高考真题单选试题(18)
2024年江苏省高考化学真题试卷含答案

2024年高考江苏卷化学试题一、单选题1.我国探月工程取得重大进展。
月壤中含有Ca 、Fe 等元素的磷酸盐,下列元素位于元素周期表第二周期的是A .OB .PC .CaD .Fe2.反应2242PbS+4H O =PbSO +4H O 可用于壁画修复。
下列说法正确的是A .2-S 的结构示意图为B .22H O 中既含离子键又含共价键C .24SO -中S 元素的化合价为6+D .2H O 的空间构型为直线形3.实验室进行铁钉镀锌实验。
下列相关原理、装置及操作不正确的是A B C D配制NaOH 溶液铁钉除油污铁钉除锈铁钉镀锌A .A B .B C .C D .D4.明矾()422KAl SO 12H O ⎡⎤⋅⎣⎦可用作净水剂。
下列说法正确的是A .半径:()()3Al K r r ++>B .电负性:()()χO χS >C .沸点:22H S H O>D .碱性:()3Al OH KOH >催化剂能改变化学反应速率而不改变反应的焓变,常见催化剂有金属及其氧化物、酸和碱等。
催化反应广泛存在,如豆科植物固氮、石墨制金刚石、2CO 和2H 制33CH OCH (二甲醚)、25V O 催化氧化2SO 等。
催化剂有选择性,如24C H 与2O 反应用Ag 催化生成(环氧乙烷)、用22CuCl /PdCl 催化生成3CH CHO 。
催化作用能消除污染和影响环境,如汽车尾气处理、废水中3NO -电催化生成2N 、氯自由基催化3O 分解形成臭氧空洞。
我国在石油催化领域领先世界,高效、经济、绿色是未来催化剂研究的发展方向。
完成下列小题。
5.下列说法正确的是A .豆科植物固氮过程中,固氮酶能提高该反应的活化能B .24C H 与2O 反应中,Ag 催化能提高生成3CH CHO 的选择性C .22H O 制2O 反应中,2MnO 能加快化学反应速率D .2SO 与2O 反应中,25V O 能减小该反应的焓变6.下列化学反应表示正确的是A .汽车尾气处理:222NO 4CO N 4CO ++催化剂B .3NO -电催化为2N 的阳极反应:3222NO 12H 10e N 6H O-+-++=↑+C .硝酸工业中3NH 的氧化反应:32224NH +3O 2N +6H OΔ催化剂D .2CO 和2H 催化制二甲醚:22332O 2CO H CH OC 3H 6H −−−−++→催化剂高温、高压7.下列有关反应描述正确的是A .32CH CH OH 催化氧化为3CH CHO ,32CH CH OH 断裂C-O 键B .氟氯烃破坏臭氧层,氟氯烃产生的氯自由基改变3O 分解的历程C .丁烷催化裂化为乙烷和乙烯,丁烷断裂σ键和π键D .石墨转化为金刚石,碳原子轨道的杂化类型由3sp 转变为2sp 8.碱性锌锰电池的总反应为22Zn 2MnO H O ZnO 2MnOOH ++=+,电池构造示意图如图所示。
2018年高考真题全国2卷生物(附答案解析)

绝密★启用前2018年普通高等学校招生统一考试生物试题卷一、单选题1.下列关于人体中蛋白质功能的叙述,错误的是A.浆细胞产生的抗体可结合相应的病毒抗原B.肌细胞中的某些蛋白质参与肌肉收缩的过程C.蛋白质结合Mg2+形成的血红蛋白参与O2运输D.细胞核中某些蛋白质是染色体的重要组成成分2.下列有关物质跨膜运输的叙述,正确的是A.巨噬细胞摄入病原体的过程属于协助扩散B.固醇类激素进入靶细胞的过程属于主动运输C.神经细胞受到刺激时产生的Na+内流属于被动运输D.护肤品中的甘油进入皮肤细胞的过程属于主动运输3.下列有关人体内激素的叙述,正确的是A.运动时,肾上腺素水平升高,可使心率加快,说明激素是高能化合物B.饥饿时,胰高血糖素水平升高,促进糖原分解,说明激素具有酶的催化活性C.进食后,胰岛素水平升高,其既可加速糖原合成,也可作为细胞的结构组分D.青春期,性激素水平升高,随体液到达靶细胞,与受体结合可促进机体发育4.有些作物的种子入库前需要经过风干处理,与风干前相比,下列说法错误的是A.风干种子中有机物的消耗减慢B.风干种子上微生物不易生长繁殖C.风干种子中细胞呼吸作用的强度高D.风干种子中结合水与自由水的比值大5.下列关于病毒的叙述,错误的是A.从烟草花叶病毒中可以提取到RNAB.T2噬菌体可感染肺炎双球菌导致其裂解C.HIV可引起人的获得性免疫缺陷综合征D.阻断病毒的传播可降低其所致疾病的发病率6.在致癌因子的作用下,正常动物细胞可转变为癌细胞,有关癌细胞特点的叙述错误A.细胞中可能发生单一基因突变,细胞间黏着性增加B.细胞中可能发生多个基因突变,细胞的形态发生变化C.细胞中的染色体可能受到损伤,细胞的增殖失去控制D.细胞中遗传物质可能受到损伤,细胞表面的糖蛋白减少二、非选择题7.为了研究某种树木树冠上下层叶片光合作用的特性,某同学选取来自树冠不同层的A、B两种叶片,分别测定其净光合速率,结果如图所示。
