浙江省金华十校2022-2023学年高一下学期期末调研考试政治试卷答案
浙江省金华十校2022-2023学年高一下学期期末调研考试英语试题含解析
金华十校2022-2023学年第二学期期末调研考试高一英语试题卷(答案在最后)本试卷分为第【卷(选择题)和第Ⅱ喜(非选择题),共150分,考试时间120分钟。
请考生按规定用笔将所有试题的答案涂写在答题纸上。
第Ⅰ卷(选择题共95分)第一部分(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B.C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.Which place does the woman want to go?A.A bank.B.Wall Street.C.A shopping mall.2.What’s the weather like now?A.Cloudy.B.Sunny.C.Windy.3.What’s the probable relationship between the speakers?A.Doctor and patient.B.Mother and son.C.Teacher and student.4.Where might the speakers be?A.On a playground.B.In a party hall.C.At a swimming pool.5.What is the man doing?A.Cashing a check.B.Applying for a credit card.C.Paying the bill.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
2022-2023学年浙江省金华十校高一上学期期末生物试题
2022-2023学年浙江省金华十校高一上学期期末生物试题1.不良的生活习惯如过多地摄入咖啡、可乐会导致血液中Ca2+浓度偏低,从而引发青少年骨骼发育不良,易骨折等异常症状。
下列选项中是骨细胞重要成分的是()A.收缩蛋白B.磷酸钙C.血红蛋白D.胰岛素2.某同学的早餐食谱如下:稀饭、煮鸡蛋、肉包子和蔬菜。
其中糖原含量最高的是()A.稀饭B.煮鸡蛋C.肉包子D.蔬菜3.雄孔雀开屏的行为与性激素有关,性激素的化学本质是()A.蛋白质B.核酸C.糖类D.脂质4.组成核酸的化学元素是()A.C、H、O B.C、H、O、NC.C、H、O、N、P D.C、H、O、N、P、S5.为更好地理解真核细胞的结构,某同学用橡皮泥、纸张等制作了真核细胞的三维结构模型。
该模型属于()A.数学模型B.概念模型C.物理模型D.实物模型6.将红细胞和洋葱外表皮细胞同时置于清水中,红细胞被涨破,而洋葱外表皮细胞不被涨破。
原因是洋葱外表皮细胞具有()A.细胞壁B.细胞膜C.液泡D.细胞溶胶7.通常选用黑藻叶片作为观察叶绿体和细胞质流动的材料。
下列选项中不是选其为材的原因是()A.叶片小而薄B.分布范围广,取材容易C.叶肉细胞叶绿体大而清晰D.细胞质流动缓慢,不易受环境影响8.对某细胞进行研究,发现该细胞表现出细胞膜流动性降低,细胞质色素积累,细胞核体积增大,酶活性降低,线粒体数量减少等特点。
则该细胞最可能是()A.衰老的皮肤细胞B.胚胎干细胞C.海拉细胞D.受精卵9.用蛋白酶处理大肠杆菌核糖体,使蛋白质完全水解。
处理后其仍可催化某缩合反应。
由此推测核糖体中能催化该反应的物质的化学成分是()A.核苷酸B.DNA C.RNA D.蛋白质10.肠腔中葡萄糖的浓度远低于小肠上皮细胞中的葡萄糖浓度,但小肠上皮细胞仍能吸收葡萄糖。
由此推知,小肠上皮细胞吸收葡萄糖的方式是()A.易化扩散B.主动运输C.渗透D.胞吞11.所有细胞都具有相似的细胞结构,都具有C、H、O、N等元素,都以DNA为遗传物质。
2022-2023学年高一政治期末试卷及答案
2022-2023学年高一政治期末试卷及答案
试卷内容
本期末试卷为2022-2023学年高一政治科目的期末考试试卷。
试卷共包含多个部分,涵盖了政治学科的各个方面知识点。
试卷题
目将针对学生对政治学科的基本理解、分析能力以及综合运用能力
进行考查。
试卷中的问题将涉及政治学科的理论知识、历史事件和国家政
策等方面内容。
学生需要根据自己所学的知识,通过分析和推理,
准确回答试卷中的各个问题。
答案解析
答案解析是对试卷中各个问题的解答方法和答案的详细解析说明。
通过答案解析,学生可以了解到每个问题的解答思路和关键点,以及正确的答案。
答案解析将包括对答案的分析解释、相关理论知识的引用和推导,以帮助学生更好地理解政治学科的知识点和解题方法。
注意事项
1. 学生在进行试卷答题时,应认真审题,理清思路,准确回答
问题。
2. 在阅读答案解析时,可以参考自己的答案,与答案解析进行
比对,找出自己可能存在的错误和不足之处,以便加以改进和提高。
3. 对于有疑问或不理解的地方,可以向老师请教或与同学进行
讨论,加深对相关知识点的理解。
希望本次期末试卷及答案能够对高一政治学科的研究和复有所
帮助,祝您取得优异的成绩!
以上为2022-2023学年高一政治期末试卷及答案的简介和说明。
浙江省金华十校2023-2024学年高一上学期期末调研考试地理试卷(含答案)
浙江省金华十校2023-2024学年高一上学期期末调研考试地理试卷学校:___________姓名:___________班级:___________考号:___________一、单选题1.监测南极附近冰山移动和面积变化的主要地理信息技术是( )A.GISB.GNSSC.RSD.BDS2.对流层下部的逆温现象会导致污染物不易扩散。
下列对流层气温随高度变化图,有利于污染物扩散的是( )A. B.C. D.五彩湾位于新疆准噶尔盆地东南部,是独特的雅丹地貌。
该地岩层中发现距今 1.6亿年前的中国已知最原始的恐龙类化石。
读五彩湾景观图,完成下面小题。
3.形成五彩湾雅丹地貌的主要外力作用是( )A.冰川侵蚀B.风力侵蚀C.风力沉积D.流水侵蚀4.该恐龙化石所处的地质时期( )A.为重要成煤期B.蕨类植物开始出现C.形成大量铁矿D.喜马拉雅山脉形成2023年12月1日晚,北京看到了绚丽多彩的极光。
不同高度,极光的颜色不同,读下表完成下面小题。
A.光球层B.色球层C.电离层D.日冕层6.北京地区观测到的极光多为红色,主要原因是( )①纬度较低②红光不易被散射③纬度较高④红光不易被反射A.①②B.①④C.②③D.③④2023年12月14日晚,云南丽江天文观测站直播双子座流星雨。
晴好的天气,没有月亮的夜晚,满天繁星挂在墨蓝色的苍穹,凌晨2点左右,流星雨达到极值。
完成下面小题。
7.该日( )A.全国均能观测B.月球西升东落C.出现天文大潮D.观测仅下半夜8.和新疆比,丽江天文观测站( )A.空气污染少,大气洁净B.灯光污染少,天光暗弱C.晴天多,观测时间长D.纬度低,观测范围广读大西洋局部海域图,箭头代表洋流。
完成下面小题。
9.下列关于海水性质的判断,正确的是( )A.甲水温等于乙B.乙水温高于丙C.甲密度低于丁D.丙盐度低于丁10.与甲海域比,戊海域盐度低的原因是( )①气温更高②降水量大③径流量大④暖流流经A.①②B.②③C.②④D.③④读台湾岛土壤类型分布图,完成下面小题。
浙江省金华市十校2022-2023学年高三下学期4月联考4月高三模考生物答案
金华十校2023年4月高三模拟考试生物答案一、选择题(每题2分,共40分)1-5:BBCCD6-10:DCDAB11-15:BCBDB16-20:CDAAD二、非选择题21.(10分)(1)抗利尿激素下丘脑神经分泌细胞合成的激素,可经轴突运输到神经垂体储存(2)皮肤血管舒张,血流量增大传导、对流、辐射、蒸发肌肉(3)ATP细胞呼吸(4)受体神经(5)TRH和甲状腺激素的特异性受体22.(10分)(1)物种多样性和遗传多样性土著植物的减少导致鸟类的栖息地和食物减少(2)碳释放碳存储(3)平均生物量迁移性差,季节性变化小(4)挺水植物吸收水中的氮、磷等微量元素,并与水华竞争光照自我调节能力物种对当地环境的适应性,有无敌害及对其他物种形成敌害(5)影响群落演替的因素有群落外界环境的变化、生物的迁入和迁出、群落内部种群相互关系的发展变化以及人类活动(写出一点即可)。
23.(11分)(1)单位时间单位叶面积减少实验误差,提高实验数据的准确性取相应组别的人参植株为实验材料,测定对应条件下黑暗时的单位时间单位叶面积的CO2释放量(2)氧气、二氧化碳卡尔文CO2还原为糖(3)不是(4)红蓝混合光红光(R)和红蓝混合光(M)(5)不是ABC24.(15分)(1)逆转录引物是根据P24基因对应的cDNA的一段已知序列设计合成的(含有/加入了能与之特异性结合的引物)(2)防止质粒和目的基因的自身环化及质粒和目的基因的反向连接在引物中加入限制酶BamHI和XhoI的识别序列(3)不同重组质粒表达了卡那霉素抗性基因,但不一定表达了P24基因(合理即可)3物质A能诱导P24基因的表达(合理即可)(4)促使小鼠产生更多的(能分泌抗P24抗体的)B细胞仙台病毒或聚乙二醇或电刺激法能产生P24抗体(又能无限增殖)保证分离出来的细胞是一个而不是多个(5)①P24单克隆抗体②3条曲线,每条曲线6个点(2分)25.(14分)(1)遗传的染色体学说(2)将灰身果蝇和黑身果蝇分开培养(2分)(3)EeBb eeBb不能当甲基因型为Eebb,乙基因型为eeBb时,无论两对基因是否位于非同源染色体上,均可得到实验一结果(4)25%7/64(2分)(5)三体短刚毛雌果蝇长刚毛雄果蝇F2中短刚毛∶长刚毛=2∶1F2中短刚毛∶长刚毛=1∶1。
浙江省金华市十校2023-2024学年高一下学期6月期末调研考试数学试题含答案
金华十校2023-2024学年第二学期期末调研考试高一数学试题卷(答案在最后)本试卷分选择题和非选择题两部分.考试时间120分钟.试卷总分为150分.请考生按规定用笔将所有试题的答案涂、写在答题纸上.选择题部分(共58分)一、单选题:本题共8小题,每小题5分,共40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.已知集合{}|02A x x =<<,{}|13B x x =<<,则A B = ()A.{}|12x x << B.{}|03x x << C.{}|23<<x x D.{}3|1x x <<【答案】A 【解析】【分析】直接求交集即可.【详解】集合{}|02A x x =<<,{}|13B x x =<<,则{}|12A B x x ⋂=<<.故选:A.2.“π6θ=”是“1sin 2θ=”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件【答案】A 【解析】【分析】根据正弦函数的性质,结合充分条件、必要条件的判定方法,即可求解.【详解】由π6θ=,可得1sin 2θ=成立,即充分性成立;反正:若1sin 2θ=,可得π2π6k θ=+或5π2π,6k k Z θ=+∈,即必要性不成立,所以π6θ=是1sin 2θ=的充分不必要条件.故选:A.3.数据2,3,3,4,4,5,5,5,5,6的中位数为()A.3.5B.4C.4.5D.5【解析】【分析】根据中位数的求解方法可得【详解】这组数据是按从小到大的顺序排列的,且共有10个数据,又最中间两个数的平均数为454.52+=,该组数据的中位数为4.5故选:C 4.复数13i1iz -=+,则z =()A.5B.C. D.32【答案】B 【解析】【分析】根据复数的运算化简得出复数,再结合复数的模长公式计算即可.【详解】因为()()()()2213i 1i 13i 1i 3i 3i 24i12i 1i 1i 1i 1i 2z -----+--=====--++--,所以z ==故选:B.5.已知,OA a OB b == ,点P 关于点A 的对称点为M ,点M 关于点B 的对称点为Q ,则PQ =uu u r()A.a b+ B.22a b + C.b a - D.22b a- 【答案】D 【解析】【分析】根据向量加、减法的法则可得【详解】因为点P 关于点A 的对称点为M ,点M 关于点B 的对称点为Q ,所以22,22OP OM OA a OQ OM OB b +==+==,两式相减可得所以PQ =uu u r OQ OP -= 22b a - ,故选:D6.某圆锥的底面半径为6,其内切球半径为3,则该圆锥的侧面积为()A.20πB.30πC.60πD.90π【答案】C【分析】根据已知条件首先求出圆锥的母线长,再利用公式求侧面积即可.【详解】如图所示,设球O 与圆锥底面相切于点N ,与母线BS 相切于点M ,根据已知得6,3BN OM ==,设母线长BS l =,则在直角△SBN 中SN ==因为SNB SMO △∽△,所以OS BSOM BN=即36336l =,化简得24600l l --=,解得10l =,或6l =-(舍去),所以圆锥的侧面积为:ππ610=60πBN l ⋅⋅=⨯⨯.故选:C.7.若函数()()22e e 4e e 2xx x x f x b --=+-++(b 是常数)有且只有一个零点,则b 的值为()A.2B.3C.4D.5【答案】B 【解析】【分析】由已知条件可判断()f x 为偶函数,函数图象关于y 轴对称,由函数有且只有一个零点,()f x 过坐标原点即可求解.【详解】函数的定义域为R ,因为()()()22ee 4e e 2xx x x f x b f x ---=+-++=,所以函数()f x 为偶函数,函数图象关于y 轴对称,因为函数有且只有一个零点,所以函数()f x 过坐标原点,()024220f b =-⨯+=,解得3b =.故选:B .8.已知ABC 三个内角A ,B ,C 的对边分别是a ,b ,c ,且满足222224a b c ++=,则ABC 面积的最大值为()A.8B.4C.2D.【答案】B 【解析】【分析】根据题意,由余弦定理以及三角形的面积公式可得2222342162ABCb c a S ⎛⎫=-+ ⎪⎝⎭,再利用两次基本不等式得到2162ABC S ≤ ,从而得解.【详解】因为222224a b c ++=,则222122b c a +=-,24a <,即2222322b c a a +-=-,由余弦定理可得232cos 22bc A a =-,又2sin 4ABC bc A S = ,所以2222234cos 22b c A a ⎛⎫=- ⎪⎝⎭①,22224sin 16ABC b c A S = ②,①+②可得22222342162ABCb c a S ⎛⎫=-+ ⎪⎝⎭ ,又()22222221422b c b ca ⎛⎫≤+=- ⎪⎝⎭,即2222231216222ABC a S a ⎛⎫⎛⎫-+≤- ⎪⎪⎝⎭⎝⎭ ,则()22222221316222222ABCSa a a a ⎛⎫⎛⎫≤---=- ⎪ ⎪⎝⎭⎝⎭ 2222222a a ⎛⎫+-≤= ⎪⎝⎭,即2162ABC S ≤ ,即0ABC ABC S S ⎛+-≤ ⎝,解得04ABC S <≤=,当且仅当22222b c a a⎧=⎨=-⎩时,即21a =,2234b c ==时,等号成立,所以ABC 面积的最大值为24.故选:B.【点睛】关键点点睛:本题解决的关键是,利用余弦定理与三角形的面积公式得到2222342162ABCb c a S ⎛⎫=-+ ⎪⎝⎭ ,从而结合基本不等式即可得解.二、多选题:本题共3小题,每小题6分,共18分.在每小题给出的选项中,有多项符合题目要求.全部选对的得6分,有选错的得0分,部分选对的得部分分.9.对于事件A 和事件B ,()0.4P A =,()0.5P B =,则下列说法正确的是()A.若A 与B 互斥,则()0.4=P ABB.若A 与B 互斥,则()0.9P A B ⋃=C.若A B ⊂,则()0.1P AB =D.若A 与B 相互独立,则()0.2P AB =【答案】BD 【解析】【分析】由互斥事件的定义,代入计算即可判断AB ,由A B ⊂,则AB A =,即可判断C ,由相互独立事件的定义,即可判断D【详解】因为()0.4P A =,()0.5P B =,若A 与B 互斥,则()0P AB =,()()()0.9P A B P A P B ⋃=+=,故A 错误,B 正确;若A B ⊂,则AB A =,所以()()0.4P AB P A ==,故C 错误;若A 与B 相互独立,则()()()0.40.50.2P AB P A P B ==⨯=,故D 正确;故选:BD10.已知,O A 与,B C 分别是异面直线a 与b 上的不同点,E ,F ,G ,H 分别是线段OA ,OB ,BC ,CA 上的点.以下命题正确的是()A.直线OB 与直线AC 可以相交,不可以平行B.直线EH 与直线BC 可以异面,不可以平行C.直线EG 与直线FH 可以垂直,可以相交D.直线EF 与直线GH 可以异面,可以相交【答案】BCD 【解析】【分析】A 可假设直线OB 与直线AC 相交,推出矛盾;B 先根据特殊位置得到两直线异面,再假设两直线平行,推出矛盾;C 根据特殊位置可以得到两直线垂直和相交;D 由特殊位置得到两直线可能异面,可能相交,也可以平行.【详解】A 选项,若直线OB 与直线AC 相交,则,,,O B A C 四点共面,则直线a 与b 共面,与题目条件直线a 与b 异面矛盾,故直线OB 与直线AC 不可以相交,A 错误;B 选项,当,E H 分别和,O A 重合时,直线EH 与直线BC 异面,直线EH 与直线BC 不可以平行,假如直线EH 与直线BC 平行,EH ⊂平面OAH ,BC ⊄平面OAH ,故//BC 平面OAH ,但BC 与平面OAH 有交点C ,显然这是不可能的,假设不成立,B 正确;C 选项,当,E F 均与O 重合,此时直线EG 与直线FH 相交,当调整,E G 的位置,可能有EG ⊥OA ,且令,F H 分别与,O A 重合,此时满足直线EG 与直线FH 垂直,故直线EG 与直线FH 可以垂直,可以相交,C 正确;D 选项,当,E H 均与A 重合,或,GF 均与B 重合时,直线EF 与直线GH 相交,当OE OF OA OB =时,EF 与AB 平行,当CG CHCB CA=时,GH 与AB 平行,此时EF 与GH 平行,其他情况,直线EF 与直线GH 异面,故直线EF 与直线GH 可以异面,可以相交,D 正确.故选:BCD11.小明在研究物理中某种粒子点(),P x y 的运动轨迹,想找到y 与x 的函数关系,从而解决物理问题,但百思不得其解,经过继续深入研究,他发现y 和x 都与某个变量()t t ∈R 有关联,且有sin 1cos x t ty t =-⎧⎨=-⎩.小明以此为依据去判断函数()y f x =的性质,得到了一些结论,有些正确的结论帮助小明顺利的解决了物理问题,同时也让小明深深感受到学好数学对物理学习帮助很大!我们来看看,小明的以下结论正确的是()A.函数()y f x =的图象关于原点对称B.函数()y f x =是以2π为周期的函数C.函数()y f x =的图象存在多条对称轴D.函数()y f x =在10,2⎛⎫⎪⎝⎭上单调递增【答案】BCD 【解析】【分析】根据y 的取值情况判断A 选项,根据正弦余弦函数周期性判断B 选项,根据圆的特性判断C 选项,应用复合函数单调性判断D 选项.【详解】对于A :由题意知1cos 0y t =-≥,故()f x 不可能关于原点对称,A 选项错误;对于B:sin ,cos y x y x ==周期为2π,则()y f x =是以2π为周期的函数,B 选项正确;对于C :当π,Z t k k =∈时,πsin ππ,Z x k k k k =-=∈,此时1cos y t =-有多条对称轴,C 选项正确;对于D:sin ,x t t =-设()()()sin ,1cos 0,h t t t h t t h t =-=-≥'单调递增,()11cos ,0,2g t t t ⎛⎫=-∈ ⎪⎝⎭单调递增,根据复合函数的单调性可得()y f x =在10,2⎛⎫⎪⎝⎭单调递增,D 选项正确.