模拟试题3
保安员模拟试题 3
保安员模拟试题 3一、单选题:1、保安员在出入口值勤发现不法侵害时,错误的做法是(D )。
A: 立即采取措施予以制止B: 将违法人员送交服务单位C: 保护现场D: 对违法人员进行审问2、单位内发生涉嫌刑事案件时,单位内部治安保卫部门应当(C )。
A: 立即报警,并先期开展搜查工作B: 立即报警,并讯问犯罪嫌疑人C: 立即报警,采取现场保护措施D: 暂不报警,内部调查犯罪嫌疑人3、春运期间,保安员李某和张某在候车大厅巡逻时发现两名乘客因相互碰撞而大声争吵,引来不少围观人员。
保安员李某和张某下列做法不正确的是(A )。
A: 将两人带回保安队进行经济处罚B: 如果双方争吵激烈,两名保安员可将两人分开进行劝解C: 如果争吵的过程中,围观人员较多,两名保安员可劝导疏散围观群众D: 劝阻无效,立即报告4、保安押运公司为某银行护送款项,途中突然发生爆胎,造成运钞车无法行进,下列做法错误的是(C )。
A: 立即报警B: 向本单位报告C: 请求银行派车将款项接走D: 严密看管所押物品5、保安员在值勤中遇有不法侵害时,应当(D )。
A: 立即制止,将违法犯罪嫌疑人轰出客户单位B: 立即制止,抓获违法犯罪嫌疑人C: 组织人员抓获违法犯罪嫌疑人D: 立即制止,在确保安全的情况下将违法犯罪嫌疑人扭送公安机关6、对于一个建筑物来讲,(A )处在消防中枢位置,具有重要的防火、灭火作用。
A: 消防控制室B: 门卫室C: 保安值班室D: 办公室7、保安员在固定岗位进行目标部位守护时应注意观察岗位周围的(B )。
A: 过往车辆B: 地形、地物和设备C: 标志性建筑物D: 流动人员8、在现场急救中,为了使胸外按压更加有效,正确的方法是(B )。
A: 按压时间长一些,能压出更多的血B: 按压和解除按压时间相等C: 按压后,多放松一段时间,使心脏更好的充盈D: 压5次,休息1分钟后,再压5次,反复操作不间断9、风险管理的三要素是(A ),风险评价和风险控制。
成本会计模拟试题(3)
成本会计模拟试题(3)一、单项选择题(本大题共20小题,每小题1分,共20分)l.成本会计是会计的一个分支,是一种专业会计,其对象是( B )A.企业B.成本C.资金D.会计主体2.工业企业的生产组织类型和管理要求对产品成本计算的影响,主要表现在( D )A.完工产品与在产品之间分配费用的方法B.成本计算期的确定C.间接费用分配方法的确定D.成本计算对象的确定3.由于车间管理不善造成的在产品的盘亏和毁损,应从“待处理财产损溢”转入的科目是( A )A.管理费用B.制造费用C.其他应收款D.营业外支出4.下列各项费用中,不属于...期间费用的是( B )A.财务费用B.制造费用C.管理费用D.销售费用5.以下应计入工业企业经营管理费用的税金是(D )A.印花税B.增值税C.营业税D.代扣代缴职工个人所得税6.在产品不计算成本法,适用的情况是( D )A.各月月末完工产品数量变化很小B.各月月末在产品数量变化很大C.各月月末在产品数量很大D.各月月末在产品数量很小7.辅助生产车间完工入库的工具、模具在结转成本时,应借记的科目是( D )A.低值易耗品B.辅助生产成本C.产成品D.自制半成品8.下列各项中,属于可修复废品损失的是( C )A.返修以前发生的生产费用B.可修复废品的生产成本C.返修过程中发生的修复费用D.返修以前发生的生产费用加上返修时发生的修复费用9.为了简化核算工作,制造费用的费用项目在设立时主要考虑的因素是( A )A.费用的性质是否相同B.是否直接用于产品生产C.是否间接用于产品生产D.是否用于组织和管理生产10.下列项目中,需要计提折旧的是( B )A.当月减少的设备B.当月增加的设备C.经营性租入的机器D.提前报废的生产线11.管理上不要求分步骤计算成本的多步骤生产,适合采用的成本计算方法是( B )A.简化的分批法B.分批法C.品种法D.分类法12.工业企业用于固定资产购建的费用,转入“固定资产”科目之前应先记的科目是(D )A.生产成本B.制造费用C.管理费用D.在建工程13.计算不可修复废品的生产成本,可以按废品所耗的实际费用,也可以按废品所耗的( B )A.消耗定额B.定额费用C.定额消耗D.费用定额14.应计入产品成本的停工损失是( C )A.由于火灾造成的停工损失B.应由过失单位赔偿的停工损失C.季节性和固定资产修理期间的停工损失D.由于地震造成的停工损失15.采用简化的分批法进行成本计算,适用的情况是( A )A.投产批数繁多,而且未完工批数较多B.投产批数较少,而且未完工批数较少C.投产批数繁多,而且完工批数较多D.投产批数较少,而且未完工批数较多16.单位价值较高,使用期限较长且不易破损的低值易耗品,其摊销方法应采用(D )A.一次摊销法B.五五摊销法DC.净值摊销法D.分次摊销法17.对于企业联产品的成本计算,一般采用( C )A.分批法B.分步法C.分类法D.定额法18.平行结转分步法下,在企业的产成品入库时,应计入产成品成本的份额,从各步骤产品成本明细账中转出,则会计分录为( D )A.借:生产成本贷:自制半成品B.借:生产成本贷:产成品C.借:自制半成品贷:生产成本D.借:产成品贷:生产成本19.下列各项中,既是一种成本计算方法,又是一种成本管理方法的是( D )A.分类法B.分批法C.品种法D.定额法20.成本报表分析中,采用连环替代分析方法时,各因素的顺序为(D )A.可以任意排列B.应按一定原则排列:先质量后数量C.应按一定原则排列:先主要后次要D.应按一定原则排列:先数量后质量;相同性质的因素中,先主要后次要二、多项选择题(本大题共10小题,每小题1分,共10分)21.成本会计的环节是指成本会计工作应该做好的几个方面,具体包括(ABCD )A.成本的预测和决策B.成本的核算和控制C.成本的考核和分析D.制定成本计划E.设置成本核算机构22.以下各种成本计算方法中,属于辅助方法的有(CD )A.品种法B.分批法C.分类法D.定额法E.分步法23.下列各项中,属于生产费用要素的有(ABDE )A.利息费用B.折旧费用C.实收资本D.外购材料E.应付工资24.完工产品与在产品之间分配费用,采用在产品按固定成本计价法的情况有(BD )A.各月末在产品数量较大B.各月末在产品数量较小C.各月成本水平相差不大D.各月末在产品数量虽大,但各月之间变化不大E.各月末完工产品数量较小25.结转生产企业的停工损失时,其对应的借方科目有( C DA )A.其他应收款B.原材料C.制造费用D.基本生产成本E.营业外支出26.分配辅助生产费用的各种方法中,有交互分配性质的有(ABC )A.交互分配法B.代数分配法C.计划成本分配法D.直接分配法E.顺序分配法27.产品成本计算的分步法中,若第一车间生产半成品,第二车间生产产成品,则登记第二生产车间成本明细账的相关凭证有(AD )A.各种费用分配表B.采购发票C.产成品交库单D.半成品领用单E.第一车间在产品定额成本资料28.常用的核算原材料定额差异的方法有(ABE )A.切割核算法B.盘存法C.标准成本法D.分步法E.限额法29.在系数法下,选择作为同类产品中的标准产品的条件主要包括(AB )A.产量较大B.产品价格比较稳定C.销量稳定D.产品生产比较稳定或规格折中E.产量较小30.企业成本报表一般包括(ABCDE )A.主要产品单位成本表B.产品生产成本表C.制造费用明细表D.产品销售费用明细表E.财务费用、管理费用明细表三、判断说明题,正者在括号内打“√”,误者在括号内打“×”并说明理由。
《地球概论》模拟试题(三)
地球概论》模拟试题(三)《地球概论》模拟试题(三)一、名词解释(每小题3分,共15分)1、恒星的自行2、地轴进动3、黄道4、潮汐现象5、地理纬度二、填空题(每空0.5分,共10分)1、地球在绕日公转的轨道上,月初过近日点,月初过远日点。
2、标准时制度包括两方面的内容,即:和。
3、地球自转真正一周(360°)我们称作日,平时我们计算时间所用的是日。
4、地内行星的逆行发生在前后,地外行星的逆行发生在前后。
5、彗星由冰物质组成,一个发育完全的彗星由、和三部分组成。
6、太阳大气包括、、三层。
7、地球自转的速度除两极点为外,角速度全球,线速度随纬度的增加而,随高度的增加而。
8、地轴进动的发生与地球的形状、和三个因素有关。
三、选择题(每小题有一个或一个以上正确答案,多选、漏选、错选均不得分。
每小题3分,共21分)1、夜半月落,该是什么月相?()A.上弦B.下弦C.朔D.望2、月球围绕地球公转360°的周期是一个()。
A.恒星月B.交点月C.朔望月3、将以下四地夏至日的正午太阳高度由大到小排序,正确的是()。
已知四地纬度为:卑尔根(60°24′N),上海(31°12′N),达尔文港(12°30′S),圣克鲁斯(40°18′S)。
A.卑尔根,上海,达尔文港,圣克鲁斯B.上海,达尔文港,卑尔根,圣克鲁斯C.上海,卑尔根,达尔文港,圣克鲁斯D.上海,达尔文港,圣克鲁斯,卑尔根4、从南至到升分()。
A.阳光直射点趋近赤道B.北半球各地昼渐长,但短于夜C.南半球纬度越高的地方昼越长,正午太阳高度越大D.北极附近的极昼地区逐渐扩大5、下列港口城市中,昼夜长短变化幅度最大的是()。
A.新加坡(1°N)B.伦敦(51°30′N)C.上海(31°12′N)D.开普敦(23°33′S)6、以天文晨昏蒙影为界,下列哪些地方有白夜现象()。
模拟试卷-职业道德模拟试题三及答案
职业道德模拟试题三一、单项选择题(共20分,每题2分)1.学习职业道德的意义之一是()A 有利于自己工作B 有利于反对特权C 有利于改善与领导的关系D 有利于掌握道德特征2.属于职业道德特征的内容是()A 具有很强的操作性B 具有很强的实践性C 具有很强的立法性D 具有很强的监督性3.社会主义职业道德的核心思想是()A 集体主义B 为人民服务C 立党为公D 执政为民4.职业义务的特点是()A 无偿性和奉献性B 利他性和自觉性C 尽责任和不计报酬D 利他性和无偿性5.正确行使职业权力的首要要求是()A 要树立一定的权威性B 要求执行权力的尊严C 要树立正确的职业权力观D 要能把握恰当的权力分寸6.办事公道要求做到()A 坚持原则,秉公办事B 公平交易,实行平均主义C 一心为公,不计较他人得失D 办事以本单位利益为重7.酒店工作人员职业道德行为规范条款中有()A 满腔热情,多劝饮酒B 保持房间卫生,陪客人聊天C 工作负责,不断纠正客人错误D 宾客至上,优质服务8.职业道德行为的特点之一是()A 认真修养,才能成为高尚的人B 对他人和社会影响重大C 不管行为方式如何,只要效果好D 在职业活动环境中才有职业道德9.职业道德行为评价的根本标准是()A 好与坏B 公与私C 善与恶D 真与伪10.职业道德行为修养过程中不包括()A 自我学习B 自我教育C 自我满足D 自我反省二、多项选择题(共20分,每题2分)1.本职业道德教材的特点有()A 简洁明了,通俗易懂B 思路清晰,逻辑性强C 突出重点,兼顾其他D 针对性强,创新点多2.职业道德的社会作用有:()A 有利于处理好邻居关系B 规范社会秩序和劳动者职业行为C 促进企业文化建设D 提高党和政府的执政能力3.职业道德与社会公德的关系有()A 互不相关,彼此独立B 互相转换,唇亡齿寒C 互相影响,互相渗透D 互为基础,互相促进4.职业责任的特点有()A 差异性B 自律性C 独立性D 强制性5.遵守职业纪律要求做到()A 熟知职业纪律,避免无知违纪B 严守职业纪律,不能明知故犯C 自觉遵守职业纪律,养成严于律己的习惯D 认真履行职业责任,搞好本职工作6.正确行使职业权力要做到()A 要树立正确的职业权力观B 要正确使用手中的职业权力C 要互相支持,互相帮助D 要互相监督,互相抵制滥用职权之风7.职业道德行为基本规范的内容有()A 爱岗敬业,忠于职守B 诚实守信,宽厚待人C 办事公道,服务群众D 以身作则,奉献社会8.属于职业道德的特殊行为规范的是()A 遵守法纪,文明安全B 人道主义,救死扶伤C 准班正点,尊客爱货D 关爱学生,有教无类9.职业道德行为评价的类型有()A 社会评价B 上级评价C 集体评价D 自我评价10.职业道德评价的作用有()A 裁判作用B 激励作用C 调节作用D 导向作用三、判断题(共20分,每题2分)1.学习职业道德对于行风建设作用不大。
高考地理模拟试题卷(三)及答案解析
高考地理模拟试题卷(三)及答案解析地理本试卷分选择题和非选择题两部分,满分100分,考试用时50分钟。
一、选择题:共11小题,每小题4分,共44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。
从2022年9月19日起,科威特开通了与西安(34°N,108°E)之间直航运营的定期客运航班。
若某中国旅客乘坐该航班22:30从西安出发,将在科威特当地区时4:10到达。
下图为科威特位置示意图。
据此完成1~3题。
1.该直航客运航班的飞行时间约为()A.9小时40分B.9小时52分C.10小时28分 D.10小时40分2.科威特—西安直航的开通运营,对两地产生的显著影响最可能的是()A.缩短两地空间距离 B.增加商贸往来C.促进国际人口迁移D.加快物流流通3.两国的经济互补性强,中国向科威特进口和出口的大宗商品最可能分别为()A.原油、机械设备 B.珍珠、铁矿C.电器、普通服装D.椰枣、淡水(高考风向题)2022年5月31日,我国渤海海域盛行偏南风,下图是当日海平面等压线分布图。
据此完成4~6题。
4.甲、乙、丙、丁四地中,气压最可能与北京相同的是()A.甲 B.乙C.丙 D.丁5.图示的最大气压差可能是()A.7 hPa B.10 hPaC.13 hPa D.16 hPa6.图示时刻长春的风向是()A.偏东风B.偏西风C.偏南风D.偏北风首店是指某品牌在某区域开设的第一家门店,或区域内已有品牌开设的第一家概念店、体验店等。
首店经济是区域利用特有优势,吸引首店汇聚,促进区域经济发展的经济形态。
下图是2019年上半年我国部分城市首店数量及类型统计图。
据此完成7~8题。
7.当今时代涌现出越来越多标志性的概念店、体验店,主要得益于()A.品牌效应B.价格优势C.创新能力D.资讯发达8.上海成为我国首店数量最多的城市,最主要的原因是()A.交通便捷,通达度高B.政策支持,改革开放早C.资金雄厚,设施完善D.经济发达,消费水平高2022年10月6日,江苏兴化垛田成功入选第九批世界灌溉工程遗产名录。
临床助理医师考前模拟试题(3)【精选附答案】
临床助理医师考前模拟测试试题1、婴儿腹泻伴低钾血症时下列哪一项不正确A.腹泻时排钾过多致低钾B.酸中毒时血钾更低C.血钾低于3.5mmol/L时出现低钾症状D.补液后钾从尿中排出增加E.补液后血钾较补液前相对较低【答案】B2、男性,43岁,肝硬化病史3年,三天前呕血后出现昏迷,经治疗今日能够回答问题,但不能完成简单的计算,目前可能的诊断是A.肝性脑病Ⅳ期B.肝性脑病Ⅲ期C.肝性脑病Ⅱ期D.肝性脑病Ⅰ期E.亚临床肝性脑病【答案】C3、慢性阻塞性肺疾病的主要特征是A.大气道阻塞B.气流阻塞C.双肺哮鸣音D.桶状胸E.胸片示肺野透亮度增加【答案】B4、属于酸性氨基酸的是A.谷氨酸B.丝氨酸C.酪氨酸D.赖氨酸E.苏氨酸【答案】A5、下列有关急性胰腺炎的各项检查中.最早出现异常的是A.血清脂肪酶B.血清正铁血清蛋白C.血清淀粉酶D.尿淀粉酶E.血清乳酸脱氢酶【答案】C6、糖皮质激素的临床应用不包括A.感染性休克B.器官移植术后C.急性角膜炎D.Cushing氏综合征E.红斑狼疮【答案】D7、肺淤血时,痰中出现胞质中含有棕黄色色素颗粒的巨噬细胞称为A.尘细胞B.肺泡巨噬细胞C.异物巨细胞D.单核细胞E.心力衰竭细胞【答案】E8、残胃癌发生在因良性病变施行胃大部切除术后至少A.1年B.2年C.3年D.4年E.5年【答案】E9、正态分布的数值变量资料.描述离散趋势的指标最好选用A.全距B.百分位数C.方差D.标准差E.变异系数【答案】D10、白喉带菌者.沙眼依原体所致婴儿肺炎及结肠炎,首选A.青霉素GB.头孢菌素C.林可霉素D.万古霉素E.红霉素【答案】E11、中和抗体抗病毒的主要作用机制是阻止病毒A.吸附细胞B.基因表达C.脱壳和穿入D.生物合成E.释放【答案】A12、男,60岁,高血压病史近20年,经检查:心室肌肥厚,血压:22.6/13.3kPa。
最好选用哪种降压药A.氢氯噻嗪B.可乐定C.卡托普利D.维拉帕米E.普萘洛尔【答案】C13、初产妇第一产程活跃期停滞是指进入活跃期后宫口不再扩张超过A.1小时B.1小时30分C.2小时D.2小时30分E.3小时【答案】C14、手部创伤止血时止血带应缚于A.上臂上1/3处B.上臂中1/3处C.上臂下1/3处D.前臂中端E.腕部【答案】A15、皮下出血面积的直径多大称为瘀斑A.<2mmB.2——3mmC.3——5mmD.>5mmE.以上均可【答案】D16、不参与三羧酸循环的化合物是A.柠檬酸B.草酰乙酸C.丙二酸D.a-酮戊二酸E.琥珀酸【答案】C17、医学心理学的研究对象为A.心理活动的规律的学科B.人类行为的科学发展C.疾病的发生发展的规律D.影响健康的有关心理问题和行为E.疾病的预防和治疗的原则【答案】D18、增强子的作用特点是A.只作用于真核细胞中B.位于启动子上游C.有严格的专一性D.无需与转录因子结合就能促进转录E.作用无方向性【答案】E19、小儿腹泻是指A.病毒性肠炎B.喂养不当引起的腹泻C.细菌性痢疾D.多病原,多因素引起的腹泻为主的综合征E.肠道外感染引起的腹泻【答案】D20、关于消化性溃疡的治疗.正确的说法是A.需长期应用粘膜保护剂以降低溃疡复发率B.为降低复发率.需长期服用质子泵抑制剂C.只要内镜证实溃疡已经愈合.溃疡就不会复发D.根除幽门螺杆菌可以降低溃疡复发率E.有消化道出血的溃疡患者必须长期为此治疗【答案】D21、慢性肾衰患者易于感染的最主要的原因是A.免疫功能下降B.摄入减少C.白细胞数目减少D.低蛋白血症E.贫血【答案】A22、抑郁症情感障碍特点是老年期抑郁症情感障碍特点是A.情感低落B.情感淡漠C.情绪不稳D.情感低落伴有焦虑症状E.情感高涨【答案】D23、肝硬化时反映纤维化的试验是A.血清乳酸脱氢酶升高B.血清单胺氧化酶升高C.血浆白蛋白降低D.谷-草转氨酶升高E.血清胆固醇升高【答案】B24、关于霍乱肠毒素,下述正确的是A.为耐热外毒素B.为耐热内毒素C.由A和B亚单位组成D.A亚单位与细胞受体结合E.B亚单位进入细胞发挥毒性作用【答案】C25、41岁男性患者,前胸部被撞伤,X线检查可见左第9.10肋骨骨折,2天后突发休克,最可能的原因是A.气胸B.肝破裂C.脾破裂D.胃破裂E.结肠破裂【答案】C26、可通过ADCC作用介导细胞毒作用的细胞是A.浆细胞B.CTLC.B细胞D.巨噬细胞和B细胞E.巨噬细胞和T细胞【答案】B27、肠内营养并发症与输入速度及溶液浓度有关的是A.误吸B.腹胀.腹泻C.肠炎D.肠道细菌移位E.胆囊结石【答案】B28、高渗性脱水多见于如下情况,应除外A.腹泻伴呕吐B.昏迷和呼吸增快时补水不足C.口服或静脉补充过多的高渗液D.尿崩症E.使用大量脱水剂【答案】A29、他汀类药物的不良反应描述错误的是A.总体来讲,不良反应的发生较少B.可以引起横纹肌溶解症C.可见转氨酶升高D.具有耳毒性E.孕妇不宜使用【答案】D30、胃溃疡底部常见动脉内血栓机化.该处血栓形成的最主要机制是A.溃疡组织释出多量组织凝血酶原B.溃疡处动脉内膜炎致内膜粗糙C.溃疡处动脉血流缓慢D.溃疡处纤维化使动脉内血流不规则E.胃液促进凝血过程【答案】B31、急性心肌梗死早期最重要的治疗措施是A.抗心绞痛B.消除心律失常C.补充血量D.心肌再灌注E.增加心肌营养【答案】D32、末次月经第一日是2000年10月26日,计算预产期应是A.2001/8/1B.2001/8/2C.2001/8/3D.2001年8月4日E.2001/8/5【答案】B33、张某于1999年7月从某医学院专科毕业,张某可以A.在医疗.预防.保健机构中试用期满一年,参加执业医师资格考试B.在医疗.预防.保健机构中试用期满一年,参加执业助理医师资格考试C.在医疗.预防.保健机构中试用期满二年,参加执业助理医师资格D.取得执业助理医师执业证书后,在医疗.预防.保健机构中工作满一年,参加执业医师资格考试E.取得执业助理医师执业证书后,在医疗.预防.保健机构中试用期满一年,参加执业医师资格考试【答案】B34、平静呼气末肺内的气体量为A.肺活量B.时间肺活量C.补呼气量和潮气量D.补吸气量和余气量E.功能余气量【答案】E35、男性.32岁.3小时前从5米高处跌下.左腰部撞到石块上.当时无昏迷.现血压正常.感左腰部疼痛伴轻压痛.尿常规RBC+/HP.最可能的诊断是A.肾挫伤B.肾部分裂伤C.肾全层裂伤D.肾蒂断裂E.肾蒂伤伴输尿管损伤36、能反映某一心理测量工具对同一对象所得结果一致程度的是A.真实性B.有效性C.正确性D.效度E.信度【答案】E37、颈动脉体是A.压力感受器B.容量感受器C.化学感受器D.牵张感受器E.温度感受器【答案】C38、35岁女性,既往无肝病,2个月前因手术输血800ml近日出现腹胀,乏力,ALT200U/L,化验甲肝抗体(-),HBsAg(-),抗HBc(-),抗HBs(+),抗HCV(+),诊断应考虑A.术后引起中毒性肝炎B.甲型肝炎D.输血后肝炎E.急性丙型肝炎,输血所致【答案】E39、易导致主动脉瓣狭窄患者晕厥的情况为A.服用硫氮卓酮B.静坐休息C.剧烈运动D.睡眠E.窦性心率.心率70次/分【答案】C40、法洛四联症的几种畸形中最重要的是A.肺动脉狭窄B.室间隔缺损C.房间隔缺损D.主动脉骑跨E.右心室肥大【答案】A41、女性,42岁1944年胸部X线片据说有异常,但无症状。
