七年级周考(4)
七年级周考英语试卷四
七年级周考英语试卷（四）一、语音题（每小题一分，共8分）找出划线部分读音与其他三个不同的单词。
( )1. A.history B.howl C.however D.honest( )2. A.however B.another C.corner D.her( )3. A.worst B. worm C.score D.worse( )4. A.crash B.star C. example D.photograph根据音标填写单词5.I don’t have much money. So I can’t not buy [ik'spensiv] ________ things.6.I can only see a [ɡru:p]________ of stars in the sky.7.China has a long ['histri] ________.8.It is raining outside, please take an [ʌm'brelə] ________.二、单项选择（每小题一分，共15分）（）1. I am ________ in reading different kinds of ________ books.A. interested, interestedB.interesting, interestingC.interested, interestingD.interesting, interested( ) 2. I have nothing to do ________ listening to music at weekends.A. as well asB. besideC.besidesD. except( ) 3. ________ fun and exciting.A.Collect stampsB.Collecting stamps areC.Collect stamp isD.Collecting stamps is ( ) 4. I didn’t see this star _________ from one group to another tonight.A. movesB. to moveC. moveD.moved( ) 5. It is easy ________ you to learn English in this way.A. ofB. forC. toD. with( ) 6. There is something wrong with my bike. I want to ________ it now.A. washB. buyC. sellD. mend( )7. ________ children _______ reading.A. Not all, likeB. Not all, likeC. Not every, likeD. Not every, likes ( ) 8. _______ you ________ go to work by bike?A. Did, use toB. Did, used toC. Do, use toD. Do, used ( ) 9. He fell asleep ________ he was reading a book.A. afterB. beforeC. whenD. if( ) 10. I like collecting stamps ________ animals _______ them.A. in, onB. with, onC. with, inD. in, at( )11. His _______ jump is ________ than his first one.A. two, betterB. second, bestC. second, betterD. second, good( ) 12. He went home ________ because he did badly in the maths exam.A. happyB. happilyC. unhappyD. unhappily( )13. They often take photographs of ________.A. each otherB. anotherC. one otherD. other( )14. He ________ his father.A. look likeB. looks likeC. is likeD. look likes( )15. That is not ________ pencial box. ________ is black.A. my, MyB. my, MineC. mine, MyD. mine, Mine三、完形填空（每小题一分，共10分）I’m not happy. I have too 1 rules in my family. I have to 2 at 6:00 every morning.I can’t 3 my friends after school, 4 I have to 5 my dog for a walk. I can’t watch TV on school nithts. And I have to 6 in bed by t en o’clock. 7 weekends, I have to clean my room and wash my clothes. Then I have to help my mother 8 dinner. Later I have to go to the Children’s Palace 9 the piano. I never have any fun. 10 can I do? ( )1. A. many B. much C. a few D. A few( )2. A. go to bed B. get up C. go home D. go to school( )3. A. watch B. look C. meet D. see( )4. A. so B. then C. however D. because( )5. A. bring B. take C. carry D.put( )6. A. be B. is C. am D. are( )7. A. In B. On C.With D. At( )8. A. make B. to make C. making D. do( )9. A. learn B. learning C. learns D. to learn( )10. A. Why B. What C. When D. How四、阅读理解（每小题2分，共20分）（A）Do you know fish come out of eggs when they are born (出生)? After the little fish comes out of the egg, it eats the food in the egg. When it is big, it leaves the egg. It swims in the warter. You can see the eyes and nose. Its ears are hidden (藏) in the head. Some fish eat other fish. Some fish have small mouths and teeth and they often eat plants.( )1. The fish are in ________ before they’re born.A. an eggB. the body of its motherC. the waterD. the body of its father ( )2. The fish eat ________ after they come out of the egg.A. some small fishB. big fish in the waterC. other eggsD. the food in the egg ( )3. When the fish is big, it ________.A. goes away from the eggB. doesn’t come out of the eggC. eats the eggsD. swims in the egg( )4. Which is right?A. The fish has no ears.B. We can see the fish’s nose, eyes and ears.C. The fish has ears in its head.D. The fish has no nose.( )5. The passage (文章) tells us ________.A.all big fish eat small fishB. fish with small mouths and teeth eat plantsC. all fish have big mouths and teethD. fishes don’t have ears( B )A very young officer was at a station. He was on his way to visit his mother in another town, and he wanted to telephone her to tell her the time of this train, so that she could meet him at the station in her car. He look in all his pockets, but he did not have the right money for the telephone, so he went outside and looked around for someone to help him.At last and old soldier came by, and the young officer stopped him and said, “Have you got chage (零钱) for the pence (便士)?”“Wait a moment,” the old soldier answered. He began to put his hand in his pocket, “I’ll see whether I can help you.”“Don’t you know how to speak to an officer?” the young man said angrily. “Now let’s start again. Have you got change for ten pence?”“No, sir,” the old soldier answered quickly.( )6. The young officer and his mother lived ________.A. in the same townB. in different town.C. in anoter townD. in the other town ( )7. The young officer wanted to telephone his mother to tell her ________.A. that he was going to visit herB. where his train would leave forC. what time his train would arrive at the stationD. that he was then at the station ( )8. He looked around for help because he ________.A. had no money to make the phone callB. did not know where to make the phone callC. need some change for the phone callD. wanted to get change from the old soldier ( )9. The young officer was angry because he thought the old soldier _________.A. was polite to himB. was not polite to himC. didn’t know how to speak to himD. didn’t like to help him at all( )10. Which of the following is not true?A. The old soldier wanted to help the young officer, but he didn’t have any change..B. The young officer wanted his mother to meet him at the station.C. He wanted the old soldier to speak to him in a polite way.D. He didn’t know the soldier before.五．单词拼写（每小题1分，共7分）1. He is good at taking photos and he is one of the best p____________ in the world.2. I love the country, e___________ in spring.3. I can’t r__________ his name.4. The children are playing a very i__________ game.5. I don’t like going out a__________ at night.6. A__________ to me, it is good news.7.The final s__________ was 4-3.六、完成句子（每格1分，共40分）1.我小时候没有很多玩具。
测试卷04(2.1-2.3)(原卷版)-2024-2025学年七年级科学上册周考限时测试卷
浙教版七年级上册周考卷2.1-2.3一、单选题1．下列有关事实：①胡克通过显微镜发现细胞；②施旺发表《关于动植物的结构和一致性的显微研究》；③魏尔啸提出一切细胞来自细胞。
按细胞学说建立过程，下列排列顺序正确的是（）。
A．①②③B．③①②C．①③②D．②①③2．小科用显微镜观察洋葱鳞片叶表皮细胞的临时装片，如图所示。
