摄像、录像制作(A卷)-成人2018-2019学年度第二学期期末考试试题及答案

2018-2019学年度第二学期期末考试命题人：本试卷分为第I卷（选择题）和第II卷（非选择题）两部分, 共150分。

考试时间120分钟。

第I卷第一部分听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

例：How much is the shirt?A. £19.15.B. £9.18.C. £9.15.答案是C。

1. Where does this conversation take place?A. In a classroom.B. In a hospital.C.In a museum.2. What does Jack want to do?A. Take fitness classes.B. Buy a pair of gym shoes.C. Cha nge his work schedule.3. What are the speakers talking about?A. What to drink.B. Where to meet.C. When to leave.4. What is the relationship between the speakers?A. Colleges.B. Classmates.C. Strangers.5. Why is Emily mentioned in the conversation?A. She might want a ticket.B. She is looking for the man. C . She has an extra ticket.第二节（共15小题，每小题1.5分，满分22.5分）听下面5段对话或独白。

2021 -2021 学年下学期期末教学质量检测试题八年级英语考前须知：1 ．本试卷分第Ⅰ卷 (选择题 )和第Ⅱ卷 (非选择题 )两局部 ,共 4 页 .总分值 100 分 ,考试时间 90 分钟 .答卷前 ,考生务必用 0.5 毫米黑色签字笔将自己的姓名、准考证号等信息填写在答题卡规定的位置 .考试结束后 ,只须将答题卡交回 .2 ．答题考前须知见答题卡 ,答在本试卷上不得分 .第Ⅰ卷 (选择题共 55 分 )一、听力测试 (共 15 小题 ,计 15 分 )注意：听力测试分四局部 ,共 20 小题 .做题时 ,先将答案画在试卷上 ,录音内容结束后 ,将所选答案转涂到答题卡上 .(一 )听句子 ,选择与句子内容相对应的图片 .每个句子读两遍 .1. A. B. C.2. A. B. C.3. A. B. C.4 .5. A. B. C.1. 2. 3. 4. 5.(二 )听对话和问题 ,根据所听内容 ,选择最正确答案 .对话和问题都听两遍 .6. A. Twice. B. Once. C. Three times.7. A. It is cloudy. B. It is rainy. C. It is snowy.8. A. It ,s too expensive. B. It ,s not special enough. C. It ,s out of style.9. A. At two o ,clock. B. At two thirty. C. At three o ,clock.10. A. In a hospital. B. At a train station. C. In a shop.(三 )听对话 ,根据对话内容 ,判断以下句子正误 ,正确的用 "A〞表示 ,不正确的用"B〞表示 .对话读两遍 .听对话前 ,你们有 20 秒钟的时间阅读以下句子 .11. Mary is mad at her cousin.12. Mary lent a ruler to her cousin.13. Mary ,s cousin said she couldn ,t find it.14. Mary will go to Linda ,s birthday party at six.15. Mary will go to Linda ,s house by bus.请考生们先找到第四大题的听写局部 ,你们将有 5 秒钟的准备时间 .二、单项填空 (共 15 小题 ,计 15 分 )选择最正确答案 .16. Britain is _________ European country. It is also _________ island country.A. an; aB. the; anC. a; anD. an; an17. - - - Could you please sweep the floor?- - -______. I have to do my homework.A. Yes, sureB. Sorry, I can ,tC. Sorry, you can ,tD. Yes, you can18. 一 How much should I _________ on this radio ?一 Fifty pounds _________ enough.A. spend; areB. pay; isC. cost; isD. spend; is19. Although the old man lives in a house ___, but he does not feel ____.A. alone, aloneB. alone, lonelyC. lonely, aloneD. lonely, lonely20. 一 Has Tom finished reading his book yet?一 I've no idea, but he _________it the whole morning.A. readB. was readingC. has doneD. would read21. - - -______ have you studied English?- -– Since 2002.A. How oftenB. How longC. How many timesD. How old22. 一 Where is Mr. Black? I haven't seen him for a long time.一 He _________Switzerland. He _________there for several months.A. has gone to; has been toB. has gone to; has beenC. has been to; has beenD. has been to; has gone23. - - -Look! It ,s raining heavily. _______ take a umbrella with you?- - -Well, I ,ll take one right now.A. Why don ,tB. Why notC. Would you mindD. Would you like24. We should try to think up a good way________ the problem.A. works outB. to work outC. working outD. work out25. It ,s kind _________them to give away money to UNICEF. It's important _________ them to help poor children go to school.A. to; forB. for; ofC. of; toD. of; for26. - - -How long _______ you ______ the book?- - - For only a week.A. have ; borrowedB. did ; lendC. have ; keptD. did ; have27. Linda, _______ girl, is also the second _______ one in our class.A. funny; tallB. funnier; tallerC. funniest; tallestD. the funniest; tallest28. If our government _____ attention to controlling food safety now, our health _____ in danger.A. won ,t pay; isB. doesn ,t pay; wasC. won ,t pay; will beD. doesn ,t pay; will be29. - - -Which do you prefer, tea or coffee?- - - _________is OK. I don ,t care.A. EitherB. NeitherC. BothD. All30. Many people do not realize the importance of health _________ they have fallen ill.A. sinceB. untilC. whileD. after三、阅读理解( 一 ) 阅读短文 ,完成 31 - 45 小题 . (共 15 小题 ,计 15 分 )ALife in the future will be different from life today. But what will the change be?The population is growing fast. There will be more people in the world and most of them will live longer than people live now.Computers will be much smaller and more useful and there will be at least one in every home. And computer studies will be one of the important subjects in school then.People will work fewer hours than they do now and they will have more free timefor sports, watching TV and travel. Traveling will be much cheaper and easier. And many more people will go to other countries for holidays.本课教学反思英语教案注重培养学生听、说、读、写四方面技能以及这四种技能综合运用的能力 .写作是综合性较强的语言运用形式 , 它与其它技能在语言学习中相辅相成、相互促进 .因此 , 写作教案具有重要地位 .然而 , 当前的写作教案存在 " 重结果轻过程〞的问题 , 教师和学生都把写作的重点放在习作的评价和语法错误的订正上 ,无视了语言的输入 .这个话题很容易引起学生的共鸣 ,比拟贴近生活 ,能激发学生的兴趣 , 在教授知识的同时 ,应注意将本单元情感目标融入其中 ,即保持乐观积极的生活态度 ,同时要珍惜生活的点点滴滴 .在教授语法时 ,应注重通过例句的讲解让语法概念深入人心 ,因直接引语和间接引语的概念相当于一个简单的定语从句 ,一个清晰的脉络能为后续学习打下根底 .此教案设计为一个课时 ,主要将安妮的处境以及她的精神做一个简要概括 ,下一个课时那么对语法知识进行讲解 .在此教案过程中 ,应注重培养学生的自学能力 ,通过辅导学生掌握一套科学的学习方法 ,才能使学生的学习积极性进一步提高 .再者 ,培养学生的学习兴趣 ,增强教案效果 ,才能防止在以后的学习中产生两极分化 .在教案中任然存在的问题是 ,学生在 "说〞英语这个环节还有待提高 ,大局部学生都不愿意开口朗读课文 ,所以复述课文便尚有难度 ,对于这一局部学生的学习成绩的提高还有待研究 .教学反思1 、要主动学习、虚心请教 ,不得偷懒 .老老实实做 "徒弟〞 ,认认真真学经验 ,扎扎实实搞教研 .2 、要勤于记录 ,善于总结、扬长避短 .记录的过程是个学习积累的过程 ,总结的过程就是一个自我提高的过程 .通过总结 ,要经常反思自己的优点与缺点 ,从而取长补短 ,不断进步、不断完善 .3 、要突破创新、富有个性 ,倾心投入 .要多听课、多思考、多改良 ,要正确处理好模仿与开展的关系 ,对指导教师的工作不能照搬照抄 ,要学会扬弃 ,在原有的根底上 ,根据自身条件创造性实施教育教学 ,逐步形成自己的教学思路、教学特色和教学风格 ,弘扬工匠精神 ,努力追求自身教学的高品位 .本资源的初衷 ,是希望通过网络分享 ,能够为广阔读者提供更好的效劳 ,为您水平的提高提供坚强的动力和保证 .内容由一线名师原创 ,立意新 ,图片精 ,是非常强的一手资料 .。

