湖南长沙青竹湖湘一外国语学校九年级化学上册 《水的净化》 现场

2024届湖南省长沙市开福区青竹湖湘一外国语学校九年级化学第一学期期中综合测试试题请考生注意：1．请用2B铅笔将选择题答案涂填在答题纸相应位置上，请用0．5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。

写在试题卷、草稿纸上均无效。

2．答题前，认真阅读答题纸上的《注意事项》，按规定答题。

一、单选题（本题包括12个小题，每小题3分，共36分．每小题只有一个选项符合题意）1．豆类、动物肝脏中含有丰富的铁和锌，这里的“铁”、“锌”是指（）A．原子B．分子C．元素D．单质2．下列关于资源和能源的叙述中正确的是( )A．目前已制得的纯金属只有90余种，合金已达几百种B．海洋是巨大的资源宝库，海水中含有80多种元素C．现在世界上每年因腐蚀而报废的金属设备和材料相当于年产量的40%以上D．地壳中含量最多的金属元素及目前世界年产量最高的金属都是铁3．下列实验操作正确的是（）A．加热液体B．检查装置气密性C．倾倒液体D．读取液体体积4．下列物质，属于纯净物的是A．食醋B．冰水共存物C．加碘食盐D．净化后的空气5．下列关于电解水实验的说法中，错误的是（）A．正极产生的气体可以使带火星的木条复燃B．负极产生气体的体积约是正极产生气体的体积的2倍C．这个实验证明了水是由氢气和氧气组成的D．电解水中加入稀硫酸或硫酸钠的目的是为了增加导电性6．下列关于氧气的说法，正确的是( )A．铁在氧气中燃烧生成Fe2O3B．燃烧需要氧气，说明氧气具有可燃性C．硫在氧气中燃烧发出蓝紫色火焰D．红磷在空气中燃烧产生白雾7．以下关于分子、原子、离子的说法正确的是（）A．分子是保持物质性质的最小粒子B．原子的质量主要集中在原子核上C．原子都由质子、中子和电子构成D．原子得到电子带正电，形成阳离子8．用推拉注射器活塞的方法可以检查如图装置的气密性．当缓缓推进活塞时，如果装置气密性良好，能观察到的现象是A．左侧玻璃管内液面上升B．有液体进入注射器内C．左侧玻璃导管口产生气泡D．试管内液面明显上升9．西达本胺是一种抗癌物质．其化学式为C11H19FN4O1．下列说法正确的是A．西达本胺属于混合物B．西达本胺由48种元素组成C．一个西达本胺分子中含有一个氧分子D．西达本胺中碳元素的质量分数最大10．分析推理是一种重要的化学思维方法，以下推理正确的是A．单质中只含有一种元素，则只含有一种元素的物质一定是单质B．H2O和H2O2的组成元素相同，则它们的化学性质一定相同C．氮气的化学性质不活泼且不可供呼吸，故可用做粮食瓜果的保护气D．化学变化常伴随发光、变色等现象，则有发光、变色等现象的变化一定是化学变化11．下列有关物质的用途中，利用其物理性质的是（）A．氧气用于炼钢B．铜用于制导线C．氮气用作灯泡填充气D．磷用于制造烟雾弹12．宣传科学，揭露伪科学，是中学生的义务。