故选:BCD.【点睛】方法点睛:根据对称中心及对称轴定义判对称性即可.非选择题部分(共92分)三、填空题:本题共3小题,每小题5分,共15分.12.已知函数()()22log 1,22,2x x f x x x x ⎧+>=⎨+≤⎩,则()()1ff =_____________.【答案】2【解析】【分析】根据定义域代入相应的解析式可得答案.【详解】因为()()22log 1,22,2x x f x x x x ⎧+>=⎨+≤⎩,所以()211213f =+⨯=,()()()()2213log 31log42f f f ==+==.故答案为:2.13.甲船在B 岛的正南方向A 处,10AB =千米,甲船向正北方向航行,同时乙船自B 岛出发向北偏东60 的方向航行,两船航行速度相同,则甲、乙两船的最近距离为_____________千米.【答案】【解析】【分析】根据已知条件用余弦定理将甲、乙两船的距离表示出来,再求最小值即可求解.【详解】如图所示,设甲船航行到点C ,同时乙船航行到点D ,由已知得10AB =,120ABD ∠=︒,设BD AC x ==,则10BC x =-,在△BCD 中,由余弦定理得2222cos120CD BC BD BC BD =+-⋅⋅︒,代入得222221(10)2(10)(10100(5)752CD x x x x x x x =-+---=-+=-+,所以当5x =时,CD =千米.故答案为:.14.在ABC 中,3AB =,6AC =,60BAC ∠= ,D 在边BC 上,延长AD 到E ,使15AE =.若32EA tEB t EC ⎛⎫=+- ⎪⎝⎭,则BD =_____________.【答案】4【解析】【分析】建系标点,设()π15cos ,15sin ,0,3E θθθ⎡⎤∈⎢⎥⎣⎦,根据向量的坐标运算解得3cos 5θ=,进而可得4tan 3θ=,结合图形即可得结果.【详解】如图,建立平面直角坐标系,则()()(0,0,3,0,3,33A B C ,可知AB BC ⊥,设()π15cos ,15sin ,0,3E θθθ⎡⎤∈⎢⎥⎣⎦,可得()()()15cos ,15sin ,315cos ,15sin ,315cos ,3315sin EA EB EC θθθθθθ=--=--=--,因为32EA tEB t EC ⎛⎫=+- ⎪⎝⎭,则()()3315cos 315cos 15cos 2t t θθθ⎛⎫-+--=-⎪⎝⎭,解得3cos 5θ=,且π0,3θ⎡⎤∈⎢⎥⎣⎦,可得4sin 5θ==,sin 4tan cos 3θθθ==,所以tan 4BD AB θ=⋅=.故答案为:4.【点睛】关键点点睛:建系,根据15AE =可设()π15cos ,15sin ,0,3E θθθ⎡⎤∈⎢⎥⎣⎦,进而结合题意运算.四、解答题:本题共5小题,共77分.解答应写出文字说明、证明过程或演算步骤15.已知21,e e 是夹角为60的两个单位向量,()12122,2a e e b e e λλ=-=-∈R .(1)若,a b可以作为一组基底,求实数λ的取值范围;(2)若,a b垂直,求实数λ的值;(3)求b的最小值.【答案】(1)()(),44,-∞⋃+∞(2)0λ=(3【解析】【分析】(1)根据向量不平行,21,e e 的系数比值不相等可解;(2)根据0a b ⋅=,结合数量积运算性质即可得解;(3)将向量模转化为数量积,根据二次函数性质可得.【小问1详解】因为,a b 可以作为一组基底,所以,a b不平行,又21,e e 不共线,所以212λ≠--,即4λ≠,所以,实数λ的取值范围为()(),44,∞∞-⋃+.【小问2详解】因为,a b 垂直,所以()()1212220a b e e e e λ⋅=-⋅-=,即()2211222420e e e e λλ-+⋅+= ,又22121211,11cos 602e e e e ==⋅=⨯⨯︒= ,所以()124202λλ-++=,解得0λ=.【小问3详解】因为()()22222221211222442413be e e e e e λλλλλλ=-=-⋅+=-+=-+ ,所以,当1λ=时,2b 取得最小值3,所以b.16.已知函数()cos f x x x =+.(1)求函数()f x 的值域和其图象的对称中心;(2)在ABC 中,三个内角A ,B ,C 的对边分别是a ,b ,c ,满足()f A =2a =,b =,求ABC 的面积S 的值.【答案】(1)值域为[]22-,,ππ,06k k ⎛⎫-+∈ ⎪⎝⎭Z ,.(2【解析】【分析】(1)利用辅助角公式化简,根据正弦函数性质可得值域,利用整体代入法求解可得对称中心;(2)根据()f A =A ,利用余弦定理求出c ,然后由面积公式可得.【小问1详解】()πcos 2sin6f x x x x ⎛⎫=+=+ ⎪⎝⎭,所以值域为[]22-,,令ππ6x k k +=∈Z ,,得ππ,6x k k =-+∈Z ,所以()f x 的对称中心坐标为ππ,06k k ⎛⎫-+∈ ⎪⎝⎭Z ,.【小问2详解】由()π2sin 6f A A ⎛⎫=+= ⎪⎝⎭得πsin 62A ⎛⎫+= ⎪⎝⎭,0πA << ,ππ7π666A ∴<+<,所以ππ63A +=或2π3,即π6A =或π2A =,2a b =<=,π6A ∴=,由余弦定理得2π4122cos 6c =+-⨯,即2680c c -+=,解得2c =或4.当2c =时,11222S =⨯⨯=;当4c =时,11422S =⨯⨯=故所求ABC 的面积S 17.在五一假期中,某校组织全校学生开展了社会实践活动,抽样调查了其中的100名学生,统计他们参加社会实践活动的时间(单位:小时),并将统计数据绘制成如图的频率分布直方图.另外,根据参加社会实践活动的时间从长到短按4:4:2的比例分别被评为优秀、良好、合格.(1)求a 的值并估计该学校学生在这个五一假期中参加社会实践活动的时间的平均数(同一组中的数据用该组区间的中点值作为代表);(2)试估计至少参加多少小时的社会实践活动,方可被评为优秀.(结果保留两位小数).(3)根据社会实践活动的成绩,按分层抽样的方式抽取5名学生.从这5名学生中,任选3人,求这3名学生成绩各不相同的概率.【答案】(1)0.07a =,20.32小时(2)21.73小时(3)25【解析】【分析】(1)利用频率之和为1得到方程,求出a ,利用平均数的定义进行计算;(2)即求60百分位数,先得到60百分位数位于18~22之间,设出60百分位数为y ,从而得到方程,求出答案;(3)按照分层抽样的概念得到优秀,良好,及格的人数,并列举出求解相应的概率.【小问1详解】由()0.020.060.0750.02541a ++++⨯=,解得0.07a =,因为()0.02120.06160.075200.07240.02528420.32⨯+⨯+⨯+⨯+⨯⨯=小时,所以该学校学生假期中参加社会实践活动的时间的平均数约为20.32小时.【小问2详解】时间从长到短按4:4:2的比例分别被评为优秀、良好、合格,由题意知,即求60百分位数,又()0.020.0640.32+⨯=,()0.020.060.07540.62++⨯=,所以60百分位数位于18~22之间,设60百分位数为y ,则180.60.3222180.3y --=-,解得561821.7315y =+≈小时.故至少参加21.73小时的社会实践活动,方可被评为优秀.【小问3详解】易知,5名学生中,优秀有452442⨯=++人,设为,A B ,良好有452442⨯=++人,设为,C D ,合格有251442⨯=++人,设为E .任选3人,总共有()()()()()(),,,,,,,,,,,,,,,,,,A B C A B D A B E A C D A C E A D E ()()()(),,,,,,,,,,,B C D B C E B D E C D E ,10种情况,其中符合的有()()()(),,,,,,,,,,,A C E A D E B C E B D E ,共4种,故概率为42105p ==.18.在四棱台1111ABCD A B C D -中,BC AD ∥,平面11ABB A ⊥平面ABCD ,2AD =,CD =,1111AB BC AA A D ====,1120A AB ∠= .(1)求证:1//A B 平面11CDD C ;(2)求直线1AA 与直线CD 所成角的余弦值;(3)若Q 是1DD 的中点,求平面QAC 与平面ABCD 的夹角的余弦值.【答案】(1)证明见解析(2)24(3)75555.【解析】【分析】(1)根据平行直线的传递性可得11A B CD ∥,然后根据线面平行的判定可得(2)方法一,取AD 中点E ,连1D E ,CE ,1BD ,则11AA D E ,BE CD ,所以1BED ∠就是直线1AA 与CD 所成的角,然后在直角三角形中求出余弦即可,方法二,如图,以A 为坐标原点,AB 所在直线为x轴,AD 所在直线为y 轴,建立空间直角坐标系,然后求出平面的法向量,利用公式1cos cos AA CD θ=,求出即可(3)利用二面角的定义找出QMH ∠就是二面角Q AC D --的平面角,求出平面QAC 的法向量()m x y z = ,,和平面ABCD 的法向量()001n = ,,,利用cos cos ,n m θ= 求解即可.【小问1详解】连接1CD ,111BC A D == ,11BC AD A D ∥∥,11A BCD ∴是平行四边形,11AB CD ∴∥.又1⊄A B 面11CDD C ,1CD ⊂面11CDD C ,故1//A B 平面11CDD C 【小问2详解】法一:取AD 中点E ,连1D E ,CE ,1BD ,则11AA D E ,BE CD ,所以1BED ∠就是直线1AA 与CD 所成的角.在梯形ABCD 中,由已知可得AB AD ⊥,又平面11ABB A ⊥平面ABCD ,AB 是交线,AD ∴⊥平面11ABB A ,BC ∴⊥平面1CED ,1BC CD ∴⊥,12BD ∴=,1cos 4BED ∠∴==-,所以,直线1AA 与直线CD所成角的余弦值为4.法二:在梯形ABCD 中,由已知可得AB AD ⊥,平面11ABB A ⊥平面ABCD ,AB 是交线,AD ∴⊥面11ABB A ,如图,以A 为坐标原点,AB 所在直线为x 轴,AD 所在直线为y 轴,建立空间直角坐标系.则()000A ,,,()100B ,,,()110C ,,,()020D ,,,11022AA ⎛⎫=- ⎪ ⎪⎝⎭ ,,,()110CD =-,,1cos cos 4AA CD θ∴==,.【小问3详解】法一:过1D 作CE 延长线的垂线于O ,连接OD ,取OD 中点H ,连接QH ,过H 作HM AC ⊥,连接QM .易证QH ⊥面ABCD ,则QMH ∠就是二面角Q AC D --的平面角.11324QH OD ==,728MH =,所以1108MQ =,故cos 55MH QMH MQ ∠==.法二:()11010A D BC == ,,,11122D ⎛⎫∴- ⎪ ⎪⎝⎭,,,13424Q ⎛⎫∴- ⎪ ⎪⎝⎭,,设()m x y z = ,,是平面QAC的法向量,则0130424x y x y z +=⎧⎪⎨-++=⎪⎩,,令x =,得)m =-,又()001n =,,是平面ABCD 的法向量,所以cos cos ,55n m θ===.19.假设()G x 是定义在一个区间I 上的连续函数,且(){|}G x x I I ∈⊂.对0x I ∀∈,记()()1100x G x G x ==,()()()()22100x G x G G x G x ===,…,()()()100n n n x G G x G x -== .若某一个函数()G x 满足()()()21000n n n Gx pG x qG x ++=+,则有n n n x s t αβ=+(其中α,β为关于x 的方程2x px q =+的两个根,s ,t 是可以由0x ,1x 来确定的常数).(1)若02x =,13x =且满足()()()212222n n n G G G ++=-+.(ⅰ)求2x ,3x 的值;(ⅱ)求n x 的表达式;(2)若函数()G x 的定义域为A ,值域为B ,且()0,A B ∞==+,且函数()G x 满足()()()216n n n G x G x G x ++=-+,求()G x 的解析式.【答案】(1)(ⅰ)21x =,35x =;(ⅱ)()71233n n x =-⋅-(2)()2G x x =【解析】【分析】(1)(ⅰ)由题意知212n n n x x x ++=-+,利用递推关系即可求解;(ⅱ)由题意知n nn x s t αβ=⋅+⋅,又α,β为22x x =-+的两个根可得()2nn x s t =+-,从而可得()01223x s t x s t =+=⎧⎨=+⨯-=⎩,求解即可;(2)由题意得()32nnn x s t =⋅-+⋅,又由值域为()0,B ∞=+可得0s =,从而可得0x t =,再由()10022x G x t x ===即可求解.【小问1详解】(ⅰ)由题意知212n n n x x x ++=-+,又02x =,13x =,所以2102341x x x =-+=-+=,32121235x x x =-+=-+⨯=.(ⅱ)由题意知,nnn x s t αβ=⋅+⋅,又α,β为22x x =-+的两个根1,2-,()2n n x s t ∴=+-.又()01223x s t x s t =+=⎧⎨=+⨯-=⎩,所以7313s t ⎧=⎪⎪⎨⎪=-⎪⎩,()71233n n x ∴=-⋅-.【小问2详解】由题意知,α,β为关于x 的方程26x x =-+的两个根,所以3,2αβ=-=,则()32nnn x s t =⋅-+⋅,因为值域为()0,B ∞=+,易知0s =;2n n x t ∴=⋅,则002x t t =⋅=,()10022x G x t x ∴===,()2G x x ∴=.。
浙江省金华十校2022-2023学年高二上学期1月期末模拟考试生物试题(word版)
浙江省金华十校2022-2023学年高二上学期1月期末模拟考试生物试题(word版)一、单选题(★) 1. 下列物质中,属于单糖的是()A.核糖B.糖原C.蔗糖D.麦芽糖(★★) 2. 下列不属于内分泌腺的是()A.垂体B.睾丸C.汗腺D.甲状腺(★★★) 3. 用单侧光照射引起植物幼苗向光弯曲生长,制片观察的结果如图所示。
该结果可以说明A.苗尖端是弯曲部位B.苗尖端是感光部位C.背光面生长素较多D.背光面细胞伸长较快(★★★) 4. 下列关于真核细胞中转录的叙述,正确的是()A.tRNA、rRNA和mRNA都从DNA转录而来B.转录时RNA聚合酶的结合位点在RNA上C.细胞中的RNA合成过程不会在细胞核外发生D.一个基因转录时两条DNA链可同时作为模板(★★) 5. 下列关于细胞分化、衰老和凋亡的叙述,正确的是()A.衰老细胞的酶活性都下降B.精细胞是一种高度分化的细胞C.植物体内通气组织的形成与细胞凋亡无关D.肺炎双球菌的S型菌和R型菌的形成是细胞分化的结果(★★★) 6. 下图是洋葱根尖的细胞分裂照片,①〜⑤表示细胞周期的不同时期。
下列相关叙述错误的是()A.图中细胞分散开来是盐酸解离后的效果B.⑤时期的核糖体上可能正在合成DNA聚合酶C.①时期细胞内的DNA与染色体数量之比大于1D.细胞周期中各时期的顺序是⑤→④→②→①→③(★★★) 7. 利用无色洋葱内表皮、均加入适量红墨水的蔗糖溶液和清水,开展“观察质壁分离及质壁分离复原”活动。
下列关于该过程的叙述,正确的是()A.制片过程:取载玻片→撕表皮→滴清水→盖盖玻片B.细胞中液泡颜色变化:浅→深→浅C.细胞吸水能力变化:大→小→大D.视野中红色区域变化:小→大→小(★★★) 8. 某二倍体动物(2n=8)从初级精母细胞到精细胞的过程中,不同时期细胞中染色体组数依次发生的变化是:2组(甲)→1组(乙)→2组(丙)→1组(丁)。
下列叙述中,正确的是()A.甲时期有的细胞刚开始染色体复制B.甲、乙时期的细胞中均含有姐妹染色单体C.丙→丁过程中可发生非同源染色体自由组合D.丁时期一个细胞产生的子细胞有4种不同的染色体组合类型(★★★) 9. 下图为人体感染某病毒后的免疫过程,下列相关分析错误..的是A.初次感染后体内免疫细胞的种类和数量都增加B.初次感染后淋巴细胞的部分子细胞分化为记忆细胞,并进入静止期C.再次感染后病症较轻,是因为记忆细胞被激活,产生了更强的特异性免疫反应D.再次感染该病毒后,只需体液免疫的参与即可痊愈(★★★) 10. T 2噬菌体侵染细菌的部分实验如下图所示。
2023届浙江省金华十校高三11月模拟考试政治试题
2023届浙江省金华十校高三11月模拟考试政治试题一、单项选择题:下列各题的四个选项中,只有一项是最符合题意的。
请在答题卡上填涂你认为正确的选项。
(本题共33小题,每小题2分,共66分)1.“三面云山一面城,半城秋色半城湖”,这座曾被马可?波罗称为“世界上最美丽华贵之天城”的城市,将迎来2016年_____ 。
A.中非媒体领袖峰会B.二十国集团峰会C.亚太经合组织会议D.上海合作组织峰会2.2015年12月1日,国际货币基金组织(IMF)执董会决定将人民币纳入_____ 货币篮子,为此,世界货币扩大至美元、欧元、人民币、日元、英镑5种货币。
2016年10月1日正式生效。
A.外汇储备B.美元浮动汇率C.普通提款权D.特别提款权3. 2015年10月9日,联合国教科文组织公布了2015年“世界记忆名录”的项目名单。
中国申报的_____ 档案入选。
A.土司遗址B.南京大屠杀C.日军强征慰安妇D.丝绸之路4.2015年度诺贝尔生理学或医学奖10月5日在瑞典斯德哥尔摩揭晓,来自中国的女药学家屠呦呦获奖,以表彰她发现了_____ 这种治疗疟疾的药物。
A.春雷霉素B.青霉素C.青蒿素D.克林霉素6.2015年5月10日,我国烟草税率由5%上涨至11%,香烟零售价由此出现0.5元至3元的小幅上涨。
不过,令人尴尬的是,因调价而选择戒烟的烟民微乎其微。
这说明A.价格对供求关系不起决定性作用B.戒烟需要烟民树立正确消费观C.税收是调节经济运行的重要杠杆D.供求受价格影响更由价值决定7.2015年上半年,我国非公经济的工业增加值增长速度是8.1%,比规模以上工业平均增速高了1.8个百分点。
民间投资占全部投资比重达到了65.1%。
由此可见①我国现阶段的所有制结构已得到了根本性转变②我国民营经济在市场经济中的活力在不断增强③各种所有制经济在市场经济中实现了平等竞争④非公有制经济是我国经济社会发展的重要基础A.①③B.①④C.②③D.②④8.“70后”猪蹄、“80后”鸡翅……比年轻人年纪还大的走私“僵尸肉”,有的来自疫区,有的严重过期,用化学药剂加工调味后摇身一变成为“卖相”极佳的“美味佳肴”。
浙江省金华十校2022-2023学年高三模拟考试生物试题(含答案解析)
浙江省金华十校2022-2023学年高三模拟考试生物试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.2,4-D是一种生长素类似物,使用前通常需探究其促进插枝生根的最适浓度。
下列叙述错误的是()A.可以用水培法或土培法B.实验不需设置清水处理的空白对照组C.实验所用的插条长度与芽的数量应保持一致D.可设一组2,4-D浓度梯度较大的实验作为预实验2.下图为巨噬细胞吞噬细菌过程的亚显微照片。
下列叙述错误的是()A.图示过程体现了质膜的流动性B.细菌被巨噬细胞的内质网分解C.细胞核通过选择性表达基因调控图示过程D.巨噬细胞伸出伪足是细胞骨架变化的结果3.科学家在以大肠杆菌为材,用同位素示踪技术探究DNA的复制过程中,首先进行了“将大肠杆菌放入以15NH4Cl为唯一氮源的培养液中培养若干代”这一操作。