大学英语(四)模拟题3
⼤学英语(四)模拟题3诚实考试吾⼼不虚,公平竞争⽅显实⼒,考试失败尚有机会,考试舞弊前功尽弃。
上海财经⼤学成⼈⾼等教育考试卷课程名称:⼤学英语(四)模拟试题3 姓名学号专业班级⼀. Choose the right word to complete each of the following sentences (每⼩题1分,共计20分): 1. He has been given the______ over the department. A. opportunity B. authority C. dilemma D. charge 2. Malicious gossip (恶意的闲话) may do a lot of harm to quite ______ people. A. innocent B. detached C. eloquent D. credible 3. When he was questioned about the missing ring, he firmly ______ that he had even seen it. A. refused B. asserted C. denied D. debated 4. Tom had been completely exhausted but felt greatly ______ after a meal and a rest. A. renewed B. refrained C. resumed D. refreshed 5. At last people are beginning to realize the necessity of ______ Nature. A. exchanging B. favouring C. adjusting D. preserving 6. The peasants made ______ about the ill-treatment by their landlords. A. complaints B. grumbles C. efforts D. attempts 7. The terrified sheep were ______ of the presence of the wolf. A. ignorant B. conscious C. incredible D. careless 8. The Society is ______ half a million pounds in aid of the flood victims. A. demanding for B. running for C. appealing for D. speaking for 9. There will be a performance of “Twelfth Night ” ______ this evening provided it doesn ’t rain. A. in the open B. in season C. in all D. in the way 10. The head of the delegation is in the lecture hall ______ a large audience. A. attracting B. addressing C. beckoning D. absorbing 11. To ______ the overall expenditure, every dollar should be spent carefully. A. cut out B. bring down C. put down D. slow down 12. It was really a miracle that he ______ a heart surgery. A. worked through B. passed through C. went through D. pulled through 13. It ’s a long trip and we ’ll have to ______ early tomorrow morning. A. take off B. go off C. start off D. put off 14. We found that piles of books ______ most of the space of his bedroom.A. took upB. deprived ofC. cut offD. took on15. Some players ’ deliberate violence during the football game ______ of the whole match.……………………………………………………………装订线…………………………………………………A. tore upB. grew outC. took controlD. made a mess16. ______ his arrival at the little town, Albert was invited to a party in his honour.A. WithB. ForC. UponD. By17. _______ that there is oil underground in this area, ______ not much.A. True; andB. It ’s true; butC. Although; butD. True; but18. We had been living in the centre of London for five years ______ my father decided to move to the suburbs.A. beforeB. whileC. after D, so that19. Because Jane is grown up, ______ she can stay out so late.A. but it isn ’t thatB. but it cannot follow thatC. it is not followed thatD. it doesn ’t follow that20. A research paper should be written in a formal style ______ in a personal one.A. better thanB. other thanC. rather thanD. less than⼆. Choose the word or phrase which is closest in meaning to the underlinedpart in each of the sentences (每⼩题1分,共计10分):1. Beth could identify her coat because it has large red buttons.A. recognizeB. proveC. defineD. claim2. William once proclaimed that music was his life. Everything he has in life he owes to his music.A. decidedB. declaredC. concludedD. mentioned3. I hope I can retain the memory of our trip to Sahara Desert.A. keepB. reserveC. lastD. value4. How are her chances of passing the exam?A. conditionsB. possibilitiesC. successesD. opportunities5. Both the advantages and the disadvantages of using foreign faculty in teaching positions have to be weighed.A. analyzedB. consideredC. demonstratedD. discussed6. Each leader had a solemn look as he signed the peace treaty.A. graveB. suspiciousC. earnestD. honest7. The new technique enables us to deep-freeze our produce when it is abundant.A. plentifulB. richC. ripeD. stable8. His original plan was to become a scientist but he didn ’t succeed.A. ordinaryB. primitiveC. traditionalD. earliest9. They debated for hours but could not agree on an answer.A. arguedB. examinedC. consultedD. fought10. The tank emitted an unpleasant odor.A. gave offB. injectedC. broke downD. retained三. Reading Comprehension(每⼩题1.5分,共计30分) :Read the following passages and then choose the right answer to each of thequestions given:Passage OneIs it possible to persuade mankind to live without war? War is an ancient institution which has existed for at least six thousand years .It was always had and usually foolish, but in the past thehuman race managed to live with it. Modern ingenuity has changed this. Either Man will abolish war, or war will abolish Man . For the present, it is nuclear weapons that cause the most serious danger, but bacteriological or chemical weapons may, before long, offer an even greater threat. If we succeed in abolishing nuclear weapons, our work will not be done .It will never be done until we have succeeded in abolishing war .To do this, we need to persuade mankind to look upon international questions in a new way, not as contest of force, in which the victory goes to the side which is most skilful in killing people, but by arbitration in accordance with agreed principles of law .It is not easy to change very old mental habits, but this is what must be attempted.There are those who say that the adoption of this or that ideology would prevent war .I believe this to be a big error .All ideologies are based upon dogmatic statements which are ,at best doubtful ,and at worst ,totally false .Their adherents believe in them so fanatically that they are willing to go to war in support of them .The movement of world opinion during the past few years has been very largely such as we can welcome .It has become a commonplace that nuclear war must be avoided .Of course very difficult problems remain in the world ,but the spirit in which they are being approached is a better one than it was some years ago. It has begun to be thought, even by the powerful men who decide whether we shall live or die, that negotiations should reach agreements even if both sides do not find these agreements wholly satisfactory .It has begun to be understood that the important conflict nowadays is not between different countries, but between Man and the atom bomb .1. What change does the author refer to in the sentence “Modern ingenuity has changed this”inparagraph 1?A. The fact that war has always been badB. The fact that man has managed to live with war so farC. The fact that war will abolish manD. The fact that war has existed for thousands of years .2. What does “our work” mean in the sentence “If we succeeded in abolishing nuclear weapons ,our work will not be done . ”in paragraph 1?A. Abolishing warB. Prohibiting new weaponsC. Reaching agreementsD. Making arbitration3. What is the author’s opinion of ideologies?A. He is an adherent of some modern ideologies.B. He does not believe ideologies can prevent war.C. He thinks that some ideologies might have effect.D. He has no doubt about the truth of ideologies.4. Which of following is a proper way to stop war?A. To destroy nuclear weaponsB. To let powerful men control the worldC. To improve modern weaponsD. To solve disputes through negotiation5. Which is the most severe threat to human beings?A. The conflicts among nationsB. The use of atomic bombC. The adoption of ideologiesD. The unsatisfactory agreementsPassage TwoA plan is needed for the World Trade Center site but not a big plan. There are times forbuilding Central Park, and there are times for remedial gardening. Lower Manhattan should not be remade according to some new grand vision. A framework needs to be put in place and some principles agreed on, and city life will take its course. “There is no rush” is a phrase often heard in discussion of the site. Actually, there is a rush, because there’s a reason why most cities struck by disaster-natural or man-made-generally end up rebuilding more or less what was there before. The reason is not a