3试题
BEC第三辑test3真题（试题仅阅读部分）及参考答案
这是我根据文库里的一份资料单独整理出来的BEC第三辑TEST3，可能又不完整及缺漏之处，望大家能够理解。
谢谢! PART 11 This businessman has successfully targeted a different group of consumers.2 With careful forward planning, this businessman is helping the company survive a difficult period.3 The company is now more open to change because of this businessman's way of thinking.4 This businessman has made and implemented certain decisions despite opposition to them.5 This businessman has achieved some success by misleading people about his intentions.6 The abilities of this businessman were previously doubted by the company that employs him.7 This businessman is admired for his ability to manage a number of business interests.'Businessman of the Year' AwardA :James King: Chief Executive of Fentons FinanceKing was nominated for the quality of his leadership, with the judges claiming that the Fentons Finance boss is almost revered by his team. He is credited with reinventing Fentons Finance - revitalising its culture of inflexibility, removing outdated pre-merger barriers and playing a brilliant tactical game. He led everyone to believe he was opposed to large mergers and then jumped on the Westcombe Bank opportunity at just the right moment. History will be the judge, but for now the markets consider King to be a star.B Keith Nash: Chief Executive of Hamley's SupermarketsNash took over as CEO when Hamley's systems and distribution were out of date and the brand badly needed freshening up. He began refocusing the brand at the higher quality end of the food market and launched several own-brand initiatives for the health conscious. As a result, the share price has gone up nearly 80 per cent. This should be extremely satisfying for Nash, who had left the retailer in 1986, disappointed after failing to secure the top job.C Jorge Marquez: Chairman of the Kenwick GroupMarquez was a popular choice for his achievements at Kenwick. The judges say he has been courageous in pushing through the appointment of controversial or inexperienced chief executives to companies within the group, and then sponsoring them as they transformed their businesses. He operates as a 'virtual' chairman, without a permanent office in any one company. He phones his CEOs regularly, and several of them have acknowledged the vital contribution he makes to their effectiveness. Everyone is impressed at how he also finds the time to be chairman of two other large companies.D Richard Jenkins: Finance Director of Centron AdvertisingLabouring in the shadow of a high-profile boss can sometimes draw attention away from the finance director, and the judges considered it was high time Jenkins got that attention. The CEO may be the public face of Centron, but Jenkins is the one who makes it run smoothly. Behind the scenes, he is constantly demonstrating that budgets and forecasts are what is needed to make a company successful, particularly now that the advertising market has been hit by recession. It is largely thanks to him that Centron is in much better shape than its rivals.Part 2(这个可能分段有错误)Setting up an appraisal schemeAppraisals can be a wonderful opportunity for your staff to focus on their jobs and make plans to develop their unused potential. (0) ..........So, if you have decided that an appraisal scheme should be set up in your company, you need to establish some formal procedures and make some decisions before you begin. Even if your company already has a scheme, you need to consider what you want to achieve and how you are going to do this.First of all, you need to decide on your key objectives and the real purpose of your scheme.(8).............A scheme should never be introduced at a time of redundancies, or simply for profit or competitive edge, because this will create fear and alienate staff. The next step is to decide how the scheme can most successfully be managed. It is essential that all senior staff are committed to the process and willing to make a positive contribution.The person given responsibility for designing the scheme and the appraisal forms needs to have knowledge of all roles within the organisation. He or she must also be aware of employees' potential needs. (9).............It should be someone who is trusted and whom staff will turn to if they are concerned about their appointed appraiser or the appraisal interview. The design of the scheme should indicate who will be appraising whom. This needs great tact and sensitivity. First, remember that no manager can effectively appraise more than seven or eight people. It is equally important to remember that, if significant numbers of staff are appraised by someone they dislike, or by a person whose values they do not share, the success of your scheme may be threatened.(10) ............. So bear this in mind from the beginning and, if necessary, establish anappeals procedure.Having decided on your policy and who will appraise which members of staff, you need to communicate this in the simplest possible way. Avoid lengthy documents - few people will read them. (11).............Most organisations choose a person's line manager to be the appraiser. This can be seen as an opportunity or a threat, so be ready to consider alternatives if necessary.Once you have established the appraisal process, make sure that appraisal interviews take place at a convenient time, and ideally on neutral ground. It should be borne in mind that some appraisals may involve the disclosure of confidential information. (12) .............These will show the decisions that were taken during the interview and will also indicate any new performance targets that have been agreed.A It is important to select a manager who can deal effectively with any suspicions staff may have about appraisals.B Such a measure can also reduce insecurity and unite staff in recognising the positive elements of appraisal.C Having even one staff member in such a position may affect how others respond to the process.D Ideally, this should be to provide a supportive framework that aids staff development.E Simply make sure that staff know who will appraise them and why, and what form the interview will take.F It is therefore important to decide who will have access to written records of the appraisal.G They can also be a means of getting the best out of staff, both as individuals, and as team members.PART 3(这个可能分段也有错误)SHEER GENIUS - OR A WASTE OF TIME?Encourage your original thinkers and live with their strange habits, says Alan Worthin. If one of your research staff announced that he had worked out a way to propel a vehicle on a cushion of air, would you tell him to concentrate on something practical, or suggest taking it further? If a member of your development team asked if she could come in late because she had her best ideas at 3 am would you insist that she is in the office at 9 am like everyone else?Current business wisdom is that companies need creative, innovative people to beat competitors. The reality is that companies have always needed new ideas to survive and progress, but in the past they weren't particularly good at encouraging the people who produced them.Original thinkers don't always fit easily into the framework of an organisation. However, the advice from managing director, John Serrano is, 'Get rid of the dull people and encourage the unusual ones'. Essentially, he believes that companies need to learn how to manage their original thinkers in order to ensure that the business profits from their contribution. He also says, 'Original thinkers often find it difficult to drive change within the organisation, so they resign, feeling angry and disappointed. It is essential to avoid this.''You can't recognise original thinkers by the way they look,' says Ian Freeman. An apparently ordinary exterior can conceal a very creative thinker.' His consultancy, IBT Personnel, has devised a structured way to identify original thinkers. 'We define employees as champions, free-wheelers, bystanders and weak links, and most original thinkers come into the category of free-wheelers. They may miss deadlines if they become involved in something more interesting. They are passionate and highly motivated but have li ttle or no understanding of business directions and systems.'Headhunter George Solomon also thinks original thinkers have their disadvantages. 'They may have a bad influence within an organisation, especially given the current management trend for working in teams. The original thinkers themselves may be unaware of any problem, but having them around can be disruptive to colleagues. who have to be allowed to point out when they are being driven crazy by the original thinkers' behaviour.' Yet, in his opinion, the 'dream team' in any creative organisation consists of a balanced mixture of original thinkers and more practical, .realistic people.So, having identified your original thinkers, how do you handle them? One well-known computer games company has a very inventive approach. 'We encourage our games designers by creating an informal working environment,' says director Lorna Marsh. 