冻雨现象。
4．冻雨现象最有可能出现在图中的：A．①处B．②处C．③处D．④处5．当某地区出现冻雨现象时，该地区：A．处在单一气团的控制下B．上空有逆温层存在C．正值春秋季节D．地下潜水位迅速上升右图中，大圆是某一日地球上的一个晨昏圈，直线代表经线，当国际标准时间为10：00时，Y(70°S)地正值正午。
回答6～8题，6．x地的地理坐标是A ．70°N 30°EB ．20°N 150°EC ．70°N 150°WD ．90°S． 30°E7．赤道上，西半球处于昼半球的经度范围是A． 0°-40°W B ．160°E--180°C ．60°W--20°WD ．15°W--20°E8．图示所代表的日期，可能出现的地理现象是A．哈尔滨举办冰雪旅游节 B．圣地亚哥正值西风带控制C．印度的恒河正值枯水期 D．珠江口的盐度高于一年中的平均值右下图为某山地的局部等高线图，等高距为20米，AB为空中索道。
初三地理周练七
初三地理周练七一、单项选择题（将正确答案的序号填入下表）1.世界上跨纬度最广的大洲是A.亚洲B.非洲C.北美洲D.南极洲2.亚洲与北美洲的分界线是A.苏伊士运河B.土耳其海峡C.巴拿马运河D.白令海峡3.人们按方位把亚洲分为6个地区，其中我国位于哪个地区A.南亚B.西亚C.东亚D.中亚4.亚洲地形多种多样，中部主要的地形类型是A.高原和山地B.平原和高原C.山地和丘陵D.平原和盆地5.世界最高的大高原是A.巴西高原B.德干高原C.青藏高原D.伊朗高原6.亚洲气候类型复杂多样，但下列在亚洲没有分布的气候类型是A.热带雨林气候B.热带沙漠气候C.热带草原气候D.热带季风气候7.亚洲东部和南部的夏季降水与下列哪一因素的强弱有密切的关系A.地形B.夏季风C.冬季风D.纬度位置8.下列河流注入北冰洋的是A.长江B.黄河C.印度河D.叶尼塞河9.亚洲人口超过1亿的国家有A.5个B.6个C.7个D.8个10.世界各大洲中，人口自然增长率最高的是A.亚洲B.欧洲C.拉丁美洲D.非洲11.亚洲人口稠密的地区主要在A.东部、西部B.南部、西部C.东部、南部D.南部、中部12.亚洲不同地区的不同民族，创造了不同的文化，如两河流域的A.华夏文化B.印度河流域文化C.恒河文化D.阿拉伯文化13.亚洲经济最发达的国家是A.中国B.印度C.沙特阿拉伯D.日本14.下列地区的居民因气候湿热，人们过着聚居生活的是A.恒河三角洲的孟加拉人B.东西伯利亚的亚库特人C.沙特阿拉伯的贝都因人D.加里曼丹岛的达雅克人15.下列国家中，依靠发展出口加工工业，推进本国经济发展的典型是A.新加坡B.印度C.中国D.沙特阿拉伯班级_______________ 姓名_________________16.读“亚洲地区图”,完成下列各题： （1）字母代表的地理事物名称： 山脉A________ B_________ 海峡C________ G_________运河D_____ 大洋E______ F______ 高原H_______ 平原 I_______（2）数字代表的地理事物名称：半岛①_______ 国家③______ 大洲④_______（3）①②两处纬度相同，气候类型不同，①是_______气候，②_______气候。
部编版三年级上册语文第七周周练
三年级语文第7周周练制卷人：别红芹 审核：邵泽红一、认真书写，注意美观。
（5分）乘着想象的翅膀，游历奇妙的童话王国，看花儿跳舞，听星星歌唱。
二、看拼音，写词语（20分）huǒ yàn là zhú ji hū wéi qúndi bǎn （ ） （ ） （ ） （ ） （ ）hū ránkě lián jiù mìng liú lèi dǎ suàn （ ） （ ） （ ） （ ） （ ）三、 按要求完成语句练习（12分） 1.补充下列词语，并选择其中的一个词语写一句话。
(9分) 争( )恐( ) ( )嚼（ )咽 （ ）吃 ( )惊 2照样子，发挥想象写一写。
(3分) 例:我不讨厌下雨，因为下雨只不过是让口渴了的大地喝口水而已。
我不讨厌打雷，因为打雷只不过是 四、试着使用学过的修改符号修改下面的一段话。
(共3处错误)(6分) 星期日的一天上午，妈妈带我去公园游完。
那里各色的花全都开放了，蝴蝶、 蜜蜂在花丛中自在地飞舞。
这画面，我不禁赞叹:“多么迷人的景色呀!" 五、选择正确的答案，填序号。
(15分) 1.下列词语中加点字读音有误的一项是( )。
①挣钱(zhèng) 召开(zhāo) 明晃晃(huǎng)②稍息(shào) 划出(huá) 一骨碌(gū) ③根茎(jing) 处罚(chǔ)香喷喷(pēn) 2.下列词语中没有错别字的一项是( )。
①火柴怒力富商②钢才旅行饥饿③答应孝顺等待3.下列词语不属于同一类型的一项是( )。
①叫喊吵嚷呼唤②哗啦 呜哇嘀咕③吞咽咀嚼咬合4.下列句子中加点词语使用错误的一项是( ).①一大把火柴发出强烈的光，照得跟白天一样明亮。