2023-2024学年长沙市开福区青竹湖湘一外国语学校九年级上学期第一次月考数学试卷一、选择题（本大题共10小题，共30.0分。

在每小题列出的选项中，选出符合题目的一项）1.―18的倒数是( )A. 8B. ―8C. 18D. ―182.下列运算正确的是( )A. (a2)3=a5B. a+2a=2a2C. 2+3=5D. x(1+y)=x+xy3.大家翘首以盼的长株潭城际铁路将于2016年年底通车.通车后，从长沙到株洲只需24分钟，从长沙到湘潭只需25分钟，这条铁路线全长95500米，则数据95500用科学记数法表示为( )A. 0.955×105B. 9.55×105C. 9.55×104D. 95.5×1034.下列图形中既是轴对称图形又是中心对称图形的是( )A. B. C. D.5.已知点P(2a―1,1―a)在第一象限，则a的取值范围在数轴上表示正确的是( )A. B. C. D.6.一次函数y=―5x+3的图象经过的象限是( )A. 一，二，三B. 二，三，四C. 一，二，四D. 一，三，四7.如图，AB//DE，∠E=65°，则∠B+∠C=( )A. 135°B. 115°C. 36°D. 65°8.如图，菱形ABCD的对角线AC，BD的长分别为6cm，8cm，则这个菱形的周长为．( )A. 5cmB. 10cmC. 14cmD. 20cm9.如图，在⊙O中，AB=AC，∠AOB=50°，则∠ADC的度数是( )A. 50°B. 40°C. 30°D. 25°10.如图，等边三角形ABC中，AD⊥BC，垂足为D，点E在线段AD上，∠EBC=45°，则∠ACE等于A. 15°B. 30°C. 45°D. 60°二、填空题（本大题共6小题，共18.0分）11.分解因式：3a2+6a+3=______．12.如图，PA，PB是⊙O的切线，切点分别为A，B.若∠OBA=30°，PA=3，则AB的长为．13.超速行驶是交通事故频发的主要原因之一．交警部门统计某日7：00～9：00经过高速公路某测速点的汽车的速度，得到如下频数分布折线图，若该路段汽车限速为110km/ℎ，则超速行驶的汽车有______辆．14.如图，AB为⊙O的直径，弦CD⊥AB于点E，已知CD=8，EB=2，则⊙O的半径为______．15.如图，△ABC中，∠C=30°.将△ABC绕点A顺时针旋转60°得△ADE，AE与BC交于F，则∠AFB=°.16.A、B、C、D、E五名学生猜测自己的数学成绩：A说：如果我得优，那么B也得优；B说：如果我得优，那么C也得优；C说：如果我得优，那么D也得优；D说：如果我得优，那么E也得优.大家说的都没有错，但只有三个人得优，请问得优的三个人是______ ．三、解答题（本大题共9小题，共72.0分。

2023-2024-1青竹湖湘一九上入学考试英语注意事项：1、答题前，请考生先将自己的姓名、准考证号填写清楚，并认真核对条形码上的姓名、准考证号、考室和座位号；2、必须在答题卡上答题，在草稿纸、试题卷上答题无效；3、答题时，请考生注意各大题题号后面的答题提示；4、请勿折叠答题卡，保持字体工整、笔迹清晰、卡面清洁;5、答题卡上不得使用涂改液、涂改胶和贴纸；6、本学科试卷中听力材料以中速朗读两遍。