电视摄像试题A卷一、名词解释（共10分，每个词2分）1、电视画面2、画面素材3、镜头调度4、客观镜头5、电视制作手段二、填空题（共10分，每题1分）1、运动镜头结束的画面称为（）。

2、摄像机的标准色温是（）。

3、摄像机拍摄的几何角度包括（）和（）两方面的内容。

4、按照电视节目的性质和内容，电视摄像分为（）和（）两大类。

5、电视场面调度包括（）和（）两方面内容。

6、摄像师执机方式有（）（）和（）三种方式。

7、摄像机的光学特性由（）（）（）三个因素构成。

8、单一电视镜头所具有的时间特性表现为（）（）、（）。

9、摄像操作的基本要求是（）、（）（）（）。

10、电视摄像的造型元素包括（）、（）、（）、（）。

三、单项选择题（共10分，每题1分）1、电视摄像的宽容度通常为（）。

A、1： 16 B、1： 32 C、1： 64 D、1： 1282、（）镜头的还原效果容易产生桶形失真。

A、标准、B、长焦距&广角D、运动3、在拍摄人物小景别画面时，加用（）可以使人物的形象细腻柔和，弥补皮肤质感上的不足。

A、雾镜B、晕化镜C、近摄镜D、柔光镜4、如果要使电视画面偏暖色，校白选择的充满寻象器〃参照物〃应是（）。

A、冷色B、暖色C、白色D、标准色卡5、固定画面是（）不变的情况下拍摄的电视画面。

A、镜头光轴B、镜头焦距C、机位D、机位、镜头光轴、镜头焦距6、下列选项属于长镜头美学特征的是（）。

人、客观复原物质现实B、艺术化手法表现现实C、戏剧性D、创造时空7、3200K的滤色片适用于下列哪些场景的拍摄（）。

人、雪景B、晴朗的天气C、演播室D、海滩8、我国彩色电视采用的标准白光是 D 白，其色温是（）。

A、2854K B、6500K C、4800K D、5500K 9、（）是镜头内部的蒙太奇。

A、短焦距镜头B、长焦距镜头C、长镜头D、镜头的长短10、在照度足够的情况下使用负增益拍摄，可以提高（）。

A、重合精度B、信噪比C、灵敏度D、最低照度四、简答题（共30分，每题5分）1、固定画面有哪些功能？2、陪体在电视画面中有什么作用？3、怎样〃细调〃白平衡？什么情况下必须重新调整白平衡？4、简述电视场面调度的作用。

感谢你的观看
2018-2019学年第2学期期末考试试题（A）卷
课程名称任课教师签名
出题教师签名审题教师签名
考试方式（）卷适用专业
考试时间（）分钟
一、填空题(每空x分，共x分)（四号，黑体，1.5
1、当一零件受脉动循环变应力时，则其平
________。

正文（小四号字宋体 1.2倍行距；所有英文采用Times New Roman
字体）
二、选择题(每题x分，共x分)
1、螺栓的材料性能等级标成6.8，其数字6.8代表（
）。

（A）对螺栓材料的强度要求（B）对螺栓的制造精度要求
（C）对螺栓材料的刚度要求（D
三、判断题(每题x分，共x分)
1、变应力中，循环特征r=-1时，称为对称循环变应力。

（）
四、简答题(每题x分，共x分)
1、简述带传动中弹性滑动和打滑的概念，并说明两者的区别。

（x分）
1、试说出下图中各是哪一种键连接，在图中标出工作面的位置？（x分）（图居中）
六、计算题(每题x分，共x分)
2018-2019学年第二学期第十七周学校重要会议及活动预安排
感谢你的观看
注：1.20日—23日，xx书记、xcx校长带队赴华东理工大商谈合作事宜；2.本周，xx副校长带队前往日本考察学习；3.本周由xx副校长带队值周。

2019年6月17日
感谢你的观看
感谢你的观看。

课程名称:摄影摄像试卷类别：闭卷考试用时： 90 分钟总分： 100分一、填空题（每小题1分，共20分）1．摄影术诞生于1839年，创始人为法国的 ________。

2．照相机是能使感光胶片通过摄影镜头把景物逐张拍摄下来的工具。

它是由 _ _______ 、 ________、 ________三大部分组成。

3．按镜头的焦距与胶片画幅对角线长度的比值，镜头可分为： ________ 、 _ _______ 、 ________。

4．公安部门规定，居民身份证照片要求片幅为 ________mm；公安机关出入境管理部门规定新版护照的照片的规格为33mm×48mm，着白色服装的照片背景颜色必须用 ________色；拍摄驾驶证相片，要求背景为 ________色。

