一．单选题（每题只有一个选项正确，本大题5小题，每小题6分，共30分） 1.“神舟十一号”飞船于2016年10月19日凌晨与“天宫二号”实现对接，景海鹏观察到“天宫二号”处于静止状态，则他所选的参考系可能是（） A．远洋观测船 B．地面指挥中心 C．“神舟十一号”飞船 D．在“天宫二号”内行走的陈冬 【答案】C 考点: 参考系。 【名师点睛】对参考系的理解 （1）物体的运动是绝对的，静止是相对的，选定参考系之后，才能知道和研究物体的运动．（2）参考系的选取是任意的．在实际问题中，参考系的选取以研究问题方便、简单为基本原则．通常选地面或地面上静止不动的物体为参考系． （3）对于同一个物体，选取不一样的参考系，观察的结果也会不同． 2．下列几组物理量中，都为矢量的一组是（） A．时间、位移、速度 B．速度、速度变化量、加速度、力 C．路程、时间、速率 D．速度、速率、加速度、力 【答案】B 【解析】 试题分析：是标量的物理量为：时间、路程、速率；
矢量为：位移、速度、是的变化量、加速度、力。由上述分析知B对。 考点:矢量与标量。 【名师点睛】矢量和标量 （1）标量：只有大小而没有方向的物理量叫做标量．如温度、质量、路程等． （2）矢量：既有大小又有方向的物理量叫做矢量，如位移、力、速度等． 3. 如图甲、乙、丙所示，弹簧秤、绳和滑轮的重力均不计，摩擦力不计，物体的重力都是G．在甲、乙、丙三种情况下，弹簧秤的示数分别是F1、F2、F3，则（） A．F3＝F1>F2 B．F3>F1＝F2 C．F1＝F2＝F3 D．F1>F2＝F3 【答案】A 考点: 受力分析、共点力的平衡条件及应用。 【名师点睛】共点力平衡的推论 (1)若物体在两个力作用下处于平衡状态，则这两个力一定等大、反向，是一对平衡力． (2)若物体在三个共点力作用下处于平衡状态，则任意两个力的合力与第三个力等大、反向． (3)若物体在n个共点力作用下处于平衡状态，则其中任意(n－1)个力的合力必定与第n个力等大、反向． 4．如下图是物体做直线运动的x—t图象，下列说法正确的是（）
吉林省长春市实验中学高二英语周周练（7）新人教版 I.单项填空 1? _______ , I think, and you will settle the problem. A. So long as you keep up your spirits B ? If you make your effort C ? Making great efforts D ? A bit more effort 2? The football player had __________ gift for football when he was a child ? Now he is _____________ second to none in the football field ? A. the; the B ? the; a C ? a; the D ? a; / 3? To our disappointment, the trip we had been looking forward to ________ in the pouring rain ? A ? starting B ? start C ? to start D ? started 4?一 _________ you called yesterday evening? —My sister .Why? A ? Who it is that B ? Who is it that C ? Who was it that D ? Who it was that 5? 一Why didn ，t you come to the cinema with us last Saturday? 一Oh, sorry .But I ________ the film ? A. see B ? saw C ? have seen D ? had seen 6? Li Na returned to Wuhan after the Games? _____________ , as is known to us, she had been brought up and trained to be a gold medalist of tennis ? A ? when B ? that C ? there D ? where 7? Do you think that bridge __________ 2,000 meters long? It doesn* t appear _________ long ? A. measures; that B ? is measured; so C ? is measured; such D ? measures; much 8? Look at the sweat on her face.She ___________ the house since she got up this morning ? A. is cleaning B ? has been cleaned C ? was cleaning D ? has been cleaning 9? The research mainly deals with the difficulty the students have _______________ their attention on their study all the time ? A. to focus B ? to be focused C ? focusing D ? focused 10? It's wise of you to _________ your father* s advice when you come to any difficulty ? A. ask B ? seek C ? try D ? attempt 11 ? Their mother ________ dinner at the kitchen when a quarrel _____________ among the