2024年湖南省高考化学真题试卷含答案

2024年湖南高考化学试题一、单选题1.近年来,我国新能源产业得到了蓬勃发展,下列说法错误的是A.理想的新能源应具有资源丰富、可再生、对环境无污染等特点B.氢氧燃料电池具有能量转化率高、清洁等优点C.锂离子电池放电时锂离子从负极脱嵌,充电时锂离子从正极脱嵌D.太阳能电池是一种将化学能转化为电能的装置2.下列化学用语表述错误的是A.NaOH的电子式:B.异丙基的结构简式:C.NaCl溶液中的水合离子:D.Cl2分子中σ键的形成:3.下列实验事故的处理方法不合理的是实验事故处理方法A被水蒸气轻微烫伤先用冷水处理,再涂上烫伤药膏B稀释浓硫酸时,酸溅到皮肤上用3−5%的NaHCO3溶液冲洗C苯酚不慎沾到手上先用乙醇冲洗,再用水冲洗D不慎将酒精灯打翻着火用湿抹布盖灭A.A B.B C.C D.D4.下列有关化学概念或性质的判断错误的是A.CH4分子是正四面体结构,则CH2Cl2没有同分异构体B.环己烷与苯分子中C-H键的键能相等C.甲苯的质谱图中,质荷比为92的峰归属于D.由R4N+与PF−6组成的离子液体常温下呈液态,与其离子的体积较大有关5.组成核酸的基本单元是核苷酸,下图是核酸的某一结构片段,下列说法错误的是A.脱氧核糖核酸(DNA)和核糖核酸(RNA)结构中的碱基相同,戊糖不同B.碱基与戊糖缩合形成核苷,核苷与磷酸缩合形成核苷酸,核苷酸缩合聚合得到核酸C.核苷酸在一定条件下,既可以与酸反应,又可以与碱反应D.核酸分子中碱基通过氢键实现互补配对6.下列过程中,对应的反应方程式错误的是A《天工开物》记载用炉甘石(ZnCO3)火法炼锌2ZnCO3+C高温2Zn+3CO↑B CaH2用作野外生氢剂CaH2+2H2O=Ca(OH)2+2H2↑C饱和Na2CO3溶液浸泡锅炉水垢CaSO4(s)+CO2−3(aq)⇌CaCO3(s)+SO2−4(aq)D绿矾(FeSO4⋅7H2O)处理酸性工业废水中的Cr2O2−76Fe2++Cr2O2−7+14H+=6Fe3++2Cr3++7H2O A.A B.B C.C D.D7.某学生按图示方法进行实验,观察到以下实验现象:①铜丝表面缓慢放出气泡,锥形瓶内气体呈红棕色;②铜丝表面气泡释放速度逐渐加快,气体颜色逐渐变深;③一段时间后气体颜色逐渐变浅,至几乎无色;④锥形瓶中液面下降,长颈漏斗中液面上升,最终铜丝与液面脱离接触,反应停止。
2024年山东省高考生物真题试卷含答案

2024年新课标高考山东卷生物一、单选题1.植物细胞被感染后产生的环核苷酸结合并打开细胞膜上的Ca2+通道蛋白,使细胞内Ca2+浓度升高,调控相关基因表达,导致H2O2含量升高进而对细胞造成伤害;细胞膜上的受体激酶BAK1被油菜素内酯活化后关闭上述Ca2+通道蛋白。
下列说法正确的是( )A.环核苷酸与Ca2+均可结合Ca2+通道蛋白B.维持细胞Ca2+浓度的内低外高需消耗能量C.Ca2+作为信号分子直接抑制H2O2的分解D.油菜素内酯可使BAK1缺失的被感染细胞内H2O2含量降低2.心肌损伤诱导某种巨噬细胞吞噬、清除死亡的细胞,随后该巨噬细胞线粒体中NAD+浓度降低,生成NADH的速率减小,引起有机酸ITA的生成增加。
ITA可被细胞膜上的载体蛋白L转运到细胞外。
下列说法错误的是( )A.细胞呼吸为巨噬细胞吞噬死亡细胞的过程提供能量B.转运ITA时,载体蛋白L的构象会发生改变C.该巨噬细胞清除死亡细胞后,有氧呼吸产生CO2的速率增大D.被吞噬的死亡细胞可由巨噬细胞的溶酶体分解3.某植物的蛋白P由其前体加工修饰后形成,并通过胞吐被排出细胞。
在胞外酸性环境下,蛋白P被分生区细胞膜上的受体识别并结合,引起分生区细胞分裂。
病原菌侵染使胞外环境成为碱性,导致蛋白P空间结构改变,使其不被受体识别。
下列说法正确的是( )A.蛋白P前体通过囊泡从核糖体转移至内质网B.蛋白P被排出细胞的过程依赖细胞膜的流动性C.提取蛋白P过程中为保持其生物活性,所用缓冲体系应为碱性D.病原菌侵染使蛋白P不被受体识别,不能体现受体识别的专一性4.仙人掌的茎由内部薄壁细胞和进行光合作用的外层细胞等组成,内部薄壁细胞的细胞壁伸缩性更大。
水分充足时,内部薄壁细胞和外层细胞的渗透压保持相等;干旱环境下,内部薄壁细胞中单糖合成多糖的速率比外层细胞快。
下列说法错误的是( )A.细胞失水过程中,细胞液浓度增大B.干旱环境下,外层细胞的细胞液浓度比内部薄壁细胞的低C.失水比例相同的情况下,外层细胞更易发生质壁分离D.干旱环境下内部薄壁细胞合成多糖的速率更快,有利于外层细胞的光合作用5.制备荧光标记的DNA探针时,需要模板、引物、DNA聚合酶等。