下列叙述错误的是（）A．换上高倍物镜后会使视野变暗B．换用高倍物镜时需转动物镜转换器C．换上高倍物镜前需将装片向左移动D．换上高倍物镜后若物像模糊不清，可调节细准焦螺旋3．在制作和观察洋慧表皮细胞临时装片实验的过程中，对下列出现的情形描述正确的是（）A．甲图调节显微镜②结构使镜简下降时，眼睛应注视①B．乙图当目镜不变，物镜由①换成②时看到的细胞数目减少，视野变暗C．丙图中要把物像移到视野中央，应将载玻片向左上方移动D．丁图中黑色圆圈是洋葱表皮细胞4．糖醋蒜头有酸甜味，说明()A．大蒜的细胞不能控制物质的进出B．糖和醋并没有进入细胞内C．糖和醋都是细胞需要的物质，所以都能通过细胞膜进入细胞内D．细胞已死，细胞膜失去控制能力5．若要使位于显微镜视野左下角的图像移至视野中央，移动玻片的方向是（）A．右上角B．右下角C．左上角D．左下角6．猪笼草是一种常绿植物，长有奇特的捕虫叶能捕食小虫。
将其作为植物的主要依据是（）A．能进行光合作用B．能对刺激作出反应C．能进行繁殖后代D．能进行遗传和变异7．用显微镜观察洋葱表皮细胞的实验过程中，视野中出现以下现象，通过操作可以达到相应目的的是（）A．针对现象甲，换成高倍物镜，可使视野变明亮B．针对现象乙，向左上方移动装片，可使右下角的物像位于视野中央C．针对现象丙，调节细准焦螺旋，可使物像清晰D．针对现象丁，调用大光圈，可使黑圈消失8．用高倍物镜观察洋葱根尖的细胞比用低倍物镜观察到的细胞数目、大小和视野的明暗情况依次为（）A．多、大、亮B．少、小、暗C．多、小、暗D．少、大、暗9．下列现象不能说明同种生物性状差异性的是（）A．黑马和白马毛色有差异B．黄种人和白种人鼻梁有高低C．黑藻和衣藻形态各异D．橙子有的甜，有的不甜10．洪濑鸡爪是闻名全国的特色小吃。
七年级生物上学期第四周周考试卷(含解析) 新人教版-新人教版初中七年级全册生物试题
2015-2016学年某某省某某中国教育学会中英文实验学校七年级（上）周考生物试卷（4）一、单项选择题每题5分1．近年来我国某某某某等西南地区持续遭遇干旱天气，致使河流干涸，鱼虾死亡，农作物大面积减产甚至绝产．这种现象说明（）A．生物能适应环境B．生物能影响环境C．环境能影响生物D．生物能生长和繁殖2．下列主要体现生物适应干旱环境的是（）A．鱼类的季节洄游（一些鱼类在特定时期，主动、集群的水平移动）B．蛾类的趋光性C．人参在林下生存好D．仙人掌的叶刺3．若如图表示某个生态系统中的生物部分，则图中没有画出的是（）A．生产者B．消费者C．分解者D．分解者和生产者4．分析如图，以下说法正确的是（）A．此图表示生态系统的组成B．图中的生物构成了食物网C．此图表示生态系统中的生物部分D．图中的鸟和虫所需能量最终都来自于植物体内的有机物5．下列不属于生物圈X围的是（）A．大气圈的下层 B．水圈的大部C．岩石圈的上层 D．地球的内部6．如图是某农田生态系统食物网的示意图，下列叙述正确的是（）A．该食物网中有4条食物链B．该食物网中，戊与丁既是捕食关系，也是竞争关系C．该食物网中，戊获得的能量及毒素最多D．该农田生态系统的最终能量来自于甲7．某淡水生态系统中有这样一条食物链：“浮游植物→剑水蚤→蜻蜓幼虫→小鱼→大鱼”，当这水域被排放了难分解的有毒物质﹣﹣汞后，一段时间，体内汞的含量最多的生物是（）A．浮游植物 B．剑水蚤C．小鱼 D．大鱼8．如图为一个生态系统中某些生物的相对数量关系，这些生物构成了一条食物链．在这条食物链中物质和能量流动的方向是（）A．甲→乙→丙→丁B．丙→丁→甲→乙C．丙→丁→乙→甲D．丁→丙→乙→甲9．生态系统的成分越复杂，自动调节能力越强，下面调节能力最强的是（）A．草原 B．森林 C．农田 D．沙漠10．利用显微镜观察变形虫的运动方式时，视野中的变形虫伸出伪足向左上方缓慢运动，观察一段时间后，要使变形虫仍在视野中央，载玻片的移动方向为（）A．右下方B．右上方C．左上方D．左下方11．用显微镜观察人的口腔上皮细胞临时玻片标本时，先用显微镜的15×物镜观察，然后换上45×的物镜继续观察，其结果是后者（）A．视野较亮，细胞数目较少B．视野较暗，细胞数目较少C．视野较暗，细胞数目较多D．视野较亮，细胞数目较多12．在显微镜下观察写在透明纸片上的“p”字母时，物像是（）A．b B．d C．p D．q13．使用显微镜进行观察，镜筒下降时眼睛要注视着（）A．目镜 B．物镜 C．载物台D．镜筒14．莉莉使用显微镜观察人血涂片时，在视野中清晰地看到许多红细胞，却看不到白细胞，如图所示．已知白细胞比红细胞大，莉莉需再利用下列哪一步骤，才最有可能观察到白细胞（）A．放大光圈 B．移动玻片 C．滴加蒸馏水D．更换高倍物镜15．普通光学显微镜起放大作用的结构是（）A．遮光器和目镜 B．遮光器和物镜C．遮光器和反光镜D．目镜和物镜16．显微镜调节光线强弱的结构是（）A．反光镜B．遮光器C．通光孔D．镜筒17．用下列镜头观察临时装片，若想在视野中观察到最多的细胞，应选用的物镜（①、②、③）和目镜（甲、乙、丙）的组合是（）A．①和丙B．①和甲C．③和甲D．③和丙18．与显微镜的视野明暗没有关系的是（）A．反光镜B．遮光器C．通光孔D．显微镜的放大倍数19．关于显微镜各部分名称和作用的叙述，不正确的是（）A．遮光器能调节光线强弱 B．转换器能调换目镜C．细准焦螺旋能升降镜筒 D．压片夹能固定玻片20．如图为某同学在显微镜下观察到的细胞图象，仔细观察并分析：从图象A变成图象B是做了怎样的处理（）①低倍镜换成了高倍镜；②向右下移动了玻片；③向左上移动了玻片；④转动细准焦螺旋．A．②①④B．③①④C．③④①D．①②④2015-2016学年某某省某某中国教育学会中英文实验学校七年级（上）周考生物试卷（4）参考答案与试题解析一、单项选择题每题5分1．近年来我国某某某某等西南地区持续遭遇干旱天气，致使河流干涸，鱼虾死亡，农作物大面积减产甚至绝产．这种现象说明（）A．生物能适应环境B．生物能影响环境C．环境能影响生物D．生物能生长和繁殖【考点】环境对生物的影响．【分析】环境中影响生物生活的各种因素叫环境因素，分为非生物因素和生物因素．非生物因素包括：光、温度、水、空气、土壤等．生物因素是指环境中影响某种生物个体生活的其他所生物，包括同种和不同种的生物个体．【解答】解：环境中影响生物生活的各种因素叫环境因素，分为非生物因素和生物因素．非生物因素包括：光、温度、水、空气、土壤等．生物因素是指环境中影响某种生物个体生活的其他所生物，包括同种和不同种的生物个体．长江中下游地区遭遇了50年一遇的特大干旱，河流干涸致使鱼虾死亡，农作物大面积减产甚至绝产，表明环境中的水对生物的影响．故选：C．【点评】解答此类题目的关键是运用所学知识对某些自然现象做出科学的解释．2．下列主要体现生物适应干旱环境的是（）A．鱼类的季节洄游（一些鱼类在特定时期，主动、集群的水平移动）B．蛾类的趋光性C．人参在林下生存好D．仙人掌的叶刺【考点】生物对环境的适应．【分析】生物必须适应环境才能生存，如沙漠上的植物必须耐旱才能生存．生物也能影响环境如蚯蚓改良土壤，千里之堤毁于蚁穴，植物的蒸腾作用可以增加空气湿度等．【解答】解：A、鱼类的季节涸游，主要是受季节（温度变化）影响形成的，A错误；B、蛾类的趋光性，蜈蚣白天藏在洞中，夜间出来觅食的行为属于昼夜节律行为．主要受光的影响，B错误．C、人参是弱光性植物，密林下阳光较少，光照强度较弱，因此人参在密林下才能生长好主要是受阳光因素影响形成的，C错误．D、沙漠地区干旱缺水，仙人掌叶变为刺状是为了降低蒸腾作用减少水的散失是对沙漠干旱环境的适应，D正确．故选：D【点评】解答此类题目的关键是理解生物适应环境的同时也能影响环境．3．若如图表示某个生态系统中的生物部分，则图中没有画出的是（）A．生产者B．消费者C．分解者D．分解者和生产者【考点】生态系统中的食物链和食物网．【分析】食物链反映的是生产者与消费者之间吃与被吃这种关系即捕食关系．食物链的正确写法是：生产者→初级消费者→次级消费者…注意起始点是生产者．【解答】解：生态系统包括非生物部分和生物部分，其中的生物部分包括生产者、消费者和分解者，生产者是绿色植物，消费者注意是动物，分解者主要是细菌和真菌．图中草属于生产者，鼠、蛇、鹰、兔是动物属于消费者．因此，图中没有画出的生态系统的生物部分是分解者．故选C【点评】解答此类题目的关键是理解掌握生态系统的组成及各部分的作用．4．分析如图，以下说法正确的是（）A．此图表示生态系统的组成B．图中的生物构成了食物网C．此图表示生态系统中的生物部分D．图中的鸟和虫所需能量最终都来自于植物体内的有机物【考点】生态系统的概念．【分析】（1）生态系统的组成包括非生物部分和生物部分．非生物部分有阳光、空气、水、温度、土壤（泥沙）等；生物部分包括生产者（绿色植物）、消费者（动物）、分解者（细菌和真菌）．（2）生态系统的能量最终来源于太阳能．（3）食物链反映的是生产者与消费者之间吃与被吃这种关系的，所以食物链中不应该出现分解者．食物链的正确写法是：生产者→初级消费者→次级消费者…注意起始点是生产者．【解答】解：AC、图中表示出了生产者（绿色植物）、消费者（动物）、分解者（细菌和真菌）．因此此图没有表示出完整的生态系统，只表示了生态系统中的生物部分，故A错误，C正确；B、图中的生物只构成了食物链，故B错误；D、图中的鸟和虫所需能量最终都来自于太阳能．故D错误．故选：C．【点评】解答此类题目的关键是理解掌握生态系统的组成和组成生态系统各部分的功能．5．下列不属于生物圈X围的是（）A．大气圈的下层 B．水圈的大部C．岩石圈的上层 D．地球的内部【考点】生物圈的X围．【分析】生物圈是地球上的所有生物与其生存的环境形成的一个统一整体，是最大的生态系统，据此解答．【解答】解：生物圈的X围：以海平面为标准来划分，生物圈向上可到达约10千米的高度，向下可深入10千米左右的深度，厚度为20千米左右的圈层，包括大气圈底部、水圈的大部和岩石圈的表面，所以D符合题意．故选：D．【点评】解答此类题目的关键是熟记生物圈的X围、理解生物圈的概念．6．如图是某农田生态系统食物网的示意图，下列叙述正确的是（）A．该食物网中有4条食物链B．该食物网中，戊与丁既是捕食关系，也是竞争关系C．该食物网中，戊获得的能量及毒素最多D．该农田生态系统的最终能量来自于甲【考点】生态系统中的食物链和食物网．【分析】如图所示：甲→乙→丙→丁→戊；甲→己→丁→戊；甲→己→戊；【解答】解：A、该食物网中有3条食物链，A错误；B、该食物网中，由于戊以丁为食物，戊与丁是捕食关系，又由于它们在同一营养级，也是竞争关系，B正确；C、该食物网中，戊获得的毒素最多，根据能量流动的特点，获得的能量最少，C错误D、该农田生态系统的最终能量来自于太阳能，D错误；故选：B【点评】解答此类题目的关键理解生物之间的相互关系．7．某淡水生态系统中有这样一条食物链：“浮游植物→剑水蚤→蜻蜓幼虫→小鱼→大鱼”，当这水域被排放了难分解的有毒物质﹣﹣汞后，一段时间，体内汞的含量最多的生物是（）A．浮游植物 B．剑水蚤C．小鱼 D．大鱼【考点】生态系统中的食物链和食物网．【分析】在生态系统中，物质和能量沿着食物链和食物网流动，有毒物质能够沿着食物链不断积累．【解答】解：在生态系统中，有害物质可以通过食物链在生物体内不断积累，其浓度随着营养级别的升高而逐步增加，这种现象叫生物富集．物质和能量沿着食物链和食物网流动的．营养级越高生物（越靠近食物链的末端），体内所积累的有毒物质越多（富集）．食物链：“浮游植物→剑水蚤→蜻蜓幼虫→小鱼→大鱼”，该食物链中体内有毒物质积累最多的生物是大鱼，因为大鱼的营养级最高．故选：D【点评】解此题的关键：是食物链的末端生物，体内所积累的有毒物质最多．8．如图为一个生态系统中某些生物的相对数量关系，这些生物构成了一条食物链．在这条食物链中物质和能量流动的方向是（）A．甲→乙→丙→丁B．丙→丁→甲→乙C．丙→丁→乙→甲D．丁→丙→乙→甲【考点】生态系统中物质和能量的流动．【分析】在生态系统中物质和能量是沿着食物链和食物网传递并且逐级递减．【解答】解：由于物质和能量是沿着食物链和食物网传递并且逐级递减．在生态系统中数量最多的是生产者，越往后数量越少．根据数量的多少可以从多到少排序即食物链的顺序．因此在这条食物链中物质和能量流动的方向是丙→丁→乙→甲．故选：C【点评】理解物质和能量在沿着食物链传递过程中逐级递减即从多到少，是解答本题的关键．9．生态系统的成分越复杂，自动调节能力越强，下面调节能力最强的是（）A．草原 B．森林 C．农田 D．沙漠【考点】生态系统具有一定的自我调节能力．【分析】生态系统具有一定的自我调节能力，而这种能力受生态系统中生物的种类和数量所限制．物质能量是沿着食物链、食物网流动的，并逐级减少．据此解答．【解答】解：生态系统中各种生物的数量和所占的比例是相对稳定的状态．这种平衡是一种动态平衡，之所以会出现这种平衡是因为生态系统具有一定的自我调节能力，由于这种能力与生态系统中生物的种类和数量有关，生物的种类和数量越多，营养结构越复杂，这种能力就越强，反之，就越弱；因此生态系统的成分越复杂，其自动调节能力就越越强．选项中森林的生物成分最复杂，生物的数量最多，调节能力最强．故选：B【点评】掌握生态系统的自我调节能力与生物种类和数量的关系，理解物质能量沿着食物链、食物网流动的特点，即可正确解答本题．10．利用显微镜观察变形虫的运动方式时，视野中的变形虫伸出伪足向左上方缓慢运动，观察一段时间后，要使变形虫仍在视野中央，载玻片的移动方向为（）A．右下方B．右上方C．左上方D．左下方【考点】显微镜的基本构造和使用方法．【分析】在显微镜中成的像是倒像的，如果发现物像位于视野的右上方，它实际上位于玻片标本的左下方，所以要移到中央，应向右上方移动．我们可以这样记忆：物像位于视野的哪个方向，就向哪个方向移动，才能移到视野的中央．【解答】解：用显微镜观察玻片标本时，将位于视野中央的玻片标本向右上方移动，此时视野中的物像移动的方向是左下方．故选：C【点评】解答本题的关键是理解显微镜的成像特点是显微镜成倒立的像．物像的移动方向和玻片的移动方向相反．11．用显微镜观察人的口腔上皮细胞临时玻片标本时，先用显微镜的15×物镜观察，然后换上45×的物镜继续观察，其结果是后者（）A．视野较亮，细胞数目较少B．视野较暗，细胞数目较少C．视野较暗，细胞数目较多D．视野较亮，细胞数目较多【考点】显微镜的基本构造和使用方法．【分析】显微镜的低倍镜视野较亮，细胞数目较多；显微镜的高倍镜视野较暗，细胞数目较少．【解答】解：先用显微镜的15×物镜观察，然后换上45×的物镜继续观察，就是换成高倍镜．显微镜换成高倍镜后，放大倍数变大，看到的细胞的体积变大，视野的X围变小了，看到的细胞的数目变少了，透进的光线少了，所以视野变暗．故选B．【点评】正确使用显微镜是初中生必须具备的基本操作技能，平时一定要多动手，多思考，做到熟能生巧，才能较好的解决实践中遇到的问题．12．在显微镜下观察写在透明纸片上的“p”字母时，物像是（）A．b B．d C．p D．q【考点】使用显微镜和制作临时装片．【分析】显微镜成倒立的像，“倒立”不是相反，是旋转180度后得到的像．即上下相反、左右相反．【解答】解：显微镜看到的物像不但上下颠倒，左右也颠倒．做此类题有个小诀窍，就是把这个在显微镜下看到的物像写到一X小纸上，然后把这X纸旋转180度后，再看就是左右上下颠倒的图象了．