children ? A ? was preparing ： was broken out B ? prepared ： was broken out C ? was preparing ： broke out D ? prepared ： broke out 12? It has been announced recently that all the schools ______________ not have the students attend school if the students have high temperatures. A. need B ? shall 13. —Mom, may I play — ________ ! Dad A. Help yourself 14. He lost both of his parents in the big earthquake, but kind couple adopted him and took good care of him. C ? could D ? ought to computer games just for a while? is writing his paper ? B ? It's up to you C ? Behave yourself D ? Go ahead for him,
完形阅读周周练 Test 1 Push! At midnight Peter was awakened by heavy knocks on the rolled over and looked at his __1__，and it was half past one.“I’m not getting __2__ at this time，”he __3__，and rolled over. Then，a __4__ knock followed.“Aren’t you going to __5__ that”said his wife. So he dragged himself out of bed and went opened the door and there was a man __6__ at the didn’t take Peter long to__7__the man was drunk. “Hi，there，”slurred(嘟囔) the stranger.“Can you give me a push” ` “No，get ’s half past was __8__.”Peter said and slammed the door. He went back __9__to bed and told his wife what had happened. She said，“That wasn’t very __10__of that night we had a__11__ in the pouring rain on the way home and you had to __12__that man’s house to get our car __13__again What would have happened if he’d told __14__to get lost” “But the guy was __15__，”said Peter. “It doesn’t matter，”said the wife.“He needs help__16__ it would be the Christian thing to help him.” So Peter went out of bed again, got dressed, and went opened the door，and not being able to see the stranger anywhere he shouted，“Hey，do you still want a __17__” And he heard a __18__cry out“Yeah，please.” So，still being unable to see the stranger he shouted，“__19__are you” The drunk replied，“Here，on the__20__.” 、 1．B．clock C．wife D．window 2． of bed B．out of the house C．down to work D．into trouble 3．B．explained C．replied D．thought 4．B．louder C．longer D．angrier @ 5．B．stop C．answer D．refuse 6．B．lying C．knocking D．looking 7．B．show C．realize D．doubt 8． bed B．in surprise C．at home D．at work ) 9．B．up C．inside D．home 10．B．foolish C．typical D．generous 11． time B．quarrel C．fight D．breakdown 12． to B．pass by