2024年山东省高考物理真题试卷含答案

2024年高考山东卷物理一、单选题1.2024年是中国航天大年,神舟十八号、嫦娥六号等已陆续飞天,部分航天器装载了具有抗干扰性强的核电池。
已知9038Sr 衰变为9039Y 的半衰期约为29年;23894Pu 衰变为23492U 的半衰期约87年。
现用相同数目的9038Sr 和23894Pu 各做一块核电池,下列说法正确的是( )A .9038Sr 衰变为9039Y 时产生α粒子B .23894Pu 衰变为23492U 时产生β粒子C .50年后,剩余的9038Sr 数目大于23894Pu 的数目D .87年后,剩余的9038Sr 数目小于23894Pu 的数目2.如图所示,国产人形机器人“天工”能平稳通过斜坡。
若它可以在倾角不大于30°的斜坡上稳定地站立和行走,且最大静摩擦力等于滑动摩擦力,则它的脚和斜面间的动摩擦因数不能小于( )A .12B C D 3.如图所示,固定的光滑斜面上有一木板,其下端与斜面上A 点距离为L 。
木板由静止释放,若木板长度L ,通过A 点的时间间隔为1t ∆;若木板长度为2L ,通过A 点的时间间隔为2t ∆。
21:t t ∆∆为( )A .1):1)B .:1)C .1):1)++D .:1)4.检测球形滚珠直径是否合格的装置如图甲所示,将标准滚珠a 与待测滚珠b 、c 放置在两块平板玻璃之间,用单色平行光垂直照射平板玻璃,形成如图乙所示的干涉条纹。
若待测滚珠与标准滚珠的直径相等为合格,下列说法正确的是( )A .滚珠b 、c 均合格B .滚珠b 、c 均不合格C .滚珠b 合格,滚珠c 不合格D .滚珠b 不合格,滚珠c 合格5.“鹊桥二号”中继星环绕月球运行,其24小时椭圆轨道的半长轴为a 。
已知地球同步卫星的轨道半径为r ,则月球与地球质量之比可表示为( )A B C .33r a D .33a r6.一定质量理想气体经历如图所示的循环过程,a →b 过程是等压过程,b →c 过程中气体与外界无热量交换,c →a 过程是等温过程。
2024年湖北省高考化学真题试卷含答案

2024年高考湖北卷化学试题一、单选题1.劳动人民的发明创造是中华优秀传统文化的组成部分。
下列化学原理描述错误的是发明关键操作化学原理A 制墨松木在窑内焖烧发生不完全燃烧B 陶瓷黏土高温烧结形成新的化学键C 造纸草木灰水浸泡树皮促进纤维素溶解D火药硫黄、硝石和木炭混合,点燃发生氧化还原反应A .AB .BC .CD .D2.2024年5月8日,我国第三艘航空母舰福建舰顺利完成首次海试。
舰体表面需要采取有效的防锈措施,下列防锈措施中不形成表面钝化膜的是A .发蓝处理B .阳极氧化C .表面渗镀D .喷涂油漆3.关于物质的分离、提纯,下列说法错误的是A .蒸馏法分离22CH Cl 和4CCl B .过滤法分离苯酚和3NaHCO 溶液C .萃取和柱色谱法从青蒿中提取分离青蒿素D .重结晶法提纯含有少量食盐和泥沙的苯甲酸4.化学用语可以表达化学过程,下列化学用语表达错误的是A .用电子式表示2Cl 的形成:B .亚铜氨溶液除去合成氨原料气中的CO :()()2+2+33323Cu NH +CO+NH Cu NH CO ⎡⎤⎡⎤⎣⎦⎣⎦C .用电子云轮廓图示意p-p π键的形成:D .制备芳纶纤维凯芙拉:5.基本概念和理论是化学思维的基石。
下列叙述错误的是A .VSEPR 理论认为VSEPR 模型与分子的空间结构相同B .元素性质随着原子序数递增而呈周期性变化的规律称为元素周期律C .泡利原理认为一个原子轨道内最多只能容纳两个自旋相反的电子D .3sp 杂化轨道由1个s 轨道和3个p 轨道混杂而成6.鹰爪甲素(如图)可从治疗疟疾的有效药物鹰爪根中分离得到。
下列说法错误的是A .有5个手性碳B .在120℃条件下干燥样品C .同分异构体的结构中不可能含有苯环D .红外光谱中出现了-13000cm 以上的吸收峰7.过量2SO 与以下-10.1mol L ⋅的溶液反应,下列总反应方程式错误的是溶液现象化学方程式A2Na S产生淡黄色沉淀22233SO +2Na S 3S +2Na SO =↓B3FeCl 溶液由棕黄色变浅绿色3222242FeCl +SO +2H O 2FeCl +H SO +2HCl=C2CuCl 溶液褪色,产生白色沉淀22224SO +2CuCl +2H O 2CuCl +H SO +2HCl=↓D23Na CO (含酚酞)溶液由红色变无色2232232SO +Na CO +H O CO +2NaHSO =A .A B .B C .CD .D8.结构决定性质,性质决定用途。