该操作的目的是()A.使大肠杆菌拟核DNA被同位素标记B.使大肠杆菌质粒DNA被同位素标记C.使大肠杆菌所有的DNA都被同位素标记D.使大肠杆菌的DNA被释放4.间充质干细胞(MSC)是一种多能干细胞,下图表示MSC自我更新和形成不同组织细胞的过程示意图。
下列叙述正确的是()A.MSC体积需达到一定值时才能启动a过程B.b过程说明MSC具有全能性C.成骨细胞、成软骨细胞、脂肪细胞的染色体组成不同D.若MSC出现核体积增大、染色加深等特征,可判断发生了癌变5.小明患细菌性肠炎,导致严重腹泻,全身无力。
医生处方中有“口服补液盐散(Ⅱ)”,其成分是:氯化钠1.75g,氯化钾0.75g,枸缘酸钠1.45g(酸碱缓冲剂),无水葡萄糖10g。
下列叙述错误的是()A.药物中的葡萄糖不能为淋巴管内细胞提供能量B.药物中的氯化钠有利于维持渗透压平衡C.药物中的枸缘酸钠有利于维持酸碱平衡D.尿液中的枸缘酸盐不属于内环境成分6.某小组观察了洋葱外表皮细胞在3%KNO3溶液中的质壁分离现象,并每隔1min拍摄记录,经计算S2/S1的平均值(S1以细胞壁为边界,S2以细胞膜为边界),结果如下表所示。
浙江省金华十校2022-2023学年高二下学期期末调研考试地理试题含解析
金华十校2022—2023学年第二学期期末调研考试高二地理试题卷(答案在最后)一、选择题I(本题共有20小题,每小题2分,共40分。
每小题都只有一个正确选项,不选、多选、错选均不得分。
)读世界某地植物景观图,完成下面小题。
1.图示植物景观的名称是()A.茎花B.气根C.板状根D.附生植物2.该植物景观最可能出现在()A.热带沙漠气候区B.热带雨林气候区C.热带草原气候区D.地中海气候区【答案】1.A 2.B【解析】【1题详解】茎花现象,又称“老茎生花现象”,是指花和花序(包括花谢后形成的果实)直接在乔木树干上形成,花和果以花环状围绕乔木的树干的现象,主要分布在热带雨林植被中,强调热带雨林植被“茎干开花”图示符合,A 对;气根,通常指暴露于空气中的根;尤指一种生长在附生植物和与土壤不接触的攀缘植物上的根,但通常有将植物固定于支持物上并常常有光合作用的功能。
气根位于热带雨林雨量多、气温高、空气湿热,气根有呼吸功能,并能吸收空气里的水分,强调热带雨林、热带季雨林植被“根部吸氧”,B错;板根亦称“板状根”,热带雨林植物支柱根的一种形式。
植物一般是把根系扎进土壤,执行吸收水分、养分、供应地上部分茎干、枝叶生长的功能,也起着承受地上部分重力的支撑作用,C错;附生植物是一种不在地面生长,而是在树木的树枝和树干上生长的植物。
它们用根把自己固定在其他树木的树皮上,将稠密的根枝缠在上面,D错;故选A。
【2题详解】综上分析可知,茎花景观出现在热带雨林气候区,B对;热带沙漠气候区无高大植被,A错;热带草原气候区高大植被较少,如猴面包树,但没有茎花现象,C错;地中海气候区以亚热带常绿硬叶林为主,D错;故选B。
【点睛】热带雨林气候---热带雨林带;热带草原气候---热带草原带;热带沙漠气候---热带荒漠带;热带季风气候---热带季雨林带;亚热带季风气候---亚热带常绿阔叶林带;温带季风气候,温带海洋性气候---温带落叶阔叶林带;地中海气候---亚热带常绿硬叶林带;温带大陆性气候---亚寒带针叶林带,温带荒漠带;极地苔原气候---苔原带;极地冰原气候---冰原带;高山高原气候---高山植物区。
浙江省金华市十校2022-2023学年高二下学期期末调研考试政治试卷(含答案)
②当事人张某应当委托诉讼代理人帮助自己进行诉讼
③市林业局作为行政相对人,需要承担相应举证责任
④张某需向法院提交起诉状,林业局可不提交答辩状
A.①③B.①④C.②③D.②④
26、甲骑电动车回家,路上被乙养的狗扑倒受伤,花去医疗费数千元。事后,乙拒绝甲的索赔要求,并表示:“我家狗扑的是车,不是你!再说了,就算有责任,那也是狗的责任,和我有什么关系?”从逻辑思维基本要求的角度来看,乙的观点( )
D.若损害他人信息权益,无论有无过错均应承担侵权责任
25、张某贩卖无合法来源的野生动物被A市林业局执法人员查获。A市林业局以张某未办理野生动物经营许可证为由,决定对张某给予罚款处罚。张某不服,遂向人民法院提起诉讼,请求撤销该行政处罚决定。在该诉讼中( )
①本案的核心问题是A市林业局的行政行为是否合法
A.共变法B.求同法C.求异法D.求同求异并用法
19、在中国的二十四节气中,有小暑也有大暑,有小寒也有大寒,但是只有小满,却没大满。有人认为小满代表了一种人生态度,就是我们一直在追求完美的路上,但并不要求一定要十全十美,有时候大满、太满并非好事。这启示我们( )
A.注意质变的节点,防止不利的质变发生
①只有诈骗,才会给你宣传做兼职刷单返现
②只要没宣传做兼职刷单返现,就不是诈骗
③只要诈骗,就会给你宣传做兼职刷单返现
④只要给你宣传做兼职刷单返现,就是诈骗
A.①②B.①④C.②③D.③④
18、某餐厅发生食品中毒事件,警方根据调查发现,当天凡是吃过小炒黄牛肉的食客都出现了不同程度的中毒症状,而没有吃过小炒黄牛肉的食客则一切正常。据此,警方推断食品中毒的源头在小炒黄牛肉。警方运用的推理方法为( )
①美式民主的实质是“金钱政治”
浙江省金华市十校联考2022-2023学年高二下学期期末调研考试英语试卷(含答案)
浙江省金华市十校联考2022-2023学年高二下学期期末调研考试英语试卷学校:___________姓名:___________班级:___________考号:___________ 一、阅读理解Do you wish to cool off from the sun and escape to a secret underworld pools for freshwater wild swims? Here are some destinations where you can enjoy yourself to the fullest.Glen Etive, Glen Coe, HighlandsThis dramatic canyon (峡谷) is a perfect place for wild swimmers, with wonderful pink rocks and river pools and good access from a tiny road that winds all the way to the lake. On a summer day yellow and black butterflies fly low over the water. There are several hidden pools and cliffs (悬崖), which are great for jumping. There’s a great spot for wild camping above.Pinkery Pond, Challacombe, SomersetEscape the crowds by heading to Challacombe. On the side of a hidden canyon is Pinkery Pond. This is a superb lake, sheltered even on a windy day. On a lonely stretch of land, the beautiful lake is perfect for skinny dipping (浸渍), with only the wild rabbits and occasional deer to watch over you.Frensham Great Pond, Churt, SurreyFrensham has fine sandy beaches and is perfect for families; kids can swim in a safe area and there is a cafe with parking and facilities. It was built as a fishpond for the Bishop of Winchester’s visit to Farnham Castle in 1246, and afterwards was dried up every five years when wheat was grown for a season on its bed.Llyn Eiddew-bach, Talsarnau, GwyneddThis beautiful remote lake is set in the wild, empty lands of the northern Rhinogs in the Snowdonia National Park. There are cliffs for jumping and amazing views of the sea. Bryn Cader Faner, a Bronze Age stone circle, is half a mile away, and you can continue for a mile up the mine track to reach little Llyn Du at the top.1、Who is the text mainly intended for?A. Wild swimmers.B. Mountain climbers.C. Animal-lovers.D. Cliff-jumpers.2、Which destination best suits visitors with children?A. Glen Etive, Glen Coe, Highlands.B. Pinkery Pond, Challacombe, Somerset.C. Frensham Great Pond, Churt, Surrey.D. Llyn Eiddew-bach, Talsarnau, Gwynedd.3、Where can the text be found?A. In a travel magazine.B. In a fitness brochure.C. In an adventure guidebook.D. In a geography textbook.One in four children who are feeling sad or anxious hide mental health difficulties from their parents, research shows.BBC Children in Ned surveyed 2,502 young people aged 11 to 18, whose replies suggested that one in three regularly felt anxious or worried about their future. One in four said that they regularly felt the need to hide negative feelings, while one in three said they did not feel comfortable asking for help about feelings and emotions. One in four said they had not talked to someone they trusted about their mental health in the past six months.Researchers also surveyed 2,500 parents, with half saying that there was insufficient support available for children struggling with’ mental health. One in six said they were not confident in recognizing signs of poor mental health in their child. Simon Antrobus, president of BBC Children in Need, said, “Some feelings of anxiety can be hidden, so empathizing (共情) with them and letting them know that you understand why they feel the way they do can make a real difference to a child’s health and can help prevent mental health problems from becoming serious.”Meanwhile a survey of 3,014 adults by the mental health charity, Mind, suggested that the rising expenses of living is making people stressed. Half of participants said that their mental health was being negatively affected by the financial impact of the expenses of living- Sarah Hughes, Mind chief executive, said, “The uncertainty of watching as our costs rise can be difficult to bear and having so much to deal with can affect our mental health. Despite this, looking after our mental health is often last on our list.”4、What can be learned from the survey on young people in paragraph 2?A. Most of them have anxiety about their future.B. One in four found it difficult to trust their parents.C. One third felt the need to ask for help with their problems.D. A quarter of them regularly felt it necessary to hide negative feelings.5、What does Antrobus suggest parents do?A. Place children’s needs first.B. Recognize their own struggles.C. Show understanding to children.D. Study the reasons for children’s problems.6、What can be inferred from the last paragraph?A. We are supposed to cut down our living expenses.B. Mental health has been attached much attention to.C. Almost every adult has experienced financial difficulties.D. There is a link between high living costs and mental health.7、What’s the author’s purpose in writing the passage?A. To introduce a mental health charity.B. To discuss the causes of negative feelings.C. To encourage studies on children’s mental health.D. To present research findings of mental health issues.Ontario proposed issuing a license(许可证) that allows residents to loosen dogs in an enclosed area to teach them how to hunt live animals such as foxes and rabbits recently. Hunters say there is a growing demand for the dog sport, which is often referred to as training, while animal advocates call it a cruel practice for catching animals alive.Graydon Smith, the Natural Resources and Forestry Minister, said the government wants to allow more of the hunting facilities to prevent the sport from moving underground. “If there aren’t enough facilities, dog owners may do this on other private land or public land. In that case, there could be unwanted interactions with both people and wildlife.”Christine Hogarth, who is in charge of animal welfare in the province, appealed for the Safety of all animals in the training. “There should be bush piles or man-made escape units, where food is placed so the rabbits learn where to hide.” Christine Hogarth said, “And make sure there are not many dogs going to go in a 10-inch tunnel when there’s an alligator (鳄鱼) at the other end.”the government to issue the license last year, giving reasons why it was a necessity. The dog sport also has competitions. Judges stand throughout the enclosures to score how well dogs are tracking and hunting down rabbits. The dog training proposal also has the support of the Ontario Federation of