lack of imagination or will. Rather, while the planners and architects are thoughtfully discussing the options, decisions are being made on ground. There is infrastructure to be repaired, fire hydrants to be reconnected, materials to be transported, neighborhood to be knitted back together. And in the absence of a new plan, the old street pattern emerges by default .And soon it’s too late: the blank slate is no longer blank. Yes, the World Trade Center site offers a rare opportunity, as many have been pointed out, but the window of opportunity will not stay open long. There is no immediate pressure to build a lot of office space, since it’s as yet unclear how strong the demand will be and how the current upswing will affect New York. But other things can not wait. Subway tunnels will be rebuilt, stations will be reopened. Damaged infrastructure will be repaired. The destroyed electrical substation will have to be put back into operation. But doesn’t planning take time? Not as much as many people believe. Urban buildings are remarkably durable. We got it right at a long time ago which is why an old city, like London, Rome and Istanbul, often remains a delight.There appears to be agreement among most architects and planners about what should be done on the World Trade Center site. To begin with, New York should not simply replace the destroyed towers with new ones, even if they are lower. The 16-acre site is a so-called super block, the result of a misbegotten theory of 1960’s city planning that replacing streets and sidewalks with windswept plazas was a sign of progress. We have since learned rather, relearned that urban life thrives on streets and sidewalks. So we should put them back. Not that we need to recreate the pre-trade-center street grid in its entirety, but a north-south street would be useful, and so would at least one cross-town road. Fulton Street, for example, could be extended to Battery Park City. There is also an opportunity here to unravel some of the knotted transit issues that bedevil this part of Manhattan.6. From the passage, we can infer that the word “vision” in paragraph 1 means__________A. a beautiful siteB. the ability to seeC. conceptD. foresight7. What’s the most important reason for making the reconstructing decision?A. The old infrastructure.B. The connection with the neighborhoodC. The practical situationD. The effect of current economic upward trend8. Which of the following best reflects the main idea of paragraph 2?A. The blank slate is no longer blankB. The rare opportunity we haveC. The principle of good city buildingD. We must work out the proper plan to remark WTC.9. According to the passage, why is it useful to build a north-south road?A. Because there was a north-south road in Washington D.C..B. Because a north-south road can solve some traffic knots.C. Because it’s the result of the theory of 1960’s city planning.D. Because people need a north-south road to enjoy the beauty of Washington D.C..10. Which one can be the best title for the passage ?A. A Big Plan for the Rebuilding of WTC.B. No idea for the Rebuilding of WTC.C. What Should Be Done on the WTC Site.D. The New WTC Site Has Been Chosen.Passage ThreeRead the following passage and then answer the questions given:Last Thursday an ld gentleman came to our class to talk about the evils of smoking. We saw him take his gold wrist-watch off and lay it on the table. Slater and I can’t remember what he said about smoking because we had other things to think about. He finished when the bell rang for play-time, and the headmaster told us to go out. Slater happened to slip by the table…In the playground Slater showed me the watch. He put it on his wrist, and it looked lovely. I was wishing that I had been the one to slip by the table. The headmaster came out then with the old fellow. They walked about, looking around and talking all the time. After a bit the bell rang, and we got into our lines, ready to go in.The headmaster said, “I’ve got a little job for you boys. Our lecturer has just lost his watch in the playground. It’s happened before, he says—it just slips off his wrist. So look around for it, will you? See if you’re clever enough to find it. I’ve no doubt the boy who does so will get a useful reward.”We all walked about the playground, looking for the watch. And I wasn’t a bit surprised when Slater bent down as if he was picking something up. Then he hurried past me towards the old man. And the next minute there was Slater, all smiles, handing over the watch to the old fellow and hanging about for the reward. But the lecturer didn’t seem at all pleased. In fact he looked quite to put a knife in Slater’s heart until the headmaster burst out laughing. Then they both laughed. Slater told me afterwards that the old man hadn’t even said “Thank you for the watch.”The thing that puzzled us most of all was that Slater didn’t get any reward.11. What might the two boys be doing during the lecture?12. Why did the story-teller wish that he had been the one to slip by the table?13. When Slater “bent down”, what was he trying to do?14. What was the purpose of the promised reward?15. What do you think made the headmaster burst out laughing?Passage FourRead the following passage and then fill in the blanks to finish each of the sentences: Time and how we experience it have always puzzled us. Physicists have created fascinating theories, but their time is measured by a pendulum and is not psychological time, which leaps with little regard to the clock or calendar. As someone who understood the distinction observed, “When you sit with a nice girl for two hours, it seems like a minute, but when you sit on a hot stove, a minute seems like two hours.They also note that the more time is structured with schedules and appointments, the more rapidly it seems to pass. For example, a day at the office flies compared with a day at the beach. Since most of us spend fewer days at the beach and more at the office as we age, an increase in structured time could well be to blame for why time seems to speed up as we grow older.Expectation and familiarity also make time seem to fly more rapidly. Almost all of us have had the experience of dr iving somewhere we’ve never been before. S urrounded by unfamiliar scenery, with no real notion of when we’ll arrive, we experience the trip as lasting a long time. But the return trip, although exactly as long, seems to take far less time. The novelty of the outward journey has become routine. Thus taking a different route on occasions can often help slow the clock.When days become as identical as beads on a string, they blend together, and even months become a single day. To counter this, try to find ways to interrupt the structure of your day--to stoptime, so to speak.Learning something new is another way to slow the passage of time. One of the reason the days of our youth seem so full and long is that these are the days of learning and discovery.16. The passage is meant to explain why time flies and how to ____________.17. According to the passage, when people live an identical and routine life, time seems to__________.18. The quotation in the first paragraph is used to indicate __________ between physical time andpsychological time .19. The learning of something __________ does not make time seem to flow more rapidly .20. Near the end of the fourth paragraph, the word “novelty ” could be best replaced by ________.四.Identify the underlined part which is not correct in each of the followingsentences (每⼩题1分,共计10分):1. The two brothers have not met their parents since more than a year.A B C D2. Susan is always absent-minded while operating the machine: she ’ll have to pay it.A B C D3. Tim ’s letter shows that he loves his new job and takes pride with himself and his work.A B C D4. They were well aware of that they had to spare no efforts to keep the boat going, or it would be frozen in.A B C D5. It is still unknown why Joe withdrew the competition at the last minute. He could have won the first place.A B C D6. It was very late to save the drowning boy as he had gone down for the third time.A B C D7. I can ’t help to think it would be fun to play such an exciting game with them.A B C D8. John said his mother would buy him a five-speeds rating bicycle for his sixteenth birthday.A B C D9. By reading the directions carefully, some mistakes in the examination could have been avoided.A B C D 10. Of the two lectures, the first was by far the best, partly because the person who delivered it had such a pleasant A B C D voice.