2018年高考真题全国3卷化学(附答案解析)

绝密★启用前2018年普通高等学校招生统一考试化学试题卷一、单选题1.化学与生活密切相关。
下列说法错误的是A.泡沫灭火器可用于一般的起火,也适用于电器起火B.疫苗一般应冷藏存放,以避免蛋白质变性C.家庭装修时用水性漆替代传统的油性漆,有利于健康及环境D.电热水器用镁棒防止内胆腐蚀,原理是牺牲阳极的阴极保护法2.下列叙述正确的是A.24 g 镁与27 g铝中,含有相同的质子数B.同等质量的氧气和臭氧中,电子数相同C.1 mol重水与1 mol水中,中子数比为2∶1D.1 mol乙烷和1 mol乙烯中,化学键数相同3.苯乙烯是重要的化工原料。
下列有关苯乙烯的说法错误的是A.与液溴混合后加入铁粉可发生取代反应B.能使酸性高锰酸钾溶液褪色C.与氯化氢反应可以生成氯代苯乙烯D.在催化剂存在下可以制得聚苯乙烯4.下列实验操作不当的是A.用稀硫酸和锌粒制取H2时,加几滴CuSO4溶液以加快反应速率B.用标准HCl溶液滴定NaHCO3溶液来测定其浓度,选择酚酞为指示剂C.用铂丝蘸取某碱金属的盐溶液灼烧,火焰呈黄色,证明其中含有Na+D.常压蒸馏时,加入液体的体积不超过圆底烧瓶容积的三分之二5.一种可充电锂-空气电池如图所示。
当电池放电时,O2与Li+在多孔碳材料电极处生成Li2O2-x(x=0或1)。
下列说法正确的是()A .放电时,多孔碳材料电极为负极B .放电时,外电路电子由多孔碳材料电极流向锂电极C .充电时,电解质溶液中Li +向多孔碳材料区迁移D .充电时,电池总反应为Li 2O 2-x =2Li+(1—2x )O 2 6.用0.100 mol·L -1 AgNO 3滴定50.0 mL 0.0500 mol·L -1 Cl -溶液的滴定曲线如图所示。
下列有关描述错误的是( )A .根据曲线数据计算可知K sp (AgCl)的数量级为10-10B .曲线上各点的溶液满足关系式c(Ag +)·c(Cl -)=K sp (AgCl)C .相同实验条件下,若改为0.0400 mol·L -1 Cl -,反应终点c 移到aD .相同实验条件下,若改为0.0500 mol·L -1 Br -,反应终点c 向b 方向移动7.W 、X 、Y 、Z 均为短周期元素且原子序数依次增大,元素X 和Z 同族。
2024年新课标高考物理真题试卷含答案

2024年高考新课标卷物理真题一、单选题1.一质点做直线运动,下列描述其位移x或速度v随时间t变化的图像中,可能正确的是( )A.B.C.D.2.福建舰是我国自主设计建造的首艘弹射型航空母舰。
借助配重小车可以进行弹射测试,测试时配重小车被弹射器从甲板上水平弹出后,落到海面上。
调整弹射装置,使小车水平离开甲板时的动能变为调整前的4倍。
忽略空气阻力,则小车在海面上的落点与其离开甲板处的水平距离为调整前的( )A.0.25倍B.0.5倍C.2倍D.4倍3.天文学家发现,在太阳系外的一颗红矮星有两颗行星绕其运行,其中行星GJ1002c的轨道近似为圆,轨道半径约为日地距离的0.07倍,周期约为0.06年,则这颗红矮星的质量约为太阳质量的( )A.0.001倍B.0.1倍C.10倍D.1000倍4.三位科学家由于在发现和合成量子点方面的突出贡献,荣获了2023年诺贝尔化学奖。
不同尺寸的量子点会发出不同颜色的光。
现有两种量子点分别发出蓝光和红光,下列说法正确的是( )A.蓝光光子的能量大于红光光子的能量B.蓝光光子的动量小于红光光子的动量C.在玻璃中传播时,蓝光的速度大于红光的速度D.蓝光在玻璃中传播时的频率小于它在空气中传播时的频率5.如图,两根不可伸长的等长绝缘细绳的上端均系在天花板的O点上,下端分别系有均带正电荷的小球P、Q;小球处在某一方向水平向右的匀强电场中,平衡时两细绳与竖直方向的夹角大小相等。
则( )A.两绳中的张力大小一定相等B.P的质量一定大于Q的质量C.P的电荷量一定小于Q的电荷量D.P的电荷量一定大于Q的电荷量二、多选题=t时开始振动,振动图像如图所示,所形成的简谐横波沿x 6.位于坐标原点O的波源在0轴正方向传播。
平衡位置在 3.5mx=处的质点P开始振动时,波源恰好第2次处于波谷位置,则( )A.波的周期是0.1sB.波的振幅是0.2mC.波的传播速度是10m/sx=处的质点Q开始振动时,质点P处于波峰位置D.平衡位置在 4.5m7.电动汽车制动时可利用车轮转动将其动能转换成电能储存起来。