Anglers and Hunters. But Camille Labchuk, director of advocacy group Animal Justice, argued the entire practice is very cruel. “They do some of these contests where dogs chase terrified rabbits around an enclosed area, and they also train the dogs to kill the rabbits so that they can later use those dogs for hunting.” she said.8、What’s the purpose of the proposal?A. To free dogs from chains.B. To encourage dog sport.C. To enrich residents’ lives.D. To limit dog ownership.9、What does Christine say about the dog training?A. Alligators can be used to train dogs.B. Food must be placed to attract the dogs.C. Safety measures should be taken to protect animals.D. Dogs should not be allowed to go through a narrow tunnel.10、What does the underlined word “lobbied” in paragraph 4 mean?A. Warned.B. Persuaded.C. Promised.D. Forced.11、Which word best describes Labchuk’s attitude toward the proposal?A. Favorable.B. Opposed.C. Objective.D. Unclear.Have you ever found that you were able to sleep better with an air conditioner or fan running or perhaps with the sound of rain falling outside? If so, then you’re already familiar with white noise.White noise refers to a noise that has a mixture of all the audible (听得见的) frequencies that the human ear can detect. It is a combination of all the frequencies of sound played at once. It can cover the sounds of other noises because of its various frequencies, leading many people to experience its calming effects.Studies have that listening to white noise positively found affects sleep. For example, people living in a high-noise area of New York City fell asleep faster and spent more of their time in bed asleep while listening to white noise. In another study, listening to white noise through headphones improved sleep quality for seriously ill patients in a loud hospital room. However, more research is needed to confirm whether the characteristics of white noise itself improve sleep or whether the sound primarily helps by covering background noise.However, a recent analysis of multiple studies looking at white noise’s effect on sleep has produced mixed results. The researchers are doubtful about the quality of existing evidence and conclude that further research is necessary in order to widely recommend white noise as a sleep aid. They also note that in some instances, white noise can disturb a person’s sleep and may affect their hearing.Despite that, researchers are still optimistic that the steady hum of white noise might reduce a sleeper’s sensitivity to unpredictable noises from the environment, such as transportation sounds like cars and planes, which are considered a major contributor to poor sleep.12、Why does white noise have calming effects?A. It can absorb other noises.B. It can help people sleep better.C. It can be detected by human ears.D. It can cover the sounds of other noises.13、How does the author explain the benefits of white noise?A. By giving examples.B. By telling stories.C. By asking questions.D. By making comparisons.14、Which statement may researchers agree with according to the last two paragraphs?A. White noise should be strongly recommended as a sleep aid.B. Harmful effects of white noise have become a major concern.C. Poor sleep will make people sensitive to the unpredictable noises.D. More researches are needed to confirm the effect of white noise on sleep.15、Which of the following can be a suitable tile for the text?A. How Does White Noise Work?B. Is White Noise Harmful in Any Way?C. Does White Noise Help You Sleep?D. What Are the Benefits of White Noise?二、七选五16、If someone offered you a marshmallow (棉花糖) now, but promised you two marshmallows if you waited for 15 minutes, what would you do? There’s always the chance you don’t like marshmallows. ①_______ Would you prefer to snack on one right away, or remain patient enough to double your treat?The Stanford Marshmallow Experiment, conducted over 20 years ago, presented this choice to a group of children between the ages of 3 a nd 6. At first, the experiment didn’t gain much attention. But about10 years later, the researchers followed up with the participants and discovered something interesting. Some of the kids who had chosen to wait for 15 minutes were doing better on tests. ②_______While some scientists believe there is no connection, others believe patience made the difference. ③_______ That extra patience helped students in other parts of their lives too, like studying and learning. Further experiments involving different snacks have yielded similar resultsIf, when you first started reading this, you thought you would rather eat your snack right away, that’s OK. ④_______ Experts emphasize that patience is a skill that can be developed and strengthened. Dr. Parker Huston, a psychologist, suggests individuals can cultivatepatience by identifying the sources of frustration in their lives and preparing for those moments. When faced with frustrating situations, you can take deep breaths and count backwards from ten to one⑤_______ Regardless of whether you choose to eat the marshmallow immediately or wait the key is to maintain an open mind and learn to practice patience. No matter where your future takes you, patience can help you get there.A. But let’s say you love them.B. Let’s return to the marshmallow.C. It doesn’t suggest you are meant to succeed.D. Does patience help you plan ahead for your future?E. The students who waited for the extra treat were more patient.F. The good news is that we can all learn how to be more patient.G. Could there be a connection between waiting and future success?三、完形填空(15空)A 71-year-old Swedish man “can’t put into words”how thankful he is for the new technology that saved him from sudden cardiac arrest (心脏骤停).to save a patient’s life.EMADE drones (无人机) swiftly delivered an automated external defibrillator (AED), acarrying an AED!”of the ambulance.probably wouldn’t be here.”17、A. change B. conflict C. incident D. campaign18、A. doorway B. backyard C. house D. driveway19、A. quickly B. gradually C. exactly D. usually20、A. seek B. offer C. stop D. refuse21、A. influential B. immediate C. impressive D. inspiring22、A. energy-efficient B. life-saving C. cost-effective D. family-centered23、A. hospital B. ambulance C. scene D. room24、A. storage B. purchase C. delivery D. return25、A. On purpose B. By chance C. Without delay D. In fact26、A. rested B. waved C. struggled D. collapsed27、A. learning B. performing C. explaining D. teaching28、A. noticed B. imagined C. remembered D. missed29、A. rushed B. called C. guided D. dragged30、A. stable B. realistic C. popular D. useful31、A. report B. inquiry C. recovery D. preparation四、短文填空32、Typically, midnight screenings (放映) of new movies are popular among young audiences, creating a lively carnival-like atmosphere. However, the recent midnight gathering of fans ①______ their 30s or 40s for The First Sloam Dunk has caused ②______ interesting and unconventional phenomenon ③______ is being hotly discussed among movie fans this week.④______ (base)on Japanese popular Slam Dunk manga (漫画), the animated movie The First Slam Dunk began ⑤______ (it) screening across the country’s IMAX cinemas on April 20 at midnight, ⑥______ (bring)a strong sense of nostalgia(怀旧) to Chinese fans born in the 1980s and 90s. “The manga carries a positive message about holding on to what you love and never giving up, which ⑦______ (encourage) many people since its publication.” said Zhang,a fan of the manga.30 years ago, the original manga ⑧______ (introduce) in Chinese mainland. And now, the story continues. The beloved ⑨______ (character)from Shohoku High School reunite inthe new movie to compete against Japan’s strongest high school basketball team in the ⑩______ (tough) game of their lives.Earning 9. 2 points out of 10 on Douban, the movie has earned around 170 million yuan ($24.7 million) to top the country’s box office charts by Friday.五、书面表达33、某国际学校将举行”中学生艺术作品展”。
2023年1月浙江省普通高中学业水平考试政治试题(答案)
2023年1月浙江省学业考试
政治参考答案
一、判断题(本大题共5小题,每小题1分,共5分)
1.F 2.F 3.T 4.F 5.T
二、选择题Ⅰ(本大题共10小题,每小题2分,共20分)
6.C 7.C 8.A 9.B 10.D 11.C 12.A 13.D 14.A 15.B
三、选择题Ⅱ(本大题共15小题,每小题3分,共45分)
16.A 17.D 18.D 19.B 20.C 21.C 22.B 23.A 24.B 25.D 26.C 27.B 28.A 29.A 30.C
四、综合题(本大题共2小题,共30分)
31.(1)浙江继续发力高新技术、装备制造等产业培育体系,建设创新引领、协同发展的产业体系,推动实体经济发展,夯实共同富裕的物质基础;助力山区县发展特色产业,支持山区加快发展,推进区域协调发展,缩小区域差距;迭代升级“千万工程”,推动乡村经济发展和农民增收,促进乡村振兴,缩小城乡差距。
(2)中国共产党领导是中国特色社会主义最本质的特征,是中国特色社会主义制度的最大优势。
办好中国的事情,关键在党。
坚持党的领导,为共同富裕示范区建设提供强大动力和可靠保障;在推进共同富裕示范区建设中,进一步明确方向、统一思想。
(3)略。
32.(1)源远流长.
