九年级期末检测题

昆明市呈贡区2023-2024学年上学期期末学业水平检测九年级化学试卷(检测时间：75分钟满分：90分)注意事项：1.本卷为试题卷。

考生必须在答题卡上解题作答。

答案应书写在答题卡的相应位置上，在试题卷、草稿纸上作答无效。

2.考试结束后，请将试题卷和答题卡一并交回。

可能用到的相对原子质量：H-1 C-12 O-16第Ⅰ卷选择题(共40分)一、选择题(本大题共20个小题，每小题2分，共40分。

每小题只有一个选项符合题意，多选、错选或不选均不得分)1.学校直饮水机处应张贴的标识是( )A. B. C. D.2.2005年呈贡瓦猫被列入昆明市级非物质文化遗产。

它的制作过程中属于化学变化的是( )A.精选上好瓦泥B.将瓦泥捏成瓦猫泥坯C.晾晒瓦猫泥坯D.将瓦猫泥坯送入窑中烧制3.呈贡宝珠梨种植已有900多年历史。

其果肉雪白、细嫩、多汁无渣、甜度适口，素有“滇中梨王”之称。

宝珠梨含多种维生素、铁、钾等营养成分。

这里的“铁”，“钾”是指( )A.单质B.元素C.分子D.原子4.化学是一门以实验为基础的科学。

下列实验操作正确的是( )A.倾倒液体B.点燃酒精灯C.检查装置气密性D.过滤5.走进呈贡斗南花卉市场，到处都是美丽的鲜花，香气扑面而来。

这个现象说明( )A.分子是不断运动的B.分子体积很小C.分子具有一定的质量D.分子之间有一定的间隔6.人们对空气污染关注的程度不断加强，下列物质不会造成空气污染的是( )A.二氧化硫B.PM10C.一氧化碳D.二氧化碳7.下列物质由原子构成的是( )A.C60B.金刚石C.一氧化碳D.氯化钠8.空气是一种宝贵的自然资源，下列有关空气及其成分的说法不正确的是( )A.空气中氮气的体积分数约为78%B.稀有气体在通电时能发出不同颜色的光C.氧气具有助燃性，可作燃料D.氮气的化学性质不活泼，可作食品保护气9.2023年10月，神舟十七号载人飞船在酒泉卫星发射中心成功发射，载人飞船应用了金属钛(Ti)，钛主要由钛铁矿(FeTiO3)制备，其中Fe为+2价，则FeTiO3中Ti的化合价为( )A.+3B.+2C.+1D.+410.下列物质发生化学变化时，现象描述正确的是( )A.镁条在空气中燃烧，冒出黑烟，放出热量，生成黑色粉末B.铁丝在氧气中剧烈燃烧，火星四射，放出热量，生成黑色固体四氧化三铁C.向滴有紫色石蕊的水中通入二氧化碳，再加热，颜色变化为：紫色→红色→紫色D.红磷在氧气中燃烧时，产生大量白色烟雾11.分类是学习化学的常用方法。