'A company cannot punish risk-takers if it wants to encourage creativity. Management has to provide support, coaching and advice - and take the risk that new ideas may not work. Our people have flexible working hours and often make no clear distinction between their jobs and their home lives.'Original thinkers may fit into the culture of 21st century organisations, but more traditionalorganisations may have to change their approach. Business psychologist Jean Row believes that the first step is to check that original thinkers are worth the effort. 'Are the benefits they bring worth the confusion they cause? If so, give them what they want, allow plenty of space, but set clear limits. Give them extremely demanding targets. If they fail to meet them, then the game is up.But if they succeed, your organisation stands only to gain.'13 It is important for a company to encourage original thinkers because_____A this allows it to promote innovative products.B this enables it to stay ahead of its rivals.C they are very flexible about their working hours.D their talents are ideally suited to the market.14 John Serrano thinks that original thinkers should be_____A helped to develop better people management skills.B asked to manage change within the organisation.C supported so they can perform well for the company.D encouraged to follow company procedures.15 What does Ian Freeman say about original thinkers?A They are unenthusiastic and poorly motivated.B Their work standards are impossibly high.C Their abilities are hard to recognise.D They lack awareness of commercial processes.16 What problems can be observed when there are original thinkers in the workforce?A They may have a negative effect on other workers.B They dislike the concept of teamwork.C They rush tasks through to completion.D They cannot work with less creative colleagues.17 In what way is the games company's approach to original thinkers special?A It allows them to work from home whenever they wish.B It uses different forms of disciplinary action for them.C It promotes a relaxed atmosphere in the workplace.D It encourages them to reduce the risks that they take.18 A traditional organisation wishing to employ original thinkers needs to _____A provide them with projects they are interested in.B assess whether their contribution makes up for any problems.C have a flexible approach if goals are not always achieved.D be prepared to handle any negative feedback from colleagues.PART 4Who Benefits Most from Company Training?According to recent research, the better educated and the higher up the socio.economic scale you are, the more likely you are to be offered workplace training. And, incidentally, the more likely you are to then turn (19) the offer, pleading family and personal commitments or (20) of work. Less qualified staff, on the other hand, are offered fewer training opportunities, but are more eager to (21) them up. In fact, people with few or no educational qualifications are three times morelikely to accept training when it is offered.In the majority of companies, more (22) are allocated to management training than to other areas. Employers (23) their better qualified staff as more important to the business, so they pay them accordingly and invest more in them in (24) of training. This is (25) by the fact that organisations are dependent on properly (26) managers making the right decisions. But this (27) may mean that companies are (28) other parts of the workforce down.The researchers found a growing demand for training among the lower-skilled.Unfortunately this demand is not being (29)by employers, even though there are strong indications that companies would benefit from doing so. They also discovered that, despite the substantial (30) between the training provided for managers and that offered to other staff, there was still widespread endorsement of training.For the purposes of the research, training was defined as any (31) of planned instruction or tuition provided by an employer with the aim of helping employees do their work better. It therefore included a wide variety of approaches. On-the-job and classroom training (32) to be used equally by employers. But learning on the job, which involved observing a certain procedure and then practising it, was easily the most popular method for all categories of employee. While many felt that learning from colleagues was best,very few (33) the internet as an effective way to train.19 A back B over C down D off20 A force B pressure C strain D load21 A pick B keep C take D put22 A means B reserves C finances D resources23 A imagine B regard C suppose D know24 A requirements B specifications C states D terms25 A allowed B approved C justified D accepted26 A understanding B intelligent C informed D knowledgeable27 A stress B emphasis C weight D strength28 A letting B cutting C breaking D setting29 A reached B achieved C gained D met30 A space B gap C hole D room31 A frame B structure C form D order32 A showed B appeared C demonstrated D presented33 A rated B thought C marked D believedPART 5 没有找到答案PART 1 答案《‘Businessman of the Year' Award》年度企业家奖。
教师资格证-高等教育学试题3
B.高等教育评价
C.高等教育问责
D.高等教育管理
3,1632年出版的高等教育研究著作《大教学论》的作者是（）。答B
A赫尔巴特
B.夸美纽斯
C.泰勒
D.斯宾塞
4,高等教育评价可包括高校的自我评价、政府的行政性评价和社会的第三方评价，其中最为基础的评价是（）答A
A高校的自我评价
B.政府的行政性评价
A学科体系规划
B.学科基地建设
C.学科内容建设
D.学科建设管理
15,高等学校（）是指为学生所制订的基于高深学问中的普通知识与特定专业知识的学习、研究和行动方案及其实施过程。答D
A教学目标
B.教学大纲
C.教学计划
D.课程
16,高校管理活动的“行政化”主要体现为决策主体过于单一，教授集体难以有效参与校务决策。具体表现为（）等几个主要方面。答ABCD
A部分督导
B.专项督导
C.个体督导
D.完全督导
12,高等学校的学科建设是高校提高有关学科教学、科研能力的过程，是以学科发展变化为基础的社会行为。高等学校学科建设的核心内容包括五个方面，其中（）是高等学校学科建设的关键。答C
A学科体系规划
B.学科方向建设
C.学科梯队建设
D.学科基地建设
13,高等学校教育制度是各级各类高等学校以及它们之间相互关系的总称。下列关于高等学校教育制度作用的表述中，正确的是（）。答ABCD
A院校性
B.学科性
C.社会性
D.个体性
19,高校教师在职业劳动过程中形成的情感及意志结构、心理结构、稳定的道德意识和个体内在的行为倾向，指的是高校教师的（）。答D
A专业知识
B.专业精神
C.专业信仰
科目三试题及答案
科目三试题及答案一、选择题1. 驾驶汽车时，遇到前方有行人横穿马路，应该：A. 加速通过B. 减速让行C. 鸣笛警告D. 紧急刹车答案：B2. 当车辆在高速公路上行驶时，遇到紧急情况需要停车，应该：A. 立即停车B. 缓慢停车C. 停在应急车道D. 停在行车道上答案：C3. 车辆在夜间行驶时，使用远光灯的条件是：A. 任何时候B. 遇到对向车辆时C. 无路灯照明的路段D. 遇到行人或骑自行车的人答案：C二、判断题1. 驾驶员在驾驶过程中，可以边开车边使用手机。
答案：错误2. 车辆在通过铁路道口时，应减速慢行，注意观察。
答案：正确3. 车辆在高速公路上行驶时，可以随意变更车道。
答案：错误三、简答题1. 请简述在雨天驾驶时应注意的事项。
答案：在雨天驾驶时，应注意以下事项：- 降低车速，保持安全距离。
- 开启雨刷器，确保视线清晰。
- 避免急刹车，以防车辆打滑。
- 注意路面积水，避免驶入深水区域。
2. 描述在雾天驾驶时应采取的安全措施。
答案：在雾天驾驶时，应采取以下安全措施：- 打开雾灯，提高车辆的可见度。
- 降低车速，增加与前车的安全距离。
- 使用喇叭提醒其他车辆自己的存在。
- 避免使用远光灯，因为它们会在雾中产生眩光。
四、案例分析题1. 某日，驾驶员甲在高速公路上行驶，突然前方出现紧急情况，甲采取了紧急刹车，导致后方车辆乙追尾。
请问甲和乙的责任如何划分？答案：根据交通法规，驾驶员甲在紧急情况下采取紧急刹车是合理的避险行为，但应尽量提前观察路况，提前减速，并通过灯光或喇叭提醒后方车辆。
驾驶员乙应保持安全距离，注意前方车辆的行驶状态，及时做出反应。
因此，乙应承担主要责任，甲无责或承担次要责任。
2. 驾驶员丙在夜间行驶时，未开启前照灯，导致对向车辆驾驶员丁视线受阻，发生碰撞。
请问丙和丁的责任如何划分？答案：驾驶员丙在夜间行驶时未开启前照灯，违反了交通法规，应承担主要责任。
驾驶员丁在遇到对向车辆未开启前照灯的情况下，也应减速慢行，注意观察，因此丁也应承担一定的责任。
科目三试题及答案
科目三试题及答案科目三是驾驶员考试中的一项重要环节，它主要考察考生在道路驾驶中的实际应用能力。
为了帮助广大驾驶员考生更好地备考科目三，下面将提供一些常见的科目三试题及答案，希望对大家有所帮助。
一、交通信号灯试题1. 在绿灯亮起时，你应该怎么做？答案：在绿灯亮起时，表示可以通行。
驾驶员应该确认路况安全，确保没有其他交通工具通过，并适当控制车速通过路口。
2. 在黄灯亮起时，你应该怎么做？答案：在黄灯亮起时，表示即将变成红灯，驾驶员应该根据具体情况判断是否停车。
如果已经过了停车线或临近停车线，为了保证交通流畅和行车安全，驾驶员可以加速通过路口。
如果距离停车线较远，应该适当减速准备停车。
3. 在红灯亮起时，你应该怎么做？答案：在红灯亮起时，表示禁止通行。
驾驶员应该停在停车线前等候，直到信号灯变成绿灯才能继续前行。
同时，要注意观察四周车辆的动向，确保安全。
二、直行、转弯试题1. 在直行时，你应该注意哪些事项？答案：在直行时，应该注意以下事项：- 确认自己的直行方向和车道，不要偏离道路中心线。
- 观察前方和两侧的交通状况，确保安全。
- 控制车速，不要超速或过慢。
- 在需要变更车道时，应提前打转向灯并确保确保通过车后方和侧方车辆同意。
2. 在左转弯时，你应该注意哪些事项？答案：在左转弯时，应该注意以下事项：- 提前观察路口交通信号灯的指示，确保安全。
- 保持与道路中心线平行行驶，并注意不要偏离自己的转弯车道。
- 在进入交叉口之前减速，确保安全通过。
- 在转弯过程中，注意观察右侧和前方来车，确保不会造成交通事故。
3. 在右转弯时，你应该注意哪些事项？答案：在右转弯时，应该注意以下事项：- 确保右转弯是合法的，没有禁止右转的标志。
- 观察前方和左侧车辆的动向，确保安全。
- 提前打转向灯，与右侧车道保持一定的距离，减速慢行。
- 在转弯过程中，注意观察左侧和前方来车，确保安全通过。
三、掉头、倒车试题1. 如何安全进行掉头操作？答案：进行掉头操作时，应该注意以下事项：- 确保掉头操作是在允许掉头的地方进行，没有禁止掉头的标志。
评标专家培训考试试题3
省交通工程评标专家培训考试试题（三）一、单项选择题（共20题，每题2分，共40分。
每题的备选项中，只有1个最符合题意）1.评标委员会推荐的中标候选人应当限定在（）人。
AA、1～3B、1～5C、1～7D、2～32.《招标投标法》规定，评标专家占评标委员会总人数的（）以上，对评标委员会的整体水平有至关重要的影响。
CA、1/3B、1/2C、2/3D、3/43.评标委员会成员的名单在（）之前保密。
CA．合同签订 B．开标C．中标结果确定 D．评标报告备案4.《评标委员会和评标方法暂行规定》规定，评标委员会应当根据（）规定的评标标准和方法，对投标文件进行系统的评审和比较。
AA、招标文件B、行政监督部门C、法律法规D、评标委员会5.《招标投标法》规定，评标委员会成员如果发现存在依法不应参加评标工作的情况应立即（）。
CA、提出质疑B、披露并提出质疑C、披露并提出回避D、提出质疑并回避6.一个招标项目发生法定情况，无法继续进行评标推荐中标候选人，当次评标时评标委员会应（）。
BA、废标B、否决所有投标C、重新招标D、备案申请继续评标7.关于联合体投标，下列说法中不正确的是（）。
DA、两个以上法人或者组织可以组成一个联合体B、联合体成员不得在同一项目再以自己名义单独投标C、必须以一个投标人的身份共同投标D、招标人可以根据项目需要要求投标人组成联合体8.依法必须招标的项目，评标委员会成员未在评标报告中陈述不同意见和理由，也拒绝签字的，视为（）。
AA、同意评标结论B、评标结论待定C、弃权D、保留意见9、每次评标结束后（），评标专家应及时对招标人或招标代理机构招标工作情况进行客观评价。
CA、1/2B、1/3C、1/4D、2/310.根据《江西省交通运输厅评标专家库管理办法》的规定，评标专家连续（）次被抽中均未参加的，暂停其评标专家资格一年。
DA、2B、3C、4D、511.关于评标价的偏差率计算公式正确的是（）。
计算机试题3
[1]. 在计算机内部，文字、图像等所有信息都采用__C______表示。
A.ASCII码B.拼音码C.二进位码D.汉字内码[2]. 总线型以太网采用CSMA/CD介质访问控制技术，因此总线上不会发生帧传输的冲突。
N[3]. 内存容量1GB等于___1024_____MB。
[4]. 第一代计算机主要应用于__D______。
A.数据处理B.工业控制C.人工智能D.科学计算[5]. Pentium处理器中包含了一组___B_____，用于临时存放参加运算的数据和运算得到的中间结果。
A.控制器B.寄存器C.整数ALUD.ROM[6]. 要发送电子邮件就需要知道对方的邮件地址，邮件地址包括邮箱名和邮箱所在的主机域名，两者中间用____@_____隔开。
[7]. 比较算法和程序，以下说法中正确的是____A____。
A.算法可采用“伪代码”或流程图等方式来描述B.程序只能用高级语言表示C.算法和程序是一一对应的D.算法就是程序[8]. 下列程序设计语言中不能用于数值计算的是___C_____ 。
A.FORTRANB.CC.HTMLD.MA TLAB[9]. 在数字通信系统中，表示数据传输可靠性的指标是___B_____。
A.传输速率B.误码率C.信道容量D.频带利用率[10]. 使用计算机进行文本编辑与文本处理是常见的两种操作，下面属于文本处理操作的是____D_____。
A.设置页面版式B.设置文章标题首行居中C.设置文本字体格式D.文语转换[11]. 计算机系统中所有实际物理装置的总称是计算机__硬件___。
[12]. 用户可以按照个人喜好设置自己计算机的IP地址，例如202.119.8.888。
N[13]. 显示屏的尺寸是显示器的主要参数之一，目前常用的显示器有15英寸、17英寸、19英寸等，CRT显示屏的水平与垂直方向之比一般为4:3。
Y[14]. 建立计算机网络的根本目的是____A____。
综合英语(3)试题及答案
11. C
12. C
13. A
14. D
15. A
16. D
17. A
18. A
19. C
20. D
Ⅲ. 第三部分(20分,每小题2分)
21. C
22. D
23. D
24. D
25. A
26. D
27. C
28. A
29. C
30. D
Ⅳ. 第四部分(15分,每小题3分) (答案并不一定要求与所给答案完全一样。符 合 句 意,无 语 法 错 误,得 3 分;基 本 符 合 句 意,无
homeandtheworkplace,and manyofthemostimportantdevelopmentsincomputertechnology
are based on laser.