(2)略
(3)中国特色社会主义文化源自于中华优秀传统文化,中华文明探源工程,揭示中华文明起源,证实中华文明历史悠久,有利于坚守中华文化立场,弘扬中华优秀传统文化,增强历史自觉,树立高度的文化自觉和文化担当。
浙江省金华十校2022-2023学年高二下学期期末调研考试技术试题含解析
金华十校2022—2023学年第二学期期末调研考试高二技术试题卷(答案在最后)考生须知:本试题卷分两部分,第一部分信息技术,第二部分通用技术。
全卷共12页,第一部分1至6页,第二部分7至12页。
满分100分,考试时间90分钟。
1.答题前,务必书自己的姓名、准考证号用黑色字迹的签字笔或钢笔填写在答题纸上。
2.选择题的答案须用2B铅笔将答题纸上对应题目的答案标号涂黑,如要改动,须将原填涂处用橡皮擦净。
3.非选择题的答案须用黑色字迹的签字笔或钢笔写在答题纸上相应区域内,作图时可先使用2B铅笔,确定后须用黑色字迹的签字笔或钢笔描黑,答案写在本试题卷上无效。
第一部分信息技术(共50分)一、选择题(本大题共12小题,每小题2分,共24分。
在每小题给出的四个选项中,只有一个符合题目要求)1.下列有关数据与信息的说法,正确的是()A.数据就是数字,是对客观事物的符号表示B.信息是数据经过储存、分析及解释后所产生的意义C.信息具有载体依附性,同一信息只能依附于同一种载体D.信息的加工和处理必须使用计算机才能完成【答案】B【解析】【详解】本题考查的是数据与信息相关知识。
数据可以是数字、文字等,故选项A说法错误;信息是数据经过储存、分析及解释后所产生的意义,选项B说法正确;同一信息可以依附于不同的载体,故选项C说法错误;简单的信息处理和加工也可以使用手工,故选项D说法错误。
本题应选B。
2.下列有关人工智能的说法,正确的是()A.人工智能以机器为载体,模仿、延伸和扩展了人类智能B.符号主义中智能行为就是对符号的推理和运算,所有内容都可用符号描述C.扫地机器人通过“交互—反馈”的学习机制来提升智能行为,属于联结主义人工智能D.围棋人工智能软件AlphaGo能从大量的人类选手棋局数据中利用深度学习技术掌握超高的棋力,属于行为主义人工智能【答案】A【解析】【详解】本题主要考查人工智能技术的描述。
人工智能以机器为载体,模仿、延伸和扩展了人类智能;符号主义中智能行为就是对符号的推理和运算,但并非所有内容都可用符号描述;扫地机器人通过“交互—反馈”的学习机制来提升智能行为,属于行为主义人工智能;围棋人工智能软件AlphaGo能从大量的人类选手棋局数据中利用深度学习技术掌握超高的棋力,属于联结主义人工智能,故本题选A选项。
浙江省金华十校2022-2023学年高一下学期期末调研考试英语试题
浙江省金华十校2022-2023学年高一下学期期末调研考试英语试题学校:___________姓名:___________班级:___________考号:___________一、阅读理解Philip Guston NowMarch 2 - August 27, 2023East Building, Concourse, National Gallery of Art, Washington DCPhilip Guston Now records the 50-year career of one of America’s most powerful modern artists through more than 150 paintings and drawings. Famous in his time and in ours, Guston’s work continues to remind, attract, and arouse, raising important questions about the relationship of art to beauty and cruelty, freedom and doubt, politics and the imagination.OrganizationThe exhibition is organized by the National Gallery of Art, Washington; the Museum of Fine Arts, Boston; Tate Modern, London; and the Museum of Fine Arts, Houston.Other venues(会场)Museum of Fine Arts, Boston, May 1 - September 11, 2022Museum of Fine Arts, Houston, October 23, 2022 - January 15, 2023Tate Modern, London, October 5, 2023 - February 25, 2024Exhibition SupportMajor support for the international tour of the exhibition is provided by the TerraFoundation for American Art. The Director’s Circle of the National Gallery of Art and the Edwin L. Cox Exhibition Fund provided additional funding. The exhibition is supported by an indemnity(保障)from the Federal Council on the Arts and the Humanities.PassesSign up at the exhibition entrance. Sometimes, you may have to join a virtual line upon arrival. While waiting, you can explore other parts of the museum. Groups are limited to six people.1.What kind of works could you see in Guston’s exhibition?A.Photography works.B.Drawings.C.Calligraphy works.D.Carvings.2.Where should you go if you want to visit Guston’s exhibition on December 15, 2023?A.Tate Modern, London.B.Museum of Fine Arts, Boston.C.Museum of Fine Arts, Houston.D.National Gallery of Art, Washington DC.3.What is a must for the visitors to enter the exhibition?A.Waiting in a virtual line.B.Joining a visiting group.C.Applying online before arrival.D.Registering at the exhibition entrance.LONDON -Britain made meteorological (气象学的) history on Tuesday when temperatures in some places topped 40℃ for the first time ever recorded in the United Kingdom.It was a day of hot milestones(里程碑) in Britain, where in the morning the temperature was 39.1℃, the highest level ever recorded in the United Kingdom. That record was broken about two hours later, when Britain’s national weather service said the temperature at Heathrow Airport hit 40.2’℃. If confirmed, it would be the first time that the temperature in Britain had gone beyond 40’℃. However, by the afternoon, the temperature hit40.3. The extreme weather brought great sufferings to the local people.The hot, dry conditions also put great burden on emergency services. Fires spread in some areas of Britain and even other European countries. In France and Spain, firefighters have been battling wildfires that have burned forest and bush and in some places, forced people to leave. On Tuesday, more than 2,000 firefighters were facing off against a big fire in the southwest Britain that has forced 37,000 people to leave their homes this week.In Britain, the government advised people to work from home, but for schools, to stay open - a request that some areas had ignored, sending students home.Trains are particularly affected by high heat because the infrastructure (基础建设)-rails and overhead wires -is not built to deal with extremely hot temperatures. Network Rail, which operates the country’s rail system, issued a “do not travel” warning for trains in some areas. Several train companies said they planned to cancel all service running north from the capital. The London Underground, most of which does not have air conditioning.has also stopped some of its service.4.What was the recent problem with the United Kingdom?A.It suffered a lot from high heat.B.Its emergency services broke down.C.It didn’t have experienced firefighters.D.Its people were forced to leave their country.5.What was the British government’s suggestion for its people?A.Don’t go travelling.B.Send students home.C.Choose homeworking.D.Go to schools for shelter.6.Why couldn’t trains run normally in Britain recently?A.They were out of date.B.Some companies canceled all the train service.C.The whole country’s railway system was in poor condition.D.The railway infrastructure is not built to run on extremely hot days.7.Which of the following is a suitable title for the text?A.A Look into British Train SystemB.The U.K. Reaches a Record HighC.The Hottest Weather Is the Most HarmfulD.The Battle over Hot Summer in the WorldYears ago, as a business reporter, I interviewed an advertising manager. I was there to ask about the latest campaign. But when I sat down, he wanted to talk about writing novels.He spent hours meeting with clients(客户), but he dreamed of being a novelist instead. I remember thinking: Sure, everybody dreams to be a novelist. Who doesn’t?A decade later, however, I was surprised to see the same person on TV, holding up his new book. James Patterson had developed into a best-selling author. He has since published more than 100 New York Times best sellers.“I never thought of myself as an advertising person,” he told me when I asked how he’d done it. “I always planned to be a writer.” Mr. Patterson’s ability to sec himself as a writer shows a term(术语) “possible selves.” It describes how people envision their futures: what they may become, or want to become, etc.The term, created in 1986 by the social psychologists Hazel Markus and Paula Nurius,grew out of research on self-concept and self-perception(自我知觉).While self-concepts, like “I am a kind person” or “I am a good parent”, are based on the present, the researchers found that people are also influenced by possible selves -what they might become in the future and how they might change.These possible selves,both positive and negative,are closely related to motivation (动机).In a small study, when young adults were made to envision themselves as either regular exercisers (hoped-for selves) or inactive (feared selves),both groups exercised more in the weeks afterward. But researchers have found that imagining positive possible selves can improve health and reduce depression by holding out the hope for a better future.A possible self can help you realize daydreams, which seem to be unrealistic, “if you build a bridge from your ‘now’ self to the possible self,” Dr. Markus said. But how do we build that bridge?8.What was the author’s attitude towards James Patterson’s dream at first?A.Doubtful.B.Curious.C.Worried.D.Disappointed. 9.What does the underlined word “envision” mean in the fourth paragraph?A.Face.B.Imagine.C.Make.D.Determine. 