2023年人教版九年级数学(下册)期末质量检测题及答案 班级： 姓名：一、选择题（本大题共10小题，每题3分，共30分）1．2-的相反数是（ ）A ．2-B ．2C ．12D ．12- 2．已知31416181279a b c ===，，，则a b c 、、的大小关系是（ ）A ．a b c ＞＞B ．a c b ＞＞C ．a b c ＜＜D ．b c a ＞＞3．已知α、β是方程x 2﹣2x ﹣4＝0的两个实数根，则α3+8β+6的值为（ ）A ．﹣1B ．2C ．22D ．304． 某企业今年3月份产值为万元，4月份比3月份减少了10％，5月份比4月份增加了15％，则5月份的产值是（ ）A ．（－10％）（+15％）万元B ．（1－10％）（1+15％）万元C ．（－10％+15％）万元D ．（1－10％+15％）万元5．“凤鸣”文学社在学校举行的图书共享仪式上互赠图书，每个同学都把自己的图书向本组其他成员赠送一本，某组共互赠了210本图书，如果设该组共有x 名同学，那么依题意，可列出的方程是（ ）A ．x （x+1）＝210B ．x （x ﹣1）＝210C ．2x （x ﹣1）＝210D ．12x （x ﹣1）＝210 6．设正比例函数y mx =的图象经过点(,4)A m ，且y 的值随x 值的增大而减小，则m =（ ）A ．2B ．-2C ．4D ．-47．如图，将▱ABCD 沿对角线AC 折叠，使点B 落在B ′处，若∠1=∠2=44°，则∠B 为（ ）A ．66°B ．104°C ．114°D ．124°8．如图,AB 是⊙O 的直径,弦CD ⊥AB 于点E ,5,8OC cm CD cm ==,则AE =( )A ．8cmB ．5cmC ．3cmD ．2cm9．如图，将正方形OABC 放在平面直角坐标系中，O 是原点，点A 的坐标为(1，3)，则点C 的坐标为（ ）A ．(－3，1)B ．(－1，3)C ．(3，1)D ．(－3，－1)10．如图，抛物线2y ax bx c =++的对称轴是1x =．下列结论：①0abc >；②240b ac ->；③80a c +<；④520a b c ++>，正确的有（ ）A ．4个B ．3个C ．2个D ．1个二、填空题（本大题共6小题，每小题3分，共18分）1．计算：169＝__________． 2．分解因式：3x 9x -=_______. 3．已知关于x 的分式方程233x k x x -=--有一个正数解，则k 的取值范围为________.4．如图，点A 的坐标为()1,3，点B 在x 轴上，把OAB ∆沿x 轴向右平移到ECD ∆，若四边形ABDC 的面积为9，则点C 的坐标为__________．5．如图，正方形纸片ABCD 的边长为12，E 是边CD 上一点，连接AE ．折叠该纸片，使点A 落在AE 上的G 点，并使折痕经过点B ，得到折痕BF ，点F 在AD 上．若5DE =，则GE 的长为__________．6．如图，已知Rt △ABC 中，∠B=90°，∠A=60°，AC=23+4，点M 、N 分别在线段AC 、AB 上，将△ANM 沿直线MN 折叠，使点A 的对应点D 恰好落在线段BC 上，当△DCM 为直角三角形时，折痕MN 的长为__________．三、解答题（本大题共6小题，共72分）1．解方程：23121x x =+-2．已知关于x 的一元二次方程：x 2﹣2x ﹣k ﹣2=0有两个不相等的实数根．（1）求k 的取值范围；（2）给k 取一个负整数值，解这个方程．3．如图，在Rt △ABC 中，90C ∠=︒，AD 平分∠BAC ，交BC 于点D ，点O 在AB 上，⊙O 经过A 、D 两点，交AC 于点E ，交AB 于点F ．（1）求证：BC 是⊙O 的切线；（2）若⊙O 的半径是2cm ，E 是弧AD 的中点，求阴影部分的面积（结果保留π和根号）4．如图，AB 为⊙O 的直径，C 为⊙O 上一点，∠ABC 的平分线交⊙O 于点D ，DE ⊥BC 于点E ．（1）试判断DE 与⊙O 的位置关系，并说明理由；（2）过点D 作DF ⊥AB 于点F ，若BE=33，DF=3，求图中阴影部分的面积．5．在水果销售旺季，某水果店购进一优质水果，进价为20元/千克，售价不低于20元/千克，且不超过32元/千克，根据销售情况，发现该水果一天的销售量y （千克）与该天的售价x （元/千克）满足如下表所示的一次函数关系．（1）某天这种水果的售价为23.5元/千克，求当天该水果的销售量．（2）如果某天销售这种水果获利150元，那么该天水果的售价为多少元？6．某商店销售A型和B型两种电脑，其中A型电脑每台的利润为400元，B型电脑每台的利润为500元．该商店计划再一次性购进两种型号的电脑共100台，其中B型电脑的进货量不超过A型电脑的2倍，设购进A型电脑x台，这100台电脑的销售总利润为y元．（1）求y关于x的函数关系式；（2）该商店购进A型、B型电脑各多少台，才能使销售总利润最大，最大利润是多少？（3）实际进货时，厂家对A型电脑出厂价下调a（0＜a＜200）元，且限定商店最多购进A型电脑60台，若商店保持同种电脑的售价不变，请你根据以上信息，设计出使这100台电脑销售总利润最大的进货方案．参考答案一、选择题（本大题共10小题，每题3分，共30分）1、B2、A3、D4、B5、B6、B7、C8、A9、A10、B二、填空题（本大题共6小题，每小题3分，共18分）1、432、()()x x 3x 3+-3、k<6且k ≠34、(4，3)5、49136 三、解答题（本大题共6小题，共72分）1、x =52、（1）k ＞﹣3；（2）取k=﹣2， x 1=0，x 2=2．3、（1）略 （2）23π-4、（1）DE 与⊙O 相切，理由略；（2）阴影部分的面积为25、（1）当天该水果的销售量为33千克；（2）如果某天销售这种水果获利150元，该天水果的售价为25元．6、(1) =﹣100x+50000；(2) 该商店购进A 型34台、B 型电脑66台，才能使销售总利润最大，最大利润是46600元；(3)见解析.。