5．在室外自然光拍摄证件照最理想的光线条件是 ________ 。

6．标准灰板的反光率为 ________ 。

夜景人物纪念照所用闪光灯指数（GN）为24，如果人物离相机距离为4米，拍摄时应选用的光圈为 ________ 。

7．光圈的大小是由一系列的f／系数来表示的，f／后面的数字越小，表示光圈越 ________ ，进光量越 ________。

8．光圈除了能够控制光线的多少外，它的大小直接影响景深的大小，光圈越大，景深越 ________。

9.景别是指在画面上被“框”起的被摄景物或人物的大小范围。

景别分五种分别是远景、 ________、 ________ 、 ________ 、 ________ 。

二、选择题（每小题1分，共20分）1.快门的主要作用是：（）A.控制曝光量B.景物成像C.控制景深D.景物取景2.下列焦距镜头，哪一个视角大（）A.f=24mmB.f=45mmC.f=80mmD.f=135mm3.下面光圈f值系列中，哪一个通光量最大（）A.f/5.6B.f/2.8C.f/2D.f/114.当用1/60秒，f/8光圈曝光正确时，如用f/4光圈，曝光时间为（）A.1/30秒B.1/60秒C.1/125秒D.1/250秒5.同一距离，同一光圈下拍摄，下列镜头哪一个景深大：（）A.f=28mmB.f=50mmC.f=100mmD.f=200mm6.标准灰板的反光率是：（）A.18%B.25%C.50%D.75%7.被摄对象处在哪一种环境下，需要增加曝光量：（）A.海边B.沙滩C.空旷草地D.森林中8.拍摄人像的调焦应以哪个部位为准：（）A.头部B.鼻子C.瞳孔D.嘴巴9.国外摄影书籍中所称伦布朗光，其实就是：（）A. 顺光B. 侧光C.前侧光D. 逆光10.如果要拍得人像显得高大些，应选用角度是：（）A. 俯拍B. 斜拍C.仰拍D. 平拍11、产品摄影中，( )表现尤为重要，也更为困难。

2018～2019学年度第二学期期末统考试卷注意事项：（1）答卷前，考生务必用直径0.5毫米黑色墨水签字笔将自己的学校、姓名、班级、考点等信息填写清楚，并在规定位置贴好条形码。

（2）请将答案填写在答题卡相应位置上，否则作答无效，考试结束，只交答题卡。

（3）本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，满分150考试时间120分钟。

第Ⅰ卷（选择题，共60分）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i为虚数单位，z，则复数z虚部为（）A. ﹣2iB. 2iC. 2D. ﹣2【答案】C【解析】【分析】根据复数的运算法则，化简得，即可得到复数的虚部，得到答案.【详解】由题意，复数，所以复数的虚部为，故选C.【点睛】本题主要考查了复数概念，以及复数的除法运算，其中解答中熟记复数的运算法则是解答的关键，着重考查了推理与运算能力，属于基础题.2.已知直线l1：与直线l2：垂直，则的值为（）A. ﹣2B.C. 2D.【答案】A【解析】【分析】根据两直线垂直的条件，得到，即可求解，得到答案.【详解】由题意，直线l1：与直线l2：垂直，则满足，解得，故选A.【点睛】本题主要考查了两条直线的位置关系的应用，其中解答中熟记两直线垂直的条件是解答的关键，着重考查了推理与运算能力，属于基础题.3.数列满足是数列为等比数列的 ( )A. 充分不必要条件B. 必要不充分条件C. 充分必要条件D. 既不充分也不必要条件【答案】B【解析】分析：由反例得充分性不成立，再根据等比数列性质证必要性成立.详解：因为满足，所以充分性不成立若数列为等比数列，则，即必要性成立.选B.点睛：充分、必要条件的三种判断方法．1．定义法：直接判断“若则”、“若则”的真假．并注意和图示相结合，例如“⇒”为真，则是的充分条件．2．等价法：利用⇒与非⇒非，⇒与非⇒非，⇔与非⇔非的等价关系，对于条件或结论是否定式的命题，一般运用等价法．3．集合法：若⊆，则是的充分条件或是的必要条件；若＝，则是的充要条件．4.设是函数的导函数，的图象如图所示，则的图象最有可能的是A. B. C.D.【答案】C【解析】由导函数的图象可得当或时，，当时，，所以函数的增区间为和，减区间为。

广播电视大学2018-2019学年度第二学期期末考试（开卷）
影视特技及后期合成试题
2019年 5 月
一、填空题（本大题10题共15空，每空3分，共计45分）
1．Premiere 软件中，字幕文件的格式有____________和____________两种。

2．影视剪辑往往需要经过初剪、____________、____________、综合剪等步骤。

3．After Effects 软件是集创建、编辑、模拟、合成动画和电影于一体的超强桌面
____________软件，专门为电影和视频高效制作五彩缤纷的动态图像和视觉效果。

4．从一个镜头衔接到另一个镜头，有____________
和____________两种切换方式。

5．非线性编辑的一般制作流程可以简单地看成_________________、
_________________、输出3个部分组成。

6．Premiere pro CS4 软件内置____________类180多个视频特效。

7．在连接镜头时的基本规律是______________________________。

8．一般片头字幕的进出和停留时间不超过____________秒。

9．构成影视作品的最小单位是：____________。

10．非线性编辑系统由两大部分组成，即__________________和__________________。

影视特技及后期合成试题第 1 页共6 页。

2018-2019学年度第二学期期末质量检测★注意事项：1．本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分.满分150分.考试时间为120分钟.2．本试卷分试题卷和答题卷，第Ⅰ卷（选择题）的答案应填在答题卷卷首相应的空格内，做在第Ⅰ卷的无效.第I 卷第一部分听力(共两节，满分30分)做题时，先将答案标在试卷上。