五.Complete each of the following sentences with the proper word derived fromthe one given in the brackets (每⼩题1分,共计10分):1. As neither ______ nor labor would give in the union organized a strike. (manage)2. I give the TV set a thorough ______ before I bought it. (inspect)3. Hans went to his dentist for ______ because of a bad toothache. (consult)4. Playing a game of chess with me every evening is one of my father ’s favourite ______. (relax)5. Some chemical substances are ______ to light. (sense)6. It is ______ that such a great talent died so young. (regret)7. Shelley is an ______ woman writer. (imagine)8. I am a ______ man and I ’d like to give you some advice.(practice) 9. The enemy soldier was caught ______.(live) 10. This is my advice; don ’t be too ______ with strangers.(confide)六. Use the verb in brackets to form an appropriate phrasal verb and complete the sentences with it (每⼩题1分,共计10分):1. Do you think her beauty could ______ her stupidity? (make)2. He stopped reading and ______ the book. (put)3. The enemy ______ as our army advanced. (fall)4. The man sent to prison but the boy ______ with a warning. (get)5. He has _____ a place for himself in the world of politics. (cut)6. I doubt if she ’ll ______ the winter. (live)7. Her late arrival ______ our plans. (mess)8. They will ______ the station at seven sharp. (pull)9. Don ’t ______ yourself ______ his future. (concern)10. I managed to ______ his insult. (pass)七.Read the following passage and choose the best answer for each blank(每⼩题0.5分,共计10分):In social life, time plays a very important part. In the United States, guests tend to feel they are not ____1_____ regarded if the invitation to a dinner party is extended only three or four days_____2___ the party date, _____3____ this is not true in all countries. In other areas of the world, it may be considered foolish to make an appointment too far in ___4____ because plans which are made for a date more than a week away tend to be ____5_____.The ___6__of time differ in different parts of the world ____7___, misunderstandings arises between people from cultures that_____8_____ time differently. Promptness is much ___9___ in American life, for example, if people are not prompt, they may be regarded as impolite or not fully_____10______. In the U.S. no one would think of _____11_____ a business associate waiting for an hour, it would be too impolite. When ____12_______ meet, a person who is five minutes late is____13_____ to make a short apology. If he is less than five minutes late, he will say a few words of ____14____, though perhaps he will not ____15_____ the sentence. To Americans, forty minutes of waiting is the ___16______ of the “insult period”. No matter ___17___ is said in apology, there is little that can remove the ___18___ done by an hour’s wait._____19_____ in some other countries, a forty minute waiting period was not unusual. Instead of being the very end of the ____20_____ waiting scale, if was just the beginning.1. A) chiefly B) greatly C) largely D) highly2. A) in B ) after C) at D) before3. A) Then B) But C) So D) Also4. A) advance B) ahead C) front D) time5. A) forgotten B) neglected C) mistaken D) overlooked6. A) means B) meanings C) significance D) senses7. A) Even B) Moreover C) Thus D) Ever8. A) treat B) deal C) consider D) cope9. A) treasured B) valued C) expended D) priced10. A) acceptable B) responsible C) reasonable D) accountable11. A) retaining B) preventing C) getting D) keeping \12. A) equivalents B) same C) parallels D) equals13. A) expected B) wanted C) asked D) hoped14. A) description B) explanation C) exposition D) excuse15. A) achieve B) fulfill C) complete D) accomplish16. A) period B) limit C) term D) beginning17. A) how B) who C) what D) which18. A) destruction B) violation C) damage D) breakage19. A) So B) If C) Yet D) Even20. A) allowable B) conceivable C) agreeable D) receivable。
模拟试题三
模拟试题三一、单选题1、依据风险产生的行为来分类。
个人行为引起的风险称为( B )A、纯粹风险B、特定风险C、基本风险D、投机风险2、根据风险理论,风险的特征主要包括( A )等。
A、不确定性和客观性B、确定性和主观性C、自然性和特殊性D、不确定性和商品性3、风险管理的目标有不同的内容,减少损失的危害程度目标属于( B )A、风险管理的损失前目标B、风险管理的损失后目标C、风险管理的财务目标D、风险管理的技术目标4、当某企业决定对其风险管理采用自留还是转移方式时不需要考虑的因素是( D )A、风险发生的频率B、风险损失的大小C、本公司的财务承受能力D、风险发生的具体时间5、在风险事故发生前,为了消除或减少可能引起损失的各种因素而采取一些具体措施是风险管理技术中的一种方式。
该方式可称为( B )A、放弃B、预防C、避免抑制6、商业保险与社会保险差异之一是( A )A、经营主体不同B、保险对象完全不同C、均不体现互助性质D、均以不缴纳一定保费为条件7、从保险科学性角度看,保险费率的厘定和保险准备金提取的依据是 (D )A、国家管理的要求B、社会平均利润 C 、经济效益的核算 D 、科学的数理计算8、保险人将其承担的保险业务,部分或全部转移给其他保险人的保险叫做( A )A、再保险B、重复保险C、共同保险D、定额保险9、保险在经营过程中可以收集企业和个人的履约行为记录,为社会信用体系的建立和管理提供重要的信息资料来源,实现社会信用资源的共享。
从保险社会管理功能中各个管理内容看,这体现的是( C)A、社会道德管理B、社会关系管理C、社会信用管理D、社会风险管理10、反映一个国家保险的普及程度和保险业的发展水平常用的指标是 (A )A、保险密度B、保险深度C、保险收入D、市场集中者11、人寿保险合同中,保险人给付保险金的最高限额是( A )A、合同约定的保险金额B、被保险人的收入损失C、政府机构规定的金额D、被保险人的实际损失12、按照我国保险法的规定,受益人是人身保险合同中享有保险金请求权的人。
大学英语(三)》模拟试题三
《大学英语(三)》模拟试题三1、- May I speak to Mr. White?- I'm afraid he isn't in. This is his secretary speaking. Can I help you?- ____B____A.Oh, what's a pity!B.Thanks, would you please take a message for me?C.I don't think so.D.Well, I look forward to hearing from you.2、- Would you be able to go to the party? -___B_____.A.I don't expectB.I'm afraid notC.I don't think soD.I believe not3、- Thank you ever so much for the present you sent me. - ___D_____.A.Please don't say soB.It's not so good, I thinkC.No, thanksD.I'm glad you like it4、- Can I help with your luggage? - __A______A.No, thanks. I can manage it.B.No, why? I can do.C.No, not necessary.D.No, you needn't.5、- I'm sorry I broke your mirror. - Oh, really? __A______.A.It doesn't matterB.Don't be sorryC.Not at allD.It's OK with me6、- Well done, Jim. You did very well in the high jump. - ___C_____.A.I'm glad to hear thatB.That's right.C.Thank youD.The same to you7、- Do you think I can borrow your bike for a few hours? - ___B_____A.I'm afraid you can.B.I'm sorry, but I really need it this afternoon.C.Yes, I don't think so.D.I'll think about it later.8、- Can I get you a cup of tea? - ____A____.A.That's very kind of youB.With pleasureC.You can, pleaseD.Thank you for the tea9、- How often do you eat out? -Well, ___B_____, but usually once a week.A.have no ideaB.it dependsC.as usualD.generally speaking10、- Jim, please don't put your head out of the window on the bus. It's dangerous! - ____B____A.Good idea.B.Sorry, I won't do it again.C.It doesn't matter.D.It's good.第二部分:阅读理解(共10小题,每小题2分,满分20分)此部分共有2篇短文,在第一篇短文后有5个正误判断题,从每题后的两个选项中选出正确答案;在第二篇短文后有5个问题。
模拟试题_1-3
CPP程序设计模拟考试 1--第3套试卷1.C++流中重载的运算符>>是一个(____)A.用于输出操作的非成员函数B.用于输入操作的非成员函数C.用于输出操作的成员函数D.用于输入操作的成员函数正确答案:【B】分值:【1】2.有如下函数模板:template T souare(T x) { return x*x; }基中T是(____)A.函数形参B.函数实参C.模板形参D.模板实参正确答案:【C】分值:【1】3.有如下程序:#includeusing namespace std;class point {public:static int number;public:point(){ number++; }~point(){ number-; }};int point::number=0;void main(){point *ptr;point A,B;{point *ptr_point=new point[3];ptr=ptr_point;}point C;cout<<point::number<<endl;delete []ptr;}运行时输出的结果是(____)A.3B.4C.6D.7正确答案:【C】分值:【1】4.下列字符串中可以用C++语言标识符的是(____)A._1234B.foo~~barC.virtuaD.34var正确答案:【A】分值:【1】5.有如下程序:#includeusing namespace std;class MyClass{public:MyClass(int i=0){cout<<1;}MyClass(const MyClass& x){cout<<2;}MyClass& operator=(const MyClass& x){ cout<~MyClass(){cout<<4;}};int main(){MyClass obj1(1),obj2(2),obj3(obj1);return 0:}运行时的输出结果是(____)(____)A.112444B.11114444C.121444D.11314444正确答案:【A】分值:【1】6.有如下程序:#includeusing namespace std;class MyClass{public:MyClass(int x):val(x){}void Set(int x){val=x;}void Print()const{cout<<"val="<<val<<'\t';}private:int val;};int main(){const MyClass obj1(10);MyClass obj2(20);obj1.Print(); //语句 1obj2.Print(); //语句 2obj1.Set(20); //语句 3obj2.Set(30); //语句 4return 0;}其主函数中错误的语句是(____)A.语句 1B.语句 2C.语句 3D.语句 4正确答案:【C】分值:【1】7.有如下类定义:class XX{int xdata;public:XX(int n=0) : xdata (n) { }};class YY : public XX{int ydata;public:YY(int m=0, int n=0) : XX(m), ydata(n) { }};YY类的对象包含的数据成员的个数是(____)A.1B.2C.3D.4正确答案:【B】分值:【1】8.有如下程序#includeusing namespace std;class Publication{ //出版物类char name[30];public:Publication(char *name="未知名称"){strcpy(this->name,name);}const char * getName()const{ return name; }virtual const char * getType()const{ return "未知类型";}};class Book: public Publication{ //书类public:Book(char *name): Publication(name){}virtual const char * getType()const{ return "书";}};void showPublication( Publication &p){cout<<p.getType()<<":"<<p.getName()<<endl;}int main(){Book book("精彩人生");showPublication(book);return 0;}运行时的输出结果是(____)A.未知类型:未知名称B.未知类型:精彩人生C.书:未知名称D.书:精彩人生正确答案:【D】分值:【1】9.关于new运算符的下列描述中,错误的是(____)A.它可以用来动态创建对象和对象数组B.使用它创建的对象或对象数组可以使用运算符delete删除C.使用它创建对象时要调用构造函数D.使用它创建对象数组时必须指定初始值正确答案:【D】分值:【1】10.C++语言建立类族是通过(____)A.类的嵌套B.类的继承C.虚函数D.抽象类正确答案:【B】分值:【1】11.在下列运算符中,(____)优先级最低。