试卷分四个部分，50小题，时量80分钟，满分100分。

I．阅读（共三节，满分50分）第一节（共15小题；每小题2分，满分30分）阅读下列材料，从每题所给的A、B、C三个选项中，选出最佳选项。

AIn order to help you learn more about America, here is a study tour. On the tour, you can learn something new and relax at the same time.15-day American study tourTime July 16th – July 30thActivities Go to the Metropolitan Museum of ArtTake classes with American students in Columbia University Visit Time Square, Brooklyn Bridge and the Statue of LibertyTotal fee(费用)3,000 dollars1. The study tour includes visits to the following places EXCEPT(除了) _______.A. a museumB. a fun parkC. a university2. What’s the purpose(目的) of the study tour?A. To help students learn how to relax.B. To take classes in the universities.C. To learn more about the US.BSeptember. 17&18, 2023ITEMS(物品) NEEDEDStarting date for Collection: September 1Deadline(截止日期): September 13 (no items will be accepted after this date)Do you have books, toys, records, DVDs or other items just collecting dust(灰尘)? Time to clean out the house and bring your items to Parish Hall.● All collection items must be in working order.● No clothing, computers, TVs, or encyclopedias(百科全书) accepted.● Those offering to help can call Jane at (401) 1024-10515 or email Jane at ******************.3. Item collection ends on _______.A. Sept. 1B. Sept. 13C. Sept. 184. Which of the following items is NOT accepted?A. Records.B. DVDs.C. TVs.5. What can you do if you want to be a volunteer at the yard sale?A. Search on the Internet.B. Send an email to Jane.C. Call (401) 1024-10551.CAn adventure-loving red panda’s escape(逃跑) fromAdelaide Zoo has come to an end. The red panda named Raviran away from Adelaide Zoo in search of freedom on Friday,August 12, just a few days after moving to the zoo. Zookeepersspent hours searching the zoo and neighboring Botanic Park forthe star.On Sunday morning that week, a security officer(安保人员) noticed a red tail in a tree in Botanic Park. Ravi’s keepers gave a lot of treats to lure him down — but sweet corn and bamboo were not as sweet as freedom. In the end, the panda was brought down with a tranquilizer gun(镇定枪) shot by a highly trained zookeeper. Adelaide Zoo director(负责人) Dr. Phil Ainsley said the star would spend the next two to three days in an animal health center.Before moving to Adelaide, the seven-year-old red panda lived with the famous Irwin family at Australia Zoo, where he got lots of attention. Dr. Ainsley said that week’s bad weather, along with Ravi still missing his old home, could lead to his escape.The zoo reviewed(复盘) Ravi’s escape in the following days. They want to make sure that they understood how he escaped before putting him back in the zoo. The zookeeper said, the red panda could use the climb tunnel(通道) to reach a big tree near the zoo’s gate. And he probably spent most of his time on the run sitting in a tree. Dr. Ainsley said zookeepers would get more training in case(以防) a similar accident should happen again.6. How long did Ravi escape from Adelaide Zoo?A. For a whole day.B. For about three days.C. For about seven years.7. What does the underline word “lure” mean?A. 引诱.B. 阻止.C. 逮捕.8. Where did Ravi live after leaving Botanic Park?A. In an animal health center.B. At Australia Zoo.C. In Irwin’s own house.9. Which of the following is the reason for Ravi’s escape?①The bad weather that week.②More attention from Adelaide Zoo.③The terrible conditions at Adelaide Zoo.④Ravi’s strong feelings for his old home.A. ①②B. ③④C. ①④10. What can we infer(推断) from the passage?A. The red panda Ravi is bad at climbing trees.B. Adelaide Zoo will improve the living condition for red pandas.C. The zookeepers in Adelaide Zoo will take some training classes.DDo you yawn? There are about 20 reasons that scientiststhink are possible for yawning after research. They do not know exactly why yawning happens, but they do know many facts about yawning.We know that everyone yawns in the same way. First you open your mouth slowly. Your mouth stays open for about five seconds. You take in a lot of air and yawn then push it out. Then you quickly close your mouth. We also know that yawning is ▲. When you see someone yawn, you yawn, too.Many people say they yawn because they are bored or tired. That might be true. People do often yawn before they sleep and after they wake up. However, we know that people also yawn where they are excited or nervous. Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn can help a warm brain cool down.Some scientists believe that yawning makes you notice things more quickly. When you yawn you breathe deeply. You also stretch(拉伸) the muscles(肌肉) in your face, mouth, and neck. Maybe this helps you to be quicker to notice things.In some countries, people think yawning is not nice. People put their hands over their mouths to cover a yawn. In other countries, people think yawning is healthy. They think that opening the mouth very big can let good things in. When they breathe out, they think that bad things go out of the body with the air.Scientists won’t spend much time studying yawning. That is probably because yawning does not hurt. It is just something we do.11. Which of the following is the best to fill in ▲in Paragraph 2?A. able to spread(传播) easilyB. able to change quicklyC. able to breathe quickly12. In some scientists’ opinion, how does yawning make people notice things more quickly?A. By cheering people up.B. By cooling down people’s warm brains.C. By stretching the muscles in faces, mouths and necks.13. What is Paragraph 5 mainly about?A. Advantages of yawning.B. Disadvantages of yawning.C. Different ideas about yawning.14. What can we learn from the passage?A. Yawning is bad for people’s health.B. All the people yawn in the same way.C. Scientist will do further research on yawning.15. Why does the writer write the passage?A. To show the research on yawning.B. To explain why yawning happens.C. To introduce some facts about yawning.第二节(共5小题；每小题2分，满分10分)阅读下面短文内容，从短文后的选项中选出能填入空白处的最佳选项。