录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。

第一节(共5小题：每小题1.5分，满分7.5分)听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Where are the speakers?A. In a bank.B. At a railway station.C. In a department store.2. When will the dinner party begin?A. At 7:15.B. At 7:00.C. At 6:45.3. What makes the man dislike his math teacher?A. Not helping him.B. Too much homework.C. Scolding him in public.4. What will the woman do for the man?A. Wash his clothes.B. Get him some fruit.C. Take him to the supermarket.5. What will the speakers most probably do this weekend?A. See a film.B. Climb a mountain. C . Play table tennis.第二节(共15小题;每小题1.5分，满分22.5分)听下面5段对话或独白。

2018-2019学年第二学期期末考命题内容：B8 Units1-5班级姓名座号成绩说明：1、本试卷分第I、II 两卷，考试时间：120分钟满分：150分2、Ⅰ卷的答案用2B铅笔填涂到答题卡上；Ⅱ卷的答案用黑色签字笔填写在答题卡上。

第Ⅰ卷（选择题共100分）注意事项：1．答题前，考生务必先将自己的姓名、准考证号填写在答题卡上。

2．考生作答时，请将答案答在答题卡上，请按照题号在各题的答题区域（黑色线框）内作答，超出答题区域书写的答案无效。

在草稿纸、试卷上答题无效。

3．选择题答案使用2B铅笔填涂，如需改动，用橡皮擦干净后，再选涂其他答案标号；非选择题答案使用0.5毫米的黑色中性（签字）笔或碳素笔书写，字体工整、笔迹清楚。

4．保持答题卡卡面清洁，不折叠，不破损。

考试结束后，将本试卷和答题卡一并交回。

第I卷第一部分：听力（共两节，满分30分）第一节(共5小题:每小题1.5分，满分7.5分)听下面5段对话.每段对话后有一个小题，从题中所给的A、B, C三个选项中选出最佳选项.并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回各有关小题和阅读下一小题。

每段对话仅读一遮。

1. What will Lucy do at 11:30 tomorrow?A. Go out for lunch.B. See her dentist.C. Visita friend.2. What is the weather like now?A. It's sunny.B. It's rainy.C. It's cloudy.3. Why does the man talk to Dr. Simpson?A. To make an apology.B. To ask for help.C. To discuss his studies.4. How will the woman get back from the railway station?A. By train.B. By car.C. By bus.5. What does Jenny decide to do first?A. Look for a job.B. Go on a trip.C. Get an as sistant.第二节(共15 "1"题:每小题1.5分，满分22.5分)听下面5段对话或独白。

2018-2019学年度第二学期期末考试第 I 卷(60 分)★请同学们将试题答案填涂在答题卡上本试卷分第Ⅰ卷 (选择题) 和第Ⅱ卷 (非选择题) 两部分, 共 100 分, 考试时间 100 分钟, 第Ⅰ卷 1 页至 8 页, 第Ⅱ卷 9 页至 11 页。

答卷前, 请务必将自己的姓名、考号、座号填写在答题卡上和密封线外相关位置。

答卷时, 务必将答案涂写在答题卡上, 答在试卷上的无效。

考试结束后, 将答题卡和答题纸一并收回。

祝各位同学考试顺利！第一部分:听力理解(共两节, 满分 7.5 分)第一节 (共 5 小题, 每小题 0.5 分, 满分 2.5 分)听下面 5 段对话。

每段对话后有一个小题, 从题中所给的 A、B、C 三个选项中选出最佳选项, 并标在试卷的相应位置。

听完每段对话后, 你都有 10 秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1.【此处有音频，请去附件查看】Where does the conversation most probably take place?A. In a car.B. In a restaurant.C. At home.【答案】B【详解】此题为听力题，解析略。

2.【此处有音频，请去附件查看】What is the woman?A. A musician.B. An actress.C. A writer.【答案】C【解析】【详解】此题为听力题，解析略。

3.【此处有音频，请去附件查看】What will the weather most probably be like this afternoon?A. Very hot.B. Comfortable.C. Cloudy.【答案】B【解析】【详解】此题为听力题，解析略。

4.【此处有音频，请去附件查看】How does the woman probably look now?A. Tired.B. Sorrowful.C. Painful.【解析】【详解】此题为听力题，解析略。