2023~2024学年度数学九年级期末学业质量检测（B）数学试题共8页，包括六道大题，共26道小题。全卷满分120分。考试时间为120分钟。考试结束后，将本试题和答题卡一并交回。一、单项选择题（每小题2分，共12分）1．如图是由6个完全相同的小正方体组成的几何体，其俯视图为（ ）

A．B．C．D．2．下列运算正确的是（ ）A．B．C．D．3．把不等式的解集在数轴上表示出来，正确的是（ ）

A．B．C．D．4．如图是路政工程车的工作示意图，工作篮底部与支撑平台平行．若，，则的度数为（ ）

第4题A．130°B．140°C．150°D．160°5．如图，中，，，要求用圆规和直尺作图，把它分成两个三角形，其中至少有一个三角形是等腰三角形，其作法错误的是（ ）

A．B．

C．D．

246aa235aaa2222aa33aaa

251x

1302503

RtABC△90ACB30B6．一张直径为40cm的圆饼被切掉了一块，数据如图所示，则优弧ABC的长度为（ ）第6题A．10πcmB．15πcmC．20πcmD．30πcm二、填空题（每小题3分，共24分）

7．计算：______．8．若x与y互为相反数，则______．9．若关于x的一元二次方程有两个不相等的实数根，则k的取值范围是______．10．两个日常生活现象如图所示．能用“垂线段最短”来解释的是______．（填“A”或“B”）

第10题11．如图，五线谱是由等距离、等长度的五条平行横线组成的，同一条直线上的三个点A，B，C都在横线上．若线段．BC=4cm，则线段AC的长是______．

第11题12．如图，一扇卷闸门用一块宽18cm，长80cm的长方形木板撑住，用这块木板最多可将这扇卷闸门撑起______cm高．

第12题13．如图，AB是⊙O的直径，BC是⊙O的切线，点B为切点，线段AC与⊙O交于点D．点E是上的动点（不与点B，D重合）．若，则的度数可能是______°．（写一个即可）