2023-2024学年安徽省高考数学仿真模拟试题卷(三模)含解析
2023-2024学年安徽省高考数学仿真模拟试题卷(三模)一、单项选择题: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.已知复数0z ≠,则“1z =”是“1R z z +∈”的()条件.A.充分不必要B.必要不充分C 充要 D.既不充分也不必要【正确答案】A【分析】当1z ==时,即221a b +=,12R z a z+=∈,充分性;取2z =,则15R 2z z +=∈,2z =,不必要,得到答案.【详解】设i z a b =+,,R a b ∈,当1z ==时,即221a b +=,2211i i i 2R i a b z a b a b a z a b a b-+=++=++=∈++,充分性;取2z =,则15R 2z z +=∈,2z =,不必要性.综上所述:“1z =”是“1R z z +∈”的充分不必要条件.故选:A2.若函数sin cos y a x b x =+(其中,a b R ∈,且,0a b >)可化为)y x ϕ=-,则ϕ应满足条件()A.tan ba ϕ=B.cos ϕ=C.tan a bϕ=D.sin ϕ=【正确答案】C【分析】先逆用两角和的正弦公式进行化简,再结合诱导公式,得到22k πϕθπ-=+,进而求得tan a bϕ=.【详解】sin cos y a x b x=+x x ⎫=+⎪⎭)x θ=+,其中tan baθ=,函数sin cos y a x b x =+(其中,a b R ∈,且,0a b >)可化为)y x ϕ=-,∴()sin()cos x x θϕ+=-,即sin()sin 2x x πθϕ⎛⎫+=+- ⎪⎝⎭,∴22k πϕθπ-=+()k Z ∈,∴()tan tan 22k πϕθπ⎛⎫-=+⎪⎝⎭,即cot tan ϕθ=,∴1tan tan a b ϕθ==,故选:C.本题考查了两角和的正弦公式以及诱导公式的应用,意在考查学生对这些知识的理解掌握水平,需熟记公式,属于基础题.3.某种品牌手机的电池使用寿命X (单位:年)服从正态分布()()24,0N σσ>,且使用寿命不少于2年的概率为0.9,则该品牌手机电池至少使用6年的概率为()A.0.9B.0.7C.0.3D.0.1【正确答案】D【分析】根据正态分布的对称性求解即可.【详解】由题得:()20.9P x ≥=,故()20.1P x <=,因为6242+=,所以根据对称性得.()()620.1P x P x ≥=<=故选:D.4.中国某些地方举行婚礼时要在吉利方位放一张桌子,桌子上放一个装满粮食的升斗,斗面用红纸糊住,斗内再插一杆秤、一把尺子,寓意为粮食满园、称心如意、十全十美.下图为一种婚庆升斗的规格,把该升斗看作一个正四棱台,忽略其壁厚,则该升斗的容积约为()39.6,1L 1000cm ≈=,参考公式:(13V S S h 下上棱台=++⋅)A.1.5LB.2.4LC.5.0LD.7.1L【正确答案】B【分析】由勾股定理算出高h ,即可由公式求体积.【详解】由题意,正四棱台中,设棱台的高为h ,则22222202112239236711.591.752224h 骣骣琪琪琪=-=-==琪琪琪桫桫桫,故(223120112371.2cm 2.4L 3V 棱台=⨯+≈≈.故选:B5.已知一个古典概型的样本空间Ω和事件A ,B 如图所示.其中()()()()12,6,4,8,n n A n B n A B Ω===⋃=则事件A 与事件B ()A.是互斥事件,不是独立事件B.不是互斥事件,是独立事件C.既是互斥事件,也是独立事件D.既不是互斥事件,也不是独立事件【正确答案】B【分析】由()4n A B = 可判断事件是否为互斥事件,由()()()P AB P A P B =可判断事件是否为独立事件.【详解】因为()12,()6,()4,()8n n A n B n A B Ω==== ,所以()2n A B = ,()4n A B = ,()8n B =,所以事件A 与事件B 不是互斥事件,所以()41123P AB ==,()()68112123P A P B =⨯=,所以()()()P AB P A P B =,所以事件A 与事件B 是独立事件.故选:B.6.已知定义在R 上的函数()f x 满足()()2f x f x =--,且函数()1f x +是偶函数,当[]1,0x ∈-时,()21f x x =-,则20235f ⎛⎫= ⎪⎝⎭()A.925B.1625C.3425D.4125【正确答案】C【分析】由函数(1)f x +是偶函数,可得函数()f x 的图像关于直线1x =对称,从而有()(2)f x f x -=+,再结合()2()f x f x =--可得函数()f x 的周期为4,然后利用周期和()2()f x f x =--将20235化到[]1,0-上即可求解.【详解】因为函数(1)f x +是偶函数,所以(1)(1)f x f x -=+,所以()(2)f x f x -=+,因为()2()f x f x =--,所以()(2)2f x f x ++=,所以(2)(4)2f x f x +++=,所以()(4)f x f x =+,所以函数()f x 的周期为4,所以33()(101204)()53525f f f =⨯+=,因为233334()2(21()55525f f ⎡⎤=--=---=⎢⎥⎣⎦,所以202334525f ⎛⎫=⎪⎝⎭.故选:C.7.已知椭圆E :()222210x y a b a b+=>>的两条弦AB CD ,相交于点P (点P 在第一象限),且AB x ⊥轴,CD y ⊥轴.若:::1:3:1:5PA PB PC PD =,则椭圆E 的离心率为()A.5B.105C.5D.5【正确答案】B【分析】设(),,P m n PA t =,进而得,,,A B C D 的坐标,进而根据对称性得()()3,,2,2A t t C t t ,再代入椭圆方程整理得2235b a =,最后求解离心率即可.【详解】解:设(),,P m n PA t =,则()(),,,3A m n t B m n t +-,()(),,5,C m t n D m t n +-,由题知,A B 关于x 轴对称,,C D 关于y 轴对称,所以30n t n t ++-=,50m t m t ++-=,即n t =,2m t =,所以()()3,,2,2C t t A t t ,所以2222222291441t t a b t t a b ⎧+=⎪⎪⎨⎪+=⎪⎩,即22229144a b a b +=+,所以2253a b=,即2235b a =,所以椭圆E的离心率为5e ===.故选:B8.已知0a b >>,1ab =,设2ab x =,2log ()y a b =+,1z a b=+,则log 2x x ,log 2y y ,log 2z z 的大小关系为()A.log 2log 2log 2x y z x y z >>B.log 2log 2log 2y z x y z x >>C.log 2log 2log 2x z y x z y >>D.log 2log 2log 2y x z y x z>>【正确答案】B【分析】由已知0a b >>,1ab =,可得1=a b,且a >1>b >0,不难判断x ,y ,z 的大小关系01x y z <<<<,再根据对数运算法则及对数函数性质可得大小关系.【详解】∵a >b >0,1ab =,∴可得1=a b ,且a >1>b >0,∴11222a ab x a ==<⋅,222log ()log log 21y a b =+>==,122z a a a a b=+=+=>,又()()22log (1)z y a a b f a a -=-+=>,()120f a a b'=-+>,()f a 单调递增,()()212log (1)0f a f b =-+>>,∴z y ->0,∴01x y z <<<<,∵log 2=log 21x x x +,log 2log 21y y y =+,log 2=log 2+1z z z ,根据对数函数性质可得log 2log 2log 2x z y <<,∴log 2log 2log 2y z x y z x >>.故选B .本题考查对数函数的性质及运算定律,涉及基本不等式和不等式性质的应用,属于综合题.二、多项选择题:本题共4小题,每小题5分,共20分.在每小题给出的四个选项中,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.在9x⎛+ ⎝的展开式中,下列结论正确的是()A.第6项和第7项的二项式系数相等B.奇数项的二项式系数和为256C.常数项为84D.有理项有2项【正确答案】BC【分析】根据二项式展开式的特征,即可结合选项逐一求解.【详解】9x⎛⎝的展开式中共有10项,由二项式系数的性质可得展开式中的第5项和第6项的二项式系数相等,故A 错误;由已知可得二项式系数之和为92,且展开式中奇数项的二项式系数和与偶数项的二项式系数和相等,所以奇数项的二项式系数和为82256=,故B 正确;展开式的通项为139922199C C ,09,N rr r r rr T x x x r r ---+⎛⎫==≤≤∈ ⎪⎝⎭,令3902r -=,解得6r =.故常数项为6399C C 84==,故C 正确;有理项中x 的指数为整数,故0r =,2,4,6,8,故有理项有5项,故D 错误.故选:BC10.下列说法正确的是()A.若直线a 不平行于平面α,a α⊄,则α内不存在与a 平行的直线B.若一个平面α内两条不平行的直线都平行于另一个平面β,则αβ∥C.设l ,m ,n 为直线,m ,n 在平面α内,则“lα⊥”是“l m ⊥且l n ⊥”的充要条件D.若平面α⊥平面1α,平面β⊥平面1β,则平面α与平面β所成的二面角和平面1α与平面1β所成的二面角相等或互补【正确答案】AB【分析】对于选项ABC ,可根据线面平行的判定定理,面面平行的判定定理和线面垂直的判定定理进行判定;对于选项D ,可在长方体中寻找特殊平面进行排除.【详解】选项A ,若存在直线,则由直线和平面平行的判定定理知直线a 与平面α平行,与条件相矛盾,故选项A 正确;选项B ,由面面平行的判定定理可知选项B 正确;选项C ,当直线,m n 不相交时,由线面垂直的判定定理知:l m ⊥且l n ⊥时,得不到l α⊥,故选项C 错误;选项D ,当11//αβ,αβ⊥时,可满足题设条件,此时平面α与平面β所成的二面角为90︒,平面1α与平面1β所成的二面角为0︒,故选项D 错误.故选:AB11.定义在R 上的函数()()π2sin N 3f x x ωω*⎛⎫=+∈ ⎪⎝⎭满足在区间ππ,66⎛⎫- ⎪⎝⎭内恰有两个零点和一个极值点,则下列说法不正确...的是()A.()f x 的最小正周期为π2B.将()f x 的图象向右平移π3个单位长度后关于原点对称C.()f x 图象的一个对称中心为π,06⎛⎫ ⎪⎝⎭D.()f x 在区间π,06⎛⎫- ⎪⎝⎭上单调递增【正确答案】ABC【分析】根据题意可求出ω的值,从而可得到()f x 的解析式,再根据解析式逐项分析即可.【详解】依题可知π23T T <<,于是36ω<<,于是πππ0263ππ3ππ632ωω⎧-≤-+<⎪⎪⎨⎪<+≤⎪⎩,∴45ω<≤,又N ω*∈,∴5ω=,∴()π2sin 53f x x ⎛⎫=+ ⎪⎝⎭,对于A ,由2π2π==5T ω,则()f x 的最小正周期为25π,故A 错误;对于B ,因为ππ4π4π2π2sin 52sin 52sin 52π2sin 533333x x x x ⎡⎤⎛⎫⎛⎫⎛⎫⎛⎫-+=-=-+=+ ⎪ ⎪ ⎪ ⎪⎢⎥⎝⎭⎝⎭⎝⎭⎝⎭⎣⎦,所以将()f x 的图象向右平移π3个单位长度后得()2π2sin 53g x x ⎛⎫=+ ⎪⎝⎭,则()2π02sin 3g ⎛⎫== ⎪⎝⎭,所以()g x 不关于原点对称,故B 错误;对于C ,由π7π2sin 166f ⎛⎫⎛⎫==- ⎪ ⎪⎝⎭⎝⎭,所以π,06⎛⎫ ⎪⎝⎭不是()f x 图象的一个对称中心,故C 错误;对于D ,由π,06x ⎛⎫∈- ⎪⎝⎭,则πππ5,323x ⎛⎫+∈- ⎪⎝⎭,所以()f x 在区间π,06⎛⎫- ⎪⎝⎭上单调递增,故D 正确.故选:ABC .12.平面内到两定点距离之积为常数的点的轨迹称为卡西尼卵形线,它是1675年卡西尼在研究土星及其卫星的运行规律时发现的,已知在平面直角坐标系xOy 中,(2,0)M -,(2,0)N ,动点P 满足||||5PM PN ⋅=,则下列结论正确的是()A.点P 的横坐标的取值范围是⎡⎣B.OP 的取值范围是[]1,3C.PMN 面积的最大值为52D.PM PN +的取值范围是⎡⎤⎣⎦【正确答案】BC【分析】设出点P 的坐标,列出方程并化简整理,放缩解不等式判断A ;利用几何意义并结合求函数值域判断B ;利用三角形面积公式计算判断C ;取点计算判断D 作答.【详解】设点(,)P x y ,依题意,2222[(2)][(2)]25x y x y ++-+=,对于A ,2222222225[(2)][(2)](2)(2)(4)x y x y x x x =++-+≥+-=-,当且仅当0y =时取等号,解不等式22(4)25x -≤得:33x -≤≤,即点P 的横坐标的取值范围是[3,3]-,A 错误;对于B ,2222[(4)4][(4)4]25x y x x y x +++++-=,则224x y ++=显然209x ≤≤,因此||[1,3]OP ==,B 正确;对于C ,PMN 的面积115||||sin ||||222S PM PN MPN PM PN =∠≤=,当且仅当90MPN ∠= 时取等号,当90MPN ∠= 时,点P 在以线段MN 为直径的圆224x y +=上,由222244x y x y ⎧+=⎪⎨++=⎪⎩解得39454x y ⎧=±⎪⎪⎨⎪=±⎪⎩,所以PMN 面积的最大值为52,C 正确;对于D ,因为点(3,0)在动点P 的轨迹上,当点P 为此点时,516PM PN +=+=,D 错误.故选:BC易错点睛:求解轨迹方程问题,设出动点坐标,根据条件求列出方程,再化简整理求解,还应特别注意:补上在轨迹上而坐标不是方程解的点,剔出不在轨迹上而坐标是方程解的点.三、填空题:本题共4小题,每小题5分,共20分.13.已知()()()()1,2,3,4,2,2,3,5A B C D --,则AB 在CD上的投影为______.【正确答案】2105【分析】先求AB ,CD,再求AB ,CD ,AB CD ⋅ ,利用向量夹角余弦公式求夹角,再由投影向量的模长公式求解.【详解】因为()()()()1,2,3,4,2,2,3,5A B C D --,所以()2,2AB =,()1,3CD =- ,所以AB ==,CD == ,264AB CD ⋅=-+= ,设向量AB 与CD 的夹角为θ,5cos 5|||AB CD AB CD θ⋅===,那么AB 在CD上的投影为5210cos 55AB θ==|故答案为.514.已知圆柱的两个底面的圆周都在表面积为20π的球面上,则该圆柱的侧面积的最大值为__________.【正确答案】10π【分析】先求出半径,根据条件列出圆柱底面半径和母线的关系,即可得到侧面积表达式,然后用基本不等式即可求解最大值.【详解】解:设球的半径为R ,圆柱的底面半径为r ,母线为l ,由题意可知,24π20πR R =⇒=,又圆柱的两个底面的圆周都在球面上,则满足22252l r R ⎛⎫+== ⎪⎝⎭,而圆柱的侧面积2πS rl =,0l >,因为22222l l r r lr ⎛⎫+≥⋅= ⎪⎝⎭,当且仅当2l r =,即102r =,l =时等号成立,所以5lr ≤,2π10πS rl =≤,故10π15.已知实数a b c d ,,,成等比数列,且函数()ln 2y x x =+-,当x b =时取到极大值c ,则ad 等于______.【正确答案】1-【分析】通过导函数,求出极值,再利用等比数列的性质,即可求解.【详解】令()()ln 2f x x x =+-,则函数()()ln 2f x x x =+-的定义域为()2,-+∞,导函数11()122x f x x x --'=-=++,当()2,1x ∈--时,()0f x '>,函数()f x 在()2,1--上单调递增,当()1,x ∈-+∞时,()0f x '<,函数()f x 在()1,-+∞上单调递减,所以当=1x -时,函数()ln 2y x x =+-取极大值,极大值为1,所以1,1b c =-=,故bc 1=-,又a b c d ,,,成等比数列,所以1ad bc ==-,故答案为.1-16.如图为一个开关阵列,每个开关只有“开”和“关”两种状态,按其中一个开关1次,将导致自身和所有相邻(上、下相邻或左、右相邻)的开关改变状态.若从这十六个开关中随机选两个不同的开关先后各按1次(例如:先按()1,1,再按()4,4),则()2,3和()4,1的最终状态都未发生改变的概率为______.()1,1()1,2()1,3()1,4()2,1()2,2()2,3()2,4()3,1()3,2()3,3()3,4()4,1()4,2()4,3()4,4【正确答案】41120【分析】根据开关阵列的性质,结合古典概型的概率公式进行求解即可.【详解】要使得()2,3的状态发生改变,则需要按()1,3,()2,2,()2,3,()2,4,()3,3这五个开关中的一个,要使得()4,1的状态发生改变,则需要按()3,1,()4,1,()4,2这三个开关中的一个,所以要使得()2,3和()4,1的最终状态都未发生改变,则需按其他八个开关中的两个或()1,3,()2,2,()2,3,()2,4,()3,3中的两个或()3,1,()4,1,()4,2中的两个,故所求概率为222853216A A A 41A 120++=.故41120关键点睛:根据开关阵列的判断出:要使得()2,3和()4,1的最终状态都未发生改变,则需按其他八个开关中的两个或()1,3,()2,2,()2,3,()2,4,()3,3中的两个或()3,1,()4,1,()4,2中的两个,是解题的关键.四、解答题:共70分.解答应写出文字说明,证明过程或演算步骤.17.已知{}n a 为等差数列,且11a =,()6423a a a =-.(1)求数列{}n a 的通项公式;(2)若数列{}n b 满足:()*12na nb n ⎛⎫=∈ ⎪⎝⎭N ,{}n b 的前n 项和为n S ,求127128n S ≤成立的n 的最大值.【正确答案】(1)n a n =(2)7【分析】(1)代入公式求出公差即可求通项公式;(2)代入等比数列的前n 项和公式即可.【小问1详解】设数列{}n a 的公差为:d ,()6423a a a =-,11a =∴()111533a d a d a d +=+--,∴1d =.∴()1111n a a n d n n =+-=+-=,即n a n =.【小问2详解】()*12na nb n ⎛⎫=∈ ⎪⎝⎭N ,nan =,∴12nn b ⎛⎫= ⎪⎝⎭,∴数列{}n b 为等比数列,所以11112211212n n nS ⎛⎫- ⎪⎝⎭==--由127128nS ≤,即112712128n -≤,化简得:111282n ≤,解得17n ≤≤,()*n ∈N ,所以,要使127128nS ≤成立的n 的最大值为:7.18.已知函数()()sin 0,π2,0f x M x M ϕωϕω⎛⎫>>⎭<⎪⎝=+)的部分图象如图所示.(1)求函数()f x 的解析式;(2)在ABC 中,角,,A B C 的对边分别是,,a b c ,若()2cos cos a c B b C -=,求2f A ⎛⎫ ⎪⎝⎭的取值范围.