2018-2019学年下学期期末考试考试时间：120分钟分值：150分第I卷第一部分听力（1—20小题）在笔试结束后进行。

第二部分阅读理解（共两节, 满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

AHave you traveled abroad this year? Overseas travel has bec ome a trend in China. The China Tourism Academy released a report on Sept 8. It said that last year, Chinese mainlanders (大陆人) made 117 million trips overseas. The number will possibly hit 133 million this year, said the report.Countries and areas near the Chinese mainland were their fa vorites. Hong Kong, Macao and Thailand were the top three c hoices for visitors. United States, ranking No 8, was the mostpopular country outside of Asia.As for travelling, which is Chinese mainlanders’ favourite desti nation abroad?Hong Kong. B. Thailand. C. United States.D. Australia.The underlined word “hit” in Para1 can be probably replaced b y ________.decrease B. reach C. complete D. occurWhich statement is True according to the text?117 million Chinese people travelled abroad last year.It costs the largest amount of money to travel to Australia. The majority of Chinese mainlanders prefer distant journeys. More and more oversea trips will be made by Chinese mainla nders.BThe Coral Sea is home to an amazing variety of turtles, shark s, whales, dolphins, large fish, birds, corals, plants, and many other species. Many of these species are endangered elsewh ere in the world, but still survive in the healthy environment of the Coral Sea.The Coral Sea is a large series of coral reefs (礁) located off t he northeast coast of Australia. This area is three times larger than Australia’s famous Great Barrier Reef, which the Coral Sea borders.The Coral Sea is one of the few coral reef environments that have remained largely undamaged by over-fishing, oil and gas exploration and pollution. However, statisti cs show that coral reefs around the world are disappearing fiv e times faster than rainforests. It is very likely that in the near f uture the Coral Sea will face the same threats to its existence. The Australian government is currently looking at options for p rotecting the Coral Sea but has made no decisions. Environm entalists are pushing for laws to declare the Coral Sea area a marine (海洋的) protected area. This would mean a large “no-take zone” for fishermen, a no-exploration zone for gas and oil companies and a no-dump zone for pollution. This would make the Coral Sea a ma rine park larger than any in the world.We can write letters to Australian leaders, Australian environ mental protection agencies, and Australian friends, to let them know that people worldwide support this protection of the Cor al Sea. To lose this last great marine wildness would be a los s for the whole world.24. The Coral Sea is located ________.A. around AustraliaB. next to Great Barrier ReefC. far from Great Barrier ReefD. in the northwest of Australia25. What can we learn from Para 3?A. Coral reefs will survive longer than rainforests.B. The Coral Sea is completely in its original condition.C. Over-fishing is one of the main factors that damage the sea.D. There is no need to worry about the Coral Sea disappear ing.26. What is the author’s attitude towards the situation of the C oral Sea?A. Concerned.B. Negative.C. Indifferent.D. Doubtful.27. The author wrote this passage to ________?A. introduce the resources of the Coral Sea.B. show the amazing features of the Coral Sea.C. recommend people not to visit the Coral Sea.D. call for the public awareness to protect the Coral Sea.CWhen a special occasion arrives, a colorful gift bag or a box o ften finds its way to a doorstep (门口), an office desk or a mailbox. But once in a while, a present arrives at an unexpected moment as a reminder that someon e is thinking about us.Wanda Anderson of Richland, US, remembers such a gift.Seeing roses always brings to mind Wanda’s childhood mem ories. To this young girl, those flowers were a luxury. “We nev er had money to buy extra things, so even a tired rose was so mething to cherish,” Wanda said.Nowadays, to have a backyard filled with many different roses is pure enjoyment. Wanda especially loves the very first blooms. Her husband, Dale, devotedly tends (照顾) the roses and knows this little fact about his wife.On a particular morning, he picked the very first flowers of spri ng, fresh from the garden. But as Dale came back into the ho use, he was met by a neighbor who had stopped in for a quick visit. As the woman turned to go, Dale graciously (有风度地) handed the roses to her.Knowing her very precious first blooms go out the door filled h er with regret, and a bit of selfishness. Throughout the rest of the morning, Wanda argued with herself, knowing logically it was “better to give than to receive.” Nevertheless, she wished she could have kept the roses for herself.Later that day, the couple headed to the post office, where W anda waited outside in the car. Then, without warning, an olde r woman suddenly appeared at the car’s open window, with a bunch of multicolored roses in her arms. “These are for you,”she said, giving the flowers to Wanda. “They’re my first bloom s this sp ring.” Totally surprised and overwhelmed (不知所措的), Wanda thanked the woman and bent for a moment to inh ale (吸入) the roses’ rich fragrance. When she looked back, the mysterious visitor was gone.To this day, that “special delivery” changed Wanda. Now, her very first blooms always go to someone else, as a reminder th at someone is thinking of them.The underlined part “such a gift” refers to a gift that ________. is well chosenis worth your gratitudeneeds taking good care ofreminds you of somethingWhy did Dale give the roses to the neighbour?Because Wanda didn’t want to keep them.Because Dale wanted to show his friendliness.Because the neighbour liked the flowers more than Wanda. Because the colour of the flowers was not Wanda’s favourite. What can be concluded from the text?As a child, Wanda never cared about money.Wanda was impressed deeply by the neighbour.Wanda was willing to give the flowers to the neighbour.The neighbour presented Wanda with flowers in return for Wa nda’s kindness.Why does Wanda always give her first blooms to others?To express her regard.To prove her selflessness.To satisfy people in need.To show off her talented gardening.DScientists in Argentina have created the world’s first cow with two human genes that will enable it to produce human-like milk.Genetic engineering was used to introduce the “mothers’milk” genes into the animal before birth, according to the National I nstitute of Agribusiness Technology in Buenos Aires.As an adult, the cloned cow will produce milk that is similar to that of humans, which will prove a development of great impor tance for the nutrition of infants (婴儿). “The cloned cow, named Rosita ISA, is the first in the wor ld with two human genes that contain the proteins present in h uman milk,” said the institute.In April, scientists in China published details of research show ing that they had created dairy cows which produced milk con taining proteins found in human breast milk. But the Argentine team said the Chinese only introduced one human gene, while their research involved two, meaning the milk will more clos ely resemble that of humans.“Our goal was to raise the nutrition value of cows’ milk by addi ng two human genes, which do good to the immune system of the infants,” said Adrian Mutto, from the National University o f San Martin which worked with the institute.Cristina Kirchner, President of Argentina, said the scientific in stitute “makes all Argentines proud”. She also said that she h ad rejected the “honor” of having the cow named after her. “T hey came to tell me that the name is Cristina, but what woma n would like to have a cow named after her? It appeared to me to be more proper to call it Rosita.”32. What is the passage mainly about?A. Ways to improve “mothers’milk”.B. The importance of genetic engineering.C. A cloned cow to produce human-like milk.D. Advanced agricultural technology in Argentina.33. Which of the following can best replace “more closely rese mble” in Para 4?A. have more advantages overB. be more similar toC. have more nutrition thanD. be more different from34. The purpose of the study is to ________.A. create cows that can produce more milkB. introduce some genes into cows after birthC. make cows’ milk more like that of humansD. help babies grow cleverer and stronger35. What can be inferred from Cristina Kirchner’s statements?A. She felt it improper to be named after the cow.B. She considered it an honor to name the special cow.C. She was quite satisfied with the research done by the ins titute.D. She refused to give a name to the cow out of self-respect.第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

2018-2019-2期末考试试卷座位号_____第I卷第一部分阅读理解（共两节，满分40分）第一节 (共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