10.What can we learn about “possible self” from paragraphs 5 and 6?A.It is a necessity for a better future.B.It refers to a person’s present behaviors.C.Negative possible selves cannot inspire people.D.Imagining positive possible selves can promote one’s health.11.What will be talked about in the following paragraphs?A.How a possible self can be of help.B.How to connect “now” self and possible self.C.What could be done to change one’s possible self.D.What motivation is needed to have a positive self.Researchers in Australia and the US are starting a multi-million dollar project to bring the Tasmanian tiger, nicknamed thylacine(袋狼), back from extinction. The last known one died in 1939.The team say it can be recreated using stem cells(干细胞)and gene-editing(基因编辑)technology, and the first thylacine could be reintroduced to the wild in 10 years’ time. They plan to take stem cells from a living species with similar DNA, and then use gene-editing technology to ”bring back“ the extinct species - or an extremely close one of it.It would be a great achievement for the researchers attempting it, and require a number of scientific breakthroughs.The population of Tasmanian tigers dropped when humans arrived in Australia tens ofthousands of years ago, and again when dingoes - a species of wild dog - appeared.Eventually, the species only lived free on the island of Tasmania, and was finally hunted to extinction.If scientists were to succeed, it would mark the first “de-extinction“ event in history, but many outside experts doubt it, and believe that the project is more about media attention for the scientists and less about doing serious science.The idea of bringing back the extinct has been around for more than 20 years. In 1999, the Australian Museum started to pursue a project to clone the Tasmanian tiger, and various attempts have been made ever since to get or rebuild DNA from samples. The US firm made headlines last year with its plans to use similar gene editing technology to bring the woolly mammoth back to life - a technological achievement yet to be made.12.Which of the following might be the major reason for thylacine’s extinction?A.Habitat loss.B.Climate change.C.Human activities.D.Wild dog protection.13.What do many outside experts think of bringing back extinct thylacine?A.It will make history.B.It is particularly difficult.C.It deserves greater attention.D.It is more of a piece of eye-catching news.14.What does the last paragraph mainly talk about?A.Future for bringing back the extinct.B.Benefits of bringing back the extinct.C.Previous efforts to bring back the extinct.D.Technology needed to bring back the extinct.15.In which column of a magazine can we read this passage?A.Science and Technology.B.History and Traditions.C.Nature and Environment.D.Culture and Society.二、七选五Being creative means allowing yourself to relax and think outside of box. It is significant not only for artists, writers, musicians, etc., but also for business people, students, and many others. Yet sometimes we have problems being creative. A lack of creativity can be frustratingand can sometimes limit your ability to be excellent in your career or personal life. 16 Expose (使……接触) yourself to new ideas and information. In order to produce creative ideas, you will need a flow of new ideas. 17 For example, you may try reading lots of books, subscribing to a magazine on topics that interest you, or watching a documentary film on a topic you are unfamiliar with.18 You can do this both before you start working and during your work. Devoted “think-time” can help you, especially if you’re having trouble finding creative solutions to long-standing problems.Seek out new experiences. 19 Getting out of your comfort zone is an easy way to get a fresh viewpoint and go back to the problem or project you are working on with a renewed sense of energy. You may try taking a walk in an area you’ve never visited.Have imaginary conversations. Your own imagination can also be a great way of gaining new experiences. Pretend that you are talking to someone you find fascinating or a role model, such as a famous or influential person from history. 20 Cultivating your creativity takes time and effort, but can also be lots of fun.A.Spend time alone.B.Give yourself time to think.C.Avoid activities that don’t challenge you.D.But with some helpful tips you can develop your creativity.E.Close your eyes, and discuss with this person whatever topic comes to mind.F.Seeing the work of others might inspire you and give you ideas to explore further.G.Make time to talk to lots of different people and ask them questions about their ideas.三、完形填空I don’t usually keep houseplants. They get either overwatered or underwatered. But afternot the one who received it. 26 the plant, as small an act as it was, connected me to a main part of my old identity.Over the next few months, I recovered from my 27 and returned to work. And the plant had doubled in height and its leaves were 28 and healthy. Both the tree and I were thriving (旺盛). Then, 29 , whatever I did, the leaves kept browning and dropping. I grew more and more 30 .“If my lucky bamboo dies, I might die too.” I couldn’t shake the feeling that the plant had become a(n) 31 of my health until I realized I had 32 connected my good care for the plant with my own survival. When my cancer unavoidably 33 , I no longer thought it was any failure on my part. And as my anxiety 34 , I began to learn how to better care for my plant. I put it to a larger pot (花盆), giving it 35 to grow. Gradually,we both began to thrive again.21.A.doubted B.feared C.loved D.introduced 22.A.look after B.check out C.show off D.put away 23.A.emptiness B.belonging C.freedom D.achievement 24.A.proved B.limited C.tested D.strengthened 25.A.patience B.trust C.comfort D.care 26.A.Sharing B.Watering C.Observing D.Decorating 27.A.injury B.operation C.stress D.loss 28.A.shiny B.strange C.dusty D.colorful 29.A.normally B.consequently C.mysteriously D.undoubtedly 30.A.bored B.annoyed C.lonely D.anxious 31.A.example B.result C.gift D.symbol 32.A.slightly B.secretly C.wrongly D.hardly 33.A.returned B.changed C.disappeared D.started 34.A.increased B.lessened C.spread D.exploded 35.A.energy B.nutrition C.room D.time四、用单词的适当形式完成短文阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
浙江省金华十校2023-2024学年高一上学期期末调研考试数学试题含答案
金华十校2023—2024学年第一学期调研考试高一数学试题卷(答案在最后)本试卷分第Ⅰ卷和第Ⅱ卷两部分.考试时间120分钟.试卷总分为150分.请考生按规定用笔将所有试题的答案涂、写在答题纸上.选择题部分(共60分)一、选择题:本题共8小题,每小题5分,共40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.sin3π=()A.12B.12-C.32D.【答案】C 【解析】【分析】根据特殊角对应的三角函数值,可直接得出结果.【详解】sin 32π=.故选:C.2.已知集合{}1,2,3A =,{}2,,4B a =,若{}2A B ⋂=,则实数a 可以为()A.1 B.3C.4D.7【答案】D 【解析】【分析】由集合的交集运算及集合元素的互异性讨论可得解.【详解】由{}2,,4B a =,知4a ≠,C 不可能;由{}2A B ⋂=,知1a ≠且3a ≠,否则A B ⋂中有元素1或者3,矛盾,即AB 不可能;当7a =时,{}2A B ⋂=,符合题意,因此实数a 可以为7.故选:D3.若对于任意[]1,2x ∈,不等式220m x +-≤恒成立,则实数m 的取值范围是()A .1m ≤- B.0m ≤C.1m £D.m ≤【答案】A 【解析】【分析】根据给定条件,求出函数2()2f x m x =+-在[1,2]上的最大值即得.【详解】令函数2()2f x m x =+-,显然()f x 在[1,2]上单调递减,max ()(1)1f x f m ==+,因为任意[]1,2x ∈,不等式220m x +-≤恒成立,于是10m +≤,所以1m ≤-.故选:A4.哥哥和弟弟一起拎一重量为G 的重物(哥哥的手和弟弟的手放在一起),哥哥用力为1F ,弟弟用力为2F ,若12F F =,且12,F F 的夹角为120°时,保持平衡状态,则此时1F 与重物重力G 之间的夹角为()A.60°B.90°C.120°D.150°【答案】C 【解析】【分析】结合物理相关知识,利用三角形和向量夹角的知识即可解答.【详解】根据力的平衡,12,F F 的合力为CA,如图所示:由于12F F =,且12F F ,的夹角为120 ,则ACB 为等边三角形,则60ACB ∠= ,则1F 与重物重力G 之间的夹角为18060120-= .故选:C5.“44a -≤≤”是“函数()()22log 4f x x ax =-+的定义域为R ”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件【答案】B 【解析】【分析】根据函数()()22log 4f x x ax =-+的定义域为R 则240x ax -+>恒成立求解a 的取值范围判断即可.【详解】函数()()22log 4f x x ax =-+的定义域为R则240x ax -+>恒成立,即2440a -⨯<,解得44a -<<,故“44a -≤≤”是“函数()()22log 4f x x ax =-+的定义域为R ”的必要不充分条件.故选:B 6.已知函数()()216f x x a b x =-++,a ,b 是正实数.若存在唯一的实数x ,满足()0f x ≤,则223a b +的最小值为()A.46B.48C.52D.64【答案】B 【解析】【分析】根据函数()()216f x x a b x =-++,,a b 是正数,且存在唯一的实数x ,满足()0f x ≤,可得240b ac -=,利用()()()22222a bc d ac bd ++≥+,可得223a b +的最小值.【详解】根据函数()()216f x x a b x =-++,,a b 是正数,且存在唯一的实数x ,满足()0f x ≤,可得240b ac -=,即()264a b +=,由()()()()2222220a b c d ac bd ac bd ++-+=-≥,则()()()22222ab c d ac bd ++≥+,所以()()2221313a b a b ⎛++≥ ⎪⎝+⎫⎭,故22348a b +≥,故选:B7.