【正确答案】(1)()π26f x x ⎛⎫=+⎪⎝⎭;(2)1,12⎛⎤⎥⎝⎦.【分析】(1)利用最大值和最小值,求出M ,通过函数的周期求出ω,由经过π,16⎛⎫⎪⎝⎭,求出φ,即可求出()f x 的解析式;(2)利用()2cos cos a c B b C -=,结合正弦定理,求出cos B ,利用函数的解析式2f A ⎛⎫ ⎪⎝⎭的表达式,通过A 的范围求出函数的取值范围.【小问1详解】由图象知函数()f x 的最大值为1,最小值为1-,所以1M =由图象知函数()f x 的周期5ππ4π126T ⎛⎫=-=⎪⎝⎭,所以ω2=,将点π,16⎛⎫⎪⎝⎭代入解析式得πsin φ13⎛⎫+= ⎪⎝⎭,因为πφ2<,所以πφ6=,所以()π26f x x ⎛⎫=+ ⎪⎝⎭.【小问2详解】由()2cos cos a c B b C -=得:()2sin sin cos sin cos A C B B C -=,所以()2sin cos sin A B B C =+,2sin cos sin A B A =,因为()0,πA ∈,所以sin 0A ≠,所以1cos 2B =,π3B =,2π3A C +=,由(1)πsin 26A f A ⎛⎫⎛⎫=+⎪ ⎪⎝⎭⎝⎭,又2π03A <<,ππ5π666A <+<,所以π1sin 62A ⎛⎫⎛⎤+∈ ⎪ ⎥⎝⎭⎝⎦,所以1,122A f ⎛⎫⎛⎤∈⎪ ⎥⎝⎭⎝⎦.所以2f A ⎛⎫⎪⎝⎭的取值范围为1,12⎛⎤⎥⎝⎦.19.如图,已知多面体EABCDF 的底面ABCD 是边长为2的正方形,EA ⊥底面ABCD ,//FD EA ,且112FD EA ==.(1)记线段BC 的中点为K ,在平面ABCD 内过点K 作一条直线与平面ECF 平行,要求保留作图痕迹,但不要求证明;(2)求直线EB 与平面ECF 所成角的正弦值.【正确答案】(1)答案见解析(2)6【分析】(1)根据线面平行性质定理,可得所作直线必平行面ABCD 与面ECF 的交线,因此先作两平面交线,再在平面ABCD 内作交线的平行线.(2)建立空间直角坐标系,求直线EB 的方向向量和平面ECF 的法向量,利用向量夹角公式求直线EB 与平面ECF 所成角的正弦值.【小问1详解】延长,AD EF ,设其交点为N ,连接CN ,则CN 为平面ABCD 与平面ECF 的交线,取线段CD 的中点M ,连接KM ,直线KM 即为所求.证明如下:延长,AD EF ,设其交点为N ,连接CN ,则CN 为平面ABCD 与平面ECF 的交线,因为//FD EA ,所以FDA EAN ∽,又12FD EA =,所以12ND NA =,所以ND DA BC ==,又//ND BC ,所以四边形BCND 为平行四边形,所以//CN BD ,取CD 的中点M ,连接KM ,∵,K M 分别为,BC CD 的中点,∴//KM BD ,∴//KM CN .∵CN ⊂平面EFC ,KM ⊄平面EFC ,∴//KM 平面EFC.【小问2详解】以点A 为原点,AB 所在的直线为x 轴,AD 所在的直线为y 轴,建立空间直角坐标系,如图.由已知可得()()()()()0,0,0,0,0,2,2,0,0,2,2,0,0,2,1A E B C F ,所以()()()2,2,2,2,0,2,0,2,1EC EB EF =-=-=-,设平面ECF 的法向量为(,,)n x y z =,则0,0.n EC n EF ⎧⋅=⎪⎨⋅=⎪⎩得020x y z y z +-=⎧⎨-=⎩,取1y =得,1,2x z ==,平面ECF 的一个法向量(1,1,2)n =.设直线EB 与平面ECF 所成的角为θ,则3sin cos ,6E EB n E B B n nθ⋅====⋅.所以直线EB 与平面ECF所成角的正弦值为6.20.放行准点率是衡量机场运行效率和服务质量的重要指标之一.某机场自2012年起采取相关策略优化各个服务环节,运行效率不断提升.以下是根据近10年年份数i x 与该机场飞往A 地航班放行准点率i y (1210i =L ,,,)(单位:百分比)的统计数据所作的散点图及经过初步处理后得到的一些统计量的值.xyt1021ii x=∑101iii x y=∑1021ii t=∑101iii t y=∑2017.580.4 1.5.0.227.71226.8其中()ln 2012i i t x =-,101110i i t t ==∑(1)根据散点图判断,y bx a =+与()ln 2012y c x d =-+哪一个适宜作为该机场飞往A 地航班放行准点率y 关于年份数x 的经验回归方程类型(给出判断即可,不必说明理由),并根据表中数据建立经验回归方程,由此预测2023年该机场飞往A 地的航班放行准点率.(2)已知2023年该机场飞往A 地、B 地和其他地区的航班比例分别为0.2、0.2和0.6.若以(1)中的预测值作为2023年该机场飞往A 地航班放行准点率的估计值,且2023年该机场飞往B 地及其他地区(不包含A 、B 两地)航班放行准点率的估计值分别为80%和75%,试解决以下问题:(i )现从2023年在该机场起飞的航班中随机抽取一个,求该航班准点放行的概率;(ii )若2023年某航班在该机场准点放行,判断该航班飞往A 地、B 地、其他地区等三种情况中的哪种情况的可能性最大,说明你的理由.附:(1)对于一组数据()11,u v ,()22,u v ,…,(),n n u v ,其回归直线v u αβ=+的斜率和截距的最小二乘估计分别为()()()112211ˆnni ii i i i n ni ii i u u vv u vnu v u u unu β====---⋅==--∑∑∑∑,ˆˆv u αβ=-参考数据:ln10 2.30≈,ln11 2.40≈,ln12 2.48≈.【正确答案】(1)()ln 2012y c x d =-+适宜,预测2023年该机场飞往A 地的航班放行准点率84%(2)(i )0.778;(ii )可判断该航班飞往其他地区的可能性最大,理由见解析【分析】(1)根据线性回归方程的计算公式,选择合适的模型计算即可;(2)利用全概率公式和条件概率公式,即可根据概率判断可能性最大的情况.【小问1详解】由散点图判断()ln 2012y c x d =-+适宜作为该机场飞往A 地航班放行准点率y 关于年份数x 的经验回归方程类型.令()ln 2012t x =-,先建立y 关于t 的线性回归方程.由于101102212101226.8101.580.4ˆ427.7101.510i iii i t y t yctt =--=--⨯⨯===-⨯-∑∑,ˆˆ804415744...dy ct =-=-⨯=,该机场飞往A 地航班放行准点率y 关于t 的线性回归方程为ˆ4744.yt =+,因此y 关于年份数x 的回归方程为()ˆ4ln 201274.4yx =-+所以当2023x =时,该机场飞往A 地航班放行准点率y 的预报值为()ˆ4ln 202320127444ln11744424074484....y=-+=+≈⨯+=.所以2023年该机场飞往A 地航班放行准点率y 的预报值为84%.【小问2详解】设1A =“该航班飞往A 地”,2A =“该航班飞往B 地”,3A =“该航班飞往其他地区”,C =“该航班准点放行”,则()10.2P A =,()20.2P A =,()30.6P A =,()10.84P C A =,()20.8P C A =,()30.75P C A =.(i )由全概率公式得,()()()()()()()112232P C P A P C A P A P C A P A P C A =++0.840.20.80.20.750.60.778=⨯+⨯+⨯=,所以该航班准点放行的概率为0.778.(ii )()()()()()()11110.20.840.778P A P C A P A C P A C P C P C ⨯===,()()()()()()22220.20.80.778P A P C A P A C P A C P C P C ⨯===,()()()()()()33330.60.750.778P A P C A P A C P A C P C ⨯===,因为0.60.750.20.840.20.8⨯>⨯>⨯,所以可判断该航班飞往其他地区的可能性最大.21.已知双曲线C :()22221,0x y a b a b-=>,直线1l :2y x =+线C 仅有一个公共点.(1)求双曲线C 的方程(2)设双曲线C 的左顶点为A ,直线2l 平行于1l ,且交双曲线C 于M ,N 两点,求证:AMN 的垂心在双曲线C 上.【正确答案】(1)2211616x y -=(2)证明见解析【分析】(1可得a b =,再联立直线与双曲线利用判别式可得C 的方程;(2)设2l 方程,及M N ,的坐标,由过A 引MN 的垂线交C 于另一点H ,可得点H 为2016,33⎛⎫- ⎪⎝⎭.再证AN MH ⊥即可.【小问1详解】因为双曲线C 2222a b a+=,即22a b =,所以双曲线C 的方程为222x y a -=,联立直线1l 与双曲线C 的方程2222y x x y a⎧=+⎪⎨-=⎪⎩,消去y 得(2222x x a -+=,即))2216480a +++=,因为1l 与双曲线C 仅有一个公共点,所以()22164480a ∆=-+=,解得216a =,故双曲线C 的方程为2211616x y -=.【小问2详解】设(2:2l y x m m =+≠,()11,M x y ,()22,N x y 则M N 、满足222,16,y x m x y =+⎧⎨-=⎩消去y 得2234160x mx m +++=,所以1243x x m +=-,212163m x x +=,如图所示,过A 引MN 的垂线交C 于另一点H ,则AH 的方程为122y x =--.代入2216x y -=得238800x x --=,即4x =-(舍去)或203x =.所以点H 为2016,33⎛⎫-⎪⎝⎭.所以()()()()()()21122122116322162320320443AN MHy y x m x m x m k k x x x x ⎛⎫+ ⎪++++⎝⎭==-+⎛⎫+- ⎪⎝⎭()()()2222212122212122241683163212632316312328016163280m m m m x x x m x x x m m x x x x x m m x +-++++++++==++--+---,22221632611632644m m x m m x -++==----+所以MH AN ⊥,故H 为AMN 的垂心,得证.关键点睛:本题考察直线与圆锥曲线的位置关系,属于压轴题.先求AMN 一条垂线与双曲线的交点H ,再证另两条过交点H 的直线互相垂直,由此得证,其中化简斜率关系是关键,用到了转化及整体消元的思想.22.已知()21ln 22f x a x x x =+-(R a ∈且0a ≠),()cos sin g x x x x =+.(1)求()g x 在[],ππ-上的最小值;(2)如果对任意的[]1,x ππ∈-,存在21,x e e ⎡⎤∈⎢⎥⎣⎦,使得()()212f x ag x x -≤成立,求实数a 的取值范围.【正确答案】(1)-1(2)()1,00,2⎡⎫-+∞⎪⎢⎣⎭【分析】(1)对()g x 求导,因为()g x 为偶函数,求出()g x 在()0,x π∈的单调性,即可求出[],ππ-上的最小值;(2)由(1)知,()g x 在[],ππ-上的最小值为1-,所以21,x e e⎡⎤∃∈⎢⎥⎣⎦,使得()221f x a x --≤成立,即()222221ln 2a x x x x --≥成立,即2222212ln x x a x x --≥,设()212ln x xx x xϕ-=-,1,x e e ⎡⎤∈⎢⎥⎣⎦,即只需()min a x ϕ≥即可.【小问1详解】()sin sin cos cos g x x x x x x x '=-++=,显然()g x 为偶函数,当0x >时,0,2x π⎛⎫∈ ⎪⎝⎭时,cos 0x x >,()0g x '>,∴()g x 在0,2π⎛⎫ ⎪⎝⎭单调递增;,2x ππ⎛⎫∈ ⎪⎝⎭时,cos 0x x <,()0g x '<,∴()g x 在,2ππ⎛⎫⎪⎝⎭单调递减;()01g =,22g ππ⎛⎫= ⎪⎝⎭,()1g π=-,∴()g x 在()0,π上的最小值为1-.由偶函数图象的对称性可知()g x 在(),ππ-上的最小值为1-.【小问2详解】先证ln 1≤-x x ,设()ln 1h x x x =-+,则()111x h x x x-'=-=,令()001h x x '>⇒<<,令()01h x x '⇒,∴()h x 在()0,1上单调递增,在()1,+∞上单调递减.()()10h x h ≤=故ln 1≤-x x ①恒成立.由题意可得21,x e e ⎡⎤∃∈⎢⎥⎣⎦,使得()221f x a x --≤成立,即()222221ln 2a x x x x --≥成立.由①可知22ln 10x x ->≥,参变分离得2222212ln x x a x x --≥,设()212ln x x x x xϕ-=-,1,x e e ⎡⎤∈⎢⎥⎣⎦,即只需()min a x ϕ≥即可.()()()()()()2221111ln 1ln 122'ln ln x x x x x x x x x x x x x x x ϕ-⎛⎫⎛⎫----⋅--+ ⎪ ⎪⎝⎭⎝⎭==--由①知ln 1≤-x x 得ln 1x x -≥-,∴1114ln 111202222xx x x x x --++-+=-=>≥令()'01x x e ϕ>⇒<<,令()1'01x x eϕ<⇒<<,∴()x ϕ在1,1e ⎛⎫ ⎪⎝⎭上单调递减,在()1,e 上单调递增.∴()()min 112x ϕϕ==-,∴12a ≥-,又已知0a ≠故a 的取值范围为()1,00,2⎡⎫-+∞⎪⎢⎣⎭.。
高考语文模拟试题三及答案
高考模拟试题三本试卷分第Ⅰ卷(阅读题)和第Ⅱ卷(表达题)两部分,其中第Ⅰ卷第三、四题为选考题,其它为必考题。
满分150分,考试时间150分钟。
第Ⅰ卷(阅读题共70分)甲必考题一、现代文阅读(9分,每小题3分)阅读下面的文字,完成1~3题。
“理趣”这个说法是宋人首先提出来的。
“理趣”,顾名思义,是要说理而好玩。
这个问题的提出,是和宋诗的特点有亲密关系的。
宋诗由于受理学泛滥和韩愈“以文为诗”的影响,与唐诗以抒情为主的特点不同,比较侧重于说理。
明代李梦阳就说过“宋人主理”的话。
然而,过分强调说理,有可能使诗歌变得枯燥、乏味,产生概念化的缺点,甚至于损害和忽视了诗歌的形象思维特征,而以一般理论文章的思维去写诗,其结果就会像宋代道学家以与受他们影响的某些诗歌一样,成为“理学语录讲义之押韵者”。
则,怎样才能使诗歌虽以说理为主,而又不违反艺术本身的特殊规律呢?这就要使诗歌中的理和趣相统一,达到水乳交融的境界。
所谓“趣”,是针对诗歌的艺术特征而说的,要求诗歌能够感发读者的审美趣味。
严羽在《沧浪诗话·诗辨》中说:“诗有别趣,非关理也。
”其实并非否定“理”,而是强调仅仅有“理”不能算诗,诗还必需有“趣”。
宋代多数诗人,包括一些道学家写的诗,也是留意到了诗歌中的“理”是应当有“趣”的。
比如北宋的程颢曾赞扬石曼卿的两句诗“乐意相关禽对语,生香不断树交花”,是“形容的浩然之气”的状况的。
诗歌的“理趣”虽然主要表现在以生动具体的美的形象去表现特定的某个生活真理,但是也并不仅仅在此。
有“理趣”的诗歌也不完全排斥“以理语入诗”。
诗歌并不是肯定地不能写“理语”,问题要看这种“理语”在全诗中所起的地位和作用。
假如它是和全诗的艺术形象和谐统一,而且也是它的一个必要组成部分的话,则这种“理语”不仅可以“入诗”,往往还是特别必要、不行缺少的。
留意“理趣”虽是宋诗的重要特点,但它的渊源却是很早的。
袁枚《随园诗话》说:“或云:‘诗无理语。
2023国考公务员考试《行测判断推理题》全真模拟试题(三)含解析
2023国考公务员考试《行测判断推理题》全真模拟试题(三)一、类比推理练习题(一)1.春风得意:闭月羞花()A.一发千钧:三顾茅庐B.风木含悲:百花争艳C.怒发冲冠:巧舌如簧D.一日三秋:大彻大悟2.院士:学者()A.画家:艺术家B.研究员:青年C.明星:艺术家D.专家:教授3.赠送:收受()A.制定:实施B.制造:化解C.给予:享有D.向往:憧憬4.面粉:增白剂()A.白酒:塑化剂B.果汁:色素C.大豆:转基因D.饮料:添加剂5.北京:故宫()A.唐山:曹妃甸B.泰山:迎客松C.庐山:仙人洞D.乐山:大佛6.封面∶书本()A.政治∶统治B.宗教∶上层建筑C.雇员∶工厂D.毛笔∶宣纸7.( ) 对于计算机相当于大脑对于 ( )A.网络身体B.鼠标小脑C.CPU 人体D.显示器脑干8.台灯:照明()A.汽车:奔驰B.筷子:夹菜C.鸟儿:飞翔D.手表:电池9.银元:白银:货币()A.竹筏:竹子:木舟B.瓦片:泥土:屋顶C.琵琶:木材:弦乐【参考答案与解析】1.【答案】D解析:春风得意和一日三秋都是主谓式成语;闭月羞花和大彻大悟都是联合式成语,D项正确。
2.【答案】A解析:包含关系,院士都是学者,画家都是艺术家,A项正确。
3.【答案】C解析:一个事件的双方:赠送方与收受方;C项也符合此关系。
4.【答案】A解析:面粉中添加增白剂和白酒中添加塑化剂都是食品安全问题。
5.【答案】D解析:第一步:判断题干词语间逻辑关系故宫是北京市的著名景点之一,且故宫是人工建造的。
题干两词间构成著名景点与其所在城市的对应关系。
第二步:判断选项词语间逻辑关系D项,大佛是乐山市的著名景点之一,且大佛也是人工建造的,符合题干逻辑。
A、B、C三项中,景点和所在地都能对应上,但“曹妃甸”、“迎客松”和“仙人洞”都不是人工建造的景点,与题干逻辑不符。
故正确答案选D。
6.【答案】B解析: 封面是书本的重要组成部分,宗教是上层建筑的一部分,故选B项。
ITILFoundation模拟试题(三)
ITILFoundation模拟试题(三)ITILFoundation模拟试题(三)1.【单选题】1分| IT组织中的员工非常忙碌,但执行的大部分任务对组织或其客户几乎没有价值。
下面哪项指导原则建议去除不必要的工作?A 保持简单实用B 整体思考和工作C 基于当前情况开始D 利用反馈迭代式进展2.【单选题】1分| 下面哪项实践的目的包括管理能够给IT服务的交付提供支持且具有财务价值的组件?A 部署管理B 持续改进C 监视和事态管理D IT资产管理3.【单选题】1分| 下面哪项实践可以确保属于服务交付正常部分的服务行动得到有效处理?A 事件管理B 服务级别管理C 问题管理D 服务请求管理4.【单选题】1分| 由于计划外维护,接下来的两小时内将无法使用服务。
下面哪项实践最有可能涵盖此项管理?A 事件管理B 问题管理C 变更实施D 服务请求管理5.【单选题】1分| 下面哪项实践与用同理心了解用户关联最大?A 服务台B 持续改进C 服务级别管理D 变更实施6.【单选题】1分| 将下面的句子补充完整。
客户定义服务(?)并对服务消费结果负责。