湖南省长沙市青竹湖湘一外国语学校2024-2025学年九年级上学期第一次月考数学试题一、单选题1．以下图标中既是轴对称图形又是中心对称图形的是（ ）A ．B ．C ．D ． 2．下列各式计算结果为6a 的是（ ）A ．23a a gB ．33a a +C ．122a a ÷D ．()422a a ÷ 3．2024年5.5G 技术正式开始商用，它的数据下载的最高速率从5G 初期的1Gbps 提升到10Gbps ，给我们的智慧生活“提速”.其中10Gbps 表示每秒传输10000000000 位(bit )的数据. 将10000000000用科学记数法表示应为（ ）A ．110.110⨯B ．10110⨯C ．11110⨯D ．91010⨯ 4．某校八年级准备从甲、乙、丙、丁四个科创小组中选出一组代表学校参加西山区青少年科技创新大赛，各组的平时成绩的平均数x (单位：分)及方差2s 如表所示：如果要选出一个成绩较好且状态稳定的组去参赛，那么应选的组是（ ）A ．甲B ．乙C ．丙D ．丁5．若函数2(2)4y k x k =++-是正比例函数，则k 的值是（ ）A ．2k ≠-B ．2k =±C ．2k =D ．12k = 6．关于一次函数32y x =-+，下列说法正确的是（ ）A ．图象过点()1,1B ．其图象可由3y x =的图象向下平移2个单位长度得到C ．y 随着x 的增大而增大D ．图象经过第一、二、四象限7．若一个多边形每一个内角都为144︒，则这个多边形的边数是（ ）A ．6B ．8C ．10D ．128．如图，直线//AB CD ，直线EF 分别与直线AB ，CD 交于点E ，F ，点G 在直线CD 上，GE ⊥EF ．若155∠=︒，则∠2的大小为（ ）A ．145°B ．135°C ．125°D ．120°9．设方程220x x +-=的两个根为α，β， 那么αβαβ++的值等于（ ）A ．3-B ．1-C ．1D ．310．二次函数2y ax bx c =++的图象如图所示，对称轴是直线1x =-，则过点(),2M c a b -和点()24,N b ac a b c --+的直线一定不经过（ ）A ．第一象限B ．第二象限C ．第三象限D ．第四象限二、填空题11．要使得式子 a 的取值范围是．12．因式分解∶ 39a a -=．13．如果实数m n ，满足方程组271m n m n -=⎧⎨+=-⎩，那么2m n -=．14．将直线24y x =-向上平移2个单位长度后的直线与x 轴的交点坐标为 ．15．如图，菱形ABCD 的对角线AC 与BD 相交于点O ， E 为边BC 的中点，连接OE ．若6AC =，8BD =，则OE =．16．如图，某小区要在长为16m ，宽为12m 的矩形空地上建造一个花坛，使花坛四周小路的宽度相等，且花坛所占面积为空地面积的一半，则小路宽为m ．三、解答题17．计算∶ ()101202422π-⎛⎫-- ⎪⎝⎭． 18．先化简，再求代数式21321211x x x x x -⎛⎫-÷ ⎪--+-⎝⎭的值，其中2x =． 19．在如图所示的直角坐标系中，画图并解答下列问题：(1)分别写出A 、B 两点的坐标；(2)将ABC V 绕点A 顺时针旋转90︒，画出旋转后的11AB C △；(3)求ABC V 的面积．20．某中学在全校范围开展“创文创卫我知晓”的答题活动（满分100分），现随机抽取了部分参赛学生的成绩进行调查，下面是根据调查情况绘制的统计表．注：其中成绩在“B．8090x≤<”的最高分为78分．≤<”的最低分为82分，成绩在“C．7080x请根据表格信息，解答下列问题：(1)填空：m=______，n=______．(2)本次抽取的学生成绩的中位数为______分．(3)若参与本次答题活动的学生共860人，试估计成绩在70分及以上的学生人数．21．如图，在ABCV中，CD是AB边上的中线，E是CD的中点，过点C作AB的平行线交AE的延长线于点F，连接BF．(1)求证：四边形CDBF为平行四边形；(2)若CA CB=，试判断四边形CDBF的形状，并说明理由．22．2024年是农历甲辰龙年，含有“龙”元素的饰品深受大众喜爱．商场购进一批单价为70元的“吉祥龙”公仔，并以每个80元售出．由于销售火爆，公仔的销售单价经过两次调整后，上涨到每个125元，此时每天可售出75个．(1)若销售单价每次上涨的百分率相同，求该百分率；(2)市场调查发现：销售单价每降低1元，其销售量相应增加5个．那么销售单价应降低多少，才能使每天所获销售利润最大？最大利润是多少？23．如图， 在 Rt ABC △中，90,6,8B AB BC ∠=︒==，把 ABC V 绕BC 边的中点O 旋转后得 DEF V ，A 的对应点为D ，B 的对应点为E ，若直角顶点E 恰好落在AC 边上，连接BE ，且DF 边交AC 边于点G ．(1)证明：GF GE =；(2)判断△FCG 的形状并说明理由；(3)求△FCG 的面积．24．在平面直角坐标系中，若关于x 的函数()20y ax bx c x =++>的图像记为1Q ，将1Q 的图像绕着原点旋转180︒得到图像2Q ，我们把1Q 和2Q 合起来的总图像称为 ²y ax bx c =++的“青一对称”图像．(1)若()1010,A m -在 24y x =+的“青一对称”图像上，则 m =；(2)若(),7B n 在 245y x x =--的“青一对称”图像上，求n 的值；(3)当二次函数22y x x t =-+的“青一对称”图像与直线1y x =+有且只有三个交点时，请求出t 的值或取值范围．25．如图， 抛物线()2430y ax ax a a =-+≠交x 轴于点A 、B 两点，与y 轴交于点()0,3C -，其顶点为点D ．(1)求a的值和顶点D的坐标；M m，若点C、D以M为中心对称的对称点分别是C'、D¢，请判(2)在x轴上有一动点(),0断以C、D、C'、D¢为顶点的四边形可能是正方形吗？若存在，求出对应的点M的坐标；若不存在，请说明理由；(3)若N是直线x=1上的一动点，把ON绕点N旋转90°，原点O的对应点为O'，若点O'恰好落在抛物线上，请求出所有符合条件的点N的坐标．。