“p”旋转180度后得到的是“d”．所以在显微镜下观察写在透明纸片上的“p”字母时，物像是d．故选：B．【点评】解答本题的关键是理解显微镜成倒立的像．13．使用显微镜进行观察，镜筒下降时眼睛要注视着（）A．目镜 B．物镜 C．载物台D．镜筒【考点】显微镜的基本构造和使用方法．【分析】在使用显微镜观察下降镜筒的时候，眼睛要注视物镜，以免物镜压破玻片标本，损坏物镜或弄破玻片标本．【解答】解：当镜筒下降的时候，如果只注视目镜，我们看到不物镜的位置，就容易让物镜压碎了玻片标本，所以在镜筒下降时我们要注视物镜防止其压碎玻片标本．而观察寻找物像时，是在镜筒上升的过程中进行的，眼要看着目镜．故选：B．【点评】回答此题的关键是要明确显微镜的基本构造和使用方法．14．莉莉使用显微镜观察人血涂片时，在视野中清晰地看到许多红细胞，却看不到白细胞，如图所示．已知白细胞比红细胞大，莉莉需再利用下列哪一步骤，才最有可能观察到白细胞（）A．放大光圈 B．移动玻片 C．滴加蒸馏水D．更换高倍物镜【考点】观察血涂片．【分析】血细胞包括红细胞、白细胞和血小板，红细胞的数目最多，没有细胞核；白细胞的体积最大，数目最少，具有细胞核；血小板没有细胞核．据此解答：【解答】解：在三种血细胞中，红细胞的数量最多，成年人每立方毫米血液里红细胞的数量，男子为500万个左右，女子平均为420万个左右；而白细胞每立方毫米血液中有5000～10000个；血小板的含量为每立方毫米血液中10万﹣﹣30万个．因此用显微镜观察人的血涂片，在视野中观察到数量最多的细胞是红细胞．在视野中清晰地看到许多红细胞，却看不到白细胞，已知白细胞比红细胞大，所以，A放大光圈，C滴加蒸馏水，D更换高倍物，都没有用，只有B移动装片才最有可能观察到白细胞．故选：B【点评】解答此类题目的关键是知道三种血细胞的数量以及特点．15．普通光学显微镜起放大作用的结构是（）A．遮光器和目镜 B．遮光器和物镜C．遮光器和反光镜D．目镜和物镜【考点】显微镜的基本构造和使用方法．【分析】本题考查显微镜的使用，可结合着显微镜的结构示意图掌握．【解答】解：显微镜的镜头有目镜和物镜两种，物镜是安装在转换器上的，因此物镜有螺丝纹．目镜是直接放在镜筒里的，因此目镜无螺纹．显微镜的放大倍数等于目镜和物镜放大倍数的乘积．故选：D【点评】解答此题的关键是明确显微镜的放大倍数等于目镜和物镜放大倍数的乘积．要想做好此类题目，一定要多动手，多思考．16．显微镜调节光线强弱的结构是（）A．反光镜B．遮光器C．通光孔D．镜筒【考点】显微镜的基本构造和使用方法．【分析】在显微镜的结构中，能够调节光线强弱的结构是遮光器和反光镜．遮光器上有大小不等的光圈，大光圈进入镜筒的光线多，视野亮，小光圈进入镜筒的光线少，视野暗．反光镜有平面镜和凹面镜，凹面镜可以聚光，是视野中光线更强．据此解答：【解答】解：A、反光镜有平面镜和凹面镜，凹面镜可以聚光，是视野中光线更强，反光镜可以调节光线的强弱，A选项符合题意．B、遮光器上有大小不等的光圈，要使视野中光线变强，用较大光圈．B选项符合题意．C、反光镜反射的光线可以通过通光孔反射到物镜中，不能调节光线的强弱．C选项不符合题意．D、镜筒是安装镜头的结构，不能调节光线强弱．D选项不符合题意．故选：A B【点评】回答此题的关键是要明确调节光线强弱的结构是遮光器和反光镜．17．用下列镜头观察临时装片，若想在视野中观察到最多的细胞，应选用的物镜（①、②、③）和目镜（甲、乙、丙）的组合是（）A．①和丙B．①和甲C．③和甲D．③和丙【考点】显微镜的基本构造和使用方法．【分析】此题考查的是显微镜的成像特点．显微镜的放大倍数=物镜倍数×目镜倍数．物镜倍数越高，镜头越长；目镜倍数越高，镜头越短；显微镜成倒立的像：物像与实物相反，上下倒置，左右反向．【解答】解：显微镜的放大倍数越小，看到的细胞数目越多，因此使视野中观察到的细胞数目最多，应选用放大倍数小的目镜和物镜，其目镜和物镜的组合是长目镜甲和短物镜①，故选：B．【点评】解答此类题的关键是根据所学知识会对显微镜使用的某一环节作出解释．18．与显微镜的视野明暗没有关系的是（）A．反光镜B．遮光器C．通光孔D．显微镜的放大倍数【考点】眼球的结构和视觉的形成．【分析】本题考查的是使用显微镜出现的情况，首先明确显微镜的结构特点．【解答】解：在显微镜的结构中，遮光器可以调节光线的强弱，上有大小光圈．当外界光线较暗时使用大光圈，当外界光线较亮时使用小光圈；反光镜能反射光线，上有平面镜和凹面镜两个面．当外界光线较强时使用平面镜，当外界光线较弱时使用凹面镜．所以在显微镜对光时，与调节视野明暗程度有关的是遮光器和反光镜．高倍物镜的视野要比低倍物镜的视野暗，换用不同的物镜，视野的亮度不同．对显微镜视野亮度没有直接影响是通光孔．故选：C【点评】显微镜的使用是考查的重点，可结合着显微镜的结构示意图掌握，难度一般．19．关于显微镜各部分名称和作用的叙述，不正确的是（）A．遮光器能调节光线强弱 B．转换器能调换目镜C．细准焦螺旋能升降镜筒 D．压片夹能固定玻片【考点】显微镜的基本构造和使用方法．【分析】此题考查显微镜的构造和使用．据此解答．【解答】解：A、遮光器上有大小不等的光圈，转动遮光器使不同的光圈对准通光孔，可以调节光线的强弱．不符合题意．B、转换器上安装的是物镜，转动时可以调换物镜不能调换目镜．符合题意．C、转动细准焦螺旋能使镜筒小X围升降，使像更清晰．不符合题意．D、压片夹在载物台上起固定玻片的作用．不符合题意．故选：B【点评】此题解答从显微镜各部分的名称和作用，及操作方法上入手．20．如图为某同学在显微镜下观察到的细胞图象，仔细观察并分析：从图象A变成图象B是做了怎样的处理（）①低倍镜换成了高倍镜；②向右下移动了玻片；③向左上移动了玻片；④转动细准焦螺旋．A．②①④B．③①④C．③④①D．①②④【考点】显微镜的基本构造和使用方法．【分析】根据显微镜的正确操作方法分析解答．【解答】解：从图中可看出，A物像原来在视野的左上方，而B物像在视野的右下方．我们在显微镜下看到的物像是上下左右均颠倒的物像，所以我们移动玻片标本时，标本移动的方向正好与物像移动的方向相反．在A图中物像位于视野的偏左上方，应该向左上方移动玻片标本，物像才向右下方移动移到视野的右下方．A图中的细胞体积小，而B图中细胞的体积大，故而由A变成B是由低倍镜换成了高倍镜；换上高倍物镜后物像只是有点模糊，一般转动细准焦螺旋就能使用物像更加清晰．故选：B【点评】解本题时，要注意换高倍镜会出现以下问题：一是视野会变窄，二是视野会变暗，三是视野会变模糊．针对以上问题思考操作步骤．。
七年级英语上学期第4周周练试题试题
城东中学2021-2021学年上期七年级英语第四周练试卷一．制卷人：歐陽文化、歐陽理複；制卷時間：二O二二年二月七日二．字母书写(要有大小写，书写工整) (5分〕五个元音字二、看音标写出字母，。
(13分，每空1分)[kju:] [eks] [wai] [d3i:][eit∫] [vi:] [kei] [em][ɑ:][es] [d3ei] [zi:][zed][′d∧blju:]三．词汇(英汉互译及根据音标写单词)。
(35 分〕1.中国____________2.欢送___________3.nice__________4.too______________5.这个_____________6.教师_______________7.下午____________ 8.再见_____________ 9.morning________________10.我的_____________ 11.相识，遇见_________ 12.Mr.________________13.安康的，晴朗的___________ 14.看到，明白____________15、[mi:t] ____________ 16、 [ðɪs] ____________17、[hɪə(r)] ____________18、[hə'ləʊ] __________ 19、[θæŋk] _______ 20、[mɒm] __________21、[haʊ] __________22、 [ɪz] _________ 23、[a：(r)] __________24、[nɒt] ____________ 25、[nəʊ] __________ 26、 [du:] ____________27、[aɪ]__________ 28、 [ju:] ________ 29、 [maɪ] ____________30、 [ənd_________] 31、[dæd] __________ 32、 [əʊ'keɪ] __________33、[jes] __________ 34、 [mɪs] _________ 35、 [haɪ] ____________四.单项选择。
内蒙古乌拉特中旗第二中学七年级英语下学期周考练习四(无答案) 仁爱版
七年级英语（下）周考题班级姓名分数一、单选（每题2分，共20分）( ) 1. I plan there by bus.A. goingB. to goC. goD. goes( ) 2.He was born May 8th,2000.A. inB. onC. atD. of( ) 3. He play the piano now, but he play it two years ago.A.couldn’t ,canB. can, couldn’tC. can, could( ) 4. Rose can play ______ gui tar but she can ’t play _____ soccer. A. the ,theB.the, /C. / theD. / , /( ) 5.Tom, can you sing songs dance to disco ?.A. orB. butC. doD. and( ) 6. I can draw. I can do it .A. fewB. a fewC. littleD. a little( ) 7. He is playing soccer. But he couldn’t do it at all .A. agoB. beforeC. firstD. last( ) 8. Jane, please these books that classroom.A. take, toB. bring , in( ) 9. Each of us so happy yesterday .A. isB. areC.wasD. were( )10. ---Where did you buy it? --- I made it .A. by handsB. by a handC. by hand二、根据句意及首字母填空：（每空2分，共10分）11. September is the n month of a year.12. --What’s the m with you? ---I hurt myself.13.We h a birthday party for Kangkang at his home last Sunday .14. I cooked a d meal my mother.15. I missed the chair and f down.三、根据汉语提示完成句子：（每空2分，共20分）16. (什么形状) is it?17. He can (数数字) from one to one (一百)?18.Kangkang a (许愿) at his birthday party yesterday .19. At of ten（十岁) , Jim could swim .20. It’s (到……的时间了) outdoor activities ?四、根据要求完成句子：（每空2分，共20分）21. It’s June 3rd today. (对划线部分提问)the today?22. He had a good time at Kangkang’s home last Sunday. (同义句转换)He at Kangkang’s home last Sunday.23. Tom played football on the playground last Sunday. (对划线部分提问)What Tom on the playground last Sunday?24. Maria danced very well. (一般疑问句)？Maria very well ? 25. Jane can ride a bike. (否定句) Jane a bike . 五、情景交际。
人教版七年级下英语Unit4 周考卷(有答案)
七年级下期英语Unit4周考卷第一部分语言知识运用(共二节，满分40分)第一节单项选择(共10小题，每小题1分，满分10分)（）1. —Does Lucy have to wear the uniform at school? —________. It's our school rule.A. Yes，she canB. Yes，she doesC. No，she can'tD. No，she doesn't （）2. —Can we eat in the classroom，Mr. Li? —________，but you can eat in the dining hall.A. Yes，you canB. Yes，you doC. No，you can'tD. No，you don't（）3. —________ arrive late for school. —I won't，Mom.A. Don'tB. NoC. Aren'tD. Can't（）4. —Do you usually help your mother make ______ dinner?—Yes，and I often do ______ dishes after dinner.A. the; aB. /; theC. a; /D. a; a（）5. —Don't arrive late ________ class. —I know we must be ________ time every day.A. to; inB. for; inC. to; onD. for; on（）6. —Why does your mother often go to bed late?