A 要求B 资源C 供应商D 产品7.【单选题】1分| 下面哪项可以确保服务提供方和服务消费者持续共创价值?A 服务消费B 服务供给C 变更实施D 服务关系管理8.【单选题】1分| 通常使用下面哪种变更来解决事件或实施安全补丁?A 标准变更B 正常变更C 紧急变更D 变更模型9.【单选题】1分| 下面哪项包括配置组件和活动以促成利益相关者想要的结果?A 服务关系管理B 服务消费C 服务价值系统D “发布管理”实践10.【单选题】1分| 下面哪项关于结果的表述是正确的?A 结果实现产品到利益相关者的交付B 结果定义在服务技术方面支出的费用C 结果取决于至少一个交付结果输出D 结果为利益相关者提供如何实施服务的保证11.【单选题】1分| 下面哪一问题管理阶段包括定期评估临时方案的有效性?A 问题确定B 问题控制C 错误控制D 问题分析12.【单选题】1分| 下面哪项实践执行评审,以确保服务持续满足客户需求?A 监视和事态管理B 服务级别管理C变更实施D 服务台13.【单选题】1分| 下面哪个服务价值链活动涉及购买新产品?A 参与B 获取/构建C计划D 改进14.【单选题】1分| 下面哪项属于“持续改进”实践的目的?A 尽快恢复正常服务运营B 在组织和其利益相关者之间建立战略与战术层面上的关系C 确保组织实践和服务与不断变化的业务需求保持一致D 降低事件发生的可能性和影响15.【单选题】1分| “改进”价值链活动的目的包含下面哪一项?A 确保在所有价值链活动中对实践进行持续改进B 确保服务持续满足对质量、成本和投入市场时间的期望C 确保对整个组织的服务改进方向达成共识D 确保持续参与并与所有利益相关者保持良好关系16.【单选题】1分| 下面哪种类型的资源最适合调查复杂事件?A 自助系统B 知识储备丰富的支持人员C 详细的作业指导书D 灾难恢复计划17.【单选题】1分| 下面哪项被定义为“为交付IT服务而需要进行管理的任何组件”?A 事态B IT 资产C 配置项D 变更18.【单选题】1分| 下面哪两个表述与“优化和自动化”指导原则关联最大?1.评估各类利益相关者分别适用哪种沟通方法非常重要。
Part3口语模拟试题test3
Test 3I .SPEAKINGSection ADirections: Read aloud the following two sentences. For each sentence, you will have thirty seconds to prepare and fifteen seconds to read.1. Where would you prefer to live, in a small town or in a big city?2.Recently the World Conservation Union said that more than 12,000 species face the risk of extinction, including one bird in eight, 13% of the world's plants and 25% of all mammals.Section BDirections: Read aloud the following passage. You will have one minute to prepare and thirty seconds to read.When I was 17, I read a quote that went something like: “If you live each ..day as if it was your last, someday you’ll most certainly be right.” It made an impression on me, and since then, for the past 33 years, I have looked in the mirror every morning and asked myself: If today were the last day of my life, would I want to do what I am about to do today?, And whenever the answer has been “No” for too many days in a row, I know I need to change something.Section CDirections: Ask two questions about each situation given below. At least one special question should be asked about each situation.Questions 1—2: Your mother lost her mobile phone. Ask two questions in order to help her find it.Question 1:Question 2:Questions 3-4: You call a university. Ask two questions about the summer course you want to take.Question 3:Question 4:Section DDirections: You will have one minute to prepare and another minute to talk in at least five sentences about the following pictures. Begin your talk with the sentence given:Last Monday was Chinese Mid-Autumn Festival.II. LISTENING AND SPEAKINGSection ADirections: In Section A, you will hear four sentences. Make quick responses to the sentences you have heard.Section BDirections: In Section B, you will hear a short passage. The passage will be read twice. After you hear the passage, answer the first question with the information you hear and the second question in your own opinion with at least 3 sentences. For the first question, you will have 30 seconds to prepare and 30 seconds to talk. For the second question, you will have one minute to prepare and another minute to talk.Questions:1.Why does Gordon choose bus to go to school?2.What is the main cause for the heavy traffic in Shanghai in your opinion?录音内容:II. LISTENING AND SPEAKINGSection A1.Ifs very good of you to help me with this essay writing problem.2.Mum, I hope I can have an IPad like Jason's.3.Excuse me, can you tell me how to use this machine to buy a ticket?4.May I remind you that you borrowed my notes and l need them now?Section BListen to the following speaker talking about a British boy who is at an international school in Shanghai.Gordon is a fifteen-year-old British boy at an international school in Shanghai. His parents work for a British company that has recently opened an office there. Gordon really enjoys his new school. But the problem is that the school is 15 kilometers away from where the family lives. His parents were very worried about how Gordon was going to get to school, so for the first week they took Gordon by car. However, when they had to make sure that Gordon arrived at school at 8, they were late for work.Gordon is quite keen to cycle, but Mother will not allow that because she is concerned about the heavy traffic on the roads. The taxi is quite expensive and it's usually difficult to get one in rush hour. There isn't direct subway route between his school and his home. Going by bus seems to be the best solution. Buses are cheaper and more frequent. There are other students on the bus and so he has the opportunity to talk with his friends. Gordon now enjoys his journey to school.参考答案:SPEAKINGSection C1. When did you last see your mobile phone?2. Do you think you might leave it in the Kitchen or on the nightstand in the bedroom?3. Do you have a computer course in your summer school this year?4. When will the course start and when will it end?Section DLast Monday was Chinese Mid-Autumn Festival. Ming Ming's mother asked him to take a box of moon cakes to his grandparents. Grandma was so delighted since she liked the moon cakes. But Grandpa wanted to give the cakes to their neighbor Lao Zhang, who was ill in bed for quite-a long time, Lao Zhang was grateful to his daughter's teacher, and so he asked his daughter to give the cakes to her teacher, who happened to be Ming Ming's mother. Ming Ming and his mother were surprised to see the box of cakes back to them.LISTENING AND SPEAKINGSection A1.You are welcome. / Don't mention it.2.OK, you can have one as a birthday present next month. / What? You want, another one?3.Certainly. First you choose your destination, then put the money into the slot and get your ticket here. / Sorry, I don't know how to use it either.4. Oh, sorry, I’ll give them back to you right away. / What? I asked Mary to give them to you yesterday.Section B1.Buses are cheaper and more frequent and he can meet other students on bus.2.In my opinion the main cause for the heavy traffic is an increasing number of private cars on the roads.Some families even have two or three cars. Each usually only carries one person or two and this is a big waste of resources.。
成都市中考数学模拟试题(3)(解析版)
成都市中考数学模拟试题(3)A卷(共100分)第Ⅰ卷一.选择题(共10小题,满分30分,每小题3分)1.(3分)在有理数2,0,﹣1,﹣3中,任意取两个数相加,和最小是()A.2 B.﹣1 C.﹣3 D.﹣4【答案】D【解析】(﹣1)+(﹣3)=﹣4.故选:D.2.(3分)八个大小相同的正方体搭成的几何体如图所示,其主视图是()A.B.C.D.【答案】C【解析】从正面看,共有三列,每列的小正方形个数分别为2、1、2,故选:C.3.(3分)据央视网消息,全国广大共产党员积极响应党中央号召,踊跃捐款,表达对新冠肺炎疫情防控工作的支持.据统计,截至2020年3月26日,全国已有7901万多名党员自愿捐款,共捐款82.6亿元.82.6亿用科学记数法可表示为()A.0.826×1010B.8.26×109C.8.26×108D.82.6×108【答案】B【解析】82.6亿=8 260 000 000=8.26×109,故选:B.4.(3分)将点P(2,1)沿x轴方向向左平移3个单位,再沿y轴方向向上平移2个单位,所得的点的坐标是()A.(﹣1,﹣1)B.(﹣1,3)C.(5,﹣1)D.(5,3)【答案】B【解析】将点P(2,1)沿x轴方向向左平移3个单位,再沿y轴方向向上平移2个单位,所得的点的坐标是(﹣1,3).故选:B.5.(3分)一块含有45°的直角三角板和直尺如图放置,若∠1=55°,则∠2的度数是()A.30°B.35°C.40°D.45°【答案】B【解析】如图,延长ME,交CD于点F,∵AB∥CD,∠1=55°,∴∠MFC=∠1=55°,在Rt△NEF中,∠NEF=90°,∴∠3=90°﹣∠MFC=35°,∴∠2=∠3=35°,故选:B.6.(3分)下列计算正确的是()A.(a﹣b)(﹣a﹣b)=a2﹣b2B.2a3+3a3=5a6C.6x3y2÷3x=2x2y2D.(﹣2x2)3=﹣6x6【答案】C【解析】(a﹣b)(﹣a﹣b)=b2﹣a2,故选项A错误;2a3+3a3=5a3,故选项B错误;6x3y2÷3x=2x2y2,故选项C正确;(﹣2x2)3=﹣8x6,故选项D错误;故选:C.7.(3分)方程=的解为()A.﹣2 B.﹣1 C.1 D.2【答案】A【解析】方程两边都乘以2x(x﹣2),得:2x=x﹣2,移项,得:2x﹣x=﹣2,合并同类项,得:x=﹣2.经检验,x=﹣2是原方程的根.所以,原方程的根为x=﹣2.故选:A.8.(3分)在一次中学生田径运动会上,参加男子跳高的15名运动员的成绩如图所示,则这些运动员成绩的中位数为()A.160 B.165 C.170 D.175【答案】B【解析】把这些数从小到大排列,中位数是第8个数,则这些运动员成绩的中位数为165cm.故选:B.9.(3分)如图,⊙O是正六边形ABCDEF的外接圆,P是弧AB上一点,则∠CPD的度数是()A.30°B.40°C.45°D.60°【答案】A【解析】连接OC,OD,∵六边形ABCDEF是正六边形,∴∠COD==60°,∴∠CPD=COD=30°,故选:A.10.(3分)抛物线y=ax2+bx+c经过点(﹣2,0),且对称轴为直线x=1,其部分图象如图所示.对于此抛物线有如下四个结论:①b=2a;②4a+2b+c>0;③若n>m>0,则x=1+m时的函数值小于x=1﹣n时的函数值;④点(,0)一定在此抛物线上.其中正确结论的个数是()A.4个B.3个C.2个D.1个【答案】C【解析】∵抛物线的对称轴为直线x=1,∴﹣=1,∴b=﹣2a,故①错误;∵抛物线的对称轴为直线x=1,而点(﹣2,0)关于直线x=1的对称点的坐标为(4,0),∵抛物线开口向下,∴当x=2时,y>0,∴4a+2b+c>0,故②正确;∵抛物线开口向下,对称轴为直线x=1,∴横坐标是1﹣n的点的对称点的横坐标为1+n,∵若n>m>0,∴1+n>1+m,∴x=1+m时的函数值大于x=1﹣n时的函数值,故③错误;∵b=﹣2a,∴抛物线为y=ax2﹣2ax+c,∵抛物线y=ax2+bx+c经过点(﹣2,0),∴4a+4a+c=0,即8a+c=0,∴c=﹣8a,∴﹣=4,∵点(﹣2,0)的对称点是(4,0),∴点(﹣,0)一定在此抛物线上,故④正确,故选:C.二.填空题(共4小题,满分16分,每小题4分)11.(4分)若2x﹣3和1﹣4x互为相反数,则x的值是________.【答案】﹣1.【解析】∵2x﹣3和1﹣4x互为相反数,∴2x﹣3+1﹣4x=0,解得:x=﹣1.12.(4分)一个等腰三角形一腰上的高与另一腰的夹角为36°,则此三角形顶角度数为________.【答案】54°或126°【解析】当△ABC是锐角三角形时,∠ACD=36°,∠ADC=90°,∴∠A=54°,当△ABC是钝角三角形时,∴∠ACD=36°,∠ADC=90°,∴∠BAC=∠ADC+∠ACD=126°13.(4分)已知直线y=(k﹣2)x+k经过第一、二、四象限,则k的取值范围是________.【答案】0<k<2.【解析】∵一次函数y=(k﹣2)x+k的图象经过第一、二、四象限,∴k﹣2<0且k>0;∴0<k<2,14.(4分)如图,在▱ABCD中,CD=2,∠B=60°,BE:EC=2:1,依据尺规作图的痕迹,则▱ABCD的面积为________.【答案】3.【解析】如图,过点A作AH⊥BC于H,由作图可知,EF垂直平分线段AB∴EA=EB,∵∠B=60°,∴△ABE是等边三角形,∴AB=BE=AE,∵四边形ABCD是平行四边形,∴AB=CD=2,∴BE=AB=2,∵AH⊥BE,∴BH=EH=1,∴AH===,∵BE:EC=2:1,∴EC=1,BC=BE+EC=3,∴平行四边形ABCD的面积=BC•AH=3,三.解答题(共6小题,满分54分)15.(12分)(1)计算:+(1+π)0﹣2cos45°+|1﹣|.(2)解不等式组:.【答案】见解析【解析】(1)原式=2+1﹣2×+﹣1=2+1﹣+﹣1=2;(2)由①得:x>2.5,由②得:x≤4,则不等式组的解集为2.5<x≤4.16.(6分)先化简,再求值:(+)÷,其中m=9.【答案】见解析【解析】原式=×=,当m=9时,原式==.17.(8分)新学期,某校开设了“防疫宣传”“心理疏导”等课程,为了解学生对新开设课程的掌握情况,从八年级学生中随机抽取了部分学生进行了一次综合测试.测试结果分为四个等级:A级为优秀,B 级为良好,C级为及格,D级为不及格.将测试结果绘制了两幅不完整的统计图.