某种废气需要经过严格的过滤程序,使污染物含量不超过20%后才能排放.过滤过程中废弃的污染物含量Q (单位:mg/L )与时间r (单位:h )之间的关系为0ektQ Q -=,其中0Q 是原有废气的污染物含量(单位:mg/L ),k 是正常数.若在前4h 消除了20%的污染物,那么要达到排放标准至少经过(答案取整数)()参考数据:ln0.2 1.609≈-,ln0.80.223≈-,40.80.4096=,60.80.26≈A.19h B.29h C.39h D.49h【答案】B 【解析】【分析】根据题意列出方程和不等式即可求解.【详解】由题有400(120%)kQ Q e --=,设t 小时后污染物含量不超过20%,则0020%ktQ eQ -≤,解得28.8t ≥,即至少经过29小时能达到排放标准.故选:B.8.若实数ππ,,44x y ⎛⎫∈- ⎪⎝⎭,满足2sin 2sin2x x x y y =+,则()A.2x y ≥B.2x y ≤C.2x y ≥ D.2x y≤【答案】C 【解析】【分析】构造函数()ππsin ,,22f x x x x ⎛⎫=∈-⎪⎝⎭,可得()f x 在π0,2⎡⎫⎪⎢⎣⎭上为增函数,且为偶函数,再根据()()02f x f y -≥结合偶函数性质判断即可.【详解】设()ππsin ,,22f x x x x ⎛⎫=∈-⎪⎝⎭,则()f x 为偶函数,设12π02x x <<<,则因为,sin y x y x ==在π0,2⎛⎫∈ ⎪⎝⎭上均为增函数,故120sin sin 1x x <<<,故()()11121222sin sin sin f x x x x x x x f x =<<=,故()f x 在π0,2⎡⎫⎪⎢⎣⎭上为增函数,且()f x 为偶函数.又2sin 2sin2x x xy y =+,则20sin 2sin 2x x y y x -≥=,即()()02f x f y -≥,当且仅当0x y ==时取等号.故()()2f x f y ≥,故2x y ≥.故选:C二、选择题:本题共4小题,每小题5分,共20分.在每小题给出的选项中,有多项符合题目要求.全部选对的得5分,有选错的得0分,部分选对的得2分.9.在ABC 中()A.若A B ≥,则cos cos A B ≤B.若A B ≥,则tan tan A B ≥C.()sin sin A B C +=D.sincos 22A B C+=【答案】ACD 【解析】【分析】对A ,根据余弦函数的单调性判断;对B ,举反例判断;对CD ,根据三角形内角和为π结合诱导公式判断.【详解】对A ,在ABC 中π0A B >≥>,由余弦函数单调性可得cos cos A B ≤,故A 正确;对B ,若A 为钝角,B 为锐角,则tan 0tan A B <<,故B 错误;对C ,()()sin sin πsin A B C C +=-=,故C 正确;对D ,πsinsin cos 2222A B C C +⎛⎫=-= ⎪⎝⎭,故D 正确.故选:ACD10.已知()f x x α=(R α∈)()A.当1α=-时,()f x 的值域为RB.当3α=时,()()π3f f >C.当12α=时,()2f x 是偶函数 D.当12α=时,()2f x 是奇函数【答案】BC 【解析】【分析】根据幂函数的性质即可求解AB ,结合函数奇偶性的定义即可判断CD.【详解】当1α=-时,()1f x x=,此时()f x 的值域为{}0y y ≠,故A 错误,当3α=时,()3f x x =在R 上单调递增,所以()()π3f f >,B 正确,当12α=时,R x ∀∈,()()()()222f x f x f x =-=,所以()2f x 是偶函数,C 正确,当12α=时,()12f x x =,()0x ≥,则()2f x x =,()0x ≥,定义域不关于原点对称,故为非奇非偶函数,D 错误,故选:BC11.已知函数()22cos 21f x x x ωω=-(0ω>)的最小正周期为π,则()A.2ω=B.函数()f x 在π0,6⎛⎫⎪⎝⎭上为增函数C.π,03⎛⎫-⎪⎝⎭是()f x 的一个对称中心D.函数π6f x ⎛⎫+ ⎪⎝⎭的图像关于y 轴对称【答案】BD 【解析】【分析】对A ,根据辅助角公式,结合最小正周期公式求解即可;对B ,根据πππ2,662x ⎛⎫+∈ ⎪⎝⎭判断即可;对C ,根据π23f ⎛⎫-=- ⎪⎝⎭判断即可;对D ,化简π6f x ⎛⎫+ ⎪⎝⎭判断即可.【详解】对A ,()π2cos 22sin 26f x x x x ωωω⎛⎫=+=+ ⎪⎝⎭,又()f x 最小正周期为π,故2ππ2ω=,则1ω=,故A 错误;对B ,()π2sin 26f x x ⎛⎫=+ ⎪⎝⎭,当π0,6x ⎛⎫∈ ⎪⎝⎭时,πππ2,662x ⎛⎫+∈ ⎪⎝⎭,为正弦函数的单调递增区间,故B 正确;对C ,ππ2sin 2032f ⎛⎫⎛⎫-=-=-≠ ⎪ ⎪⎝⎭⎝⎭,故π,03⎛⎫- ⎪⎝⎭不是()f x 的一个对称中心,故C 错误;对D ,πππ2sin 22cos 2666f x x x ⎡⎤⎛⎫⎛⎫+=++= ⎪ ⎪⎢⎥⎝⎭⎝⎭⎣⎦为偶函数,图像关于y 轴对称,故D 正确.故选:BD12.已知函数()()()11cos π22121x x x f x -⎡⎤⎛⎫- ⎪⎢⎥⎝⎭⎣⎦=++,则()A.函数()f x 是周期函数B.函数()f x 有最大值和最小值C.函数()f x 有对称轴D.对于11,2x ⎡⎤∈-⎢⎥⎣⎦,函数()f x 单调递增【答案】BC 【解析】【分析】利用函数对称性的定义可判断C 选项;判断函数()f x 在13,22⎡⎤⎢⎥⎣⎦上的单调性,结合函数最值的定义可判断B 选项;利用特殊值法可判断D 选项;利用反证法结合B 选项中的结论可判断A 选项.【详解】因为()()()()()11πcos πsin π221212121x x x x x x f x --⎛⎫- ⎪⎝⎭==++++,对于C 选项,因为()()()()()()()1111sin π1sin π121212121xx x xx xf x f x -----⎡⎤⎣⎦-===++++,所以,函数()f x 的图象关于直线12x =对称,C 对;对于D 选项,因为()10f -=,()00f =,故函数()f x 在11,2⎡⎤-⎢⎥⎣⎦上不单调,D 错;对于B 选项,因为函数()f x 的图象关于直线12x =对称,要求函数()f x 的最大值和最小值,只需求出函数()f x 在1,2⎡⎫+∞⎪⎢⎣⎭上的最大值和最小值即可,设()()()12121xx g x -=++,当112x ≤≤时,()()()122121322x x x x g x -=++=++,令2xt ⎤=∈⎦,因为函数2x t =在1,12⎡⎤⎢⎥⎣⎦上单调递增,函数23y tt =++在⎤⎦上单调递增,所以,函数()g x 在1,12⎡⎤⎢⎥⎣⎦上单调递增,当1x ≥时,()()()121321212212xx x x g x --=++=+⋅+,因为函数212x y -=、3212xy =⋅+在[)1,+∞上均为增函数,所以,函数()2132212x x g x -=+⋅+在[)1,+∞上为增函数,所以,函数()()()12121xx g x -=++在1,2⎡⎫+∞⎪⎢⎣⎭上为增函数,由对称性可知,函数()g x 在1,2⎛⎤-∞ ⎥⎝⎦上为减函数,故函数()g x 在12x =处取得最大值,且())2max 112g x g ⎛⎫==+ ⎪⎝⎭,故函数()1g x 在12x =处取得最小值,且最小值为())22111=+,当1322x ≤≤时,则π3ππ22x ≤≤,则函数()sin πh x x =在13,22⎡⎤⎢⎥⎣⎦上为减函数,对任意的1x 、213,22x ⎡⎤∈⎢⎥⎣⎦,且12x x <,则()()12h x h x >,()()210g x g x >>,则()()12110g x g x >>,由不等式的基本性质可得()()()()()()112122h x h x h x g x g x g x >>,即()()12f x f x >,所以,函数()f x 在13,22⎡⎤⎢⎥⎣⎦上单调递减,又因为当12x =时,函数()sin πh x x =取得最大值,故函数()f x 仅在12x =处取得最大值,对任意的3,2x ⎡⎫∈+∞⎪⎢⎣⎭,()32h x h ⎛⎫≥ ⎪⎝⎭,()1132g x g ≤⎛⎫ ⎪⎝⎭,若()0h x ≥,则()()32032h h x g x g ⎛⎫ ⎪⎝⎭≥>⎛⎫⎪⎝⎭,若()0h x <,则()32h x h ⎛⎫≥ ⎪⎝⎭,则()()03h x h <-≤-,则()()3232h h x g x g ⎛⎫ ⎪⎝⎭-≤-⎛⎫ ⎪⎝⎭,所以,()()3232h h x g x g ⎛⎫ ⎪⎝⎭≥⎛⎫⎪⎝⎭.综上所述,对任意的3,2x ⎡⎫∈+∞⎪⎢⎣⎭,()32f x f ⎛⎫≥⎪⎝⎭,又因为函数()f x 在13,22⎡⎤⎢⎥⎣⎦上单调递减,故当12x ≥时,()f x 在32x =处取得最小值,综上所述,函数()f x 既有最大值,也有最小值,C 对;对于A 选项,由C 选项可知,函数()f x 仅在12x =处取得最大值,若函数()f x 是以()0T T >为周期的周期函数,则1122f T f ⎛⎫⎛⎫+= ⎪ ⎪⎝⎭⎝⎭,与题意矛盾,故函数()f x 不可能是周期函数,A 错.故选:BC.【点睛】方法点睛:函数单调性的判定方法与策略:(1)定义法:一般步骤:设元→作差→变形→判断符号→得出结论;(2)图象法:如果函数()f x 是以图象的形式给出或者函数()f x 的图象易作出,结合图象可得出函数的单调区间;(3)导数法:先求出函数的导数,利用导数值的正负确定函数的单调区间;(4)复合函数法:先将函数()y f g x ⎡⎤=⎣⎦分解为内层函数()u g x =和外层函数()y f u =,再讨论这两个函数的单调性,然后根据复合函数法“同增异减”的规则进行判定.非选择题部分(共90分)三、填空题:本题共4小题,每小题5分,共20分.13.sin 2______0(填>或<).【答案】>【解析】【分析】判断角所在象限,然后根据正弦函数在每个象限的符号分析即可.【详解】π2π2<<,故2对应的角度终边在第二象限,则sin 20>;故答案为:>.14.函数()π2π200cos 30063f n n ⎛⎫=++⎪⎝⎭({}1,2,3,,12n ∈⋅⋅⋅为月份),近似表示某地每年各个月份从事旅游服务工作的人数,游客流量越大所需服务工作的人数越多,则可以推断,当n =______时,游客流量最大.【答案】8【解析】【分析】根据余弦函数性质求出函数()f n 的最大值及取最大值时n 的值,由此可得结论.【详解】因为{}1,2,3,,12n ∈⋅⋅⋅,所以π2π5π7π4π3π5π11π13π7π5π8π,π,,,,,,2π,,,,636632366323n ⎧⎫+∈⎨⎬⎩⎭,所以当π2π2π63n +=,即8n =时,π2πcos 63n ⎛⎫+ ⎪⎝⎭取最大值1,所以8n =时,()f n 取最大值,又游客流量越大所需服务工作的人数越多,所以8n =时,游客流量最大.15.已知函数()222,0,log ,0,x x x f x x x ⎧--≤⎪=⎨>⎪⎩则方程()()2f f x =的所有根之积为______.【答案】14##0.25【解析】【分析】解方程()()2ff x =,可得出该方程的根,再将所有根全部相乘,即可得解.【详解】令()t f x =,由()()2ff x =可得()2f t =,当0t ≤时,由()222f t t t =--=,即2220t t ++=,则4420∆=-⨯<,即方程2220t t ++=无解;当0t >时,由()2log 2f t t ==,可得14t =或4t =.(1)当14t =时,当0x ≤时,由()2124f x x x =--=可得21204x x ++=,解得122x -+=,222x -=,当0x >时,由()21log 4f x x ==可得1432x =,1442x -=;(2)当4t =时,当0x ≤时,由()224f x x x =--=可得2240x x ++=,4440∆=-⨯<,方程2240x x ++=无解,当0x >时,由()2log 4f x x ==可得452x =,462x -=,因此,方程()()2f f x =的所有根之积为12345614x x x x x x=.故答案为:14.16.若函数()()22ln 1k f x x k x x +⎛⎫=+++⋅+ ⎪⎝⎭的值域为()0,∞+,则实数k 的最小值为______.【答案】2-【解析】【分析】结合题意由值域为()0,∞+转化221x k x +>-+,结合基本不等式求出最值即可.【详解】根据题意,函数()()22ln 1k f x x k x x +⎛⎫=+++⋅+ ⎪⎝⎭的定义域为()()1,00,-⋃+∞,因为()f x 的值域为()0,∞+,所以()()22ln 10k f x x k x x +⎛⎫=+++⋅+> ⎪⎝⎭在()()1,00,-⋃+∞上恒成立,当10x -<<时,则011x <+<,则()ln 10x +<,此时必有220k x k x ++++<,变形可得221x k x +>-+,当0x >时,则11x +>,则()ln 10x +>,此时必有220k x k x ++++>,变形可得221x k x +>-+,综合可得:221x k x +>-+在()()1,00,-⋃+∞上恒成立,设()21x g x x =+,()()1,00,x ∈-⋃+∞,则()()2211111121111x x g x x x x x x x -+===-+=++-++++,因为()()1,00,x ∈-⋃+∞,所以10,x +>且11x +≠,由基本不等式可得()()112201g x x x =++->=+,即()0g x >,所以()201x g x x -=-<+,因为221x k x +>-+在()()1,00,-⋃+∞上恒成立,所以20k +≥,解得2k ≥-,故实数k 的最小值为2-.故答案为:2-.【点睛】关键点点睛:本题的关键是利用参变分离得到221x k x +>-+,再运用函数及基本不等式的思想研究不等式.四、解答题:本题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.17.计算下列各式的值:(1)2log 3333log 2log 52log 2+-;(2)()()222164121248818x xxx x x x---⎛⎫-+-++++ ⎪+⎝⎭.【答案】(1)3(2)4【解析】【分析】(1)根据对数的运算法则可得答案;(2)由指数幂的运算法则及平方和,立方差等公式计算可得答案.【小问1详解】结合题意可得:2log 3333log 2log 52log 2+-+()333log 25log 103log 133=⨯-+=+=;【小问2详解】结合题意可得:()()()()()232218181641212488128281818x x x x x x x x xxxx x --------+⎛⎫-⎡⎤+-+++++-+++ ⎪⎢⎥=⎣⎦++⎝⎭18188284x x x x --=-+-+++=.18.已知向量()1,2a =r,b = .(1)若a b ∥,求b的坐标;(2)若()()52a b a b -+⊥+ ,求a 与b 的夹角.【答案】(1)()2,4b = 或()2,4b =--(2)π3.【解析】【分析】(1)设(),2b a λλλ==r r,结合向量的模长公式求解即可;(2)根据垂直向量数量积为0,结合向量的夹角公式求解即可.【小问1详解】由题意,设(),2b a λλλ==r r.b ==,2λ∴=±,()2,4b ∴=或()2,4b =--.【小问2详解】()()52a b a b -+⊥+ ,()()520a b a b ∴-+⋅+=,225320a ab b ∴--⋅+= ,即2532200a b --⋅+⨯= ,5a b ∴=⋅ .设a 与b的夹角为θ,则1cos2a a b bθ⋅===.又[]0,πθ∈,π3θ∴=,a ∴r 与b 的夹角为π3.19.已知函数()22cossin sin 22x x f x x =-+.(1)求函数()f x 的最小正周期与对称轴方程;(2)当()00,πx ∈且()05f x =时,求0π6f x ⎛⎫+ ⎪⎝⎭的值.【答案】(1)最小正周期为2π,对称轴方程为()ππ4x k k =+∈Z(2)10【解析】【分析】(1)利用三角恒等化简函数()f x 的解析式,利用正弦型函数的周期公式可得出函数()f x 的最小正周期,利用正弦型函数的对称性可得出函数()f x 的对称轴方程;(2)由已知条件可求出0πsin 4x ⎛⎫+⎪⎝⎭的值,利用同角三角函数的基本关系求出0πcos 4x ⎛⎫+ ⎪⎝⎭的值,再利用两角和的正弦公式可求得0π6f x ⎛⎫+ ⎪⎝⎭的值.【小问1详解】解:由题设有()πcos sin 4f x x x x ⎛⎫=+=+ ⎪⎝⎭,所以,函数()f x 的最小正周期是2πT =,由()πππ42x k k +=+∈Z ,可得()ππ4x k k =+∈Z ,所以,函数()f x 的对称轴方程为()ππ4x k k =+∈Z .【小问2详解】解:由()05f x =0π3245x ⎛⎫+= ⎪⎝⎭,即0π3sin 45x ⎛⎫+= ⎪⎝⎭,因为()00,πx ∈,所以0ππ5π,444x ⎛⎫+∈ ⎪⎝⎭.若0πππ,442x ⎛⎫+∈ ⎪⎝⎭,则0πsin 42x ⎛⎫+> ⎪⎝⎭与0π3sin 45x ⎛⎫+= ⎪⎝⎭,矛盾则0ππ,π42x ⎛⎫+∈ ⎪⎝⎭.从而0π4cos 45x ⎛⎫+=- ⎪⎝⎭.于是000πππππ64646f x x x ⎡⎤⎛⎫⎛⎫⎛⎫+=++=++ ⎪ ⎪ ⎪⎢⎥⎝⎭⎝⎭⎝⎭⎣⎦00ππππsin cos cos sin 4646x x ⎤⎛⎫⎛⎫=+++ ⎪ ⎪⎥⎝⎭⎝⎭⎦33413642525210⎫-=⨯-⨯=⎪⎪⎝⎭.20.如图,在扇形OPQ 中,半径1OP =,圆心角π3POQ ∠=,A 是扇形弧上的动点,过A 作OP 的平行线交OQ 于B .记AOP α∠=.(1)求AB 的长(用α表示);(2)求OAB 面积的最大值,并求此时角α的大小.【答案】(1)3cos sin 3AB αα=-(2)π6α=时,面积的最大值为312.