②种子被泥土紧紧地包含着，它把身体缩成一团。
③大家眼睛望着别处，心却牵挂着那一点奶酪渣。
四上语文周周练7 A卷 盘古开天地 精卫填海(2022年秋季)
盘古开天地精卫填海（满分：100分）一、根据拼音写汉字。
（每字1分，共16分）1．小猫慢慢地zhēng kāi 眼睛，huǎn huǎn 地fān sh ēn 爬了起来。
2．爸爸十分担心我和弟弟会nìshuǐ，要我们马上fǎn huí。
3．bēn liú bù xī 的黄河zī rùn了两岸的庄稼。
二、根据题目要求，选择正确的选项。
（每题6分，共18分）1．下列词语的搭配不恰当的一项是（）。
A．巨大的变化B．奔流不息的江河C．茂盛的花草树木D．飘动的雷声2．按照顺序选字组词，正确的一项是（）。
揭竭劈辟（）开枯（）精（）（）头盖脸A．揭竭劈辟B．B．竭揭劈辟C．揭竭辟劈D．竭揭辟劈盘古开天地精卫填海（满分：100分）3．下列对“衔”的解释完全正确的一项是（）。
A．他在抗洪抢险中屡次立功，军衔．一再提升。
（职务和级别的名号）B．春天，燕子都在衔．泥筑巢。
（心里怀着）C．看到“窦娥衔．怨”这一场剧时，我不禁为窦娥鸣不平。
（用嘴含，用嘴叼）三、按照要求完成句子练习。
（16分）1．盘古是伟大的英雄。
（改为反问句）（8分）______________________________________________________________________ 2．盘古这个巍峨的巨人就像一根柱子，撑在天和地之间。
（用相同的修辞仿写）（8分）花丛中的蝴蝶________________________________________________________四、阅读课内片段，完成练习。
（50分）盘古倒下以后，他的身体发生了巨大的变化。
他呼出的气息变成了（）风和（）云；他发出的声音化作了（）雷声；他的左眼变成了太阳，照耀大地，他的右眼变成了月亮，给夜晩带来光明；他的四肢和躯干变成了大地的四极和五方的名山；他的血液变成了（）江河；他的汗毛变成了（）花草树木；他的汗水变成了（）雨露……伟大的巨人盘古，用他的整个身体创造了美丽的宇宙。
周练7
一、单项选择。
（）1. Do you go to school on foot every day ?Yes. My home is _____ the school.A. farB. far awayC. next toD. far away from( ) 2. _____ city do you like best?I like my hometown best.A. WhyB. HowC. WhoD. Which( ) 3. Madee lives in a wooden house _____ a river in Thailand.A. overB. onC. inD. at( ) 4. Anna lives ____ a tall building and her flat is ___ the sixth floor.A. in, onB. at, onC. on, atD. in, at( ) 5. Look at my big apple. I can ____ it with you.A. giveB. borrowC. lendD. share( ) 6. Which one can’t you find in the sitting room ?A. toiletB. sofaC. coffee tableD. armchair( ) 7. Are you going to have a party ___ the morning of April 1st ?A. inB. atC. onD. of( ) 8. Call me please when you ___ there.A. reach toB. get toC. arrive atD. arrive（）9. Harry ____ be at home because I saw him just now.A. mustn’tB. isn’t able toC. can’tD. may not( ) 10. She was listening to the radio _______ the telephone rang.A. whenB. whileC. as soon asD. after( ) 11. Neil will send _____.A. a video for SimonB. Simon to a videoC. a video to SimonD. Simon for a video( ) 12. The building has ___ floors. She lives on the _____ floor.A.five, twelfthB. fifth, twelveC. twelve, fiveD. twelve, fifth ( ) 13. His book is different ____.A. from myB. from mineC. of meD. of mine( ) 14. Every year, ____ people come to China to visit interesting places.A. millions ofB. many millionC. many millionD. million of ( ) 15. They are ____ carefully, but they can’t _____ anything.A. listening, listenB. listening, hearC. sounding, listenD. hearing, listen to二、词汇。
苏教版六年级下册数学周周练(七)试卷(附答案)
六年级数学周周练71.细心填空。
（1）东北方向也叫北偏（ ），西南方向也叫（ ）偏（ ）。
（2）在比例尺 的地图上，甲乙两地之间的距离为5厘米，甲乙两地实际相距（ ）千米。
（3）知道了物体的（ ）和（ ），就能确定物体的位置。
（4）游轮由港口出发，沿北偏西30o 的方向行驶可达桃花岛，它返回港口时可以沿（ ）偏（ ）（ ）o 的方向行驶。
2.反复比较、精挑细选。
①教学楼在操场的南面，宿舍在操场的东面，那么宿舍在教学楼的（ ）面。
A. 北B.东北C.西北②飞机场的雷达屏幕，以机场为观测点，飞机A 在北偏东30o 方向距离机场30千米处。
下面的描述错误的是（ ）。
A.飞机B 在南偏东60o 距离机场40千米处B.飞机C 在南偏西30o 距离机场10千米处C.飞机D 在北偏东30o 距离机场20千米处③如图，已知小芳家在小明家的北偏东70o 方向，那么小明家在小芳家的（ ）方向。
A 、南偏东20oB 、南偏西20oC 、南偏东70oD 、南偏西70o3.操作实践。
（1）下图是某市文化生活区方位图 (度量图上距离时，都取整厘米数)。
少年宫 图书馆 电影院 文化馆 N 0 400 800米影视城①少年宫在电影院（）偏（）（）O方向（）米处。
②影视城在电影院（）偏（）（）O方向（）米处。
（2）下图是某市3号公交车行车线路图，请根据线路图填空。
①3号公交车从起点站出发，向（）行驶到达青水公园，再向（）偏（）（ )O的方向行（）千米到达抗战纪念碑。
②由绿博园向（）偏（）（）O的方向行（）千米到达购物中心；从购物中心再向（）偏（）（）O的方向行（）千米到达人民公园。
（3）下图是以市政府为观测点，画出的平面图。
①市青少年活动中心位于市政府（偏）（）o方向（）米处。
②游泳馆在青少年活动中心正北方向1500米，在图中标出游泳馆的位置，从图中可以看出，游泳馆在市政府的（偏）方向，市政府在游泳馆的（偏）方向。
③实验小学位于市政府北偏西60o方向1200米，在图中标出实验小学的位置。
四年级语文上册第7周周练
四年级语文上册第7周周练（时间：20分钟总分：30分）得分：班级：姓名：等级：上周滚动纠错（5分）一、看拼音，写词语。
(4分)huàn xiǎng ào mì lián xìténg yún jià wù二、修改病句。
（1分）通过这些发明，使人类的生活大大改观。
__________________________________________________________________________________本周基础知识（25分）一、看拼音，写词语。
（共10分）yín chàng kòng xìjūn yún chóng diéyè bǐnɡxùn sè shān fēnɡ kū wěi mù sè jiànɡ luò二、用“√”给加点字选择正确的读音。
（3分）1.爬山虎触着．（zhe zhāo）墙的脚渐渐变成灰色，紧紧地在墙上巴着．（zhe zhāo）。
2.那家店铺．（pù pū）今天开业，只见门前张灯结彩，地上铺．（pù pū）着红色的地毯，呈现出一片热闹的景象。
3.无论敌人怎么诱惑，都无法降．低（xiáng jiàng ）他对祖国的热爱，坚决不肯投降．（xiáng ji àng ）。
三、读课文，选择正确的理解打上“√”。
（3分）1．爬山虎叶子的叶尖一顺儿朝上，在墙上铺得很均匀。
( )2．课文的作者是叶圣陶，他对爬山虎的观察细致入微，而且是连续观察了很长时间。
( )3.“不识庐山真面目，只缘身在此山中”，说明的人生道理是当局者迷旁观者清。
（）四、填空。
（5分）1.可怜九月初三夜，露似真珠月似弓。
第7周周周练(试题)译林版英语六年级上册
第7周周周练一、用所给单词的适当形式填空。