(22160 号 )综 合 英 语 (3)答 案 第 1 页 (共 2 页 )
Ⅴ. 第五部分(25分)(答案略) 36. 评分标准: 21~25 很好。基本无语法错误、内容切题、结构合理、行文流畅。 16~20 较好。无重大语法错误、内容比较切题、结构比较合理、文字比较通顺。 10~15 差。语法错误很多、结构较乱、内容与题目要求不很一致、字数不够。 0~9 很差。语句不通、语法错误太多、文不对题、结构混乱。
试卷代号:22160
国 家 开 放 大 学2023年 秋 季 学 期 期 末 统 一 考 试
综合英语(3) 试题答案及评分标准
(供参考)
Ⅰ. 第一部分(20分,每小题2分)
2024 年 1 月
1. C
2. D
3. B
4. A
5. C
6. D
7. C
流行病学试题3
流行病学试题3流行病学试题41. 下列那种说法正确，流行病学是：A. 从体的角度研究疾病与健康B．只研究慢性病的危险因素C．只研究疾病的预防D．只研究传染病的流行和防治E．研究人群中疾病和健康状况的分布及其影响因素2. 流行病学研究中所指的群体是A. 只限于一个家庭B．只限于非病人C．一定范围内的人群D．只限于全人类E．只限于病人3. 流行病学的特征A. 群体特征B．以分布为起点的特征C．预防为主的特征D．对比的特征E．以上均是4. 流行病学的主要研究方法包括：A. 描述性研究B. 分析性研究C. 实验性研究D. 理论性研究E. 以上均是5. 第二次卫生革命的任务A. 防治传染病B. 治理水源C．慢性非传染病的防治D．研究治疗方案E．以上均不对6. 流行病学研究对象的三个层次A. 病人，非病人，一般人群B. 疾病，伤害，健康C. 传染病，慢性病，伤害D. 身体，精神，社会E. 以上均不对7. 欲调查某病在某地的危害状况，进行现况调查，宜选用A. 普查B．抽样调查C．典型病例调查D．住院病例调查E．个案调查8. 对病因不明的疾病，描述性研究的主要任务A. 因果推断B．寻找病因线索，提出病因假设C．验证病因D．确定病因E．以上均不是9.A. 为了早发现，早诊断，早治疗宫颈癌B．为了调查大学生乙肝感染情况，可不必调查所有大学生C．一次聚餐引起的食物中毒调查D．在健康人群中发现可疑的肺结核的调查E. 对个别发生的艾滋病进行调查1．抽样调查2．普查3．筛选10. 在沿江农村用皮肤试验来筛检肝血吸虫病，试验结果见表试验肝血吸虫病合计有无阳性117 53 170阴性8 312 320合计125 365 490(1)该试验的正确指数A. 1.79B. 0.79C. 0.94D. 0.85E. 0.15(2)该试验的阳性预测值A. 0.69B. 0.98C. 0.02D. 0.94E. 0.79(3)该试验的假阳性率A. 0.06B. 0.21C. 0.15D. 0.02E. 0.6911. 以下符合生态学研究的特点的是A. 属于分析流行病学B．以个体为观察分析单位C．群体水平上研究因素与疾病之间的关系D．确定病因E．以上均不是12. 以下关于描述性研究正确地是A. 主要描述分布的三大特征：时间，地区，人群B．无需设立对照C．不能分析暴露与效应之间的联系D．是分析流行病学的基础E．以上均是13. 有人用红外线扫描和X线摄片两种方法在一批妇女中筛检乳腺癌，试验结果见表试验结果乳腺癌红外扫描X线摄片有无+ + 40 20+ - 10 20- + 30 10- - 20 2450合计100 25001. 两种方法并联使用，所得的灵敏度A. 0.39B. 0.80C. 0.98D. 0.99E. 0.602. 两种方法并联使用，所得的特异度A. 0.39B. 0.80C. 0.98D. 0.99E. 0.603. 两种方法串联使用，所得的假阴性率A. 0.39B. 0.80C. 0.98D. 0.99E. 0.604．两种方法串联使用，所得的正确指数A. 0.39B. 0.80C. 0.98D. 0.99E. 0.6014. 下列哪种说法是正确的？A发病率和患病率是一样的B现患率和患病率是不一样的C患病率指一定时期内特定人群中发生某病的新病例的频率D发病率指某特定时期内人口中新旧病例所占的比例E. 发病率的分母中不包括具有免疫力和现患病而不会发病的人15. 下列哪个指标是用于测定发病率不准确且病死率极低的传染病的流行强度的? A病死率B现患率C超额死亡率D累积死亡率E罹患率16. 疾病的三间分布包括：A年龄、性别和种族B职业、家庭和环境C国家、地区和城乡D短期波动、季节性和周期性E时间、地区和人间分布17. 罹患率可以表示为：A（观察期内的病例数÷同期平均人口数）×100%B（观察期内的新病例数÷同期暴露人口数）×100%C（一年内的新病例数÷同年暴露人口数）×100%D（观察期内的新病例数÷同期平均人口数）×100%E（观察期内的新旧病例数÷同期暴露人口数）×100%18. 衡量疾病危险程度的指标是：A患病率B感染率C引入率D发病率E 续发率19. 满足患病率=发病率×病程的条件是：A在相当长的时间内，发病率相当稳定B在相当长的时间内，病程相当稳定C在相当长的时间内，患病率相当稳定D在相当长的时间内，当地人口相当稳定E在相当长的时间内，发病率和病程都相当稳定20. 用潜在减寿年数来评价疾病对人群健康影响的程度，能消除：A 地区构成不同对预期寿命损失的影响B 性别构成不同对预期寿命损失的影响C 年龄构成不同对预期寿命损失的影响D 疾病构成不同对预期寿命损失的影响E 以上均不正确21. 某地流感爆发流行，经调查该地3789人中当月有837人发生流感，些人中有14人曾在一个月前发生过感冒，计算得837/3789=22.1%，这个率应是A 罹患率B 患病率C 发病率D 续发率E 感染率22. 伤残调整寿命年是指：A 因早死所致的寿命损失年B 因伤残所致的寿命损失年C 因伤残而存活的寿命年D 从发病到死亡所损失的全部健康寿命年E 以上均不正确23.移民流行病学是对移民人群的疾病分布进行研究，以探讨病因。
电工试题3
标准答案：错
50. SELV只作为接地系统的电击保护。
考生答案：
标准答案：错
51.变配电设备应有完善的屏护装置。
考生答案：
标准答案：对
52. RCD后的中性线可以接地。
考生答案：
标准答案：错
53. RCD的选择,必须考虑用电设备和电路正常泄漏电流的影响。
考生答案：
标准答案：对
54. <p> 10kV以下运行的阀型避雷器的绝缘电阻应每年测量一次。</p>
电工试题3
一、判断题（判断下列各题的对错，并在正确题后面的括号内打“√”错误题后面的括号内打“×”。本大题共70个小题，每小题1分，共70分）
1.用钳表测量电动机空转电流时,可直接用小电流档一次测量出来。
考生答案：
标准答案：错
2.使用万用表测量电阻,每换一次欧姆档都要进行欧姆调零。
考生答案：
标准答案：对
考生答案：
标准答案：对
63.刀开关在作隔离开关选用时,要求刀开关的额定电流要大于或等于线路实际的故障电流。
考生答案：
标准答案：错
64.中间继电器实际上是一种动作与释放值可调节的电压继电器。
考生答案：
标准答案：错
65.接触器的文字符号为FR。
考生答案：
标准答案：错
66.交流接触器的额定电流,是在额定的工作条件下所决定的电流值。
28.Ⅱ类手持电动工具比Ⅰ类工具安全可靠。
考生答案：
标准答案：对
29.手持式电动工具接线可以随意加长。
考生答案：
标准答案：错
30.电机在正常运行时,如闻到焦臭味,则说明电动机速度过快。
考生答案：
标准答案：错
2020年高考理数全国卷3 试题详解
2020年普通高等学校招生全国统一考试理科数学注意事项：1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上．2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑.如需改动，用橡皮擦干净后，再选涂其他答案标号.回答非选择题时，将答案写在答题卡上.写在本试卷上无效.3．考试结束后，将本试卷和答题卡一并交回.一、选择题：本题共12小题，每小题5分，共60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{(,)|,,}A x y x y y x =∈≥*N ，{(,)|8}B x y x y =+=，则A B 中元素的个数为（）A.2 B.3C.4D.6【答案】C【解析】∵A B 中的元素满足8y xx y ≥⎧⎨+=⎩，且*,x y N ∈，∴满足8x y +=的有(1,7),(2,6),(3,5),(4,4),∴A B 中元素的个数为4.故选C.2.复数113i-的虚部是（）A.310-B.110-C.110D.310【答案】D 【解析】∵1131313(13)(13)1010i z i i i i +===+--+，∴113z i =-的虚部为310.故选D.3.在一组样本数据中，1，2，3，4出现的频率分别为1234,,,p p p p ，且411i i p ==∑，则下面四种情形中，对应样本的标准差最大的一组是（）A.14230.1,0.4p p p p ====B.14230.4,0.1p p p p ====C.14230.2,0.3p p p p ====D.14230.3,0.2p p p p ====【答案】B【解析】对于A 选项，数据的平均数为()()140.1230.4 2.5A x =+⨯++⨯=，方差为()()()()222221 2.50.12 2.50.43 2.50.44 2.50.10.65A s =-⨯+-⨯+-⨯+-⨯=；对于B 选项，数据的平均数为()()140.4230.1 2.5B x =+⨯++⨯=，方差为()()()()222221 2.50.42 2.50.13 2.50.14 2.50.4 1.85B s =-⨯+-⨯+-⨯+-⨯=；对于C 选项，数据的平均数为()()140.2230.3 2.5C x =+⨯++⨯=，方差为()()()()222221 2.50.22 2.50.33 2.50.34 2.50.2 1.05C s =-⨯+-⨯+-⨯+-⨯=；对于D 选项，该组数据的平均数为()()140.3230.2 2.5D x =+⨯++⨯=，方差为()()()()222221 2.50.32 2.50.23 2.50.24 2.50.3 1.45D s =-⨯+-⨯+-⨯+-⨯=.综上，B 选项这一组的标准差最大.故选B.4.Logistic 模型是常用数学模型之一，可应用于流行病学领城．有学者根据公布数据建立了某地区新冠肺炎累计确诊病例数I (t )(t 的单位：天)的Logistic 模型：0.23(53)()=1e t I K t --+，其中K 为最大确诊病例数．当I (*t )=0.95K 时，标志着已初步遏制疫情，则*t 约为（）（ln19≈3）A.60 B.63C.66D.69【答案】C 【解析】()()0.23531t K I t e--=+ ，∴()()0.23530.951t KI t K e **--==+，则()0.235319t e *-=，∴()0.2353ln193t *-=≈，解得353660.23t *≈+≈.故选C.5.设O 为坐标原点，直线2x =与抛物线C ：22(0)y px p =>交于D ，E 两点，若OD OE ⊥，则C 的焦点坐标为（）A.1,04⎛⎫ ⎪⎝⎭B.1,02⎛⎫ ⎪⎝⎭C.(1,0)D.(2,0)【答案】B【解析】∵直线2x =与抛物线22(0)y px p =>交于,E D 两点且OD OE ⊥，根据抛物线的对称性可以确定4DOx EOx π∠=∠=，∴()2,2D ，代入抛物线方程44p =，求得1p =，∴其焦点坐标为1(,0)2，故选B.6.已知向量,a b 满足||5a =，||6b =，6a b ⋅=-，则cos ,=+a a b （）A.3135-B.1935-C.1735D.1935【答案】D【解析】∵5a = ,6b = ,6a b ⋅=-，∴()225619a a b a a b ⋅+=+⋅=-= .∴7a b +=，∴()1919cos ,5735a a b a a b a a b⋅+<+>===⨯⋅+ .故选D.7.在△ABC 中，cos C =23，AC =4，BC =3，则cos B =（）A.19B.13C.12D.23【答案】A【解析】∵在ABC ∆中，2cos 3C =，4AC =，3BC =根据余弦定理2222cos AB AC BC AC BC C=+-⋅⋅2224322433AB =+-⨯⨯⨯,可得29AB =,即3AB =22299161cos 22339AB BC AC B AB BC +-+-===⋅⨯⨯,故1cos 9B =.故选A.8.下图为某几何体的三视图，则该几何体的表面积是（）A.B.C.D.【答案】C【解析】根据三视图特征，在正方体中截取出符合题意的立体图形根据立体图形可得：12222ABC ADC CDB S S S ===⨯⨯=△△△根据勾股定理可得：AD DB ==∴ADB △是边长为根据三角形面积公式可得：211sin 6022ADB S ABAD =⋅⋅︒=⋅△∴该几何体的表面积是632=⨯++ C.9.已知2tan θ–tan(θ+π4)=7，则tan θ=（）A.–2B.–1C.1D.2【答案】D【解析】2tan tan 74πθθ⎛⎫-+= ⎪⎝⎭ ,∴tan 12tan 71tan θθθ+-=-，令tan ,1t t θ=≠，则1271tt t+-=-，整理得2440t t -+=，解得2t =，即tan 2θ=.故选D.10.若直线l 与曲线y 和x 2+y 2=15都相切，则l 的方程为（）A.y =2x +1 B.y =2x +12 C.y =12x +1 D.y =12x +12【答案】D【解析】设直线l 在曲线y =上的切点为(0x ，则00x >，函数y =的导数为y '=，则直线l的斜率k=，设直线l 的方程为)0y x x =-，即00x x -+=，由于直线l与圆2215x y+==，两边平方并整理得2005410x x --=，解得01x =，015x =-（舍），则直线l 的方程为210x y -+=，即1122y x =+.故选D.11.设双曲线C ：22221x y a b-=（a >0，b >0）的左、右焦点分别为F 1，F 2，离心率为5．P 是C 上一点，且F 1P ⊥F 2P ．若△PF 1F 2的面积为4，则a =（）A.1 B.2 C.4 D.8【答案】A【解析】∵5ca=，∴5c a =，根据双曲线的定义可得122PF PF a -=，12121||42PF F PF F S P =⋅=△，即12||8PF PF ⋅=，∵12F P F P ⊥，∴()22212||2PF PF c +=，∴()22121224PF PF PF PF c -+⋅=，即22540a a -+=，解得1a =，故选A.12.已知55<84，134<85．设a =log 53，b =log 85，c =log 138，则（）A.a <b <c B.b <a <c C.b <c <a D.c <a <b 【答案】A【解析】由题意可知a 、b 、()0,1c ∈，58log 3lg3lg8log 5lg5lg5a b ==⋅()22221lg3lg8lg3lg8lg 24122lg5lg 25lg5⎛⎫⎛⎫++⎛⎫<⋅==<⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭，∴a b <；由8log 5b =，得85b =，由5458<，得5488b <，∴54b <，可得45b <；由13log 8c =，得138c =，由45138<，得451313c <，∴54c >，可得45c >.综上所述，a b c <<.故选A.二、填空题：本题共4小题，每小题5分，共20分.13.若x ，y 满足约束条件0,201,x y x y x +≥⎧⎪-≥⎨⎪≤⎩，，则z =3x +2y 的最大值为_________．【答案】7【解析】不等式组所表示的可行域如图∵32z x y =+，∴322x z y =-+，易知截距2z越大，则z 越大，平移直线32xy =-，当322x zy =-+经过A 点时截距最大，此时z 最大，由21y x x =⎧⎨=⎩，得12x y =⎧⎨=⎩，(1,2)A ，∴max 31227z =⨯+⨯=.