2019-2020学年广东省汕头市金山中学高三（上）期末历史试卷 一、选择题。每题4分． 1. 在对先秦时期古城遗址的发掘中，发现当时已有专门的排水系统。如二里头木结构 排水暗沟、偃师商城石砌排水暗沟、安阳殷墟陶土排水管道、周原卵石排水暗沟等。 这说明（） A.先秦时期各地存在密切联系 B.各时期的技术存在传承关系 C.城市建设以农业发展为基础 D.先民重视对环境的改造利用 【答案】 D 【考点】 从部落到国家 夏商的政治制度 【解析】 本题考查中国古代先民对环境的改造和利用。 【解答】 从先秦时期的古城遗址中已有“专门的排水系统”可以得出，中国的先民重视对环境的 改造利用，故D正确。 A、B、C在材料中没有体现，均不符合，故排除。 故选D。 2. 钱穆指出，封建时代贵族管家称宰，秦汉统一后，家宰就变成了国家政治领袖，管 国家政务。汉代皇室事务，照例都归御史中丞管，御史中丞隶属于御史大夫，御史大 夫隶属于宰相。这可以说明汉代（） A.宰相由贵族私官演化而来 B.皇室事务以监察为主体 C.家宰职权扩大并威胁皇权 D.国家治理体制尚不完善 【答案】 D 【考点】 皇帝制度和三公九卿制 【解析】 本题主要考查皇帝制度和三公九卿制。 【解答】 A.结合所学知识可知，秦设立丞相，帮助皇帝处理政务，由此可知，不是有贵族私官 演化而来。 B.依据题干所给材料可知，皇室事务即是为皇家服务的相关事务，不是以监察为主的。 C.题干所给材料没有涉及威胁皇权的信息。 D.依据题干所给材料中“汉代皇室事务，照例都归御史中丞管，御史中丞隶属于御史大夫，御史大夫隶属于宰相”可以得岀，汉代官职中依然有专门管理皇家事务的官员，这 说明国家治理尚未完全摆脱为皇家服务的特点，由此可知当时的国家治理制度还不够 完善。 故选D。 3. 宋代科举考试的录取名额比前朝扩大了很多、唐代每次进土及第的人数不过二三十
2018-2019年最新汕头金山中学自主招生考试 数学模拟精品试卷 （第一套） 考试时间：90分钟 总分：150分 一、选择题（本题有12小题，每小题3分，共36分） 下面每小题给出的四个选项中，只有一个是正确的，请你把正确选项前的字母填涂在答题卷中相应的格子内．注意可以用多种不同的方法来选取正确答案． 1．下列事件中，必然事件是( ) A ．掷一枚硬币，正面朝上 B ．a 是实数，|a |≥0 C ．某运动员跳高的最好成绩是20.1米 D ．从车间刚生产的产品中任意抽取一个，是次品 2、如图是奥迪汽车的标志，则标志图中所包含的图形变换没有的是（ ） A ．平移变换 B ．轴对称变换 C ．旋转变换 D ．相似变换 3．如果□×3ab ＝3a 2b ，则□内应填的代数式( ) A ．ab B ．3ab C ．a D ．3a 4．一元二次方程x (x －2)＝0根的情况是( ) A ．有两个不相等的实数根 B ．有两个相等的实数根 C ．只有一个实数根 D ．没有实数根 5、割圆术是我国古代数学家刘徽创造的一种求周长和 面积的方法：随着圆内接正多边形边数的增加，它的周
长和面积越来越接近圆周长和圆面积，“割之弥细，所失弥少，割之又割，以至于不可割，则与圆周合体而无所失矣”。试用这个方法解决问题：如图，⊙的内接多边形周长为3 ，⊙O 的外切多边形周长为3.4，则下列各数中与此圆的周长最接近的是（ ） A ．10 D 6、今年5月，我校举行“庆五四”歌咏比赛，有17位同学参加选拔赛，所得分数互不相同，按成绩取前8名进入决赛，若知道某同学分数，要判断他能否进入决赛，只需知道17位同学分数的（ ） A.中位数 B.众数 C.平均数 D.方差 7．如图，数轴上表示的是某不等式组的解集，则这个不等式组可能是( ) A.????? x ＋1>0，x －3>0 B. ??? ?? x ＋1>0，3－x >0 C.????? x ＋1<0，x －3>0 D.??? ?? x ＋1<0，3－x >0 8．已知二次函数的图象(0≤x ≤3)如图所示，关于该函数在所给自变量取值范围内，下列说法正确的是( ) A ．有最小值0，有最大值3 B ．有最小值－1，有最大值0 C ．有最小值－1，有最大值3 D ．有最小值－1，无最大值 9．如图，矩形OABC 的边OA 长为2 ，边AB 长为1，OA 在数轴上，以原点O 为圆心，对角线OB 的长为半径画弧，交正半轴于一点，则这个点表示的实数是( )
高二英语周练Dec.18 命制人：单晓玲审核人：审核组 一、完型填空 In a village near Nuremberg lived a family with eighteen children. Merely to keep food on the table, the goldsmith father worked eighteen hours a day. Despite their 1 condition, two of Durer's children had a dream to seek their talent for 2 , but they knew well their father would never be able to send 3 of them to Nuremberg to study at the Academy. The two boys finally worked out an agreement. They would toss（扔）a coin. The 4 would work in the nearby mines to support his brother. Albrecht Durer __5 the toss and went off to Nuremberg. Albert went into the dangerous mines and, for the next four years, financed his brother, 6 work at the academy was almost an 7 success. Albrecht's woodcuts and oils were 8 better than those of his professors and he soon was earning considerable fees 9 his works. When the young 10 returned home, the Durer family held a festive dinner. Albrecht rose to toast to his beloved brother, "Now, Albert, it is your 11 to seek your dream. I will support you." All heads turned to the far end of the table, 12 Albert sat, tears streaming down his pale