【解析】【分析】(1)过A ,B 作OP 的垂线,垂足分别为C ,D ,由AB OD OC =-求解;(2)由11cos sin sin 223S AB BC ααα⎛⎫=⨯=- ⎪ ⎪⎝⎭33sin 26612πα⎛⎫=+- ⎪⎝⎭求解.【小问1详解】解:过A ,B 作OP 的垂线,垂足分别为C ,D,则cos OD α=,sin BC α=,OC ∴cos sin 3AB CD αα∴==-.【小问2详解】()11313cos sin sin sin 21cos 2223412S AB BC ααααα⎛⎫=⨯=-=-- ⎪ ⎪⎝⎭,31333sin 2cos 2sin 222126612πααα⎛⎫⎛⎫=+-=+-⎪ ⎪⎪⎝⎭⎭.03πα<<,52666πππα∴<+<,262ππα∴+=,即6πα=时,61212S =-=最大,因此,当6πα=时,面积的最大值为12.21.已知函数()()e 1exxf x a -=-+.(1)当1a =-时,讨论()f x 的单调性(不必给出证明);(2)当1a =时,求()f x 的值域;(3)若存在1x ,()2,0x ∈-∞,使得()()120f x f x ==,求1222e e x x +的取值范围.【答案】(1)()f x 在R 上单调递减(2)[)1,+∞(3)1,12⎛⎫⎪⎝⎭【解析】【分析】(1)根据函数之差的单调性判断即可;(2)根据基本不等式求解即可(3)令()e 0,1x t=∈,再根据二次函数的零点存在性问题列式可得4a >,再根据韦达定理求解即可.【小问1详解】当1a =-时,()ee 1xx f x -=-+,因为e x y -=为减函数,e x y =为增函数,故()f x 在R 上单调递减;【小问2详解】当1a =时,()e e 111x x f x -=+-≥=,当且仅当0x =时取等号;所以()f x 的值域为[)1,+∞.【小问3详解】令()e 0,1x t=∈,则问题等价于存在1t ,()20,1∈t ,使得210at at -+=令()21gt at at =-+,因为()g t 在()0,1t ∈有两个零点,故()()200010101240a g g a a >⎧⎪>⎪⎪>⎨⎪<<⎪⎪->⎩,即201010101240a a a >⎧⎪>⎪⎪>⎨⎪<<⎪⎪->⎩解得4a >.由韦达定理和根的定义可知:121t t +=,121t t a=.()12222221212122e e 21x x t t t t t t a∴+=+=+-=-又因为4a >,故1222e e x x +的取值范围为1,12⎛⎫⎪⎝⎭.【点睛】关键点点睛:本题第三问的关键是采用换元法,设()e 0,1x t =∈,将指数方程转化为一元二次方程,最后利用二次函数根的分布从而得到范围.22.二次函数()f x 的最大值为34,且满足()()22f x f x -=-,()114f =-,函数()()0k g x k x=≠.(1)求函数()f x 的解析式;(2)若存在[]01,1x ∈-,使得()()00f x g x =,且()()f x g x -的所有零点构成的集合为M ,证明:[]1,1M ⊆-.【答案】(1)()234f x x =-(2)证明见解析【解析】【分析】(1)分析可知函数()f x 为偶函数,根据题意设()234f x ax =+,其中a<0,由()114f =-可求出a 的值,即可得出函数()f x 的解析式;(2)由()()0f x g x -=可得()22000304x x xx x x ⎛⎫-++-= ⎪⎝⎭,令()220034x x x x x ϕ=++-,分01x =、01x =-、()()01,00,1x ∈- 三种情况讨论,在第一种情况下,直接验证即可;在第二种情况下,直接利用零点存在定理可证得结论成立,综合可得出结论.【小问1详解】解:令2t x =-,由()()22f x f x -=-可得()()f t f t =-,所以,函数()f x 为偶函数,又因为二次函数()f x 的最大值为34,可设()234f x ax =+,其中a<0,则()31144f a =+=-,解得1a =-,所以,()234f x x =-.【小问2详解】解:因为()()00f x g x =,即20034k x x -=,所以30034k x x =-+,其中[)(]01,00,1x ∈- .由()()0f x g x -=,化简可得330033044x x x x --+=即()22000304x x xx x x ⎛⎫-++-= ⎪⎝⎭.令()220034x x x x x ϕ=++-,由判别式222000343304x x x ⎛⎫∆=--=-≥ ⎪⎝⎭,可知()0x ϕ=在R 上有解,①当01x =时,()2220031044x x x x x x x ϕ=++-=++=,此时[]1,11,12M ⎧⎫=-⊆-⎨⎬⎩⎭;②当01x =-时,()2220031044x x x x x x x ϕ=++-=-+=,此时[]1,11,12M ⎧⎫=⊆-⎨⎬⎩⎭;③当()()01,00,1x ∈- 时,()x ϕ的对称轴是011,222x x ⎛⎫=-∈- ⎪⎝⎭,因为2222000003330242444x x x x x ϕ⎛⎫-=-+-=-< ⎪⎝⎭,()22200000311110442x x x x x ϕ⎛⎫-=-+-=-+=-≥ ⎪⎝⎭,()22200000311110442x x x x x ϕ⎛⎫=++-=++=+≥ ⎪⎝⎭,由零点存在定理可知,函数()x ϕ在区间01,2x ⎡⎤--⎢⎥⎣⎦、0,12x ⎡⎤-⎢⎥⎣⎦上各有一个零点,不妨设函数()x ϕ在区间01,2x ⎡⎤--⎢⎥⎣⎦、0,12x ⎡⎤-⎢⎥⎣⎦内的零点分别为1x 、2x ,此时{}[]012,,1,1Mx x x =⊆-.综合①②③,[]1,1M⊆-成立.【点睛】关键点点睛:考察二次函数的零点,一般需要考虑以下几个要素:(1)二次项系数的符号;(2)判别式;(3)对称轴的位置;(4)区间端点函数值的符号.。
浙江省金华十校2022-2023学年高二上学期期末模拟考试数学试题及答案
金华十校2022—2023学年第一学期期末模拟考试高二数学试题卷本试卷分为选择题和非选择题两部分.考试时间120分钟.试卷总分为150分.请考生按规定用笔将所有试题的答案涂、写在答题纸上.选择题部分(共60分)一、选择题:本题共8小题,每小题5分,共40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.中心在原点的双曲线C 的右焦点为()2,0,实轴长为2,则双曲线C 的方程为A .2213x y -=B .221x -=C .2213x y -=D .2213y x -=2.圆224x y +=与圆()()22:219C x y -+-=的位置关系是A .内切B .相交C .外切D .相离3.设n S 为等差数列{}n a 的前n 项和,834S a =,72a =-,则9a =A .-6B .-4C .-2D .24.平面α的一个法向量()2,0,1n =,点()1,2,1A -在α内,则点()1,2,3P 到平面α的距离为A .B .2C .5D .105.已知3log 0.3a =,0.33b =, 1.30.3=c ,则a ,b ,c 的大小关系是A .a b c<<B .a c b<<C .c<a<bD .b<c<a6.设函数f (x )=x 2+x +a (a >0),已知f (m )<0,则A .f (m +1)≥0B .f (m +1)≤0C .f (m +1)>0D .f (m +1)<07.已知函数2()42x xf x =-.若数列{}n a 的前n 项和为n S ,且满足()1n n S f a +=,211a a =,则1a 的最大值为A .9B .12C .20D .6348.如图,在四棱锥P ABCD -中,底面ABCD 是矩形,侧面PAD 是等腰直角三角形,平面PAD ⊥平面,2,ABCD AD AB AP ===PC 上一动点M 到直线BD 的距离最小时,过,,A D M 做截面交PB 于点N ,则四棱锥P ADMN -的体积是A.27B.4C.27D.16二、选择题:本题共4小题,每小题5分,共20分.在每小题给出的选项中,有多项符合题目要求,全部选对的得5分,部分选对的得2分,有选错的得0分.9.已知正方体1111ABCD A B C D -,E ,F 分别为11A D ,1CC 的中点,则A .直线BE 与1B F 所成角为90︒B .直线1BC 与1CD 所成角为60︒C .直线1AA 与平面11ABC D 所成角为45︒D .直线1AA 与平面BFD10.已知数列{}n a 满足:12a =,112n n a a -=-,2n =,3,4,…,则A .565a =B .对任意*n ∈N ,1n n a a +<恒成立C .不存在正整数p ,q ,r 使p a ,r a ,q a 成等差数列D .数列11n a ⎧⎫⎨⎬-⎩⎭为等差数列11.直线l 经过抛物线24y x =的焦点F ,且与抛物线相交于A ,B 两点,连接点A 和坐标原点O 的直线交抛物线准线于点D ,则A .F 坐标为()2,0B .AB 最小值为4C .DB 一定平行于x 轴D .AOB可能为直角三角形12.已知()f x 和()g x 都是定义在R 上的函数,则A .若()()110f x f x ++-=,则()f x 的图象关于点()1,0中心对称B .函数()1y f x =-与()1y f x =-的图象关于关于直线=0x 对称C .若()f x 是不恒为零的偶函数,且对任意实数x 都有()()()11xf x x f x +=+,则502f f ⎛⎫⎛⎫= ⎪ ⎪⎝⎭⎝⎭D .若方程()0x f g x -=⎡⎤⎣⎦有实数解,则()g f x ⎡⎤⎣⎦不可能...是215x x ++非选择题部分(共90分)三、填空题:本题共4小题,每小题5分,共20分.13.已知直线60x my ++=和()2320m x y m -++=互相平行,则实数m 的值为▲.14.已知等差数列{}n a 的公差为1,且3a 是2a 和6a 的等比中项,则{}n a 前10项的和为▲.15.如图,把正方形纸片ABCD 沿对角线AC 折成直二面角,则折纸后异面直线AB ,CD 所成的角为▲.16.2022年北京冬奥会开幕式中,当《雪花》这个节目开始后,一片巨大的“雪花”呈现在舞台中央,十分壮观.理论上,一片雪花的周长可以无限长,围成雪花的曲线称作“雪花曲线”,又称“科赫曲线”,是瑞典数学家科赫在1904年研究的一种分形曲线.如图是“雪花曲线”的一种形成过程:从一个正三角形开始,把每条边分成三等份,然后以各边的中间一段为底边分别向外作正三角形,再去掉底边,重复进行这一过程.若第1个图中的三角形的周长为1,则第n 个图形的周长为▲;若第1个图中的三角形的面积为1,则第n 个图形的面积为▲.四、解答题:本题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.17.(本题满分10分)已知数列{}n a 是公差为2的等差数列,且满足1a ,2a ,5a 成等比数列.(Ⅰ)求数列{}n a 的通项公式;(Ⅱ)求数列11n n a a +⎧⎫⎨⎬⎩⎭的前n 项和n T .18.(本题满分12分)已知点A (-2,0),B (2,0),动点M (,)x y 满足直线AM 与BM 的斜率之积为12,记M 的轨迹为曲线C .(Ⅰ)求C 的方程,并说明C 是什么曲线;(Ⅱ)若直线:3l y x =-和曲线C 相交于E ,F 两点,求||EF .为了保证我国东海油气田海域海上平台的生产安全,海事部门在某平台O 的北偏西45°方向22km 处设立观测点A ,在平台O 的正东方向12km 处设立观测点B ,规定经过O 、A 、B 三点的圆以及其内部区域为安全预警区.如图所示:以O 为坐标原点,O 的正东方向为x 轴正方向,建立平面直角坐标系.(Ⅰ)试写出A ,B 的坐标,并求两个观测点A ,B 之间的距离;(Ⅱ)某日经观测发现,在该平台O 正南10km C 处,有一艘轮船正以每小时87km 的速度沿北偏东45°方向行驶,如果航向不变,该轮船是否会进入安全预警区?如果不进入,请说明理由;如果进入,则它在安全警示区内会行驶多长时间?20.(本题满分12分)如图,在三棱柱111ABC A B C -中,11131,2AB AC BC AA AC A B ======,点N 为11B C 的中点.(Ⅰ)求1BC 的长;(Ⅱ)求直线AN 与平面11A BC 所成角的正弦值.已知等差数列{}n a 中,公差0d ≠,35a =,2a 是1a 与5a 的等比中项,设数列{}n b 的前n项和为n S ,满足()*41n n S b n =-∈N .(Ⅰ)求数列{}n a 与{}n b 的通项公式;(Ⅱ)设n n n c a b =,数列{}n c 的前n 项和为n T ,若118n T λ⎛⎫+≤ ⎪⎝⎭对任意的*n ∈N 恒成立,求实数λ的取值范围.22.(本题满分12分)已知椭圆22122:1(0)x y C a b a b +=>>的离心率为12e =,且过点31,2P ⎛⎫- ⎪⎝⎭.点P 到抛物线22:2(0)C y px p =->的准线的距离为32.(Ⅰ)求椭圆1C 和抛物线2C 的方程;(Ⅱ)如图过抛物线2C 的焦点F 作斜率为(0)k k >的直线交抛物线2C 于A ,B 两点(点A 在x 轴下方),直线PF 交椭圆1C 于另一点Q .记FBQ △,APQ 的面积分别记为12S S 、,当PF 恰好平分APB ∠时,求12S S 的值.金华十校2022—2023学年第一学期期末模拟考试高二数学卷评分标准与参考答案一、选择题:本大题共8小题,每小题5分,共40分。
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金华十校2022-2023学年第二学期期末调研考试
高一思想政治参考答案
一、判断题(本大题共5小题,每小题1分,共5分。
判断下列说法是否正确,正确的请将
二、选择题(本大题共17小题,每小题2分,共34分,每小题列出的四个备选项中只有一
三、选择题Ⅱ(本大题共7小题,每小题3分,共21分。
每小题列出的四个备选项中只有一个是符合题目要求的,不选、多选、错选均不得分。
)
四、综合题 (本大题共3小题,共40分)
30(1)①我国是人民当家作主的社会主义国家,一切权力属于人民,人民是国家的主人。
(1分)通过畅通、有序的民主渠道,广大人民群众建言献策、法律专家给出专业意见,符合科学立法和民主立法的要求。
(2分)
②全国人大是我国最高国家权力机关,行使最高立法权,有权审议通过《立法法》修改草案。
(1分)十四届全国人民代表大会一次会议审查了该草案并获得高票通过,表明全国人大行使修改基本法律的权力,确保了该草案具有法律权威性。
(2分)
③人民政协是中国共产党领导的多党合作和政治协商的重要机构,是社会主义协商民主的重要渠道和专门协商机构,(1分)履行政治协商、参政议政等职能,为党和国家建言献策。
(1分)全国政协十四届一次会议讨论了该方案,履行自己的职责,把协商民主贯穿全过程,增进共识、促进团结,集思广益,促进决策科学化和民主化。
(1分)
(2)①科学立法要顺应时代发展要求,(1分)《立法法》的修改顺应新时代法治建设新要求,与新时代中国特色社会主义伟大进程相适应,致力于制定符合国情和实际的良法和管用之法。
(2分)
②科学立法要充分发扬民主。
(1分)广泛征求基层群众和社会各方人士对有关法律草案的意见,坚持民主立法,广开言路,集思广益;健全立法机关和社会公众沟通机制,通过调研座谈,征求法律专家意见,充分发挥社会各界在立法协商中的作用,拓宽公民有序参与立法途径,广泛凝聚社会共识。
(2分)
③科学立法要做到依法立法。
(1分)《立法法》的修改按照法定职权、依据法定程序,在法
治的轨道上制定这一合法有效的“管法的法”。
(1分)
(3)①认真行使人大代表的各项职权。
(1分)如在调查研究的基础上形成高质量议案,依照法定程序向人民代表大会递交议案等。
(1分)
②与人民群众保持密切联系。
(1分)通过走访群众、问卷调查、开通代表信箱等方式深入群众,听取群众意见和建议,通过代表通道反映群众呼声,做好人民利益的代言人。
(1分)
31. ①该观点是片面的。
②勇于自我革命是中国共产党区别于其他政党的显著标志。
(1分)我党作为世界上最大的马克思主义政党,要始终赢得人民拥护、巩固长期执政地位,必须时刻擦亮初心、刀刃向内,确保党永远不变质,始终成为中国人民最可靠、最坚强的主心骨。
(1分)勇于自我革命是我党能够始终走在时代前列,永葆党的先进性和纯洁性的需要,要以勇于自我革命赢得永葆先进纯洁的历史主动。
(1分)该观点看到了自我革命的重要性,有一定的合理性。
(1分)但找到了跳出治乱兴衰历史周期率的第二个答案,并不等于已经跳出治乱兴衰历史周期率。
只有始终坚持自我革命,才能确保我党始终成为坚强领导核心。
(1分)
③我们党历经千锤百炼而朝气蓬勃的一个重要原因是,始终坚持党要管党、全面从严治党。
(1分)在新形势下,党面临的“四大考验”“四种危险”将长期存在,各种危险更加尖锐地摆在全党面前。
(1分)打铁必须自身硬。
勇于自我革命,保持解决大党独有难题的清醒和坚定,才能把我党建设成为经得起各种风浪、朝气蓬勃的马克思主义执政党。
(1分)党的自我革命,不是阶段性的、暂时的,党的自我革命永远在路上,任何时候、任何阶段都不能丧失“刀刃向内”的勇气。
(1分)
32(1)党中央把《党和国家机构改革方案》提交全国人大表决通过,体现了党的路线、方针、政策依据法定程序转化为国家意志,使之成为全体公民共同遵守的法律规范这一基本功能。
(2分)
(2)①国务院机构改革是建设法治政府的应有之义,一系列改革举措势在必行。
(1分)机构改革有利于推进法治政府建设和全面依法治国,有利于政府实现善政,形成政府与公民、社会组织互信互助的新型关系。
(1分)
②国务院机构改革根据问题导向重新组建和新建机构,(1分)使政府部门之间关系的配置更加科学合理,可以更好地履行政府基本职能,建设职能科学的政府。
(1分)
③根据新形势新要求,对国务院机构进行新建、合并、归为等,进一步优化职责体系,(1分)推进机构、职能、权限、责任法定化,有利于建设权责法定的政府。
((1分)
④国务院机构改革有利于提高政府的治理能力,提升行政执法水平,(1分)更好地满足人民群众的需求,为人民谋幸福,建设人民满意的政府。
(1分)。