—Because she has ________ clothes to wash every day.A. too manyB. too muchC. many tooD. much too（）7. —I can't play basketball after school，Li Ming. —Lu Ping，I can't，________.A. tooB. alsoC. onlyD. either（）8. It's 8：40，and I have a test at 9：00. So I ________ leave home now.A. canB. mustC. can'tD. mustn't（）9. —Jack，your room is too ________. —Sorry，Mom. I'll clean it right away(马上).A. cleanB. strictC. dirtyD. funny（）10. —Don't run in the hallways，Dave. —________，Ms. Clark.A. Thank youB. Excuse meC. SorryD. That's not for sure 第二节完形填空(共15小题，每小题2分，满分30分)ADear Scott,I need your help. I feel___11____because I find it's difficult to be a good teacher. I want every student in my class to be good. Many of them are good. But some of them are not. They don't____12____the rules. Some don't arrive at school 13 time. They live near the school，but they are always late. Some don't listen to me in my class. They either play games 14 read storybooks. Some are always noisy and can never keep quiet…I know I can't be angry(生气的)with them. But 15 ? You are a great teacher,and you make friends with your students. Can you tell me what I can do?（）11. A. sorry B. funny C. busy D. old（）12. A. have B. finish C. remember D. follow（）13. A. in B. on C. at D. with（）14. A. or B. and C. between D. to（）15. A. what B. when C. how D. whyBThere are lots of rules at Jenny's school. She agrees with some ___16___them. Forexample, they can't arrive ___17____ for class, they can't run in the hallways, and they can't eat in class. All ___18____ rules are okay because they're reasonable (合理的).But there are some rules Jenny___19____agree with. For example, at her school they have to___20____uniforms and they can't wear jeans. But she thinks jeans are 21 because they're comfortable. At school, they can't listen to music in art class. Jenny doesn't agree with this rule. She thinks listening to music in art class is okay.Jenny also has to follow many rules at home. For example, 22 she wants to watch TV, she has to finish her homework first. And she can't go out with her friends ___23____school nights, that is, from Monday to Friday. She also has to clean her room 24 week. Luckily, she doesn't 25 take out the trash (垃圾).（）16. A. of B. at C. by D. under（）17. A. busy B. late C. scary D. happy（）18. A. this B. that C. these D. it（）19. A. didn't B. isn't C. don't D. doesn't（）20. A. wears B. wear C. wore D. wearing（）21. A. good B. heavy C. bad D. expensive（）22. A. because B. so C. but D. if（）23. A. on B. in C. from D. to（）24. A. two B. next C. every D. last（）25. A. have to B. must C. can D. should第二部分阅读理解(共二节，满分25分)第一节阅读理解(共10小题，每小题2分，满分20分)AWelcome to our museum (博物馆). It's free and you can come only with your ID card. We don't ask you for any money,but we have some rules for you.First,don't bring any food to the museum. You can't eat in the museum. But you can bring some water to the museum. Second,you can take photos here，but you can't touch (触摸) the things. Third,keep quiet in the museum. Don't talk loudly. Fourth,don't run in the museum. Finally,our museum closes (关闭) at five thirty in the afternoon. Please leave before five and we need half an hour to do some cleaning. Have a good time here! Thank you.（）26. What does the underlined word “free” mean in Chinese?A. 有空的B. 免费的C. 自由的D. 拥挤的（）27. ________ rules are mentioned (被提及) in the passage.A. TwoB. ThreeC. FourD. Five（）28. People can ________ in the museum.A. take photosB. eat foodC. run quicklyD. talk loudly（）29. People have to leave the museum ________ in the afternoon.A. before 4：30B. before 5：00C. after 5：00D. after 5：30 （）30. Which of the following is TRUE?A. People can bring food to the museum.B. People can touch the things in the museum.C. People can bring water to the museum.D. The museum closes at 5：00 p. m.BHi，I'm Rick. I'm a middle school student. There are a lot of rules in our school. Are the rulesall terrible? I don't think so. Teachers make rules for us. I think they are good for us. We must follow them.I get up at six thirty every morning，so I have a lot of time to eat breakfast. I wear the uniform at school, so I don't need time to choose (挑选) the clothes to wear. I don't take my mobile phone to school, so I can't play games on it,and I can study hard. I keep quiet in the library, so everyone can read books well. I play sports for an hour every day，so I can keep strong (强壮的) and healthy.I help my mother do housework (家务). She is pleased. I can only play computer games on weekends. It's good for my eyes. And I can do a lot of other things (其他的事情)，like playing soccer with friends and reading some interesting books. I go to bed early in the evening，so I'm always active (积极的) in class. Rules are really helpful (有帮助的).（）31. Rick can eat breakfast every morning because he ________.A. likes eating breakfastB. gets up earlyC. doesn't go to schoolD. has many rules at home（）32. What can't Rick do at school?A. Wear his uniform.B. Use his mobile phone.C. Play soccer with his friends.D. Be active in class.（）33. When Rick is in the library，he ________.A. talks to his friendsB. plays games on his mobile phoneC. keeps quiet all the time (一直)D. is very noisy（）34. Which of the following is NOT TRUE?A. Rick plays sports every day.B. Rick doesn't play computer games on weekdays.C. Rick can do some housework at home.D. Rick studies hard and goes to bed late in the evening.（）35. What's the best title (题目) for the passage?A. What do you think of the rules？B. Rules help me have a good life.C. We don't need rules in our life.D. There are too many rules at school.第二节补全对话(共5小题，每小题1分，满分5分)。
七年级英语上册周练测试4
重点短语1. do morning exercises2. do one’s homework3. go to sleep4. do after-school activities5.have fun6. wake up7. have breakfast/lunch/dinner 8. have lessons9. get up 10. after dinner11. spend time doing sth. 12. send e-mails13. the Swimming Club 14. be nice to sb.15. two hours a day 16. chat with sb.17.have a good time 18. my best friend19. at noon 20. twice a week典型练习一、根据句意及首字母或汉语提示写单词1. It’s seven o’clock in the morning. It’s time to eat b________.2. His son often does h________ at seven o’clock in the evening.3. Now it’s nine o’clock in the evening, you must go to s________.4. Don’t w________ him up. Let him have a good rest, he is too tired.5. Sandy doesn’t go to school today b________ she is ill.6. We can get books from the school l________.7. T________ is the third day of a week.8. Millie doesn’t w________ TV. He has lots of things to do.9. We often do all kinds of ________ (活动) after class.10. We often do morning ________(早操) at 8:00 in the morning.11. What’s your f________ game?12. We are good friends .We often help e________ other.13. Do you often send e________ to your pen friends?14. We need to p________ speaking, listening, writing and reading to l earn English well.15. Don’t speak loudly in the l________. It’s a place for reading.16. Do you k______ a diary (日记) every day?17. On Sundays, I often c________ with my friends on the Internet.18.They have a (数学) lesson every day.19. My father loves r________ newspapers.20. Are they n________ to you?