face, while he sobbed and repeated, "No ...no." Finally, Albert rose and 13 the tears from his cheeks.He said softly, "I cannot go to Nuremberg, brother. It is too late for me. Look 14 four years in the mines have done to my hands! The bones in every finger have been smashed at least once, and I cannot even hold a glass to 15 your toast." Today, Albrecht Durer's masterful works 16 in every great museum in the world, but chances are great 17 you, like most people, are familiar with only one of them. Albrecht Durer drew his brother's abused hands with palms together and thin fingers stretched skyward. He 18 it "The Praying Hands." Next time you see that touching creation, take 19 second look. Let it be your reminder, if you still need one, that no one ever makes it 20 ! 1. A. hopeful B. lucky C. disappointed D. hopeless 2. A. music B. farming C. mining D. art 3. A. all B. neither C. each D. either 4. A. painter B. loser C. winner D. failure 5. A. lost B. got C. won D. beat 6. A. who B. his C. whom D. whose 7. A. obvious B. immediate C. attractive D. ordinary 8. A. far B. quite C. very D. a lot of 9. A. for B. after C. out D. at 10. A. miner B. worker C. artist D. professor 11. A. luck B. turn C. move D. moment 12. A. where B. which C. there D. when 13. A. recovered B. wept C. wiped D. handed 14. A. what B. that C. where D. how 15. A. hold B. return C. move D. turn 16. A. hang B. represent C. present D. visit 17. A. when B. that C. which D. as 18. A. said B. loved C. told D. called 19. A. its B. the C. a D. 不填 20. A. yet B. out C. alone D. before 二、阅读理解(共15小题；每小题2分，满分30分)
汕头市金山中学2021届高三第一学期期中考试 英语 （满分135分。考试时间120分钟。） 注意事项：选择题每小题选出答案后，用2B铅笔把答题卡上对应题目选项的答案信息点涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上。非选择题必须用黑色字迹钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上；如需改动，先划掉原来的答案，然后再写上新的答案，不准使用铅笔和涂改液。不按以上要求作答的答案无效。 第一部分阅读理（共两节，满分50分） 第一节（共15小题；每小题2.5分，满分37.5分） 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。 A
1．What is the advantage of Fineways’ new food labels? A．They provide extra nutritional information. B．They warn customers about unhealthy foods. C．They show different customers’ nutritional needs. D．They remind customers of the harm of unbalanced nutrition. 2．According to the passage, the new labelling system can help to . A．reduce the amount of food you take B．follow GDAs by mixing various foods C．make your choice of more delicious food D．satisfy the growing demands for nutrition 3．Where is the passage most probably taken from? A．A dinner menu. B．A research report. C．A fashion magazine. D．