故答案为7.14.262()x x+的展开式中常数项是__________（用数字作答）．【答案】240【解析】 622x x ⎛⎫+ ⎪⎝⎭,其二项式展开通项()62612rrr r C x x T -+⎛⎫⋅⋅ ⎪⎝⎭=1226(2)r r r r x C x --⋅=⋅1236(2)r r r C x -=⋅，令1230r -=得4r =,∴622x x ⎛⎫+ ⎪⎝⎭的展开式中常数项是664422161516240C C ⋅=⋅=⨯=.15.已知圆锥的底面半径为1，母线长为3，则该圆锥内半径最大的球的体积为_________．【解析】易知半径最大球为圆锥的内切球，球与圆锥内切时的轴截面如图所示，其中2,3BC AB AC ===，且点M 为BC 边上的中点，设内切圆的圆心为O，由于AM =，∴122S =⨯⨯=△ABC 设内切圆半径为r ，则ABC AOB BOC AOCS S S S =++△△△△111222AB r BC r AC r =⨯⨯+⨯⨯+⨯⨯()13322r =⨯++⨯=解得r =，其体积34233V r π==.故答案为3.16.关于函数f （x ）=1sin sin x x+有如下四个命题：①f （x ）的图像关于y 轴对称．②f （x ）的图像关于原点对称．③f （x ）的图像关于直线x =2π对称．④f （x ）的最小值为2．其中所有真命题的序号是__________．【答案】②③【解析】∵152622f π⎛⎫=+= ⎪⎝⎭,152622f π⎛⎫-=--=- ⎪⎝⎭,则66ff ππ⎛⎫⎛⎫-≠ ⎪ ⎪⎝⎭⎝⎭,∴函数()f x 的图象不关于y 轴对称，命题①错误；∵函数()f x 的定义域为{},x x k k Z π≠∈，定义域关于原点对称，()()()()111sin sin sin sin sin sin f x x x x f x x x x ⎛⎫-=-+=--=-+=- ⎪-⎝⎭，∴函数()f x 的图象关于原点对称，命题②正确；11sin cos 22cos sin 2f x x x x x πππ⎛⎫⎛⎫-=-+=+⎪ ⎪⎛⎫⎝⎭⎝⎭- ⎪⎝⎭ ，11sin cos 22cos sin 2f x x x x x πππ⎛⎫⎛⎫+=++=+ ⎪ ⎪⎛⎫⎝⎭⎝⎭+ ⎪⎝⎭，则22f x f x ππ⎛⎫⎛⎫-=+ ⎪ ⎪⎝⎭⎝⎭，∴函数()f x 的图象关于直线2x π=对称，命题③正确；∵当0x π-<<时，sin 0x <，则()1sin 02sin f x x x=+<<，命题④错误.∴答案为②③.三、解答题：共70分.解答应写出文字说明、证明过程或演算步骤.第17~21题为必考题，每个试题考生都必须作答.第22、23题为选考题，考生根据要求作答.（一）必考题：共60分.17.设数列{a n }满足a 1=3，134n n a a n +=-．（1）计算a 2，a 3，猜想{a n }的通项公式并加以证明；（2）求数列{2n a n }的前n 项和S n ．【答案】（1）25a =，37a =，21n a n =+，证明见解析；（2）1(21)22n n S n +=-⋅+.【解析】（1）由题意可得2134945a a =-=-=，32381587a a =-=-=，由数列{}n a 的前三项可猜想数列{}n a 是以3为首项，2为公差的等差数列，即21n a n =+，证明如下：当1n =时，13a =成立；假设n k =时，21k a k =+成立.那么1n k =+时，1343(21)4232(1)1k k a a k k k k k +=-=+-=+=++也成立.∴对任意的*n N ∈，都有21n a n =+成立；（2）由（1）可知，2(21)2n nn a n ⋅=+⋅231325272(21)2(21)2n n n S n n -=⨯+⨯+⨯++-⋅++⋅ ，①23412325272(21)2(21)2n n n S n n +=⨯+⨯+⨯++-⋅++⋅ ，②由①-②得()23162222(21)2n n n S n +-=+⨯+++-+⋅ ()21121262(21)212n n n -+-=+⨯-+⋅⨯-1(12)22n n +=-⋅-，即1(21)22n n S n +=-⋅+.18.某学生兴趣小组随机调查了某市100天中每天的空气质量等级和当天到某公园锻炼的人次，整理数据得到下表（单位：天）：锻炼人次空气质量等级[0，200](200，400](400，600]1（优）216252（良）510123（轻度污染）6784（中度污染）72（1）分别估计该市一天的空气质量等级为1，2，3，4的概率；（2）求一天中到该公园锻炼的平均人次的估计值（同一组中的数据用该组区间的中点值为代表）；（3）若某天的空气质量等级为1或2，则称这天“空气质量好”；若某天的空气质量等级为3或4，则称这天“空气质量不好”．根据所给数据，完成下面的2×2列联表，并根据列联表，判断是否有95%的把握认为一天中到该公园锻炼的人次与该市当天的空气质量有关？人次≤400人次>400空气质量好空气质量不好附：22()()()()()n ad bc K a b c d a c b d -=++++，P (K 2≥k )0.0500.0100.001k3.8416.63510.828【答案】（1）该市一天的空气质量等级分别为1、2、3、4的概率分别为0.43、0.27、0.21、0.09；（2）350；（3）有，理由见解析.【解析】（1）由频数分布表可知，该市一天的空气质量等级为1的概率为216250.43100++=，等级为2的概率为510120.27100++=，等级为3的概率为6780.21100++=，等级为4的概率为7200.09100++=；（2）由频数分布表可知，一天中到该公园锻炼的人次的平均数为100203003550045350100⨯+⨯+⨯=（3）22⨯列联表如下：人次400≤人次400>空气质量不好3337空气质量好228()221003383722 5.820 3.84155457030K ⨯⨯-⨯=≈>⨯⨯⨯，∴有95%的把握认为一天中到该公园锻炼的人次与该市当天的空气质量有关.19.如图，在长方体1111ABCD A B C D -中，点,E F 分别在棱11,DD BB 上，且12DE ED =，12BF FB =．（1）证明：点1C 在平面AEF 内；（2）若2AB =，1AD =，13AA =，求二面角1A EF A --的正弦值．【答案】（1）证明见解析；（2）427.【解析】（1）在棱1CC 上取点G ，使得112C G CG =，连接DG 、FG 、1C E 、1C F ，在长方体1111ABCD A B C D -中，//AD BC 且AD BC =，11//BB CC 且11BB CC =，∵112C G CG =，12BF FB =，∴112233CG CC BB BF ===且CG BF =，∴四边形BCGF 为平行四边形，则//AF DG 且AF DG =，同理可证四边形1DEC G 为平行四边形，∴1//C E DG 且1C E DG =，∴1//C E AF 且1C E AF =，则四边形1AEC F 为平行四边形，∴点1C 在平面AEF 内；（2）以点1C 为坐标原点,11C D 、11C B 、1C C 所在直线分别为x 、y 、z 轴建立如下图所示的空间直角坐标系1C xyz -，则()2,1,3A 、()12,1,0A 、()2,0,2E 、()0,1,1F ，()0,1,1AE =-- ，()2,0,2AF =-- ，()10,1,2A E =- ，()12,0,1A F =-，设平面AEF 的法向量为()111,,m x y z =，由00m AE m AF ⎧⋅=⎪⎨⋅=⎪⎩，得11110220y z x z --=⎧⎨--=⎩取11z =-，得111x y ==，则()1,1,1m =-，设平面1A EF 的法向量为()222,,n x y z =，由1100n A E n A F ⎧⋅=⎪⎨⋅=⎪⎩，得22222020y z x z -+=⎧⎨-+=⎩，取22z =，得21x =，24y =，则()1,4,2n =，cos ,7m n m n m n⋅<>===⋅，设二面角1A EF A --的平面角为θ，则cos 7θ=，∴sin 7θ==.∴二面角1A EF A --的正弦值为7.20.已知椭圆222:1(05)25x y C m m +=<<的离心率为4，A ，B 分别为C 的左、右顶点．（1）求C 的方程；（2）若点P 在C 上，点Q 在直线6x =上，且||||BP BQ =，BP BQ ⊥，求APQ 的面积．【答案】（1）221612525x y +=；（2）52.【解析】（1） 222:1(05)25x y C mm +=<<,∴5a =，bm =，∴离心率4c ea ====，解得54m =或54m =-(舍)，∴C 的方程为22214255x y ⎛⎫ ⎪⎝⎭+=，即221612525x y +=；（2）不妨设P ,Q 在x 轴上方，点P 在C 上，点Q 在直线6x =上，且||||BP BQ =,BP BQ ⊥，过点P 作x 轴垂线，交点为M ，设6x =与x 轴交点为N 根据题意画出图形，如图∵||||BP BQ =,BP BQ ⊥,90PMB QNB ∠=∠=︒，又 90PBM QBN ∠+∠=︒,90BQN QBN ∠+∠=︒，∴PBM BQN ∠=∠,∴PMB BNQ ≅△△，221612525x y +=，∴(5,0)B ，∴651PM BN ==-=，设P 点为(,)P P x y ，可得P 点纵坐标为1P y =，将其代入221612525x y +=，可得21612525P x +=，解得3P x =或3P x =-，∴P 点为(3,1)或(3,1)-，①当P 点为(3,1)时，532MB =-=，PMB BNQ ≅△△，∴||||2MB NQ ==，∴Q 点为(6,2)，画出图象，如图 (5,0)A -,(6,2)Q ,∴直线AQ 的直线方程211100x y -+=，∴P 到直线AQ的距离为5d ===，∴AQ ==，APQ ∆面积为15252⨯=；②当P 点为(3,1)-时，5+38MB ==，PMB BNQ ≅△△，∴||||8MB NQ ==，∴Q 点为(6,8)，画出图象，如图(5,0)A -,(6,8)Q ，可求得直线AQ 的直线方程为811400x y -+=，∴P 到直线AQ 的距离为：d===，AQ ==，∴APQ ∆面积为522=，综上所述,APQ ∆面积为52.21.设函数3()f x x bx c =++，曲线()y f x =在点(12，f (12))处的切线与y 轴垂直．（1）求b ．（2）若()f x 有一个绝对值不大于1的零点，证明：()f x 所有零点的绝对值都不大于1．【答案】（1）34b =-；（2）证明见解析【解析】（1）因为'2()3f x x b =+，由题意，'1()02f =，即21302b ⎛⎫⨯+= ⎪⎝⎭，则34b =-；（2）由（1）可得33()4f x x x c =-+，'2311()33()()422f x x x x =-=+-，令'()0f x >，得12x >或21x <-；令'()0f x <，得1122x -<<，∴()f x 在11(,22-上单调递减，在1(,)2-∞-，1(,)2+∞上单调递增，且111111(1),(),(,(1)424244f c f c f c f c -=--=+=-=+，若()f x 所有零点中存在一个绝对值大于1的零点0x ，则(1)0f ->或(1)0f <，即14c >或14c <-.当14c >时,111(1)0,()0424f c f c -=->-=+>，111(0,(1)0244f c f c =->=+>又32(4)6434(116)0f c c c c c c -=-++=-<，由零点存在性定理知()f x 在(4,1)c --上存在唯一一个零点0x ，即()f x 在(,1)-∞-上存在唯一一个零点，在(1,)-+∞上不存在零点，此时()f x 不存在绝对值不大于1的零点，与题设矛盾；当14c <-时,111(1)0,()0424f c f c -=-<-=+<，111()0,(1)0244f c f c =-<=+<又32(4)6434(116)0f c c c c c c -=++=->，由零点存在性定理知()f x 在(1,4)c -上存在唯一一个零点0x '，即()f x 在(1,)+∞上存在唯一一个零点，在(,1)-∞上不存在零点，此时()f x 不存在绝对值不大于1的零点，与题设矛盾；综上，()f x 所有零点的绝对值都不大于1.（二）选考题：共10分.请考生在第22、23题中任选一题作答.如果多做，则按所做的第一题计分.[选修4—4：坐标系与参数方程]（10分）22.在直角坐标系xOy 中，曲线C 的参数方程为22223x t t y t t ⎧=--⎨=-+⎩（t 为参数且t ≠1），C 与坐标轴交于A 、B 两点．2020年全国卷3理数第11页共11页（1）求||AB ；（2）以坐标原点为极点，x 轴正半轴为极轴建立极坐标系，求直线AB 的极坐标方程．【答案】（1）（2）3cos sin 120ρθρθ-+=【解析】（1）令0x =，则220t t +-=，解得2t =-或1t =（舍），则26412y =++=，即(0,12)A .令0y =，则2320t t -+=，解得2t =或1t =（舍），则2244x =--=-，即(4,0)B -.∴AB ==（2）由（1）可知12030(4)AB k -==--，则直线AB 的方程为3(4)y x =+，即3120x y -+=.由cos ,sin x y ρθρθ==可得，直线AB 的极坐标方程为3cos sin 120ρθρθ-+=.[选修4—5：不等式选讲]（10分）23.设a ，b ，c ∈R ，a +b +c =0，abc =1．（1）证明：ab +bc +ca <0；（2）用max{a ，b ，c }表示a ，b ，c 中的最大值，证明：max{a ，b ，c．【答案】（1）证明见解析（2）证明见解析.【解析】（1）2222()2220a b c a b c ab ac bc ++=+++++= ，∴()22212ab bc ca a b c ++=-++.∵1abc =,∴,,a b c 均不为0，∴2220a b c ++>，∴()222210ab bc ca a b c ++=-++<；（2）不妨设max{,,}a b c a =，由0,1a b c abc ++==可知，0,0,0a b c ><<，∵1,a b c a bc =--=，∴()222322224b c b c bc bc bc a a a bc bc bc++++=⋅==≥=.当且仅当b c =时，取等号，∴a ≥max{,,}a b c .。
英语3级试题及答案