二、用所给单词的适当形式填空1.Please give my best ______________ (wish) to your friend for me.2. I want ________ (go) to sleep after breakfast.3. Some dogs just don’t know how ________ (have) fun.4. What about__________(购物) in the supermarket at the weekend?5. He’d like ________ (tell) you about his school.6. This is our ________ (one) English lesson.7. It’s time ________ (go) to school.8. There ________ (be) a lot of people in the park.错题新练一、单项选择1. ________ lunchtime, I often chat ________ my friends in the playgr ound.A. At; forB. For; withC. At; withD. For; at2. I love my new school. All my new classmates are ________ me.A. nice toB. kind ofC. kind forD. nice for3. I like English ________ I think it is interesting.A. soB. butC. becauseD. or4. The school day ________ at eight every morning.A. startsB. startC. to startD. starting5. I spend about two hours a day ________ my homework.A. doB. doesC. doingD. to do6. —How often do you play a ball game at school?—________.A. All dayB. One hourC. Once a dayD. Half an hour7. Sandy likes ________, but Lily likes to ________.A. swimming; play volleyballB. swim; play volleyballC. to swim; playing volleyballD. swim; playing volleyball8. ---We’re going to have a football match with Class1.----________ .A. Thank youB. Let me seeC. Wish you good luckD. Have a good time9. Who ________ a member of the Computer Club? Please raise your h and!A. want toB. wants toC. want to beD. wants to be10. It’s time for class, please wake ________ up.A. theyB. themC. theirD. theirs二、改错（每句只有一处错误，找出并改正）1. It isn’t good for you to watch too many TV. ( ) ________A B C2. Is he often take the bus to go to school? ( ) ________A B C D3. Thank you for give the card to me. ( ) ________A B C D4. Amy spends lots of money to buy her clothes. ( ) ________A B C D沁园春·雪 <毛泽东>北国风光，千里冰封，万里雪飘。
人教版七年级下册语文周考试卷4
七年级语文周考试卷（四）一、选择题。
（12分）1、下列加点的注音全部正确的一项是（）（3分）A、蓦．然（mî）讪．笑（shàn）菜畦．（qí）勉强．（qiáng）B、行．辈（háng）踱．步（duï）脑髓．（suí）亘．古（gân）C、哺．育（ bŭ）脚踝．( huá．i ) 嫉．妒(jí) 炽．痛（chì）D、可汗．（ hàn ）踌躇．（chú）污秽．（huì）云鬓（bìn）2、选出下列句子中成语使用正确的一项。
（）（3分）A. 这两本成语词典各得其所．．．．，一本重视溯源，一本例句丰富，特色却很鲜明。
B. 经过大家一番苦心孤诣．．．．的开导，他终于明白了团队精神的重要性。
C. 魅力的画面与逼真的音响效果相得益彰．．．．，使这部影片达到很高的艺术水平。
D. 由于厂家对产品的设计和生产吹毛求疵．．．．，因而产品销路越来越好。
3、下列句子没有语病的一项是( )(3分)A.在人们对大自然的随意破坏下，使得罗布泊成了名副其实的“死亡之海”。
B.在消费者维权日当天，工商管理部门立即查清了这家商场擅自提价。
C.有没有坚定的意志，是一个人在事业上能否取得成功的前提。
D.为了防止暴恐案不再发生，我国各大中城市的有关领导要求各单位加强管理，制定严密的防范措施。
4、请选出下列句子说法错误．．的一项（）（3分）A、《爸爸的花儿落了》节选自《城南旧事》，作者林海音，台湾作家。
B、《木兰诗》选自宋代郭茂倩编的《乐府诗集》。
这是南北朝时北方的一首乐府民歌。
C、小说的三要素是完整的故事情节、丰富的人物形象和精彩的环境描写。
其中，以完整的故事情节为核心。
D、《假如生活欺骗了你》选自《普希金诗集》。
普希金，俄国诗人。
著名诗作有《自由颂》《致大海》《致恰达耶夫》等。
二、背诵默写过关训练：（15分）5、⑴，思君不见下渝州。
七年级数学下学期第4周周末作业试题试题
A七年级数学第四周周末测试卷制卷人：打自企； 成别使； 而都那。
审核人：众闪壹； 春壹阑； 各厅…… 日期：2022年二月八日。
姓名______班级 _______家长签名 _________一、选择题:(每一小题3分,一共30分) 1. 如图，在所标识的角中，同位角是〔 〕A ．1∠和2∠B ．1∠和3∠C ．1∠和4∠D ．2∠和3∠2. 假设两条平行线被第三条直线所截,那么一组内错角的平分线互相 ( )3.一个三角形的周长为7cm ，一边长为3cm ，其中有两条边的长度相等，那么这个三角形的各边长是〔 〕A. 3 cm ，2 cm ，2 cmB. 3 cm ，1 cm ，3 cmC. 3 cm ，2 cm ，2 cm 和3 cm ，1 cm ，3 cm 都有可能D. 不能确定 4.在以下现象中，属于平移的是〔 〕① 在挡秋千的小朋友； ② 打气筒打气时，活塞的运动 ③ 传送带上，瓶装饮料的挪动 ④钟摆的摆动； A ．①② B.①③ C.②③ D.②④5. 如图，长方形长是10cm ，宽是8cm ，阴影局部宽为2cm ，那么空白局部面积是( )2B .40cm 2C .32cm 2D .48cm 26.假设从一个多边形的一个顶点出发,最多可以引10条对角线,那么它是( )7.假如一个角的两边分别平行于另一个角的两边，那么这两个角〔 〕A ．相等B ．互补C ．相等或者互补D ．无法确定8. 如图，BE 、CF 都是△ABC 的角平分线，且∠BDC=1100，那么∠A=〔 〕0 0 0 09.小明驾驶汽车,两次拐弯后,行使的方向与原来的方向一样,两次拐弯的角度可能是( )A ．第一次向左拐30O，第二次向右拐30OB ．第一次向右拐50O，第二次向左拐130OC ．第一次向右拐50O，第二次向右拐130OD ． 第一次向左拐50O ，第二次向左拐130Oa 照射到平面镜CD 上，然后在平面镜AB 和CD 之间来回反射，光线的反射角等于入射角．假设∠1=25°，∠3=75°，那么∠2=〔 〕 A ．40° B ．45° C ．50° D ．55°二、填空题:(每空2分,一共26分)1.△ABC 中，A ∠=45°，B ∠=50°，那么=∠C °。
Unit 4 2023-2024学年人教版英语七年级上册周周测(含解析)
Unit 4 2023-2024学年人教版英语七年级上册周周测（含解析）Unit 4——2023-2024学年人教版英语七年级上册周周测一、单项选择1.My brother and I like football. _______ play it together once a week.A.IB.TheyC.WeD.You2.—Do you like English, Emily—Yes, it’s very ________.A.boringB.relaxingC.interestingD.difficult3.I like this song. It ________ so nice.A.feelsB.soundsC.tastesD.smells4.I don't like this TV program. It's ______.A. funB. difficultC. boringD. relaxing5.My brother ________ a soccer ball but I ________.A.have; don’tB.has; notC.have; notD.has; don’t6.Let's _____ and _____ soccer on the playground.A.to go; to playB.go; playC.to go; playD.go; to play7.I think English is difficult _______ interesting.A. andB. butC. becauseD. then8.Your bag is on the chair. Let me _____ it for you, Mom.A.to findB.getC.findD.to get9.—Do you play baseball—No, but I watch baseball games ______TV.A.onB.atC.inD.for10.—Are _____ your cousins—No. I don't know _____.A. they; theyB. they; themC. them; theyD. them; them二、阅读理解AI have three good friends. We like sports very much. My favorite sport is basketball. I have three balls. I think playing basketball is interesting. Jim and Tim think it is boring to play basketball. Their favorite sport is soccer. They play soccer every afternoon. They have four balls. Mary is a nice girl. Her favorite sport is volleyball. She plays it very well. It’s relaxing for her to play volleyball. But she has only one ball. Sports are good for us.1.What's Jim and Tim's favorite sportA.Basketball.B.Soccer.C.Volleyball.D.Baseball.2.What's Mary's favorite sportA.Soccer.B.Volleyball.C.Basketball.D.Baseball.3.Who has only one ballA.I.B.Mary.C.Tim.D.Jim.4.Does Mary think it's boring to play soccerA.Yes, she does.B.No, she doesn't.C.We don't know.D.No, she don't.5.How many balls do I haveA.Two.B.Four.C.One.D.Three.BMy name is Monica Gibbons. I like swimming. Swimming is very relaxing.I swim with my parents every day. I like ball games, too. I often play volleyball and soccer with my classmates. I don't like running. It's really boring.I'm Brandon Parker. I'm 18. I love tennis and I play it well. And I'm a part-time(兼职的) tennis teacher. I have 15 students. In class I teach them to play tennis. After class, we talk about tennis. We're also good friends.I'm Jane. I'm 14. I don't like playing sports at school very much, but I like going biking with my father. It's fun. Look! This is my new bike. It's from my brother, Eric. I like it very much.1.Who does Monica swim with every dayA.Her friends.B.Her parents.C.Her