An advice brochure. B Doctors are known to be terrible pilots. They don’t listen because they already know it all. I was lucky: I became a pilot in 1970, almost ten years before I graduated from medical school. I didn’t realize then，but becoming a pilot makes me a better surgeon. I loved flying. As I flew bigger, faster planes, and in worse weather, I learned about crew resource management(机组资源管理), or CRM, a new idea to make flying safer. It means that crew members should listen and speak up for a good result, regardless of positions. I first read about CRM in 1980. Not long after that, an attending doctor and I were flying in bad weather. The controller had us turn too late to get our landing ready. The attending doctor was flying; I was safety pilot. He was so busy because of the bad turn, he had forgotten to put the landing gear（起落架）down. He was a better pilot－and my boss－so it felt unusual to speak up. But I had to: Our lives were in danger. I put aside m y uneasiness and said, “We need to put the landing gear down now!” That was my first real lesson in the power of CRM, and I’ve used it in the operating room ever since. CRM requires that the pilot/surgeon encourage others to speak up. It further requires that when opinions are from the opposite, the doctor doesn't overreact, which might prevent fellow doctors from voicing opinions again. So when I'm in the operating room, I ask for ideas and help from others. Sometimes they’re not willing to speak up. But I hope that if I continue to encourage them, someday someone will keep me from “landing gear up”. 4．What does the author say about doctors in general? A．They like flying by themselves. B．They are unwilling to take advice. C．They pretend to be good pilots. D．They are quick learners of CRM. 5．The author deepened his understanding of the power of CRM when . A．he saved the plane by speaking up B．he was in charge of a flying task C．his boss landed the plane too late D．his boss operated on a patient 6．In the last paragraph “landin g gear up” probably means . A．following flying requirements B．overreacting to different opinions C．listening to what fellow doctors say D．making a mistake that may cost lives 7．Which of the following can be the best title for the text? A．CRM:A New Way to Make Flying Safe B．Flying Makes Me a Better Doctor C．The Making of a Good Pilot D．A Pilot-Turned Doctor