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2009年全国高考英语试题及答案-北京卷21. John plays basketball well, ___his favorite sport is badminton. A. so B. or C. yetD. for22. You may use the room as you like ___ you clean it up afterwards.A. so far as B. so long asC. in caseD. even if23. Scientists have many theories about how the universe ___ into being.A. came B. was comingC. had come D. would come24. For breakfast he only drinks juice from fresh fruit ___ on his own farm.A. grown B. being grownC. to be grownD. to grow25. One of the few things you ___ say about English people with certainty is that they talk a lot about the weather.A. need B. must C. should D. can26. –What do you think of teaching, Bob? –I find it fun and challenging. It is a job ___ you are doing something serious but interesting.A. where B. Which C. When D. that27. The way the guests ___ in the hotel influenced their evaluation of the service. A. treated B. were treatedC. would treatD. would be treated28. 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Progress so far very good and we are sure that the work will be finished on time. A. was B. had been C. has been D. will be9. The children loved their day trip, and they enjoyed the horse ride .A. most B. more C. less D. little10. All the dishes in this menu, otherwise stated, will serve two to three people. A. as B. if C. though D. unless11. I’m sure that your letter will get attention. They know you’re waiting for the reply. A. continued B. immediate C. careful D. general12. The CDs are on sale! Buy one and you get completely free. A. other B. others C. one D. ones13. Jenny nearly missed the flight doing too much shopping.A. as a result of B. on top of C. in front of D. in need of14. What I need is book that contains ABC of oil painting. A. a; 不填 B. the; 不填 C. the; an D. a ; the15. If you leave the club, you will not be back in . A. received B. admitted C. turned D. moved16. They use computers to keep the traffic smoothly. A. being run B. run C. to run D. running17. My friend showed me round the town, was