根据统计图中的信息解答下列问题:(1)本次抽样测试的学生人数是________名;(2)扇形统计图中表示A级的扇形圆心角α的度数是________,并把条形统计图补充完整;(3)该校八年级共有学生400名,如果全部参加这次测试,估计优秀的人数为多少?【答案】见解析【解析】(1)本次抽样测试的学生人数是:12÷30%=40(名),故答案为:40;(2)扇形统计图中表示A级的扇形圆心角α的度数是:360°×=54°,故答案为:54°,C级的人数为:40×35%=14,补充完整的条形统计图如右图所示;(3)400×=60(人),即优秀的有60人.18.(8分)如图,某办公楼AB的右边有一建筑物CD,在建设物CD离地面2米高的点E处观测办公楼顶A点,测得的仰角∠AEM=22°,在离建设物CD25米远的F点观测办公楼顶A点,测得的仰角∠AFB=45°(B,F,C在一条直线上).(1)求办公楼AB的高度;(2)若要在A,E之间挂一些彩旗,请你求出A,E之间的距离.(参考数据:)【答案】见解析【解析】(1)如图,过点E作EM⊥AB于点M,设AB为x.Rt△ABF中,∠AFB=45°,∴BF=AB=x,∴BC=BF+FC=x+25,在Rt△AEM中,∠AEM=22°,AM=AB﹣BM=AB﹣CE=x﹣2,,则,解得:x=20.即办公楼的高20m;(2)由(1)可得ME=BC=x+25=20+25=45.在Rt△AME中,cos22°=.∴AE===48,即A、E之间的距离约为48m.19.(10分)如图,一次函数y1=ax+b与反比例函数y2=的图象相交于A(2,8),B(8,2)两点,连接AO,BO,延长AO交反比例函数图象于点C.(1)求一次函数y1的表达式与反比例函数y2的表达式;(2)当y1<y2,时,直接写出自变量x的取值范围为________;(3)点P是x轴上一点,当S△P AC=S△AOB时,请直接写出点P的坐标为________.【答案】见解析【解析】(1)将A(2,8),B(8,2)代入y=ax+b得,解得,∴一次函数为y=﹣x+10,将A(2,8)代入y2=得8=,解得k=16,∴反比例函数的解析式为y=;(2)由图象可知,当y1<y2时,自变量x的取值范围为:x>8或0<x<2, 故答案为x>8或0<x<2;(3)由题意可知OA=OC,∴S△APC=2S△AOP,把y=0代入y1=﹣x+10得,0=﹣x+10,解得x=10,∴D(10,0),∴S△AOB=S△AOD﹣S△BOD=﹣=30,∵S△P AC=S△AOB=×30=24,∴2S△AOP=24,∴2××y A=24,即2×OP×8=24,∴OP=3,∴P(3,0)或P(﹣3,0),故答案为P(3,0)或P(﹣3,0).20.(10分)如图,过点P作P A,PB,分别与以OA为半径的半圆切于A,B,延长AO交切线PB于点C,交半圆与于点D.(1)若PC=5,AC=4,求BC的长;(2)设DC:AD=1:2,求的值.【答案】见解析【解析】(1)∵P A,PB是⊙O的切线∴P A=PB,∠P AC=90°∴AP==3∴PB=AP=3∴BC=PC﹣PB=2(2)连接OB,∵CD:AD=1:2,AD=2OD∴CD=OD=OB∴CO=2OB∵PB是⊙O切线∴OB⊥PC∴∠OBC=90°=∠P AC,且∠C=∠C∴△OBC∽△P AC∴∴PC=2P A,∴=B卷(共50分)一.填空题(共5小题,满分20分,每小题4分)21.(4分)估算:≈________.(结果精确到1)【答案】7.【解析】≈7;22.(4分)设x1、x2是方程x2+mx﹣5=0的两个根,且x1+x2﹣x1x2=1,则m=________.【答案】4.【解析】∵x1、x2是方程x2+mx﹣5=0的两个根,∴x1+x2=﹣m,x1x2=﹣5.∵x1+x2﹣x1x2=1,即﹣m﹣(﹣5)=1,∴m=4.23.(4分)一个密码箱的密码,每个位数上的数都是从0到9的自然数,若要使不知道密码的一次就拨对密码的概率小于,则密码的位数至少需要________位.【答案】3.【解析】因为取一位数时一次就拨对密码的概率为,取两位数时一次就拨对密码的概率为,取三位数时一次就拨对密码的概率为,故密码的位数至少需要3位.24.(4分)如图,在边长为2的菱形ABCD中,∠ABC=60°,将△BCD沿直线BD平移得到△B′C′D′,连接AC′、AD′,则AC′+AD′的最小值为________.【答案】2.【解析】如图,连接BC',连接直线CC',∵四边形ABCD是菱形,∴AB∥CD,AB=CD,∵将△BCD沿直线BD平移得到△B′C′D′,∴AB∥C'D',AB=C'D',∴四边形ABC'D'是平行四边形,∴AD'=BC',∴AC′+AD′=AC'+BC',∵点C′在过点C且平行于BD的定直线CC'上,∴作点B关于定直线CC'的对称点E,连接AE,连接BE交CC'于H,则AE的长度即为AC′+AD′的最小值,在Rt△BHC中,∠BCH=∠DBC=30°,AD=2,∴∠CBH=60°,BH=EH=BC=1,∴BE=2,∴BE=AB,∵∠ABE=∠EBB′+∠DBA=90°+30°=120°,∴∠E=∠BAE=30°,∴AE=2×AB=2.25.(4分)如图,在平面直角坐标系中,A(3,0),B(0,4),C(2,0),D(0,1),连接AD、BC交于点E,则三角形ABE的面积为________.【答案】.【解析】连接OE,如图,∵A(3,0),B(0,4),C(2,0),D(0,1),∴AO=3,OB=4,OC=2,OD=1,设E(m,n),∵S△OAD=,∴S△OAD=S△OED+S△OAE=;∵S△OCB==4,∴S△OEB+S△OEC=2m+n=4;解方程组得,,∴S△BEA=S△BCA﹣S△AEC==.二.解答题(共3小题,满分30分)26.(8分)某汽车清洗店,清洗一辆汽车定价20元时每天能清洗45辆,定价25元时每天能清洗30辆,假设清洗汽车辆数y(辆)与定价x(元)(x取整数)是一次函数关系(清洗每辆汽车成本忽略不计).(1)求y与x之间的函数表达式;(2)若清洗一辆汽车定价不低于15元且不超过50元,且该汽车清洗店每天需支付电费、水和员工工资共计200元,问:定价为多少时,该汽车清洗店每天获利最大?最大获利多少?【答案】见解析【解析】(1)设y与x的一次函数式为y=kx+b,由题意可知:,解得:,∴y与x之间的函数表达式为y=﹣3x+105;(2)设汽车美容店每天获利润为w元,由题意得:w=xy﹣200=x(﹣3x+105)﹣200=﹣3(x﹣17.5)2+718.75,∵15≤x≤50,且x为整数,∴当x=17或18时,w最大=718(元).∴定价为17元或18元时,该汽车清洗店每天获利最大,最大获利是718元.27.(10分)【探究证明】(1)某班数学课题学习小组对矩形内两条互相垂直的线段与矩形两邻边的数量关系进行探究,提出下列问题,请你给出证明:如图①,在矩形ABCD中,EF⊥GH,EF分别交AD、BC于点E、F,GH分别交AB、DC于点G、H,求证:=;【结论应用】(2)如图②,将矩形ABCD沿EF折叠,使得点B和点D重合,若AB=2,BC=3.求折痕EF的长;【拓展运用】(3)如图③,将矩形ABCD沿EF折叠.使得点D落在AB边上的点G处,点C落在点P处,得到四边形EFPG,若AB=2,BC=3,EF=,请求BP的长.【答案】见解析【解析】(1):如图①,过点A作AP∥EF,交BC于P,过点B作BQ∥GH,交CD于Q,BQ交AP于T.∵四边形ABCD是矩形,∴AB∥DC,AD∥BC.∴四边形AEFP、四边形BGHQ都是平行四边形, ∴AP=EF,GH=BQ.又∵GH⊥EF,∴AP⊥BQ,∴∠BAT+∠ABT=90°.∵四边形ABCD是矩形,∴∠ABP=∠C=90°,AD=BC,∴∠ABT+∠CBQ=90°,∴∠BAP=∠CBQ,∴△ABP∽△BCQ,∴=,∴=.(2)如图②中,连接BD.∵四边形ABCD是矩形,∴∠C=90°,AB=CD=2,∴BD===,∵D,B关于EF对称,∴BD⊥EF,∴=,∴=,∴EF=.(3)如图③中,过点F作FH⊥EG于H,过点P作PJ⊥BF于J.∵四边形ABCD是矩形,∴AB=CD=2,AD=BC=3,∠A=90°,∴=,∴DG=,∴AG===1,由翻折可知:ED=EG,设ED=EG=x,在Rt△AEG中,∵EG2=AE2+AG2,∴x2=AG2+AE2,∴x2=(3﹣x)2+1,∴x=,∴DE=EG=,∵FH⊥EG,∴∠FHG=∠HGP=∠GPF=90°,∴四边形HGPF是矩形,∴FH=PG=CD=2,∴EH===,∴GH=FP=CF=EG﹣EH=﹣=1,∵PF∥EG,EA∥FB,∴∠AEG=∠IPF,∵∠A=∠FJP=90°,∴△AEG∽△JFP,∴==,∴==,∴FJ=,PJ=,∴BJ=BC﹣FJ﹣CF=3﹣﹣1=,在Rt△BJP中,BP===.解法二:作PH垂直AB于H,证△AEG∽△HGP,求出GH,HP,然后在直角三角形BPH,勾股定理求出BP.28.(12分)如图,在平面直角坐标系中,抛物线y=﹣x2+bx+c与x轴交于A(﹣1,0),B(3,0)两点,与y轴交于点C.(1)直接写出抛物线的解析式为:________;(2)点D为第一象限内抛物线上的一动点,作DE⊥x轴于点E,交BC于点F,过点F作BC的垂线与抛物线的对称轴和y轴分别交于点G,H,设点D的横坐标为m.①求DF+HF的最大值;②连接EG,若∠GEH=45°,求m的值.【答案】见解析【解析】(1)将点A(﹣1,0),B(3,0)代入抛物线y=﹣x2+bx+c得:,解得:,∴抛物线的解析式为:y=﹣x2+2x+3.故答案为:y=﹣x2+2x+3;(2)①当x=0时,y=﹣x2+2x+3=3,∴点C(0,3),又∵B(3,0),∴直线BC的解析式为:y=﹣x+3,∵OB=OC=3,∴∠OBC=∠OCB=45°,作FK⊥y轴于点K,又∵FH⊥BC,∴∠KFH=∠KHF=45°,∴FH=KF=OE,∴DF+HF=DE﹣EF+OE=(﹣m2+2m+3)﹣(﹣m+3)+m=﹣m2+(3+)m,由题意有0<m<3,且0<﹣=<3,﹣1<0,∴当m=时,DF+HF取最大值,DF+HF的最大值为:﹣+(3+)×=;②作GM⊥y轴于点M,记直线FH与x轴交于点N,∵FK⊥y轴,DE⊥x轴,∠KFH=45°,∴∠EFH=∠ENF=45°,∴EF=EN,∵∠KHF=∠ONH=45°,∴OH=ON,∵y=﹣x2+2x+3的对称轴为直线x=1,∴MG=1,∵HG=MG=,∵∠GEH=45°,∴∠GEH=∠EFH,又∠EHF=∠GHE,∴△EHG∽△FHE,∴HE:HG=HF:HE, ∴HE2=HG•HF=×m=2m,在Rt△OEH中,OH=ON=|OE﹣EN|=|OE﹣EF|=|m﹣(﹣m+3)|=|2m﹣3|,OE=m,∴HE2=OE2+OH2=m2+(2m﹣3)2=5m2﹣12m+9,∴5m2﹣12m+9=2m, 解得:m=1或.。
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市场营销学-模拟试题3一、单选题(每题1分,共40分)1.通过过程的比较,发现隐藏在不同企业或不同部门市场营销绩效差异背后的关键因素,以便使企业经营管理的效率和效益赶上或超过竞争对手的定点超越称为()A.产品定点超越B.过程定点超越C.组织定点超越D.战略定点超越2.国内某钢铁企业,利用自己在商标、技术、市场、资金等方面的优势,通过兼并收购其它钢铁企业来壮大自己,该企业采用的一体化增长方式属于()A.水平一体化B.前向一体化C.后向一体化D.同心多元化3.某家电生产企业从其目标市场的顾客中,按照随机原则抽取了50名顾客进行问卷调查,以了解目标顾客对其产品的认知、偏好等原始信息,该企业这种收集原始数据的方法属于()A.观察法B.实验法C.调查法D.专家估计法4.某家用电器企业不仅生产经营家电类产品,还跨行业经营房地产、机械、农副产品等多种业务,这种战略是()A.市场渗透战略B.市场开发战略C.产品开发战略D.多元化经营战略5.行业吸引力大,业务力量强的战略业务单位在多因素投资组合矩阵中处于()A.黄色地带B.红色地带C.绿色地带D.白色地带6.在市场营销系统中,主要用于了解外部环境发展趋势信息的子系统为()A.内部报告系统B.市场营销调研系统C.市场营销情报系统D.市场营销分析系统7.将企业的注意力侧重于生产高质量、多功能高值产品的经营观念是()A.产品观念B.生产观念C.市场营销观念D.推销观念8.在战略业务单位的评价中,对于瘦狗类产品应采取的战略是()A.保持战略B.发展战略C.增大战略D.放弃战略9.保护消费者权益组织、环境保护组织、少数民族组织属于()A.媒体公众B.一般公众C.政府公众D.市民行动公众10.向企业供应原材料、部件、能源、劳动力和资金等资源的企业或组织称为()A.供应商B.商人中间商C.辅助商D.代理中间商11.市场挑战者最间接的进攻战略是()A.正面进攻B.侧翼进攻C.包围进攻D.迂回进攻12.某公司以补贴价格和差异很小的产品攻击另一个同类企业的核心市场,对被攻击公司而言,该公司属于()A.理性的竞争者B.破坏性的竞争者C.良好的竞争者D.善良的竞争者13.在菲律宾,生力啤酒公司的白威士忌受到亚洲啤酒公司“虎”牌啤酒的挑战,生力公司为应付这一挑战,推出了“金鹰”品牌,结果取得了防御成功。
这种防御策略是()A.反击防御B.运动防御C.侧翼防御D.阵地防御14.报纸、杂志、广播、电视属于()A.政府公众B.媒体公众C.一般公众D.市民行动公众15.在各个细分市场和市场营销组合方面,尽可能仿效主导者,这种战略属于()A.距离跟随B.紧密跟随C.选择跟随D.假冒名牌16.描述消费者所期望的产品满足感随产品属性的不同而有所变化的函数关系,在消费者对产品评价方案中属于()A.产品属性B.属性权重C.品牌信念D.效用函数17.品牌是一个集合概念,包括品牌名称、商标和()A.品牌标志B.符号C.图案D.标记18.当市场需求趋于饱和,潜在的顾客已经很少,销售额增长缓慢直至转而下降,标志着产品进入了()A.成熟期B.衰退期C.成长期D.介绍期19.电话用户每月都要支付一笔最少的使用费,如果使用次数超过规定还要再交费。
电信公司这种定价方式属于()A.分部定价B.补充产品定价C.产品线定价D.产品系列定价20.有利于降低生产、存货、运输、研究、促销等成本费用的营销方式是()A.集中性市场营销B.分散性市场营销C.无差异市场营销D.差异性市场营销21.质量不易鉴别的商品的定价最适宜采用()A.招徕定价B.尾数定价C.分区定价D.声望定价22.交叉弹性为正值时,表明这两种产品为()A.互补品B.替代品C.必须品D.奢侈品23.在产品包装上也有许多的艺术和策略,化妆品采用系列化的包装,这属于()A.相似包装策略B.相关包装策略C.差异包装策略D.复用包装策略24.交叉弹性为负值时,表明这两种产品为()A.互补品B.替代品C.必须品D.奢侈品25.交叉销售的核心是()A.与顾客的沟通B.数据库的应用C.销售策略D.提高营销效益26.企业最主要的社会责任是()A.保护消费者权益B.遵守法律规范C.承担对于所处环境的社会义务D.制定合理的价格以谋求暴利27.消费品市场营销的最主要的促销工具是()A.广告B.人员推销C.销售促进D.宣传28.下列()是对“关注顾客资源”的管理思想的充分体现。
A.网络营销管理B.客户关系管理C.整合营销管理D.接触管理29.销售人员在产品售出后,主动征求顾客意见,这属于()A.鼓动型关系营销B.能动型关系营销C.负责型关系营销D.伙伴型关系营销30.宝洁公司不同的品牌有专人负责,它的营销组织是()A.职能型组织B.产品型组织C.市场型组织D.地理型组织31.调整企业与所有利益相关者之间关系的行为规范的总和称为()A.企业道德B.营销道德C.营销规律D.营销法规32.能够及时、正确地获取顾客的需求信息,这是()的优势。
A.网络营销B.电子商务C.网上销售D.电话营销33.相对于黑白电视机而言,纯平彩色电视机属于()A.全新产品B.换代产品C.改进产品D.仿制产品34.推销人员与中间商促销将产品推入渠道的营销策略属于()A.产品策略B.拉式策略C.推式策略D.渠道策略35.在社会交往中,人人都希望得到尊重和权威,希望得到荣誉,这种需要称为()A.生存B.社交C.自尊D.自我实现36.我国洗衣机行业正处于成熟期,生产厂家可以采用()A.集中决策B.收缩决策C.快速掠取决策D.产品改良决策37.市场营销观念的中心思想是:要达到一个企业的目标,除了比竞争者更有效地满足消费者的要求,关键在于判断目标市场的()A.需要B.欲望C.需求D.愿望38.在销售人员的激励中,由于佣金制度存在不少缺点,如管理费过高、导致销售人员的短期行为等,所以一般要把佣金制与下列哪种激励制度相结合()A.奖金制B.礼金制C.薪金制D.销售竞赛制39.在春节、中秋节、情人节等节日即将来临的时候,许多商家都大作广告。
以促销自己的产品。
他们对市场进行细分的方法是()A.地理细分B.人口细分C.心理细分D.行为细分40.将性质温和的婴儿洗发水推荐给留长发而且天天洗头的年轻人,这种把产品引导给某一特定顾客群体的市场定位,属于()A.产品特色定位B.使用者定位C.使用场合定位D.竞争者定位二、多选题(每题3分,共60分)1.定点超越的基本类型有()A.产品定点超越B.过程定点超越C.组织定点超越D.战略定点超越E.价格定点超越2.市场营销组合策略包括()A.产品策略B.价格策略C.公共关系策略D.促销策略E.分销渠道策略3.史蒂文斯(S. Stevens)将尺度分为()类型。
A.名义尺度B.顺序尺度C.间距尺度D.比例尺度E.度量尺度4.市场营销信息系统是企业收集、处理并利用相关环境数据的工具。
一般由四个子系统构成,它们是()A.内部报告系统B.市场营销情报系统C.市场营销调研系统D.市场营销分析系统E.市场营销网络系统5.以下()防御战略可供市场主导者选择。
A.阵地防御B.侧翼防御C.运动防御D.以攻为守E.收缩防御6.影响产业购买者决策的主要因素有()A.环境因素B.组织因素C.政治因素D.人际因素E.个人因素7.市场补缺者要完成的任务是()A.创造补缺市场B.扩大补缺市场C.完善补缺市场D.构架补缺市场E.保护补缺市场8.市场主导者为了维护自己的优势,保住自己的领先地位,通常可以采取的战略有()A.扩大市场需求总量B.保护市场占有率C.提高市场占有率D.攻击竞争者E.跟随竞争者9.市场定位的依据包括()A.产品特色定位B.顾客利益定位C.使用者定位D.使用场合定位E.竞争定位10.企业开展市场定位的主要思维方式和常用方法有()A.竞争定位B.初次定位C.对峙定位D.避强定位E.重新定位11.以下()属于心理定价策略。
A.声望定价B.差别定价C.尾数定价D.招徕定价E.分区定价12.无论渠道设计与管理如何完善,都会存在渠道冲突,渠道冲突的主要原因有()A.目标差异B.归属差异C.认知差异D.多头领导E.决策迟缓13.现今,企业营销从以往围绕4P制定营销组合转向4C,4C强化了以消费者需求为中心的营销组合,4C指的是()A.消费者B.个性C.成本D.沟通E.便利14.企业的社会责任有()A.保护消费者权益B.保护员工权益C.保护社会的利益和发展D.保持股东权益E.保护社会自然环境15.在罗斯的显要义务理论中,“显要义务”的基本内容包括()A.诚实B.感恩C.自由D.公正E.行善16.企业计划的演变包括()过程。
A.无计划阶段B.年度计划阶段C.季度计划阶段D.长期计划阶段E.战略计划阶段17.企业形象识别系统的构成因素包括()A.产品形象识别B.经营理念识别C.经营活动识别D.人员形象识别E.整体视觉识别18.市场主导者扩大市场需求量的主要方式有()A.提高产品质量B.降低产品价格C.发现新用户D.开辟新用途E.增加使用量19.市场主导者在保护自身产品的市场占有率方面,可供其选择的市场防御战略有()A.阵地防御B.侧翼防御C.反击防御D.运动防御E.收缩防御20.影响分销渠道设计的因素有()A.顾客特性B.产品特性C.中间商特性D.竞争特性E.企业特性和环境特性。