2023-2024学年浙江省温州市九年级上学期期末检测学业水平英语试题The Story of Brighty the BurroThere once lived a grey burro called Brighty in the Grand Canyon. Over the years, this burro won the hearts of local people, tourists and even the President of the US.Brighty first arrived at the ______ in 1892 with two prospectors(采矿者). On their way to the South Rim of the Canyon, the prospectors ______ Brighty near the Colorado River by accident. Brighty was alone in the canyon, but surprisingly, he was ______ no more heavy things to carry！For months, Brighty enjoyed the freedom and the beautiful land. On a very hot day, he walked______ the river to make himself cool and then swam to the North Rim.At the North Rim, Brighty often visited a camp, and there he ______. The caretakers at the camp, the Mckees, _____ treated him like part of the family and made his favourite flapjacks (烙饼) every day. Brighty helped them with their daily ____. He pulled heavy bags of water up to the campground, many times a day!23 Brighty was busy, he still played with children visiting the camp. He always welcomed them and gave rides to them ______.On one special day, President Roosevelt visited the North Rim and planned to create a park in the canyon. Soon ______ arrived and started their work. Whack! Whack! Whack! The unusual sounds caught Brighty's attention. Feeling ______, he went towards the sounds and couldn't believe his eyes. The men were busily building a bridge to connect the North and South Rims. Immediately, the men made ______ help build the bridge with his strong back.At last, the bridge was ______. President Roosevelt gave Brighty an honour: he would be the first to walk over the bridge because he was the oldest and most ______ inhabitant (居民) of the Grand Canyon. Brighty lived in the canyon for almost ______ years and died many years ago, but his stories ______in the canyon.1.A．zoo B．camp C．canyon D．market2.A．hurt B．left C．chose D．followed3.A．mad B．bored C．proud D．happy4.A．near B．into C．across D．along5.A．made friends B．made progress C．made noises D．made mistakes 6.A．hardly B．never C．always D．sometimes7.A．task B．habit C．lesson D．exercise8.A．If B．Since C．Because D．Though9.A．lazily B．rudely C．secretly D．warmly10.A．workers B．children C．visitors D．parents11.A．hopeful B．relaxed C．confident D．surprised12.A．us B．me C．him D．them13.A．cleaned B．changed C．completed D．discovered 14.A．polite B．helpful C．interesting D．successful 15.A．begin B．remain C．return D．finishSAVE THE OCEANSTUDY TOUREvery year, more than 1.1 million tons of plastics end up in the ocean (海洋). It can take centuries for the waste, such as plastic bottles and single-use bags, to break down. That seriously harms wildlife living there. Are you an eco-warrior(生态卫士)？Are you ready to help save the ocean from plastic pollution?For Trivia NightTop 10 eco-warriorscanwin special clothbags.For Beach Clean1st place: an eco-friendly watch2nd place: a recycledumbrella3rd place: a chinacupWatch an Eco-Art Learn about ocean Test your knowledge Collect plastics byFeb.3-Feb.4Town of Oyster Bay16. In which activity will people make a video?A．Art Exhibition. B．DIY Club. C．Trivia Night. D．Beach Clean.17. If Joe wins in Trivia Night, what prize can he get?A．A cloth bag B．An eco-friendlywatch. C．A recycledumbrella.D．A china cup18. What is the study tour about?A．Using the waste. B．Studying oceananimals. C．Living by thesea.D．Fighting plasticpollutionWhen you meet a strange Chinese character(汉字) what will you do? Surely, the most reliable way is to look it up in Xinhua Dictionary.Since its birth in 1953, Xinhua Dictionary has been a must-have book in schools across China. More than 567 million copies had been sold by 2016.So it was even recognized by the Guinness World Records as the "most popular dictionary" that year.Small as the dictionary is, it means a lot to China. The dictionary was given the name Xinhua by the chief editor Wei Jiangong, and it carried the hope of a country reborn. In 1949,around 80%of China's population wasn't able to get education (教育). It was Xinhua Dictionary that had reduced the number to 52% by 1964.To make it easier for illiterate people to understand, the earliest copies had many pictures.Thanks to Xinhua Dictionary, many Chinese got new chances in their life. Mo Yan, the 69-year-old Nobel Laureate, once mentioned the dictionary in his speech. He said that he was lucky to have a copy of the dictionary after dropping out from school. He learned most of Chinese characters from it, and that helped him write novels and enter a college later.This important dictionary has also recorded the development of the language and society. It is revised (修订) every five to ten years. Recent copies have included many new explanations. The character“晒” (to dry something in the sun),fo r example, now has a second meaning: to share. In a way, the dictionary hasn't just explained characters; it has reflected(反映) the way Chinese people think.19. When did Xinhua Dictionary first come out?A．In 1949. B．In 1953. C．In 1964 D．In 201620. What does the underlined phrase “illiterate people” in Paragraph 3 mean?A．People who are bad at maths. B．People who can't draw or sing.C．People who are too old to see. D．People who can't read or write.21. Why does the writer use the example of Mo Yan in Paragraph 4?A．To share a speech about the dictionary. B．To offer advice on using the dictionaryC．To show the influence of the dictionary. D．