英语3级试题及答案一、听力理解（共20分）1. A) What is the man going to do?A. Go to the cinema.B. Go to the library.C. Go to the bookstore.D. Go to the museum.B) What does the woman suggest?A. Taking a taxi.B. Taking the bus.C. Walking.D. Driving.C) What is the relationship between the two speakers?A. Teacher and student.B. Boss and employee.C. Friends.D. Husband and wife.2. Listen to the passage and answer the following questions.A) What is the main topic of the passage?B) Why is the speaker giving the talk?C) What advice does the speaker offer?二、阅读理解（共30分）1. Read the following passage and choose the best answer for each question.Passage 1: [Text about environmental protection]A) What is the main idea of the passage?B) What does the author suggest we should do?C) What is the author's attitude towards the issue?Passage 2: [Text about cultural exchange]A) What is the purpose of the event described in the passage?B) What activities are mentioned in the passage?C) How does the author feel about the event?三、词汇与语法（共20分）1. Fill in the blanks with the appropriate words or phrases.A) The weather was _______ (晴朗的) and warm.B) She _______ (决定) to go to the beach.C) They _______ (计划) to leave early in the morning.2. Choose the best answer to complete each sentence.A) I _______ (已经) finished my homework.A. haveB. hadC. hasD. havingB) She _______ (正在) read a book when I arrived.A. was readingB. were readingC. is readingD. am reading四、完型填空（共15分）Read the following passage and fill in the blanks with the most suitable words.Once upon a time, there was a little girl named Lucy. She _______ (1) a beautiful garden. One day, she _______ (2) to the garden and found a small bird _______ (3) on the ground.1. A. had2. A. went3. A. lying五、翻译（共15分）Translate the following sentences into English.1. 他每天早晨都去公园跑步。
hsk3级模拟试题
以下是HSK 3级的模拟试题：
一、听力部分（共20分）
1. 你最喜欢的季节是什么？为什么？
2. 你觉得学习汉语最难的是什么？
3. 你的家乡有什么特色菜？
4. 请描述一下你最近看的一部电影。
5. 你认为健康的生活方式是什么？
二、阅读部分（共30分）
阅读下面的短文，然后根据短文内容选择最佳答案。
1. 中国的春节是什么时候？（）
A. 农历正月初一
B. 农历腊月二十三
C. 农历腊月二十九
D. 农历腊月二十五
2. 中国的中秋节通常吃什么？（）
A. 月饼
B. 汤圆
C. 粽子
D. 面条
3. 中国的四大发明是什么？（）
A. 火药、指南针、造纸术、印刷术
B. 火药、指南针、造纸术、活字印刷术
C. 火药、指南针、造纸术、印刷术
D. 火药、指南针、造纸术、活字印刷术
4. 中国的长城建于哪个朝代？（）
A. 秦朝
B. 汉朝
C. 唐朝
D. 明朝
5. 中国的国花是什么？（）
A. 牡丹
B. 菊花
C. 梅花
D. 荷花
三、写作部分（共50分）
1. 你的名字是什么？你来自哪里？你的职业是什么？你喜欢做什么运动？你最喜欢的食物是什么？
2. 你最喜欢的季节是什么？为什么？你在这个季节里喜欢做什么？
3. 你最近看了一部什么电影？这部电影的故事情节是什么？你觉得这部电影怎么样？。
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.。
安全试题3
1。
施工单位应当在( ）的领导下开展安全生产管理工作。
A。
企业主要负责人B.项目负责人C.企业技术负责人D.企业专职安全管理人员正确答案:A2。
行政处罚是一种由行政机关或法律、法规授权的组织实施的对违反（）的公民、法人或者其他组织采取惩罚性制裁措施的一种具体行政行为.A.行政管理程序B.民法规定行为C.社会团体章程D。
刑法有关规定正确答案：A3. 诉讼时效中断的法律后果为（）。
A.诉讼时效期间继续计算B。
诉讼时效期间重新计算C。
诉讼时效期间废止D。
诉讼时效期间丧失效力正确答案:B4。
针对某个专项问题或在施工中存在的某个突出性安全问题进行的单项或定向检查是（）.A.专项检查B.定期检查C.季节性检查D.不定期检查正确答案：A5。
行政机关和当事人对违法事实认定有重大分歧,当事人要求听证或者行政机关认为有必要进行听证的,行政机关应当组织听证，进入（）。
A.协议程序B。
一般程序C。
听证程序D.特殊程序正确答案：C6。
附着式升降脚手架支座与建筑物主体结构连接处所需要的建筑结构混凝土强度应由计算确定，且不得小于( )A。
C10B。
C25C.C30D。
C357. 法律责任的免除，也称免责，是指法律责任由于出现法定条件被部分或全部地免除.其中，时效免责即法律责任经过了（）而免除。
A.2年以上期限B.法定期限C.一定的期限D.10年以上期限正确答案:B8. 遇到大雨、大雾、雷击和（)级以上大风等恶劣天气,应当停止进行露天、高处、起重吊装和打桩等作业。
A。
4.0B.5。
0C.6。
0D.7。
0正确答案:C9。
当附着式升降脚手架停用超过（）个月或遇6级以上大风复工时,应进行检查，确认合格后方可使用。
A。
1。
0B。
2.0C.3。
0D.6。
0正确答案：A10. Ⅱ类手持式电动工具适用场所是（）。
A。
潮湿场所B。
金属容器内C。
地沟中D.管道内正确答案:A11. 从法学的角度来说，法的本质是统治阶级（)的工具。
A.实现阶级统治B.国家扩张C。
三基试题3
单5选1 (题下选项可能多个正确，只能选择其中最佳的一项)1.[1分]28岁男性病人，急起发热，胸痛和气促6天，叩诊心界明显扩大，吸气时脉搏变弱。
1小时前呼吸困难急剧加重，心率124次／min，齐，心音低远，血压为8.0／6.0kPa(60／45mmHg)，颈静脉怒张。
最有效的抢救措施为A: 静脉注射毛花苷CB: 肌内注射哌替啶C: 静脉滴注多巴胺与间羟胺D: 持续吸高浓度氧E: 心包穿刺减压显示答案收藏评论标准答案：E答案解析：2.[1分]病人近3个月以来夜间频发胸骨后疼痛，24小时动态心电图示胸痛发作时胸导联ST 段上移，选用何种药物治疗最为恰当A: 毛花苷CB: 普萘洛尔C: 双嘧达莫D: 维拉帕米E: 布桂嗪显示答案收藏评论标准答案：D答案解析：3.[1分]高血压心脏病病人，突发呼吸困难，咳吐粉红色泡沫痰，血压为24.0／16.0kPa(180／120mmHg)，以下哪种药物可作为首选治疗用药A: 利血平B: 硫甲丙脯酸C: 哌唑嗪D: 硝普钠E: 尼群地平显示答案收藏评论标准答案：D答案解析：4.[1分]22岁男性病人，于主动脉瓣第二听诊区闻及舒张期吹风性杂音，以下哪项体征对其诊断最有帮助A: 心尖区舒张期震颤B: P2亢进并分裂C: 交替脉D: 心界向左侧扩大E: 血压为20.4／5.3kPa(154／40mmHg)显示答案收藏评论标准答案：E答案解析：5.[1分]18岁女性病人，患风心病二尖瓣狭窄4年，近半个月游走性关节痛，气促，以下哪项最可能提示病人发生了风湿性全心肌炎A: 心脏向双侧扩大B: 心尖区收缩期Ⅲ级杂音C: 心包摩擦音D: 急性肺水肿发作E: 心电图P-R间期延长显示答案收藏评论标准答案：C答案解析：6.[1分]64岁男性病人，上班时突起持续剧烈左胸痛2小时，心电图示V1～5T波明显变为高尖，心室率110次／min，室性期前收缩7次／min，为安全起见将病人转送至某医院急救，以下哪项措施最为重要A: 静脉滴注硝酸甘油B: 肌内注射哌替啶C: 静脉注射利多卡因继以持续滴注D: 吸氧E: 滴注极化液显示答案收藏评论标准答案：C答案解析：7.[1分]诊断为肥厚型梗阻性心肌病的病人，一般不宜应用A:地尔硫B:普萘洛尔C:维拉帕米D:地高辛E:地西泮显示答案收藏评论标准答案：D答案解析：8.[1分]某窦性心动过缓者近年晕厥3次，可选用下列哪项最安全而又简便的方法协助诊断A: 动态心电图B: 心电图阿托品试验C: 窦房传导时间测定D: 希氏束电图E: 窦房结恢复时间测定显示答案收藏评论标准答案：B答案解析：9.[1分]某病人发生尖端扭转型室速，宜选用以下哪种药物治疗A: 奎尼丁B: 普罗帕酮C: 胺碘酮D: 利多卡因E: 丙吡胺显示答案收藏评论标准答案：D答案解析：10.[1分]以下哪项检查为发现心肌缺血、诊断心绞痛最常用简便的方法A: 心电图B: 心尖搏动图C: 心脏B超D: 冠状动脉造影E: 201Ti心肌显像显示答案收藏评论标准答案：A答案解析：11.[1分]以下哪种情况不宜应用β受体阻滞药A: 二尖瓣脱垂B: 肥厚型心肌病C: 急性心肌梗死D: 变异型心绞痛E: 室性期前收缩显示答案收藏评论标准答案：D答案解析：12.[1分]慢性肺心病肺动脉高压形成的最主要原因是A: 肺气肿压迫及肺光壁破坏使肺毛细血管床减少B: 肺小动脉炎C: 血液粘稠度增加D: 缺氧引起肺小动脉痉挛E: 血容量增加显示答案收藏评论标准答案：D答案解析：13.[1分]诊断中度慢性阻塞性肺病(COPD)，FEV1占预计值％是A: FEV1≥80％B: FEV1<80％，≥50％C: FEV1<50％，≥30％D: FEV1<30％E: FEV1<20％显示答案收藏评论标准答案：B答案解析：14.[1分]肺炎链球菌肺炎，炎症消散后常见的结果是A: 肺部遗留纤维化B: 肺泡受损产生局部肺气肿或肺大泡C: 肺组织完全恢复正常D: 造成胸膜粘连增厚E: 支气管扩张显示答案收藏评论标准答案：C答案解析：15.[1分]严重的Ⅱ型呼吸衰竭病人，不能吸入高浓度氧，主要是因为A: 缺氧不是主要因素B: 可引起氧中毒C: 兴奋呼吸中枢，促使CO2排出过快，诱发呼吸性碱中毒D: 诱发代谢性碱中毒E: 避免引起氧中毒显示答案收藏评论标准答案：E答案解析：16.[1分]肺心病病人，测血气：pH7.25，PaO2 5.3kPa(40mmHg)，PaCO2 9kPa(67.5mmHg)，HCO3-19mmol／L，BE-6mmol／L，应诊断为A: 失代偿性呼吸性酸中毒B: 呼吸性酸中毒合并代谢性酸中毒C: 代谢性酸中毒D: 呼吸性酸中毒合并代谢性碱中毒E: 代偿性呼吸性酸中毒显示答案收藏评论标准答案：B答案解析：17.[1分]重度至危重度哮喘病人，痰液粘稠咳不出来，最有效的祛痰方法是A: 抽吸痰液B: 使用抗生素C: 用综合剂或氯化铵D: 输液纠正失水E: 纠正酸中毒显示答案收藏评论标准答案：D答案解析：18.[1分]慢性支气管炎诊断标准中，对病程的规定是A: 每年患病3个月，连续2年以上B: 每年患病2个月，连续2年以上C: 每年患病1个月，连续3年以上D: 一年内患病持续3个月以上E: 连续3年每患病1个月以上显示答案收藏评论标准答案：A答案解析：19.[1分]纠正呼吸性酸中毒，最主要的措施是A: 输碱性溶液，使pH值恢复正常B: 纠正电解质紊乱C: 改善通气D: 使用脱水剂减轻脑水肿E: 给呼吸兴奋药显示答案收藏评论标准答案：C答案解析：20.[1分]吸入性肺脓肿最常见的感染菌是A: 金黄色葡萄球菌B: 克雷伯杆菌C: 化脓性链球菌D: 真菌E: 厌氧菌显示答案收藏评论标准答案：E21.[1分]20岁男性病人，近来感乏力、食欲不振、夜有盗汗，以往无慢性咳嗽史及肺结核史，X线胸片检查发现右上肺一肋间有片状模糊阴影，内有小透亮区，痰涂片发现抗酸杆菌，应诊断为A: 右上肺原发型肺结核，涂(+)，初治B: 右上肺继发型肺结核，涂(+)，初治C: 右上肺原发型肺结核，涂(+)，复治D: 右上肺继发型肺结核，涂(+)，复治E: 血行播散型肺结核，涂(+)，初治隐藏答案收藏评论标准答案：B答案解析：22.[1分]下列哪项最能表现溃疡病的特征A: 恶心呕吐B: 腹胀嗳气C: 出汗心悸D: 上腹节律性痛E: 明显反酸隐藏答案收藏评论标准答案：D答案解析：23.[1分]诊断消化性溃疡最可靠的依据是A: 节律性上腹痛B: 胃酸增高C: 钡餐试验十二指肠球部激惹变形D: 大便匿血试验阳性E: 胃镜检查隐藏答案收藏评论标准答案：E答案解析：24.[1分]消化性溃疡病最常见的并发症是A: 幽门梗阻B: 溃疡穿孔C: 癌变D: 出血E: 反流性食管炎隐藏答案收藏评论标准答案：D答案解析：25.[1分]原发性肝癌的早期诊断最有意义的是A: 碱性磷酸酶增高B: γ-谷氨酰转肽酶增高C: 甲胎蛋白增高D: 乳酸脱氢酶增高E: 单胺氧化酶增高隐藏答案收藏评论标准答案：C答案解析：26.[1分]肝性脑病病人血氨增高，导致中枢神经系统功能紊乱最主要的机制是A: 干扰大脑的蛋白质代谢B: 干扰大脑的脂肪代谢C: 干扰大脑的水盐代谢D: 干扰大脑的能量代谢E: 干扰大脑的微量元素的正常含量隐藏答案收藏评论标准答案：D答案解析：27.[1分]肝性脑病病人给予肠道消毒剂最主要的目的是A: 清除致病菌的毒素B: 减少真菌的繁殖C: 抑制肠道细菌，减少氨的形成D: 预防原发性腹膜炎E: 防止继发性肠道感染隐藏答案收藏评论标准答案：C答案解析：28.[1分]下述哪项最能反映门脉高压的特征A: 脾脏肿大B: 腹水形成C: 食管静脉曲张D: 腹壁静脉曲张E: 痔核形成隐藏答案收藏评论标准答案：C答案解析：29.[1分]抑制胃酸药作用最强的药物是A: H2受体拮抗剂B: 抗胆碱能药物C: 丙谷胺D: 质子泵阻滞剂E: 前列腺素E隐藏答案收藏评论标准答案：D答案解析：30.[1分]男性，28岁，间歇性右下腹痛半年伴腹泻，粪呈糊状，无脓血便。
试题3——精选推荐