请将答案涂在答题卡上 AOne day a rich boy bought a magic mirror (镜子). When he got home, he looked in the mirror. Hisface looked sad. He tried to smile and make funny faces, his fac e looked still sad. Then he did manyhappy things, but his face always looked sad."Oh, what a terrible mirror! It doesn't work! " he said angrily. The next day on his way to buy some chocolate, he saw a lit tle girl crying sadly. The rich boy wentup to her and asked what had happened. The little girl said she c ouldn't find her parents. "Don't worry.I'll help you," the rich boy said. So they went to look for them tog ether. Finally they found her parents.They were so thankful for his help. After the rich boy arrived home, he looked in the mirror as usual. Tohis surprise, his face looked very happy. The boy understood the magic of the mirror. The mirror couldshow the true feelings of its owner. This was true-the rich boy had helped that little girl so he felt reallyhappy.1.The boy's face always looked _______ in the mirror on the first day.A. happyB. sadC. terribleD. fu nny2. Finally the rich boy _______.A. lost his parentsB. bought a new mirrorC. helped the little girl find her parentsD. bought a mirror for the little girl3. From the story we know the boy was _______.A. braveB. foolishC. cleverD. helpfulBWe chat （微信）is popular among us, but if someone deletes you or blocks(屏蔽）you on it，does it mean you've made him or her angry? The reasons mig ht be different.One reason may be that you have just left messages too ofte n without much valuable information. For example, the questi ons are those like 'how are you? ' 'what are you doing? ' 'do y ou love me?' too often. You know, people may feel bored afte r answering such kinds of questions time after time.Another possible reason may be that you've sent somethin g unpleasant to your friend or in your friend circle. I just block ed one of my middle school classmates yesterday because sh e was trying to sell fake goods in the friend circle, and I hate it quite much.Finally, Some people delete the one's name from friends' li st because they no longer want to see it and they don't want y ou to see their“Moments” (动态） on WeChat .Maybe they publish very private pictures or l ife or thoughts they don't want to share with you.So why you are blocked may depend on his or her mood or preference (喜好）, and the reasons why a person gets blocked are various from person to person. So I suggest you to write an email or make a phone call to that person if he or she really means a l ot to you to see why he or she is dissatisfied with you ,and to f ind out how you can make up for the case.4 .From paragraph 2, we can know if you are blocked that is b ecause ______.A . you are asking too many boring questionsB . your friend i s angryC . your friend like answering questionsD . your friend is busy .5. In paragraph3, the underlined word“ fake" refers to ______.A . 实惠的B . 假冒的C . 完美的D 昂贵的6. _______causes of being deleted or blocked are mentioned i n the passage.A .2B . 3C . 4D . 57. Which is the best title for the passage?A . Friend CircleB . Why Are You Blocked?C . A Popular Way of CommunicationD . How to Make Your Friend SatisfiedCBabysitter WantedI am seeking a babysitter for my 6-month-old son. A few hours on Saturdays and Sundays to help me a nd then other times as needed. He or she should be over 18, responsible, loving, warm, and have some experience in carin g for babies. This position also suits a college student with ex perience looking for a part-time job. The pay is $10 an hour. If this sounds like a good job to you, please reply to rebecharv @or call 800-4964.Office Manager WantedOur company is looking for a full-time experienced manager to run the business. Strong skills i n organisation and business management are required for thi s position. The office manager will be responsible for keeping financial (金融的) records, so he or she should be familiar with computers. Please reply to jim@or call 800-6978 to apply.Waiter/ Waitress WantedA restaurant is looking for an experienced waiter / waitress. K nowledge of wines and experience in dining are necessary. Must work well under pressure and understand the basics of fin e dining and customer service.If you’re interested, please contact us at job-tkupe-1329358152@to apply. This is a part-time job. Office Cleaner WantedLooking for a Part-time job? A position in the Mississauga area needs an office c leaner! Part-time 4 hours a day from 10:00 am - 2:00 pm. Duties include:●Cleaning the washrooms●Cleaning the furniture●Sweeping the floors●Other general cleaning Some experience is necessary. Pay: $15 per hourReplyto:job-p3b7u-1365632206@or call 800-8197.8.Which of the following position is a full-time job?A．Babysitter.B．Office man ager.C．Waiter / wa itress.D．Office clea ner.9.If a college girl with some experience caring for children wants to apply for a job, where should she send an email?A．job-p3b7u-1365632206@B．job-tkupe-1329358152@C．jim@californiaaquatics.comD．rebecharv@10.What can we learn from the passage?A．The office cleaner has to work three hours each day.B．One can apply for a waiteror waitress by telephone.C．A babysitter earns $5 morethan an office cleaner per hour.D．Experience is necessary for all these four jobs.11.Which of the following is necessary for a waiter / waitress?A．Being familiar with computers.B．Having knowledge of wines.C．Knowing more about menus.D．Working well with others.DWhen it comes to camels,(骆驼) we quickly think of the desert----usually the Sahara Desert of North Africa. But did you know th e camel was native first to North America? 40,000, 000 years ago, the camel probably got to Africa by migrating to South A merica. This was a large land mass that broke in two. The eas term part we now call Africa. The journey took millions of year s.Camels stand six to seven feet tall and weigh up to 1, 600 po unds. They have long, strong legs and powerful muscles. A c amel can carry as much as a thousand pounds for a short dist ance. But for a long distance, its typical load is about 400 pou nds.When a camel walks or runs, both legs on one side of its body move forward at the same time. Then the legs on the other si de swing forward. This leg action makes for a rocking motion. Some riders get “seasick”. This may be part of the reason wh y camels are sometimes called “ships of the desert”.A camels back is broad. It is too broad to let both of the rider’s feet hang down. There is no use for stirrups(马镫).Well, as for your hands, you can hold the reins (缰绳) gently. Once youget used to the camels constant rocking motion, though, you can almost fall asleep.12.What can we learn from the first paragraph?A. Camels migrated to Africa 1, 600 years ago.B. The Sahara Desert is located in South Africa.C. Camels were native to North America 40 million years ago.D. Africa and North America once belonged to one continent.13. What do we know about camels?A. They weigh 1,600 kilograms.B. They are six to seven feet t all.C. They have short, strong legs.D. They can carry 1,000 pounds for a long journey.14. Which of the following statements is TRUE according to the text?A. Stirrups are used to help the camel ridersB. Camels have a wider back than horsesC. People get “seasick” because camels are the “sh ips of the desert”.D. The camels rocking motion is caused by its long leg action.15. The author wrote the text mainly to________.A introduce B. argue C. compare D. entertain第二节（共5小题，每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

2018～2019学年度第二学期期末联考考生注意：1.本试卷由四个部分组成。

满分150分，考试时间120分钟。

2.考生作答时，请将答案答在答题卡上。

选择题每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑；非选择题请用直径0.5毫米黑色墨水签字笔在答题卡上各题的答题区域内作答，超出答题区域书写的答案无效，在试题卷、草稿纸上作答无效。

3.本卷命题范团：必修③、必修①。

第一部分听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

例：How much is the shirt?A.£19.15.B.£9.18.C.£9.15.答案是C。

1.Where might the speakers be?A.In a radio station.B.On the street.C.In the woman's office.2.Why can't the woman follow the latest fashions?A.She doesn't have too much moneyB.She knows nothing about fashions.C.She never cares about clothes3.What color is the furniture in the living room now?A.Yellow.B.Black.C.Brown.4.Who is Roger?A.The woman's child.B.The woman's pet.C The woman's neig hbor5..What did the woman tell the man to do?A，Post a letter.B.Get some bread.C Buy newspapers.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。