classmates.2.What sport does Monica think is boringA. Running.B. Soccer.C.Volleyball.3.How many students does Brandon teachA.18.B.20.C.15.4.What sport does Jane likeA.Tennis.B. Biking.C. Swimming.5.Eric is Jane's ______.A. brotherB. fatherC. motherCHello, I'm Michael. I am 13. I have two friends. They're Gary and Jason. Gary is 13, too. But Jason is 12. We are in the same class. I like baseball. And I like Yao Ming and Zhu Fangyu. I have a basketball. I play it after school.Gary and Jason don't like it. Gary likes soccer. He has two soccer balls. He always plays soccer after school on Thursday afternoon and Sunday morning. It's easy for Gary. Jason can play soccer, too. He plays it with Gary sometimes (有时). He has a soccer ball and two volleyballs. He likes volleyball. He watches volleyball games on TV. All of us can play ping-pong. And all of us have four ping-pong balls and two ping-pong bats.What about you What ball games do you like1.Jason is Michael's ______.A. classmateB. brotherC. uncleD. father2.When does Gary play soccerA. On Wednesday and Thursday.B. On Thursday and Friday.C. On Thursday and Sunday.D. On Saturday and Sunday.3.Who likes volleyballA. Michael.B.Gary.C. Jason's father.D.Jason.4.What can we know about the three boysA. All of them like sports.B. They have four soccer balls.C. They all like playing basketball.D. They are not in the same school.5.What is the best title(最佳标题）for the textA. Two Good Friends of MineB. We Like Ball GamesC. Welcome to My SchoolD. I Like Playing Basketball三、根据汉语提示填空1.—Are those girls your ________(同班同学)—No, they aren’t.2.This question is _________(容易的) for me.3.The boy is a _______ (令人厌烦的) person.4.They ______ (仅仅) watch them on TV.5.He often ______ (看) TV on weekends.四、书面表达国家体育总局和教育部联合印发通知,要求体育要在中考中逐年加分,直到分值跟语数外相同。
七年级下 周考试题(unit6-unit8)
神池二中七年级英语周考（四）考号________ 姓名_________一．单项选择（30分）（）1. —What does your friend look like? ——.A. She has good-looking.B. He is thin.C. She is a kind girl.D. She likes music.（）2. Cathy of medium build and curly hair.A. has, hasB. is, isC. is, hasD. is, has a（）3. She likes soccer after class.A. playedB. playingC. playsD. play（）4. It was time for Old Henry __________.A. go homeB. went homeC. to go homeD. to go to home（）5. -- ? —He has big eyes and small nose.A. How old is he?B. What does he look like?C. What does he do?D. How is he?（）6. There _____still some milk in the fridge. It’s not necessary to go to the store today.A. amB. isC. areD. be （）7. ______English well, he practices speaking English every day.A. LearnB. LearningC. To learn（）8, ________, is there a restaurant in the neighborhood?A. SorryB. YesC. Excuse meD. Pardon me （）9. --- How is it ________? --- It’s not bad.A. goB. goingC. goesD. is（）10. What _______ the children ______?A. is, doingB. does, doC. are, doingD. do, do （）11. ---Excuse me, is there a bank near here?---No, ________. But you can find one in Yang Fang Road.A. there isn’tB. it isn’tC. they aren’tD. there is （）12. -- ______ is the weather? ---- It’s windy.A. WhatB. HowC. WhenD. Where（）13. There ________ an apple, two bananas and some pears on the table.A. beB. isC. areD. am（）14. Just go along this street and turn __________. The hotel is __________.A. left; leftB. left; on the leftC. on the left; leftD. left; to the left（）15. -- Hi, Lucy! Glad to see you. What are you doing here?-- I’m ______ vacation now.A. onB. inC. atD. for（）16. --- Hello! _______ Ann. Is that Lily speaking?A. I amB. This isC. That isD. She is（）17. He loves to watch the students __________ games when he goes home.A. playedB. playingC. to playD. plays （）18. --Hi. How’s it going?-- .A. I don’t like itB. I will go to schoolC. Not badD. No （）19. Andrew usually has fruit dinner.A. ofB. forC. atD. with（）20. Alice is very beautiful. She __________ her mother.A. looks afterB. looks atC. looks likeD. looks for （）21. He enjoys ___________ very much.A. play the footballB. playing footballC. playing the footballD. to play football（）22. I played soccer _____ my friends ______ Sunday afternoon.A. with, inB. with, onC. and, onD. and, at （）23. Oh, it’s really a ______ day. I can’t find all my money.A. interestingB. terribleC. prettyD. good（）24. It’s today. I think it’s going to.A. cloud; rainB. cloudy; rainingC. cloudy; rainD. cloudy; rainy（）25. --Do you like cold rainy weather?-- . I like hot, humid weather, too.A. No, I don’tB. Yes, I likeC. Yes, I do.D. No, I like it（）26. My father is a little fat. He loves _________ jokes.A. to tellB. tellC. to speakD. to say（）27. She’s a singer. She is good at_________.A. singingB. to singC. singsD. sang（）28. The young man _________ glasses is my teacher.A. wearB. wearsC. put onD. with（）29. Mrs. Green has _______ hair.A. long straight blackB. long black straightC. black long straightD. straight long black（）30. He is new. Many people _________ him.A. doesn’t knowB. knowC. don’t knowD. knows二、完型填空(10分)Johnny is twelve 31 old. He is very tall and he loves 32 basketball. His parents 33 from Anhui. Sally is small and she 34 glasses. She 35 long and curly hair. She likes 36 . She 37 hard. Dave 38 medium height. He enjoys 39 computer games. He also loves to tell 40 . ( )31. A. year B. years` C. / D. years ( )32. A. play B. plays C. playing D. played ( )33. A. is B. are C. comes D. be ( )34. A. not wear B. do wear C. doesn’t wear D. don’ t wear ( )35. A. has B. have C. is D. are ( )36. A. sing B. doesn’t sing C. sings D. singing ( )37. A. works B. working C. to work D. don’ t work ( )38. A. are B. be C. is D. am ( )39. A. plays B. playing C. to play D. play ( )40. A. jokes B. joke C. to joke D. not joke三、阅读理解（30分）AI am Tony. My best friends are Frank and Cindy .We often do many things together. Frank lives next to my home and we are in the same class .He is thirteen years old and tall and medium build .He has curly hair and blue eyes .He is good-looking and clever .He is good at math and often helps me with my homework .He likes wearing black pants and yellow T-shirts . Cindy doesn’t go to my school .She is eleven years old .She is thin and of medium height. She has curly blonde hair and her eyes are brown .She is good-looking ,too, but a little shy .She is good at playing the guitar .Her favorite subject at school is music .She often teaches Frank and me to play the guitar after class .The three of us have great fun together, and we help each other and sometimes play video games at my house.