试题3MODEL TEST 3CLASS: NAME:PART I GRAMMAR & VOCABULARYThere are thirty sentences in this section. Beneath each sentence there are four words or phrases marked A, B, C and D. Choose one word or phrase that best completes the sentence.Mark your answers on your answer sheet.1. I felt uneasy for the whole day as I was __________ from deep sleep by the ringing of the telephoneearly in the morning.A) aroused B) rose C) raised D) arose2. __________ the lake around our university was seriously polluted.A) In time B) At no time C) In times to come D) At one time3. This college is __________ Prof Wang.A) at the service of B) at service of C) in charge of D) in the charge of4. In his lecture Prof Smith has __________ a wide range of subjects.A) covered B) expressed C) released D) revealed5. If we know the weather __________, we can make our plans to fit in with the weather.A) in contrast B) in common C) in advance D) in return6. It depends on the purpose __________ the computer is used.A) for which B) of that C) for that D) of which7. Only until his father was out of prison __________ go to school.A) can Charles B) Charles can C) could Charles D) Charles could8. I really appreciate __________ to help me, but I am sure that I will be able to manage it by myself.A) you to offer C) that you offerB) your offering D) that you are offering9. Children are likely to get __________ if no one cares about their up bringin g.A) away from the hand C) out of handB) out of the hand D) away from hand10. The reason for the traffic accident was __________ one of the drivers lost control of his car.A) that B) when C) why D) because11. __________ today, he would get there by Sunday.A) Would he leave B) Was he leaving C) Were he to leave D) If he leaves12. Fred has a strong desire __________ a doctor.A) becomes B) became C) to become D) be becoming13. __________, the workers in the transistor plant have made great contributions to the nation.A) As they are young C) As young are theyB) Young as they are D) Young although they are14. I haven’t been able to answer his letter. Perhaps I __________ ne xt week.A) would B) may C) am able to D) will be able to15. Never __________ such hard years in all her life as she had in her four years’ laboratory work looking for radium.A) had Madame Curie had C) did Madame Curie haveB) Madame Curie had D)Madame Curie has16. The car was repaired but not quite to my _____.A) joy B) pleasure C) attraction D) satisfaction17. Are you _____ spending more money on the space program?A) in favor of B) by favor of C) in favor to D) out of favor18. _____ was unimportant.A) Whether he enjoyed our dinner or not B) No matter how he enjoyed our dinnerC) If he enjoyed our dinner D) What he enjoyed our dinner19. Selfish people often take _____ of other people’s kindness.A) advantage B) care C) use D) profit20. His business is growing so fast that he must _____ more workers.A) take up B) take on C) take over D) take out21. Most of the students in the class are in __________ of his suggestion that they go sailing next month.A) order B) touch C) course D) favor22. Don’t __________ to let me know if there is anything I can do for you.A) reject B) prevent C) hesitate D) refuse23. News about the Gulf War came pouring from a number of unnamed __________.A) origins B) sources C) ways D) places24. The light in this lab is too __________ to be used for close work.A) small B) black C) dark D) dim25. The freshmen already have __________ to the best library books.A) references B) courses C) authority D) access26. We know Tom’s uncle __________ as a manager of a supermarket for ten years.A) behaved B) served C) performed D) placed27. _____ the last one, I answered all the questions.A) Except B) Except for C) Besides D) In addition to28. I didn’t go to the party, but I do wish I _____ there.A) were B) would be C) had been D) will be29. After saying that, he _____ the door quickly.A) made up B) made for C) made out D) made30. The young man promised to his parents ,"I would never _____ again. "A) let you down B) let you out C) let you in D) let you by PART II CLOZEDecide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on your answer sheet.Journalists and TV people, we know, are 31 to record what goes on: but in trying to get the best 32 they can, they may sometimes seem amazingly cold-blooded. In the massacre that followed the British quitting India, 33 was a photographer who made a sorrowing Indian family bury and rebury 34 dead several times 35 he got a perfect shot. A BBC sound man held up a Nigerian execution for half an hour while he adjusted his sound equipment; you could say it didn’t 36 any difference to the final outcome, but it doesn’t make you feel especially warm towards the man 37 .Should journalists and photographers join in, 38 just stand back and watch while people kill 39 another? It’s a tricky question, not just a 40 of how brave anyone is feeling at the time, 41 without authentic pictures, how will the world know, how should the world believe 42 crimes are committed? One dead photographer does not do much for the cause he cares about, even 43 he did feel forced to join in and take sides.To stay out of the fight, to write 44 what’s going on, to treat 45 with both sides, as a doctor will cure soldiers in 46 uniform or a lawyer argue for either side —that is supposed to be our code, and when it 47 to the crutch, we probably do better trying to stick 48 that, than rushing off on individual impulse. But is there not a point in any profession 49 you are forced back against the wall 50 a human being?I think there is, and I was.31. A) ready B) supposed C) responsible D) eager32. A) record B) report C) essay D) article33. A) here B) where C) there D) he34. A) its B) the C) their D) that35. A) when B) after C) before D) till36. A) do B) become C) change D) make37. A) concerning B) concerns C) concerned D) concern38. A) but B) or C) and D) only39. A) each B) every C) one D) all40. A) fact B) case C) thing D) matter41. A) but B) although C) for D) because42. A) which B) what C) that D) such43. A) if B) when C) then D) as44. A) up B) away C) down D) in45. A) equally B) evenly C) averagely D) similarly46. A) neither B) both C) either D) all47. A) speaks B) comes C) talks D) goes48. A) to B) for C) on D) in49. A) which B) where C) that D) what50. A) as B) like C) unlike D) forPART III READING COMPREHENSIONIn this section there are several passages followed by twenty questions or unfinished statements, each with four suggested answers marked A, B, C, and D. Choose the one that you think is the best answer.Mark your answers on your answer sheet.TEXT ABallet training in Russia begins at age nine or ten. Whatever the limitations of ballet in the Soviet Union, it is no wonder that Russian ballet dancers perform with ease leaps and lifts seldom attempted elsewhere, and that the standard of dancing in a Russian corps de ballet is far above that usually seen in other countrie s °? nine years of ballet discipline is almost unheard of outside Russia.The period devoted to dance class increases gradually from two or three hours a day to five or six. As in other institutions of higher learning, ballet students receive monthly government stipends in their last four years, varying from 160 to 200 rubles ($ 16 to $ 20). Of the thirty pupils to begin ballet each year, fewer than twenty-five usually graduate; the others drop out because of poor health or lack of ability.Upon graduation, the starting salary for members of a corps de ballet is 100 rubles a month, while prima ballerinas receive 6 000. Russia’s most famous ballet company, the Bolshoi, has first