2018-2019学年第二学期期末试卷第一部分阅读理解(共两节，满分40分)第一节(共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

ASuppose you want to go abroad and learn about the foreign e xchange in culture in different countries.Here is some informat ion you may need.Name：Susan Lane Age：22Place：Reykjavik，Iceland,2005.Cost：7,000Organization：AFSExperience：“I think it was a turning point in my life.I began to understand more about my own culture by experiencing another culture and seeing how other people live.”Name：Sara Small Age：23Place：Crivitz，Germany,2011.Cost：8,000Organization：EF FoundationExperience：“I love the travelingand I made a lot of friends.I found the European school s to be hard but I am good at German now so it was wo rth it.I did miss my family and friends in Australia but I w ould love to do it again.”Name：David Links Age：16Place：Stuttgart，Germany,2011.Cost：6,000Organization：Southern Cross Cultural Exchange(SCCE) Experience：“I wanted to try something that was very different in cult ure.In Germany everything was different but I soon got settled.The family I was with was great and I really feel as though I have a second family.”Name：Tom Jennings Age：21Place：Conflans，France,2010.Cost：7,000Organization：SCCEExperience：“There were times when it was difficult but I liked it，experiencing a different culture.You just have to deal wi th each situation as it comes.If there is one thing you le arn when you are on a studentexchange program，it is how to take care of you rself.”Name：Linda Marks Age：19Place：Chonburi Province，Thailand,2009.Cost：3,500Organization：Rotary InternationalExperience：“There are lots of ups and downs，but you always come back for more.I had a few problem s but there was always someone to turn to and that was great.”1．Most of the students had their trips organized by . A．EF FoundationB．AFSC．Rotary InternationalD．SCCE2．The students who mentioned both the good and bad times as an exchange student include .A．Susan Lane and Sara SmallB．Linda Marks and David Li nksC．Tom Jennings and Linda MarksD． and Tom Jennings 3．Through the foreign exchange program，Tom Jennings learnt to .A．depend on himself and fit inB．accept advice and depend on himselfC．keep himself away from othersD．protect himself and oth ers4．For a student without much money，the best place would be .A．Iceland B．FranceC．Germany D．BIt was Thanksgiving morning and in the crowded kitchen of my small home I was busy preparing the traditional Thanksgivin g turkey when the doorbell rang. I opened the front door and saw two small c hildren in rags huddling together inside the storm door on the top step.“Any old papers, la dy?”asked one of them. I was busy.I wante d to say“no” until I looked down at their feet. They were weari ng thin little sandals, wet with heavy snow.“Come in and I’ll m ake you a cup of hot cocoa."They walked over and sat down at the table. Their wet sandal s left marks upon the floor. I served them cocoa and bread wit h jam to fight against the cold outside. Then I went back to the kitchen and started again on my household budget.The silence in the front room struck me. I looked in. The girl h eld the empty cup in her hands, looking at it. The boy asked in a flat voice. "Lady, are you rich?" I looked at my shabby slipc overs.The girl put her cup back in its saucer(碟子) carefully and said.“Your cups match your saucers." Her voice was hungry with a need that no a mount of food could supply. They left after that, holding their b undles of papers against the wind. They hadn' t said“Thank y ou.”They didn't need to. They had reminded me that I had somuch for which to be grateful. Plain blue china cups and sauc ers were only worth five pence. But they matched.I tasted the potatoes and stired the meat soup. Potatoes and brown meat soup, a roof over our heads, my man with a good steady job- these matched, too.I moved the chairs back from the fire and cleaned the living ro om. The muddy prints of smallsandals were stil wet upon my foor .Let them befor a while, I thought, just in case I should beginto forget how rich I am.5. Two children came to the writer's ront door becauseA. it was Thanksgiving DayB. they were beggarsC. they wanted old papersD. they wanted a cup of coco a6. The girl thought the writer was rich perhaps becauseA. she saw that the lady s room was comfortableB. she saw the cups matched the saucersC. the writer’s slipcovers were very newD. the wniter was preparing a big meal while she was too hun gry.7.From the passage, we can infer that whether you are rich depends onA. how much money you have hadB. how you feel about your lifeC. how you have helped othersD. what job your husband is d oing8.The writer left the muddy prints of small sandals on the floor for a while toA. show her husbanrd that someone had comeB. remind her that she had helped two childrenC. remind her that she was very rich in the neighborhoodD. remind her how life should beCHave you ever thought of getting in touch with your inner child from time to time? Obviously some people are willing to pay big money for the chance to do so in a proper environment.A Brooklynbased adult preschool is charging customers betwee n 333 and 999 for the chance to act like a kid again.At Preschool Mastermind in New York adults get to participate in showandtell，artsandcrafts such as finger paint，games like musical chairs and even take naps.The monthlong course also has class picture day where the adults are expec ted to have a field trip and a parent day.30yearold Michelle Joni Lapidos，the brain behind the adult preschool，studied childhood education and has always wanted to be a p reschool teacher.She’s always on the lookout for new ways to get people in touch with the freedom of childhood.A friend en couraged her to start the mastermind course instead. According to Candice，her blogger friend，Preschool Mastermind gives adults a chance to relearn and m aster the things that they failed to understand as children.“I re alized all the significance of what we had learned in preschool ，”said founder Michelle Joni.“People come here and get in to uch with their inner child.It’s magical.We are bringing ourselve s back to another place，another time with ourselves when we are more believing in ou rselves，more confident and ready to take on the world.”“One person’s here because they want to learn not to be so s erious，” Michelle said.“Another’s here to learn to be more co nfident.” She explained that most of the classes were planned .However，Joni added that while the planned activities were fun，it was often the spontaneous(自发的) moments that attracted students.“It’s the things you don’t plan for，the sharing between friends and learning from each other.”9．What is the purpose of Preschool Mastermind?A．To give adults a chance to return to childhood.B．To help parents understand their children better.C．To provide practical training courses for teachers.D．To introduce some ways of playing with children. 10．What is mainly discussed about Preschool Mastermind in Paragraph 2?A．Its customers. B．Its activities.C．Its environment. D．Its schedule.11．According to Candice，people come to this program to .A．enjoy freedom of thinking B．realize their childhood dre amsC．discover their inner abilitiesD．figure out childhood puzzle s12．What do we know about Michelle Joni?A．She used to be a preschool teacher. B．She likes to mak e plans in advance.C．She founded Preschool Mastermind.D．She gained confi dence by sharing.DDwight W. Morrow was an American ambassad (大使) to Mexico during the 1920s. He is re-membered as a smart diplomat (外交家). He is also remembered by his family and friends for his absent mindedness (心不在焉).Once while on a train, a conductor came to Morrow, asking fo r his ticket. He began to searchhis pockets. No ticket appeared. Morrow began searching his suitcase. "Never mind, sir." said theconductor, seeing how anxious Morrow was becoming and try ing to comfort (安慰) him.“When you find your ticket just post it to the station. I' m sure you have it somewhere." “I' m sure, too." said the diplo mat as he went on with his search.“But I must find it. I need to know where I' m going!"Another time Morrow got off a train in New York and hurried t o a telegraph office, where, feeling not unlike a small boy who had got lost, he sent the following to his secretary,“I am in Ne wYork but don’t know why." Within minutes came the short repl y: “You are not supposed to be inNew York. You should be in Princeton giving a lecture."13. The passage mainly shows Morrow 'sA. cleverness as a diplomatB. foolishnessC. sense of humorD. absent mindedness14. Morrow was very upset when he couldn’t find the ticket be causeA. he had forgotten where he was goingB. he would be punished if he couldn' t show his ticketC. the conductor looked impatient (不耐烦的)D. the conductor might think he was lying15. When Morrow got off the train in New York ,A. he forgot the addressB. he forget his suitcaseC. he did not know that he was in a wrong cityD. his secretary wasn’t there to meet him第二节(共5小题；每小题2分，满分10分)根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