( ) 41. What things do the three children do together? They .A. play baseballB. play video gamesC. play the guitarD. both B&C ( ) 42. eyes are blue.A. Frank’sB. Cindy’sC. MyD. Tony’s( ) 43. good at math.A. Cindy isB. Tony isC. Frank isD. I am( ) 44. is good-looking, but a little bit shy.A. FrankB. CindyC. TonyD. My friend( ) 45. Where do they play video games?A. at schoolB. at Frank’s houseC. at Cindy’s houseD. at Tony’s houseBI have a happy family. My father is from Shanghai, China. He is of medium build. His face is long. He has short straight hair. He often wears a pair of glasses. He likes wearing a white T-shirt and trousers in summer. He likes reading and playing chess. My mother is from New York, America. She is tall with a round face. Her nose is big and her long curly hair is blonde. She often wears a blue dress. My mother can speak both Chinese and English. She likes watching TV and telling jokes. My name is Wang Kang. I'm not tall, but my short curly hair makes me look great. I'm very heavy. I need to do more exercise. I have a younger sister. She's only four years old. She has long curly hair. She is good-looking. She often wears a red skirt. She likes talking. She never stops talking.根据短文内容，选择最佳答案。
七年级上册语文周考4
A.荒淫怠慢就不能振奋精神，冒险烦躁就不能治理本性。
B.放纵懈怠就不能励精图治，轻薄浮躁就不能修养性情。
C.荒淫怠慢就不能励精图治，冒险烦躁就不能治理本性。
D.放纵懈怠就不能振奋精神，轻薄浮躁就不能修养性情。
8.下面对这篇文章的分析不正确的一项是( D )
A.“非淡泊无以明志，非宁静无以致远”说明了“淡泊”“宁静”是实现人生理想的基本要求，强调它们是与人的志向相关的。
C.一人欲依附想D.王欲舍所携人舍弃
2.用现代汉语翻译下面句子（6分）
（1）谏曰：“阿兄，老翁可念，何可作此！”（3分）
译文：（谢安）劝谏说：“兄长，老人家值得同情，怎么可以这样做呢？”（补充主语，谏、可、念、何、可各0.5分）
（2）既已纳其自托，宁可以急相弃邪？（3分）
译文：既然已经接受了他的托付，怎么可以因为情况紧急就抛弃他呢？（既、纳、托、宁、以、弃各0.5分）
D在张艺谋最新上映的电影《影》中，感受到书法与古琴的生动气韵。
【解析】B.搭配不当，“桂香”不能让人“眼花缭乱”；C.语义重复，“达到”和“以上”重复;D.成分残缺，缺主语。
夫君子之行，静以修身，俭以养德。非淡泊无以明志，非宁静无以致远。夫学须静也，才须学也，非学无以广才，非志无以成学。淫慢则不能励精，险躁则不能治性。年与时驰，意与日去，遂成枯落，多不接世，悲守穷庐，将复何及！
D.人们挖了水渠，农场边、枫树林里，流淌着滔滔不绝的泉水。
【解析】B“滔滔不绝”指说话很多，说起来没完。
4.下列语句中没有语病的一项是（A）
A卓不群同学认为，我们能否成为真正的育才学子，关键在于能否养成“育才十大好习惯”。
B绿树掩映、墨池微澜和桂香四溢，都让初入育才校园的卓不群同学眼花缭乱。
人教版七年级第4周周考
洪塘中学2018-2019七年级上学期数学第一次阶段考试卷范围( 1.1 - 1.3 )班级: 姓名： 学号：一 、选择题(4*10)(将答案填写在答题卷相应位置) 1. 下列四个数是负数的是 ( )A ．-1B ．0C ．1D ．22. 如果a 与1互为相反数，则|a+2|等于（ ） A ． 2 B ． -2 C ． 1 D ． -13. 计算1-(-2)的正确结果是( )A ．-2B ．-1C ．1D ．34 如果物体下降5 米记作5-米，则6+米表示（ ）A 、下降6米，B 、上升6米，C 、下降或上升6米，D 、上升6-米。
5. 如果a b =,那么a 与b 的关系为 ( )A ．相等B ．互为相反数C ．都是0D ．相等或互为相反数6. 下列表示数a 、b 的点在数轴上的位置如图所示，若a ＞b ＞0，则其中正确的是（ ）A ．B ．C ．D ．7. 已知a 、b 、c 在数轴上的位置如图所示，化简：的结果是（ ）A ．B ．C ．D ．8. 在数轴上,到表示3的点的距离为5个单位长度的点表示的正数是( )A. -2B. 8C. -2或8D. 5 9下列说法正确的是( )A.-3是相反数B.2是-的相反数C.-与互为相反数D.-a 与a 互为相反数 10. 如果|-a|=-a,则a 的取值范围是( )A.a>0B.a≥0C.a≤0D.a<0洪塘中学2018-2019七年级上学期数学第一次阶段考答题卷范围( 1.1 - 1.3 )班级: 姓名： 学号：一 、选择题(4*10)二 、填空题11. (3分) 7的相反数是 ，-5的倒数是 ，﹣的绝对值为 ． 12. (3分) 化简 -(+0.7)= ． -(-5)= 6--=13. (3分) 设a 是最小的正整数，b 是最大的负整数，c 是绝对值最小的有理数，则c b a ,, 三个数的和为 。
14.(4分) 有理数：227，0.3，0，－1.7，21，－2， 中 正数集合{ …} (2) 整数集合{ …}15. 有理数a ，b ，c 在数轴上的位置如图所示，且表示数a 的点、数b 的点到原点的距离相等．(1)(4分)用“>”“ =”“ <”填空：b 0，a+b 0，a-c 0，b-c 0； (2)(4分)化简 a b c a b ++-- =16.(3分) 若2=a ，5=b ，且0<+b a ，则a-b 的值为 三 、计算题(4*4)(要写过程)17． 22+（﹣4）+（﹣2）+4； 18. (－3)＋40＋(－32)＋(－8) ；19、 20. 比较有理数的大小：67-78 -和四、解答题21(10分）把下列各数在数轴上表示出来，并按从小到大用“<”号连接起来。
七年级英语上学期第4周周考试题目标 试题
2021年秋第四周周考英语试题〔适用年级：七年级测试时间是：40 分钟满分是：100 分〕老师寄语同学们，一定要用你最好的态度，最正确的书写来完成这份试卷哦！书写不漂亮，卷面不整洁，可是要扣分的哈!班级姓名总分听力局部(20分)Ⅰ.听句子，选择与其意思相符的图片(有两幅图是多余的)。
(5分)A. B. C.D. E. F.G.1. __________2. ____________3. __________4. __________5. ___________Ⅱ.听句子，选择正确的答语。
(5分)( )6. A. His name’s Alan. B. Her name’s Kate. C. Her friend’s name is Alice.( )7. A. Yes, he is. B. Yes, she is. C. No, they aren’t. ( )8. A. It’s my picture. B. That’s a picture. C. It’s a telephone.( )9. A. He is Tom. B. She is Jane. C. They’re my friends. ( )10. A. Good morning. B. How are you? C. Nice to meet you.Ⅲ.听对话，选择正确之答案。
(5分)听第一段对话，答复第11—12小题。
( )11. This is a ________.A. schoolB. pictureC. cup( )12. The ________ are in it.A. girl’s parentsB. boy’s parentsC. boy’s grandparents听第二段对话，答复第13—15小题。
( )13. It is in the ________.A. morningB. afternoonC. evening( )14. Who is Cindy?A. Sally’s cousin.B. Sally’s sister.C. Tom’s cousin.( )15. What’s Cindy’s telephone number?A. 459-7836.B. 495-8736.C. 459-8736.Ⅳ.听短文，选择正确之答案。
七年级英语上学期第4周周练试题试题_1
灌云县四队中学2021－2021上学期第4周七年级英语试卷制卷人：歐陽文化、歐陽理複；制卷時間：二O二二年二月七日〔时间是：45 分钟总分：100 分〕一、单项选择〔一共15小题；每一小题1分满分是15分( ) 1.I have ____ e-dog. ____ name is Hobo.A. a; ItsB. an; ItsC. a; It’sD. an; It’s( ) 2. --- I love reading, what about you? --- __________.A. Thank youB. me too.C. Yes, I doD. Why not?( ) 3. _______ our free time, we always play __________ on the playground. A. In, the tennis B. At, tennis C. On, a tennis D. In, tennis( ) 4. Ella __________ her homework at school because he wants to read books.A. doesn’tB. don’t doC. doesn’t doD. doesn’t does ( ) 5. you good at ?A. Do, danceB. Do, dancingC. Are, danceD. Are, dancing ( ) 6. Can you my little dog , please ?A. look atB. look forC. look afterD. look like ( ) 7. I really love sports. Can you tell me how _________ like a good swimmer?A. swimsB. to swimmingC. to swimD. swimming( )8. —_____ Mary happy today? —I don’t think so. She ________ look happy this morning.A. Is, isn’tB. Is, doesn’tC. Does, doesn’tD. Does, isn’t( )9.——_______ does he look? ——He looks strong.A. WhatB. WhereC. HowD. Why( )10.——Where ______ your grandparents _______? ——They are from Australia.A. are, come fromB. do, fromC. do, come fromD. do, are from ( )11.--- -Hi, Millie. This is my sister, Sandy. ---_________.A. Hi, Sandy. Nice to meet you.B. Are you Sandy?C. All right, SandyD. Sandy? I don’t know you .( )12. --- How do you get to the farm? --- ________. It’s far away from our city.A. By a trainB. By trainC. On footD. On a car ( )13. The boy _______ my father ______my mother is me.A. beside, andB. from, toC. between, andD. on the right of, behind( )14. He _____ football with his friends after school, it makes him ________happy.A. talks about, feelsB. talks about, feelC. talk with, to feelD. talks with, feel( ) 15. He wants to play ________ Huanghe Football Team _______ the next World Cup.A. for, forB. in, inC. for, inD. in, for二、完形填空〔一共10小题；每一小题1.5分，满分是15分〕I’m Li Kui. I’m very glad to meet you. First let me say something about my family.There are five 16 in my family. They are my mother, my father, my sister, my brother 17 I.My father is an 18 worker. My mother is a teacher of English. My sister is eighteen and my brother is sixteen. I’m fourteen. We are in the same 19 . We all 20 hard.My home is at North Hill. There’s a big river near our 21 . And behind it there is a hill. There is one big tree and some small trees around it. 22 apple trees. 