广东省汕头市金中南校第一学期七年级期中考试 姓名:_____________ 年级:____________ 学号:______________ 一、文言文阅读（共2题） 1. 庄子①欲刺虎，馆竖子止②之，曰：“____________。 这则故事说明了什么道理?（提示：可从人的角度亦可从动物的角度回答） 【答案】 1．两 虎 方 且 食 牛 /食 甘 必 争 /争 则 必 斗 2．从受伤的老虎下手刺杀，一下子便会得到刺杀两虎的名声。 3．提示：鹬蚌相争，渔人得利。可从人（庄子）的角度亦可从动物（老虎）的角度回答。如：人要善于动脑，力争做事，一举两得，事半功倍；人与人之间、动物之间都要相互团结，相互依存，否则就难以长久生存。 译文：卞庄子要刺杀老虎。旅馆的童仆劝阻他，说：“两只老虎正要吃一只牛。吃得香甜时一定要争起来。一争必定要拼斗，一拼斗就会大的受伤，小的被咬死。从受伤的老虎下手刺杀，一下子便会得到刺杀双虎的名声。”卞庄子以为这话对，就站着等待它们。过了一会儿，两只老虎果然斗了起来，大的受伤，小的被咬死。卞庄子就从受伤的老虎下手刺杀，一下子果然获得杀双虎的功效。 难度：中等 知识点：人物传记类 2. 阅读《（论语）十则》，完成1—3题 子曰：“学而时习之，不亦说乎?有朋自远方来，不亦乐乎?人不知而不愠，不亦君子乎?”（《学而》） 曾子曰：“吾日三省吾身：为人谋而不忠乎？与朋友交而不信乎？传不习乎？”（《学而》） 子曰：“温故而知新，可以为师矣。”（《为政》） 子曰：“学而不思则罔，思而不学则殆。”（《为政》） 子曰：“由，诲女知之乎！知之为知之，不知为不知，是知也。”（《为政》） 子曰：“见贤思齐焉，见不贤而内自省也。”（《里仁》） 子曰：“三人行，必有我师焉。择其善者而从之，其不善者而改之。”（《述而》） 子贡问曰：”有一言而可以终身行之者乎？” 子曰：“其恕乎!己所不欲，勿施于人。”（《卫灵公》） 1．从选文中摘出两个成语。____________ _____________ 2．翻译句子。 （1）学而时习之，不亦说乎 （2）见贤思齐焉，见不贤而内自省也 3．上文《论语》中有的谈求知态度，有的谈学习方法和修身做人，请你选择你最喜欢的一则来谈谈你所获得的启示。 【答案】 1．温故知新见贤思齐 三人行，必有我师择善而从己所不欲，勿施于人 2．学习了（知识），然后按一定的时间去实习（温习）它，不也高兴吗 看见贤人要想着向他看齐，看见不贤的人要反省自己有没有跟他相似的毛病 3．温故而知新它告诉我一个学习方法，通过思考，就能发现旧知与新知之间的联系。
2014.9 I．单词拼写： 1．She is not very ________(一致的)in the way she treats her children. 2．There stands a ________(雕像)of the general on a horse. 3．To his ________(快乐；喜悦)，his son was admitted to Fudan University. 4．Shall we go ________(观光)to Shanghai this spring? 5．Can you ________(安排)for a car to collect them from the airport? 6．After several repetitions there still remains an/a ______(错误)． 7．I'm absolutely ________(使激动)that you are coming. 8．I hope that what I say will________(澄清) the situation. 9．We find our folding table a great________(方便)． 10．________(粗略地)speaking，I'd say the cost of our food is about D|S500. 11．The bank refused further________(信贷) to the company. 12．He is________(不愿意) to admit defeat. 13．If so，your points of view are bound to________(冲突) with his. 14．We should not try to________(完成) two tasks at once. 15．Two p________ five is seven. 16. It is reported that Hong Kong’s GDP is about the same size as that of Guangdong P. 17. We hope all the members will u closely around the manager. 18. In my opinion, our greatest happiness c in serving the people. 19. The room was f with a desk, a telephone and a hat stand. 20. The basketball match was so exciting that it t everyone present at the stadium II．单项填空： 1．—I'm afraid the theory is beyond our understanding，Professor Black. —OK.I'll give you some examples to________it. A．instruct B．clarify C．absorb D．handle 2．If it is quite________to you，I will visit you next Tuesday. A．convenient B．fair C．easy D．comfortable 3．Since everyone is a little tired，shall we________our discussion and have some tea or coffee，please? A．break down B．break up C．break into D．break off 4．The film named Crazy Stone has a lot of ________for young people. A．attractions B．attraction C．interest D．attack 5．They looked disappointed because they didn't ________the purpose desired. A．clarify B．accomplish C．make D．obtain 6．A great number of students______said they were forced to practise the piano. A．to question B．to be questioned C．questioned D．questioning 7．________，the young man has succeeded in accomplishing the task. A．To his great credit B．Great to his credit C．To his much credit D．To his greatly credit