1. 一Where__ _(do) you _ (go) two weeks ago?一I (visit) Hong Kong.2. The visitor (talk) to Nancy about his country. He (show) her some photos now.3.一How (do) Mr. Green (go) to work yesterday?一He (be) on foot.4. Five days ago, Jim (walk) in the mountains. He (be) very tired.5. I like (play) games with my classmates .Last month, we (play) a lot.6. Mike and his sister (be) in Japan last year.7. (do) you (go) to parties the day before yesterday?8. Tom (have) a big lunch with his family last Spring Festival.二、翻译句子。
1. 你在假期里去了哪儿?Where you in the holiday?2. 学生们在国庆节之后返回了学校。
The students to school after the National Day holiday.3. 海伦和她的父母去了电影院。
他们看了一部有趣的电影。
Helen to the cinema her parents. They an interestlng .4. 我们钓到了一条大鱼。
但是我们没有吃。
We a big fish. But we it.5. 他打给你了，但是你不在家。
He you, but you at home.三、单项选择。
五年级语文上册第七周周练
同心思源实验学校五年级上册语文周练（7）一、看拼音，写词语。
（20分）pàn duàn tāi shēng tèzhēng shòu mìng( ) ( ) ( ) ( )zhēn guìjícùjǐng bào dào qiè( ) ( ) ( ) ( )fàn zuìjīn shǔ yín háng( ) ( )二、多音字组词。
6分cánɡ（）diào（）cháo（）藏调朝zànɡ（）tiáo（）zhāo（）三、组词。
10分肺（）夹（）藕（）肺（）抉（）矮（）嫌（）胎（）粘（）决（）四、把下列词语补充完整。
8分安然（）恙古往今（）庞然大（）气象万（）藕断（）连干干净（）低头（）节来无影去无（）五、选词填空。
16分突然果然居然仍然1、天下着大雨，解放军战士（）冒雨前进。
2、夜深了，博物馆里（）传出了急促的报警声。
3、气象预报员说：“今天有雨”。
到了下午三点钟，（）下起雨来。
4、我们在自家的后院荒地里种了花生，没过几个月，（）收获了。
稳定稳固1.当空气中的水蒸气达到饱和时，分散的水汽便依附着灰尘而形成（）的水滴。
2.这家工厂根基（），短时间内不会出现大的动荡。
适应适合3.经过很长很长的年代，鲸逐渐（）了海洋的生活。
4.过去的经验未必（）当前的情况。
六、判断下面句子的说明方法，在括号里填序号。
（10分）A.列数字B.举例子C.打比方D.作比较1.灰尘颗粒的直径一般在百万分之一毫米到几百分之一毫米之间。
（）2.“变色玻璃”能调节室内的光线，所以人们称它为“自动窗帘”。
（）3.不少人看到过象，都说象是很大的动物。
其实还有比象大得多的动物，那就是鲸。
（）4.齿鲸主要吃大鱼和海兽。
有一种号称“海中之虎”的虎鲸，常常好几十头结成一群，围住一头三十多吨重的长须鲸，几个小时就能把它吃光。
八上数学周练7
八上数学第七次周练试卷 （试卷总分：120分 考试时间：100分钟）班级： 姓名： 得分：一、选择题（每小题3分，共24分）1.在下列交通标志中，既是轴对称图形，又是中心对称图形的是 （ ）A B C D2.如图，□ABCD 中，下列说法一定正确的是 （ ）A. AC=BDB. AC⊥BDC. AB=CDD. AB=BC第2题图 第6题图 第7题图3.一次函数23-+=x y 的图像不经过 （ ）A.第一象限B.第二象限C.第三象限D.第四象限4.若分式21-+x x 的值为0，则x 的值为 （ ） A. -1 B. 0 C.1 D.±15.下列式子从左到右的变形一定正确的是 （ ）A.b a b a =++33B.bc ac b a =C. b a ba =22 D.b a b a =33 6. 如上图，大烧杯中装有一小烧杯，小烧杯中放入一个浮子（质量非常轻的空心小圆球）后再往小烧杯中注水，水流的速度恒定不变，小烧杯被注满后水溢出到大烧杯中，浮子始终保持在容器的正中间．用x 表示注水时间，用y 表示浮子的高度，则用来表示y 与x 之间关系的是（ ）A B C D7. 如图，矩形纸片ABCD 中，AB=6cm ，BC=8cm ，现将其沿AE 对折，使得点B 落在边AD 上的点B1处，折痕与边BC 交于点E ，则CE 的长为 （ ）A ．