23 a photo of my house. In the photo. you can 24 two cats in my bedroom. One is white, and the other is black. We like 25 very much.( )16. A. men B. women C. people D. children( )17. A. or B. and C. but D. /( )18. A .good B. small C. young D. old( )19. A. family B. school C. house D. farm( )20. A. play B. think C. study D. live ( )21. A. bedroom B. house C. room D. school( )22. A. There’re B. It’s C. They’re D. Here’re( )23. A. He’s B. Here’s C. She’s D. There’re( )24. A. look B. see C. watch D. have( )25. A. him B. one C. them D. it三、阅读理解〔一共10小题；每一小题2分，满分是20分〕AMy name is Zhang Hua. I am from Nanjing, China. I am twelve. I am in Grade 7.I have short hair and big eyes. I am tall and slim. I play too many computer games, so I wear glasses. I like listening to music very much.My name is Mary. I am thirteen years old. I was born in America but I live in Tianjin now. I am in Grade 8. I am short and strong. I like sports very much. I like football. I play it for half an hour after school every day. I want to be a football player.( )26. What grade is Zhang Hua in?A. In Grade 6.B. In Grade 7.C. In Grade 8.D. In Grade 9.( )27. What does Zhang Hua like doing?A. Playing football.B. Playing volleyball.C. Listening to music.D. Reading.( )28. How old is Mary?A. 11.B. 12.C. 13.D. 14.( )29. How long does Mary play football every day?A. For half an hour.B. For an hour.C. For two hours.D. For three hours. ( )30. Where is Mary from?A. China.B. America.C. England.D. Japan.BI am John. I always get up late at the weekend. At about 9:30 am, I have breakfast. After breakfast, I start doing my homework. We have lunch at about 12:00, and then I watch TV or have a rest(休息). I like reading and I often read some interesting books in the afternoon. I like sports, too. Sometimes I play football or basketball with my friends at school. My school is near my home, so I can walk there. Every weekend, my father takes me to a restaurant for a big dinner. I can enjoy lots of nice food. I like my weekend.( )31. What time does John have breakfast at the weekend?A. At about 8:30 am.B. At about 9:30 am.C. At about 10:30 am.D. At about 11:30 am.( )32. What does John often do in the afternoon at the weekend?A. He often reads some books.B. He often has a rest.C. He often watches TV.D. He often plays basketball. ( )33. Which is NOT true(正确的)？A. John likes reading.B. John likes playing basketball.C. John likes playing football.D. John likes cooking.( )34. Where does John enjoy lots of nice food at the weekend?A. At home.B. At school.C. In a restaurant.D. At his friend’s home. ( )35. Who take(s) John for a big dinner at the weekend?A. His brother.B. His father.C. His grandparents.D. His friends.四、词形变换，写出单词的适当形式 (12分)1.Our class has 35 ___________(同学).2.Sandy is tall and ___________(苗条的).3.Our __________(教室) is very big.4. Simon and Kitty all wear ___________(眼镜)5. Do you want to play ______________ (排球) with us after school?6. ______________ (人人，每人) in our class likes English.7.Now ,we are in (年级) Seven.8.Yao Ming and Zhang Ziyi are my ___________(偶像).9. I really like sports. I want to join a Sports _______〔俱乐部〕.10. Frank is not tall but he plays basketball very _________ (good).11. Millie often __________ (fly) a kite with her brother.12. The girl __________ (not be) from the USA.五、选词填空〔8分〕1. Amy’s ________ are singing and dancing.2. Simon does _________ in playing volleyball.3. Sandy and Lucy __________ in the Swimming Club.4. My sister _______ watching TV very much.5. Mary often ________ badminton with her mother at the weekend.6.Listening to music .7.Wang Bing likes .Jay zhou is his favourite singer.8.How many are there in your reading club?六、根据汉语意思提示完成句子.(10分)1. 他希望能通过电视看足球比赛，我希望他的梦想成真。
七年级英语上册 周考四 试题
内蒙古乌中旗二中七年级英语上册周考四〔无答案〕仁爱版一单项选择 (10×2=20分)( ) 1.My English is not very good.Could you help me____it?A inB ofC withD at( ) 2. My classmate Liu Hao _____like red at all.A don’tB isn’tC notD doesn’t( ) 3. —Who’s the girl in red?—Sorry, I don’t know ____. I think ____ is new.A. she; sheB. her; sheC. her; herD. she; her( )4.Is the cute boy your______?---Yes, he is my uncle’s son.A cousinB sisterC auntD brother( )5.I have a big family.My family all_____Xi’an.A work atB works atC works inD work in( )6.His aunt lives _____Shanghai.She lives _____my grandparents.A with; inB with;with Cin;with D in;in( )7. His English is very ____ and he speaks English very ____.A. good; goodB. well; wellC. well; goodD. good; well( )8.Miss Wang, a nice teacher, ____ me English.I like her very much.A teachesB teachC to teachD teaching( )9. Ann has a cute cat. _____ color is brown.A. ItsB. It’sC. HisD. Her( )10 —Who is the girl ____?—She’s my sister.A. in a yellowB. in the yellowC. in yellowD. on yellow 二根据句意或者首字母填空。
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周4）
一、选择题（每小题4分，共40分）
1. 将－（x －y ）+(m －n)去括号，正确的结果是（ ）
A. x －y+m －n
B. －x －y+m －n
C. －x+y －m+n
D. －x+y+m －n
2. 下列代数式中，不是同类项的是（ ） A.22
313yx y x -和 B. 1和－2 C. 20与 D. a b b a 224
343与 3. 在4-，3.14 ，π，10，∙∙15.1 ，72中无理数的个数是（ ） A. 2个 B.3个 C.4个 D.5个
4. 用100元钱可购买m 本书，且每本书需另加邮寄费6角，则购买m 本书共需费用（ ）
A.（100+0.6）m
B.100.6+m
C. 100m+0.6
D. 100+0.6m
5. 下列运算正确的是( )
A. －5a+4a=－1
B. 2a －2a+b=b
C. 4x-3＝x
D. 8a －2b=6ab
6. 单项式b a 24
5-的次数是（ ） A. 1 B. 2 C. 3 D. 4
7. 下列说法正确的是（ ）
A. －a 是负数
B.a 一定是非负数
C. 不论a 为什么数，11=∙a a
D. 7
a 一定是分数 8. 已知a 是两位数，
b 是一位数，把a 接写b 的后面，就成为一个三位数，这个三位数可表示成（ ）
A. 10b+a
B. ba
C. 100b+a
D. b+10a
9.如图，以数轴的单位长度线段为边作一个 正方形，以表示数1的点为圆心，正方形对角线长为半径画弧，交数轴于点A ，则点A 表示的数是（ ）
A.－2
B. 21-
C.－1＋2
D. 21--
10.有下列说法：
①任何无理数都是无限小数； ②有理数与数轴上的点一一对应；
③在1和3之间的无理数有且只有2，3，5，7这4个； ④2
π是分数，它是有理数；⑤近似数7.30所表示的准确数a 的范围是：7.295≤a ＜7.305. 其中正确的个数是( )
A. 1
B. 2
C. 3
D. 4
二、填空题(每小题4分，共24分) 11. 3
2的相反数是 ，8的立方根是 ，－16的绝对值是_______. 12. 单项式2a π-的系数是 ；多项式2232ab ab a +-的次数是 次．
13. 若2
1-3b a m 与n b a 23-是同类项，则m= , n= . 14. 整式2334+--x x 与的差是_______________．
15. 若264y x m +与3n x y 的和仍是单项式，则n m = ．
16.如图，在长为a ，宽为b 的草坪中间修建宽度为c 的两条道路，那么剩下的草坪面积是_____________．
17. 化简（20分）
（1）x y y x 3254-+- （2）23254533a a a a a ++---
（3）87)32(3++--x x (4) )34(21)21(32222y x y x ---
18. （8分）先化简，再求出代数式的值： 2
1),27()75(2-
=+--+-+a a a a 其中
19. （8分）有这样一道题：“当a= 0.35，b=－0.28时，求多项式)2(373233a b a b a a --- +)310()36(323---a b a b a 的值”；小明指出，题中给出的条件a=0.35，b=－0.28是多余的，他的说法有道理吗？为什么？
(上节课思考题，做对了有加分哦)
20.小明和小亮玩猜数游戏，小明说：“你随便选定三个一位数，按这样的步骤计算：⑴把第一个数乘以2；⑵加上5；⑶乘以5；⑷加上第二个数；⑸乘以10；⑹加上第三个数，只要你告诉我最后得数，我就知道你所选的三个一位数，”小亮不相信，但试了几次，小明都猜对了，你知道小明试怎样猜对的吗?。