pick of each graduating class, but few dancers have the good fortune to begin with this company; all graduates, however, are assured of jobs in ballet.Stars such as Ulanova were produced in this fashion, with training started early and security, if not intellectual independence, guaranteed.51. Ballet training in Russia begins when a child __________.A) begins schoolB) is in the primary gradesC) finishes his academic workD) can walk52. Long training has enabled Russian ballet dancers to __________.A) give unusually long performancesB) develop new ballet figuresC) perform leaps and lifts seldom seen elsewhereD) overcome the limitations of ballet in the Soviet Union53. According to the selection, Russian corps de ballet have __________.A) unusually high standards of dancingB) greater discipline than the companies in any other countryC) more applicants than corps de ballet elsewhereD) more professional dancers than most ballet companies54. The students who graduate are assured of __________.A) economic securityB) intellectual independenceC) 6 000 rubles a monthD) both A and B55. Implied but not stated: __________A) Students in institutions of higher learning in the Soviet Union receive stipends from thegovernment.B) Only the best students in the ballet classes receive government stipends.C) The author does not think that Soviet ballet is excellent in every respect.D) Financial security is more important to Soviet ballet dancers than is ballet’ itself.TEXT BAmy Johnson was a very ambitious and energetic person. She didn’t have much in common wi th other girls in her school, however. She played football better than most boys, and unfortunately she made a rather bad impression on many of her teachers. Amy just didn’t act the way they thought a girl should. She studied at a university and later took a job as a typist. Although she was enthusiastic and did her best, she made many mistakes and was poorly paid. She didn’t want to be a typist anyway —she dreamed of becoming a pilot!Amy moved to London, borrowed some money, and learned to fly. Nobody, h owever, wanted to hire a female pilot. She decided to fly alone to Australia to prove that she could fly as well as any man. Her parents lent her money to buy an airplane.Amy set off on May 5, 1930. Her route took her over Vienna, Constantinople, and Baghdad. She was caught in a sandstorm and had to make an emergency landing in the desert. But she landed in India six days later. She had broken the record to India by two days. Over Burma she ran into a monsoon (季风), and was able to save herself only by landing on a football field. She finally reached Australia. The plane propeller （螺旋桨）had been broken during her last landing, and she had to crash-land. But A my had proved that she could fly — and that a woman could do almost anything she really put her mind to. Amy Johnson later married the pilot who had come to her rescue in Australia.56. Amy’s teachers didn’t like her because __________.A) she was ambitiousB) she played football wellC) she impressed them deeplyD) she didn’t act as a girl57. Amy was poorly paid as she __________.A) didn’t type wellB) was too enthusiasticC) didn’t try her bestD) wanted to be a pilot58 A my had broken the record to India when she arrived there __________.A) in two daysB) in less than two daysC) in less than six daysD) in more than six days59. Amy had to crash-land because __________.A) there was something wrong with her planeB) there was no airport for her to landC) she ran out of gasolineD) she felt dizzy60. That Amy married the pilot because__________.A) she loved himB) she was saved by himC) they fell in love at first sightD) they were both pilotsTEXT CFor most people, life is easier and more comfortable than ever before. Convenience fo ods from the supermarket simplify shopping and cooking. Household appliances like the vacuum cleaner and the washing machine have taken the drudgery out of housework. Released from these household chores, many wives have found jobs outside the home. Women are achieving economic independence.Families, too, are simpler today. In America, it is not customary for parents to live with their married children. With our greater mobility, relatives have scattered, the parents retiring to Florida or Arizona and the young people, after they marry, going wherever their jobs or their parents or their interests take them.Young adult women have new freedom, too. While attending college, they often live away from home, sometimes far from their parents or their relatives. After college, they move to the city, find a job, and set up a “bachelor”apartment. This is the era of women’s liberation.But all this freedom and affluence have had an unforeseen and in some respects a devastating（破坏）effect on marriage.61. In the US, families are becoming __________.A) biggerB) smallerC) easierD) freer62. Why are women able to achieve economic independence?A) Because they have their own salary.B) Because convenience foods are available.C) Because they are free away from drudgery.D) Because they are attending college.63. Hard housework was taken away by __________.A) liberated womenB) retired parentsC) supermarketsD) modern equipment64. Which of the following statements is NOT true according to the text?A) Women’s liberation had made it possible for them to study.B) Comfortable life adversely influences marriage in A merica.C) Adults can go wherever they want.D) Women prefer to be bachelors.65. The text implies that the author __________.A) highly praise the liberation of womenB) heartily enjoys this freedom and affluenceC) strongly recommends such kind of social lifeD) greatly worries about the bond of marriageTEXT DAnimals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even though there is no difference in taste or s mell between the two water bottles. When a fragrant flavor was added to the vitamin-enriched fluid, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were switched to the clear water. In time, however, they broke the habit and went back to where the necessary vitamins were.In a classic experiment, babies of 6 to 12 months old were placed in a cafeteria feeding arrangement, with a wide selection of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating patterns, but that over a period of time they managed to select well-balanced diet.So, in selecting food, rats and babies do seem to know and act on what's best for them. Apparently, there is a kind of "body wisdom,＂which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced by long-established habits. Some people eat fox, dog and blackbirds ,while we eat cows and pigs. So what people eat and how much they eat seems to be greatly influenced by what is going on around them.66. In the experiment on rats, a fragrant flavor was added to the rat's drinking water to_________.A) encourage rats to drink vitamin-enriched waterB) find out rats