6cmB ．4cmC ．2cmD ．1cm8.在平面直角坐标系中，点A 、B 、C 的坐标分别是A(－2，5)，B(－3，－1)，C(1，－1)，在平面内找一点D ，使四边形ABCD 是平行四边形，那么下列点D 的坐标中，不满足条件的是（ ）A.(-6,3)B.(-2,3)C.(2,7)D.(0,-5)二、填空题（每题3分，共30分）9.49= . 10.在一次函数1)2(+-=x k y 中，y 随x 的增大而增大，则k 的取值范围为 .11.如图，在平行四边形ABCD 中，∠A=120°，则∠C= ．12.如图，矩形ABCD 的两条对角线相交于点O ，∠AOD=60°，AD=2，则AC 的长是 .第11题图 第12题图 第 13题图 第14题图 第16题图13.如图，在菱形ABCD 中，对角线AC,BD 相交于点O ，AB=8，E 是BC 中点，则OE 的长为 .14.将矩形ABCD 沿AE 折叠，得到如图图形.若∠CED ′=56°，则∠AED 的大小是 .15.已知x=-2时，分式ax b x +-无意义，x=4时，此分式的值为0，则a+b= . 16.一次函数y=kx+b （k ≠0）的图象如图所示，当y ＞0时，x 的取值范围是 .17.在分式①x 24， ②122+x x ③112--x x ④11--x x 中，属于最简分式的是 （填序号）. 18.如图，在平面直角坐标系中，O 为坐标原点，四边形OABC 是矩形，点A ，C 的坐标分别为A （10，0），C （0，4），点D 是OA 的中点，点P 为线段BC 上的点．小明同学写出了一个以OD 为腰的等腰三角形ODP 的顶点P 的坐标（3，4），请你写出其余所有符合这个条件的P 点坐标 ．三、解答题（共66分）19.（6分）（1）约分：233a a ； （2） 通分：ba c cb a 22103,5420.（6分））先化简，再求值12122+--a a a ,其中6=a 。
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2018-2019年度第一学期三年级数学周练（7）
一、填空。
1、
把( )个看成一份，有这样的( )份，所以就是的( )倍。
2、2的5倍是（）个（），5个7是（）的（）倍，
3、比4的7倍少3的数是（）。
50比7的（）倍多8
4、8的4倍是（），8是4的（）倍，8是（）的4倍。
（）的3倍是18， 3的（）倍是12。
5、 5米=（）毫米 2米3厘米=（）厘米
1075千克=（）吨（）千克600毫米=（）分米 2吨60千克=（）千克 3000米=（）千米
6、 6 2 3 9 5
+ 3 4 － 6 7 －
9 0 2 2 4 1 2 6
7、填表
科技书/本作文书/本文艺书/本
原有732 504
借出267 598
还剩206 325
班级姓名
8、小明今年9岁，爸爸比他大27岁，爸爸年龄是小明的（）倍。
9、一朵花有5片花瓣，3朵花有（）片花瓣。
10、画○，●是○的3倍。
●●●●●●
二、判断。
1、3的4倍就是求3个4相加是多少。
（）
2、6厘米的3倍和9厘米的2倍一样长。
（）
3、如果○×3=●，那么●是○的3倍。
（）
4、奶奶养了5只鸡，养的鸭是鸡的4倍，鸡和鸭一共养了20只。
（）
三、选择。
(把正确的序号写在括号里)
1、
要使●是○的2倍，再画（）个●。
A.3
B.4
C.5
D.2
2、丽丽看一本105页的书，第一天看了10页，第二天看的页数是第一天的2倍，
第三天应从第（）页看起。
A.30
B.31
C.32
3、下面的质量与1吨最接近的是（）。
A．1吨2千克 B．9999千克 C．999克
4、下面的长度和50米相等的是（ ）。
A.5千米
B.500分米
C.500毫米
四、口算。
520+350＝ 860-340＝ 47+330＝ 230-69＝ 620—180＝ 700-260＝ 610-290＝ 425-251≈ 497＋383≈ 470＋458≈ 5×9－35＝ 16÷2+2= 36-24÷6＝ 3×8-9＝ 18—12÷4=
五、笔算（带*要验算）。
1000－607= 689＋275= *969－288=
六、看图列式计算。
（1） （2） 男生 学生
女生 教师
？人 56人
七、解决问题。
1、小汽车能够乘坐5人，大客车乘坐的人数是小汽车的7倍，大客车能乘坐多少人？ 4人
？人
2、爸爸今年36岁，是小明的年龄的6倍，
（1）小明今年多少岁？
（2）去年爸爸的年龄是小明的多少倍？
3、李阿姨家养了6只公鸡和42只母鸡。
（1）母鸡的只数是公鸡的几倍？
（2）如果公鸡只数不变，要使母鸡只数是公鸡的9倍，应该增加多少只母鸡？（3）如果母鸡只数不变，要使母鸡只数是公鸡的6倍，应该增加多少只公鸡？。