2017级高三上学期期中考历史试题 试题选编 一、选择题：本题共48个小题，每小题1分，共48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.商代早期的卜辞中，“帝”是掌管风雨、年成及王的祸福的天神，到商朝末期，祖先神逐渐成 为晚商社会的最高神，并由此出现了帝祖崇拜合一的趋势，进而促进了现实中王权的发展。 这种人神关系的发展反映出 A．宗法制确立B．政治的理性化 C．小农经济发展D．专制王权加强 2.《周礼·考工记》载：“攻木之工七，攻金之工六，攻皮之工五，设色之工五，刮摩之工五， 抟埴之工二。”材料所反映的当时官营手工业生产的显著特点是 A．分工细致，生产专业化B．产品丰富，生产多样化 C．技术先进，生产标准化D．产量庞大，生产规模化 3.据《乐记·乐论》载：乐者，天地之和也；礼者，天地之序也。和，故百物皆化；序，故群物 皆别。乐由天作，礼以地制。过制则乱，过作则暴。明于天地，然后能兴礼乐也。该材料A．明确了社会的等级关系B．规范了宗庙社稷的祭祀活动 C．强调了统治秩序与和谐 D.制定了贵族政治生活的总则 4.孔子说，君子在与他人保持和谐友善的同时还能坚持独立思想而不苟同于人，小人习惯于附和 苟同别人的观点，但内心深处却并不友善。后世儒者经常以此诫勉君臣，这体现出儒学 A．具有调节政治关系的功能B．具有维护社会秩序的作用 C．倡导与人为善、社会和谐D．重视人格独立和思想自由 5.春秋时期，养士之风兴起，但被时人指责为私心膨胀、不忠谋逆的行为；战国时期，养士成为 上层社会竞相标榜的一种时髦风气。"战国四公子"、秦相吕不韦门下都收养着数千门客，形成了"士无常君，国无定臣"的观念。这一变化说明 A.儒家学说不受时人重视 B.“礼崩乐坏”的局面不可逆转 C.开放兼容观念已成强国共识 D.士族门阀开始兴起 6.春秋战国时期，商人频频交结王侯，各诸侯国君也非常重视商人阶层。如郑国国君与商人“世有 盟誓”；晋国“绛之富商，能金玉其车，交错其服，能行诸侯之贿。”材料表明各诸侯国君重视与商人阶层关系的主要目的是 A．成就霸业政治的需要B．实行宽松商业政策 C．改变社会斗富逐利之风D．重建官营商业制度 7.《国语.越语》中记载，妇女快分娩时得报告官府，由官府派医生守护，生男孩的奖励两壶酒一 条狗，生女孩的奖励两壶酒一口猪。生三个子女的，由官府派给乳母哺育。该措施 A.反映了传统的重男轻女 B.反映了越国徭役赋税繁重 C.使越国的国力得到增强 D.有利于经济的恢复和发展 8.战国时期，时常出现学派因内部意见不一而分裂的现象，相传孔子死后，儒分为八，墨子死后， 墨分为三。这表明 A.各派学说随时代不断革新 B.分散的小农经济影响学术发展 C.学在民间推动学术自由 D.政治的分裂状况日益严重
2021数学广东汕头金山中学南分校九年级下第一次月考试卷 第一次月考初三数学试卷 一．选择题(每小题4分共32分) 1、下列四个图形中，既是轴对称图形，又是中心对称图形的是（ ） 2．关于x 的一元二次方程x 2 －3x ＋a=0的一个解是x=－1，则它的另一个解是（ ）． A ．x=1 B ．x=2 C ．x=3 D ．x=4 3、某市2009年的国民生产总值约为333.9亿元，估量2010年比上一年增长10%，用科学计数法表示2007年怀化市的国民生产总值应是（结果保留3个有效数字）（ ） Ａ．10 3.6710?元 Ｂ．103.67310?元 Ｃ．113.6710?元 Ｄ．8 3.6710?元 4、与如图所示的三视图对应的几何体是( ) 5.两个完全相同的长方体的长、宽、高分别为3、2、1，把它们叠放在一起组成一个新的长方体，在这些新长方体中，表面积最小值为 ( ) A ．42 B ． 38 C ．20 D ．32 6. 如图,扇形OAB 是一个圆锥的侧面展开图,若小正方形方格的边 长为1, 则那个圆锥的底面半径为( ) A. 2 1 B. 22 C. 2 D. 22 7．反比例函数223 k k y x ++=-（k 为常数，0k ≠）的图象位于（ ） Ａ．第一、二象限 Ｂ．第一、三象限 A ． B ． C ． D ． B A O
Ｃ．第二、四角限 Ｄ．第三、四象限 8.如图，点A 的坐标是（1，1），若点B 在x 轴上，且△ABO 是 等腰三角形，则点B 的坐标不可能．．．是（ ）． A.（2，0） B.（ 2 1 ，0） C.（2-，0） D.（1，0） 二．填空题(每小题4分共20分) 9．把多项式3 2 2 44x x y xy -+分解因式，结果为 ． 10. 若方程()0212 =++k x 没有实根，则k 的取值范畴是＿＿＿＿； 11、如图，是一个某一高速公路单心圆曲隧道的截面，若路面AB 宽为12米，净高CD 为8米，则此 隧道单心圆的半径 OA 是____________; 12、如图，直线3 22 y x =- +与x 轴、y 轴分别交于A 、B 两点，把△AOB 绕点A 顺时针旋转90°后得到△AO B ''，则点B '的坐标是________; 13．观看下列图案，它们差不多上由边长为1cm 的小正方形按一定规律拼接而成的，依此规律，则第16个图案中的小正方形有 个． 三．解答题(每小题7分共35分) 14.运算： ||1-3－sin60°＋（－52）0 － 4 12． 15.解不等式组： 3(1)7251.3x x x x --?? ?--