very kind of him. A. which B. that C. where D. it18. It’s high time you had your hair cut ; it’s getting .A. too much long B. much too long C. long too muchD. too long much19. ——Do you mind my opening the window? It’s a bit hot in here. ——, as a matter of fact A. Go ahead B. Yes, my pleasure C. Yes, I do D. Come on20. I can’t leave. She told me that I stay here until she comes back. A. can B. must C. willD. may6 A7 D8 C9 A 10 D11 B 12 C 13 A 14 D 15 B 16 D 17 A 18 B 19C 20 B2009年普通高等学校招生全国统一考试(陕西卷)6.What____ pity that you couldn’t be there to receive____ prize! A.a;a B.the;a C.a;the D.the;the7.Dr Smith, together with his wife and daughters, ______visit Beijing this summer.A.is gong to B.are going to C.was going to D.were going to8.He invited me to a dance after the show____ Christmas Eve. A.at B.on C.in D.by 9.This is the first time we______ a film in the cinema together as a family. 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A.who B.whomever C.no matter who D.whoever18.Little _______ about her own safety, though she was in great danger herself. A.did Rose care B.Rose did care C.Rose does care D.does Rose care19.--Have you finished your first paper? --_______, Just half of it, how about you? A.Not at all B.Not likely C.Not a bit D.Not yet20.From their _____on the top of the TV Tower, visitors can have a better view of the city. A.stage B.position C.condition D.situation5.D6.D7.B8.A9.C 10.A11.D 12.C 13.D 14.A 15.C 16.A 17.C 18.B 19.C 20.A2009年普通高等学校招生全国统一考试21. ----It looks heavy. Can I give you a hand? ----_______. A. No, thanks B. Yes, my pleasure C. NO, never mind D. Yes, I do22. Let’s go to ______ cinema –that’ll take your mind off the problem for _____while. A. the; the B. the; a C. a; the D. a; a23. How much _______ she looked without her glasses! A. well B. good C. best D. better24. Could I speak to ______ is in charge of International Sales please? A. who B. what C. whoeverD. whatever25. 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