To explain the development of thedictionary.22. Which part of a magazine is the passage probably taken from?A．Nature. B．People. C．Culture. D．Business.In a noisy restaurant, you can still hear your friend's voice clearly. You talk happily without paying attention to others' conversations. That's because selective(选择性的)attention is helping you.Selective attention is an amazing ability in our brain. It allows people to choose and focus on (专注于) something in the environment. At the same time, it can filter out (过滤) unnecessary information, so people can focus on one conversation in a crowded place. But how does selective attention work? Researchers from Columbia University did an experiment to study it. The result shows that the brain is selective about the sounds it hears. When a person listens to someone talking, their brain waves(波)change to pick out the features of the speaker's voice and filter out other voices.To further understand how selective attention works, the researchers studied two parts of the brain's listening centre: Heschl’s gyrus(HG)and the superior temporal gyrus(STG). Information from the ears reaches HG first, passes through it and arrives at STG later. In the study, they found the following facts: in HG area, every voice is treated the same way. That is to say, HG doesn't prefer one voice or another; But in STG area, it’s possible to choo se one speaker's voice and make it louder. The whole process (过程) only takes 150 milliseconds and it happens immediately to a listener. As a result, people can focus on one voice when there are many other conversations around. “Today's study is quite impor tant. We want to better understand how the brain helps us to hear so well, as well as create technologies that help people,” said Dr. Mesgarani, the leader of the researchers. With the help of the finding, speech recognition technologies have been improved. The researchers have already developed a new kind of hearing aid that can help collect information more correctly. It could make one speaker's voice louder over another. They also plan to study more about HG and STG activity in situations that have more speakers.23. What can selective attention help people do according to the passage?A．Choose where to talk. B．Hear more in a conversationC．Forget unnecessary information. D．Focus on one voice in a noisy place.24. Which picture shows the process in the listening centre?A．B．C．D．25. What will the researchers most probably study in the future?A．How to improve listening B．How the listening centre works.C．How to make a better hearing aid. D．How HG and STG protect each other.26. What's the best title for the passage?A．A Great Ability in Brain B．A New Study on TechnologiesC．A Key to Reducing Noise D．A Way to Make ConversationIt was late on Christmas Eve. Reyn, the owner of a watch repair shop, was preparing to close the door when he suddenly saw a young man walking towards his shop. The man looked pale and serious in a thin jacket. Reyn noticed the hand of the man shaking uneasily in the right pocket of the jacket. "Maybe there's a pistol (手枪) in it, "Reyn's heart beat fast, but a voice inside him said, "Don't be afraid."The man came closer and said in a low voice, "Give me the money. Right now!" Reyn took a deep breath and smiled, pointing to his ear and pretending (假装) that he was unable to hear anything. The man looked surprised.For a long time, the two people just stood face to face, in silence. Just then, Reyn noticed a watch on the man's wrist. It was an old one worth no more than 5 pounds, but it was the most valuable thing on him. The watch seemed to go wrong. An idea then came into his mind.He pointed to the man's watch and picked up the tool used for repairing. “Does he want to help me repair the watch? “The man thought and suddenly became embarrassed. Looking at him, Reyn understood that the man had no choice but to ask for money on such an evening. Reyn began to feel sorry for him.The watch was common, but at this moment it had great power-it kept the two men in balance and gave Reyn time to find a way out.Reyn started to repair the watch carefully and this action won the man's trust. His hand came out of his pocket, and he even watched Reyn with interest.However, Reyn purposely left out the last small part, so the watch still couldn't work. He put down the watch, shaking his head to show that he couldn't repair it.T hen he pointed to his “pawn(典当)shelf” full of clocks and watches. Reyn wrote a note, explaining that he'd like to pay the man some money if he wanted to pawn the watch. Then he took out f100 and handed it to the man. The man looked at the money thankfully. He knew that his watch wasn't worth much.Three months later, Reyn received a remittance (汇款) of f100,together with a message from the young man: “▲ ”27. What happened between Reyn and the man at the beginning?A．The man closed Reyn's shop. B．The man asked for Reyn's money.C．Reyn gave the man a thin jacket. D．Reyn lost hearing because of the man. 28. Why did Reyn help the young man repair the old watch?A．Because he found the watch valuable. B．Because he thought the man was poor.C．Because he hoped to escape from the trouble D．Because he needed to show his excellent skills29. How did Reyn's feelings change in the story?A．Afraid-calm-sorry-happy. B．Angry-sorry-relaxed-afraid.C．Afraid-sorry-excited-calm. D．Angry-relaxed-happy-sorry.30. What did the young man probably write in the message? (请用约40词回答。