preference in flavorC) test whether rats know which drink is good for themD) demonstrate that vitamins are tasteless67. The expression "the habit" (para.1, sentence 4) refers to drinking water which_________.A) has no smell B) is tasteless C) has vitamins D) is flavored68. According to the passage ,adults eating habits differ from those of babies because_________.A) adults know better than babies what kind of food are good for their healthB) adults usually cannot resist the temptation of various delicious foodsC) adults' eating habits are closely related to the social and cultural customsD) adults have more choices of food than babies in eating patterns69. The author implied in the passage that most of us_________.A) eat a balanced dietB) choose the food that is of nutritionC) have the habits influenced by the surroundingsD) like to eat the food with a fragrant flavor70. As far as their eating habits are concerned, babies and rats are similar in that_________.A) both have the wisdom to choose a balanced dietB) both prefer flavored food and drinkC) both have the same eating patternsD) both develop a taste for the same kinds of flavorTHE ENDKEY TO THE MEDEL TESTPART V GRAMMAR & VOCABULARY1. A2. D3. D4. A5. C6. A7. C8. B9. C 10. A11. C 12. C 13. B 14. D 15. A 16. A 17. B 18. A 19. A 20. B21. D 22. C 23. B 24. D 25. D 26. B 27. B 28. C 29. B 30. A Part IV CLOZE31. B 32. A 33. C 34. B 35. D 36. D 37. C 38. B 39. C 40. D41. D 42. D 43. A 44. C 45. A 46. C 47. B 48. A 49. B 50. A PART VI READING COMPREHENSION 51. B 52. C 53. A 54. A 55. C 56. D 57. A 58. D 59. A 60. B61. B 62. A 63. D 64. D 65. D 66. C 67. D 68. C 69. C 70. A。
中式烹饪赛项试题3
中式烹饪赛项试题3一、单选题（请把正确选项填在（）内，每题1分共70分）1.在社会主义社会中，（）是每一个行业都要共同遵循的宗旨。
［单选题］A.个人利益为先B.家庭利益为重C.为国家服务D.为人民服务（正确答案）2.下列选项中，（）不属于商业从业售货员的职业道德规范。
［单选题］A.公正廉洁（正确答案）B.为人民服务C.货真价实D.公平交易3.下面属于教师的职业道德规范的是（）。
［单选题］A.个人利益B.公正廉洁C.救死扶伤D.为人师表（正确答案）4.职业道德具有广泛性、实践性、（）和具体性。
［单选题］A.代表性B.多样性（正确答案）C.规范性D.形象性5.下列不属于职业道德的特点的是（D）。
［单选题］A.广泛性B.实践性C.多样性D.约束性（正确答案）6.为了使酱制后的菜肴颜色更为鲜艳，（）处理时可用少量酱油涂抹原料表皮。
［单选题］抹原料表皮。
A.油炸B油焙 C.滑油 D.油浸（正确答案）7.热炮工艺是指将原料在（）中烫熟后迅速捞出，蘸味料或拌调料后食用。
［单选题］A.热水8.沸水（正确答案）C.温水D.热汤8.为了便于成熟和（），热怆菜的原料一般加工成片、丝、条等形状。
［单选题］A.盛装（正确答案）B.人味C.造型D.美观9.（）的白煮法，主要是取料而不用汤。
［单选题］A鸡类B.鱼类C.热菜D.冷菜（正确答案）10.白煮法是以煮制（）为主的方法。
［单选题］A.大件料（正确答案）B.小件料C.蔬菜类D.加工制品类11.白煮菜的基本特点是白嫩鲜香、（）、清淡爽口。
［单选题］A.咸甜兼备B.本味俱在（正确答案）C.家常味型D.不用麻辣12.卤水调配操作程序的第一个步骤是（）。
［单选题］A.香料、调味料的选择（正确答案）B.煮制香料C.煽炒葱姜D.调色13.五香酱牛肉的肉料，夏季腌制（）左右，冬季腌制3天左右。
［单选题］A.5天B.4天C.3天D.1天（正确答案）14.酱的正确操作程序是（）。
［单选题］A.选料一加工处理一人锅酱制T冷却切配T装盘B.选料T煮制香料T入锅酱制一冷却切配一装盘（正确答案）C.选料T入锅酱制一冷却切配一装盘一配调味汁D.选料T入锅酱制一配调味汁T冷却切配T装盘15.白切肉在煮制肉料时，煮至（）即可。
试题3(1)
1. 使用固定式直梯进行攀登作业时，当攀登高度超过（）时,宜加设护笼。
A.2mB.1mC.3mD.6m正确答案：C2. 扣件式钢管模板支架的立杆上段与下段立杆应（）。
A.采用直角扣件进行搭接B.采用对接扣件进行对接C.错开固定在水平杆上D.采用旋转扣件固定在剪刀撑上正确答案：B3. 基坑开挖深度超过（）时，周边必须安装防护栏杆。
A.1mB.2mC.3mD.4m正确答案：B4. 下列关于场地平整的说法不正确的是（）。
A.当施工区域积水坑深度超过500mm时，应设安全防护措施B.当旧基础埋置深度大于2.0m时，宜采用人工开挖和清除C.路面高于施工场地时，应设置明显可见的路险警示标志D.施工机械不得在淤泥、软土上停放、检修正确答案：B5. 当扣件式钢管脚手架的立杆基础不在同一高度时，必须将高处的纵向扫地杆向低处延长（）与立杆固定，高低差不应大于（）。
A.两跨，1mB.一跨，1mC.两跨，2mD.一跨，2m正确答案：A6. 关于土方开挖的顺序、应遵循的原则错误的是（）。
A.开槽支撑，先撑后挖B.分层开挖C.严禁超挖D.先挖后撑，分层开挖正确答案：D7. 施工单位应全面了解拆除工程的图纸和资料，进行实地勘察，并应编制施工组织设计和（）措施。
A.安全技术B.质量规章C.质量管理D.质量保证正确答案：A8. 深浅两基坑相连时，应（）。
如必须分段夯实时，交接处应呈阶梯形，且不得漏夯。
上下层错缝距离不小于1.0m。
A.同时回填B.先回填先基坑后回填深基坑C.先回填深基坑后回填浅基坑D.先回填深基坑，填至浅基杭标高时，再与浅基坑一起夯正确答案：D9. 对于碗扣式钢管模板支架，当立杆间距大于（）时，应在拐角处设置通高专用斜杆，中间每排每列应设置通高八字形斜杆或剪刀撑。
A.0.5mB.1.8mC.1.5mD.1m正确答案：C10. 以下对雨季施工的陈述，错误的是（）。
A.提前编制雨季施工方案，制定雨季施工应急预案B.制定塔机、脚手架等地基基础的防冻融措施C.及时疏浚排水系统，确保现场排水畅通D.提前做好应急物资的储备正确答案：B11. 拆除施工应分段进行，不得（）作业。
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第3次生物自主命题
1.下列有关细胞生命历程说法正确的是（ C ）
A 原癌基因的主要功能是阻止细胞发生异常增殖。
B 被病原体感染的细胞的清除属于细胞坏死
C 细胞分化使细胞趋向专门化,提高了机体各种生理功能的效率。
D 细胞凋亡受基因调控,不利于个体生长发育。
2．下列有关说法错误的是（ D ）
A 液泡中的色素是花青素,与花和果实的颜色有关;叶绿体中的色素是叶绿素等,与光合作用有关。
B 通过胞吞(吐)运输的大分子物质穿过细胞膜的层数为0,因为该过程是通过膜的融合将物质转入(转出)细胞的。
C 与主动运输有关的细胞器除供能的线粒体外,还有载体蛋白的合成、加工场所——核糖体、内质网、高尔基体。
浓度无关的运输方式除自由扩散外,还有协助扩散，但不包括D 运输速率与O
2
通过无氧呼吸提供能量的主动运输。
3.大量临床研究表明，β淀粉样蛋白代谢相关基因突变引起β淀粉样蛋过度产生，导致家族性阿尔兹海默症的发生；β淀粉样蛋白基因位于21号染色体上，21三体综合征患者常常会出现阿尔兹海默症症状。
下列有关分析错误的是( D )
A.21三体综合征患者可能因多出一个β淀粉样蛋白基因而易患阿尔兹海默症
B.阿尔兹海默症产生的根本原因是发生了基因突变
C.21三体综合征产生的原因是减数分裂时21号染色体未能正常分离
D.调查阿尔兹海默症的发病率需要对多个患者家系进行调查
4.球员在赛场上奔跑、抢断、相互配合，完成射门等机体生理功能中的表述，不正确的是 ( C)
A 球员是在神经与肌肉的协调下起脚射门。
B 在大量出汗、体内失水过多的情况下，人体血液中的抗利尿激素的含量会增加
C.长时间奔跑需要消耗大量脂肪用于供能
D.在大脑皮层调控下球员相互配合
5. 关于植物激素的调节以下说法正确的是（D)
A.顶端优势现象、根的向地生长、茎的背地生长都说明了生长素作用的两重性
B.植物生长素的极性运输和横向运输都是由外界的单向刺激(如单侧光照、重力)引起的
C.两种不同浓度的生长素溶液都不具有促进植物细胞生长的作用，其原因一定是其中的一种溶液浓度过高，另一种溶液浓度过低
D.生长素、细胞分裂素和赤霉素对植物的生长发育有促进作用，属于植物生长的促进剂；脱落酸与乙烯对植物的生长发育有抑制作用，属于生长抑制剂
6.某研究人员模拟赫尔希和蔡斯关于噬菌体侵染细菌实验，进行了如下实验：
①用32P标记的噬菌体侵染未标记的细菌
②用未标记的噬菌体侵染35S标记的细菌
③用15N标记的噬菌体侵染未标记的细菌
一段时间后进行离心，检测到放射性存在的主要部位依次是( B )
A．沉淀、上清液、沉淀和上清液
B．沉淀、沉淀、沉淀和上清液
C．沉淀、上清液、沉淀
D．上清液、上清液、沉淀和上清液
29．（9分）有人以水绵为实验材料，研究Mn2+对水绵光合作用的影响，通过实验获得以下数据：
注：红光和蓝紫光吸收率是将水绵叶绿体色素提取后测得的数据。
（1）Mn是组成植物细胞的元素，根据其在细胞中的含量可知，其应属于____元素。
在叶绿体色素的提取和分离实验中，常用____（试剂）进行色素的提取。
（2）本实验的自变量有____个，影响红光和蓝紫光吸收率的因素是_______。
在较弱光条件下，水绵对____光的吸收率较高。
/h；（3）当光照强度为5 klx、Mn2+浓度为0 mg/L时，水绵的呼吸速率为____mmolO
2
/h。
当光照强度为10 klx，Mn2+浓度为10 mg/L时，水绵的光合速率为____mmolO
2
30.（10分）图1表示缩手反射的反射弧，图2、图3分别表示图1虚线框内局部结构放大示意图。
回答下列问题：
（1）图1中表示效应器的是（填字母），其由组成。
图2中组成突触的结构包括（填字母）。
（2）图3中，表示兴奋部位的是（填字母），该兴奋状态的形成是Na+内流的结果，其进入膜内的方式是（填“协助扩散”或“主动运输”）。
（3）某同学取指血进行化验，当针刺破手指皮肤时，虽感受到疼痛但并未缩手。
这说明缩手反射的神经中枢虽在脊髓，但还会受控制。
（4）如图4表示测量神经纤维膜内外电位差的装置，图5表不测得的电位差变化。
①图4所示状态下测得的电位差相当于图5中的（填字母）区段的电位差。
当图4中神经纤维某一部位受到刺激时，Na+内流产生动作电位，对应图5中的（填字母）区段的变化。
②若图4中的神经纤维所在神经元接受突触前膜释放的兴奋性神经递质，则图4的指针偏转情况是。
31．（9分）下图虚框内为某人工池塘生态系统的主要食物关系，括号内前一数值表示一年内该种生物的总能量，后一数值表示一年内该种生物同化的总能量，单位为J/(cm2·a)，据图回答问题：
（1）图中方框内显示该池塘生态系统有_____条食物链；能量从第一营养级传递到第二营养级的效率是_________%（保留小数点后一位数字）。
（2）羽化的双翅目雄性昆虫在特定时期能分泌一种吸引异性前来交尾的信息素，这说明信息传递的作用之一是______________。
该系统中的消费者在池塘中体现出明显的分层现象，出现这一现象的主要原因是_________________________。
（3）“金山银山不如绿水青山”。
近些年来，我国大力推进生态文明建设，使得很多荒漠化程度加剧的区域在治理中实现了“荒漠逐渐变草原林海”，这说明人类活动会使群落演替按照不同于________________进行。
经过治理后，生态系统稳定性普遍提高。
当森林遭遇持续的干旱气候时，树木往往扩展根系的分布空间，以保证获得足够的水分，维持生态系统正常的功能，这主要反映了生态系统的______（填“抵抗力”或“恢复力”）稳定性。
32.（11分）猫的眼色中，蓝色和黄色是由一对等位基因控制的相对性状。
现选择多只表现型相同的雌猫和多姿表现型相同的雄猫作亲本进行杂交实验，杂交结果如下（不考虑突变）：
某生物兴趣小组的同学分析其原因，提出以下两种假设：
假设一:控制猫的眼色的基因位于X染色体上。
假设二：控制猫的眼色的基因位于常染色体上，杂合子在不同性别中表现型不同。
回答下列问题：
（1）若假设一成立，亲本雌猫和雄猫的基因型分别为（用
E、e表示相关基因）。
（2）若假设二成立，请在表写出猫中蓝眼与黄眼对应的基因型（用E B表示蓝色基因、E Y表示黄色基因）。
（3）请利用上述F1中的蓝眼雄猫与黄眼雌猫杂交，判断上述假设哪一种是成立的，写出杂交的预期结果与结论。
37．（15分）果酒和果醋含有丰富的营养，且便于保存。
分析并回答下列问题：（1）果酒的制作需要以____________作为菌种，从生态系统的成分看，该微生物属于____________。
（2）能证明果汁中产生了酒精的试剂是___________，此颜色反应需在___________条件下进行，其颜色变化为______________________。
（3）在果醋制作过程中，醋酸菌将果酒制作的产物乙醇先变为_________________，再将其变为醋酸，上述过程需在氧气充足，但________________的条件下完成。
（4）果酒制作过程涉及的微生物细胞呼吸产生CO
的场所包括_____________。
2
38．（15分）请回答下列关于生物工程的有关问题：
（1）基因工程的核心是____________；将目的基因导入植物细胞采用最多的方法是_________，将目的基因导入动物细胞最有效的方法是_____________。
（2）植物体细胞杂交技术中，诱导原生质体融合的化学方法一般是用_______作为诱导剂来诱导细胞融合；动物细胞工程中___________技术是其他动物细胞工程技术的基础，动物细胞工程的一项重要应用是单克隆抗体的制备，与普通抗体相比单克隆抗体的最主要优点是__________．
（3）胚胎工程中，为了获得产奶量高的奶牛，要对性别进行鉴定，需要取样囊胚期的___________做DNA分析，若对囊胚进行胚胎分割，要注意_____________，否则影响分割后胚胎的恢复和进一步发育。