2018-2019学年第二学期期末调研测试卷全卷共三道大题，满分150分，考试时间120分钟。

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，再选涂其它答案标号。

回答非选择题时，将答案写在答题卡，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（共12小题，每小题5分，满分60分）1.设集合，集合，则（）A. B. C. D.【答案】B【解析】【分析】求解出集合，根据并集的定义求得结果.【详解】本题正确选项：【点睛】本题考查集合运算中的并集运算，属于基础题.2.已知复数z满足i•z＝2+i，则z的共轭复数是（）A. ﹣1﹣2iB. ﹣1+2iC. 1﹣2iD. 1+2i【答案】D【解析】【分析】两边同乘-i，化简即可得出答案。

【详解】i•z＝2+i两边同乘-i得z=1-2i,共轭复数为1+2i，选D.【点睛】的共轭复数为3.某调查机构对全国互联网行业进行调查统计，得到整个互联网行业从业者年龄分布扇形图，90后从事互联网行业岗位分布条形图，则下列结论一定正确的是（）注：90后指1990年及以后出生，80后指1980﹣1989年之间出生，80前指1979年及以前出生A. 互联网行业从业人员中90后占一半以上B. 互联网行业中从事技术岗位的人数不超过总人数的20%C. 互联网行业中从事运营岗位的人数90后比80前少D. 互联网行业中从事技术岗位的人数90后比80后多【答案】A【解析】分析】看图计算即可。

【详解】A: 互联网行业从业人员中90后占56%,正确B、C、D不能确定，所以选A.【点睛】依据所给图表数据计算即可。

4.已知数列{an}为等差数列，Sn为其前n项和，2+a5＝a6+a3，则S7＝（）A. 2B. 7C. 14D. 28【答案】C【解析】【分析】先计算,在利用公式求出【详解】2+a5＝a6+a3，,选C.【点睛】本题考查等差中项，属于简单题。

2018-2019学年度第二学期期末联考一、选择题：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.直线在轴上的截距为( )A. B. C. D.【答案】A【解析】【分析】取计算得到答案.【详解】直线在轴上的截距：取故答案选A【点睛】本题考查了直线的截距，属于简单题.2.在，内角所对边分别为，且，则（）A. B. C. D. 1【解析】【分析】直接利用余弦定理求解.【详解】由余弦定理得.故选：C【点睛】本题主要考查余弦定理解三角形，意在考查学生对该知识的理解掌握水平，属于基础题.3.已知，则下列不等式成立的是( )A. B. C. D.【答案】D【解析】【分析】依次判断每个选项得出答案.【详解】A. ，取，不满足，排除B. ，取，不满足，排除C. ，当时，不满足，排除D. ，不等式两边同时除以不为0的正数，成立【点睛】本题考查了不等式的性质，意在考查学生的基础知识.4.若平面平面，直线，直线，则关于直线、的位置关系的说法正确的是( )A. B. 、异面 C. D. 、没有公共点【答案】D【解析】【分析】根据条件知：关于直线、的位置关系异面或者平行，故没有公共点.【详解】若平面平面，直线，直线，则关于直线、的位置关系是异面或者平行，所以、没有公共点.故答案选D【点睛】本题考查了直线，平面的位置关系，意在考查学生的空间想象能力.5.在前项和为的等差数列中，若，则=( )A. B. C. D.【答案】C【解析】【分析】利用公式的到答案.【详解】项和为的等差数列中，故答案选C【点睛】本题考查了等差数列的前N项和，等差数列的性质，利用可以简化计算.6.已知实心铁球半径为，将铁球熔成一个底面半径为、高为的圆柱，则( )A. B. C. D.【答案】B【解析】【分析】根据变化前后体积相同计算得到答案.【详解】故答案选B【点睛】本题考查了球体积，圆柱体积，抓住变化前后体积不变是解题的关键.7.已知点，，若直线过原点，且、两点到直线的距离相等，则直线的方程为( )A. 或B. 或C. 或D. 或【答案】A【解析】【分析】分为斜率存在和不存在两种情况，根据点到直线的距离公式得到答案.【详解】当斜率不存在时：直线过原点，验证满足条件.当斜率存在时：直线过原点，设直线为：即故答案选A【点睛】本题考查了点到直线的距离公式，忽略斜率不存在的情况是容易犯的错误.8.如图是某几何体的三视图，则该几何体的表面积为( )A. B. C. D.【答案】C【解析】【分析】根据三视图还原直观图，根据长度关系计算表面积得到答案.【详解】根据三视图还原直观图，如图所示：几何体的表面积为：故答案选C【点睛】本题考查了三视图，将三视图转化为直观图是解题的关键.9.如图，两点为山脚下两处水平地面上的观测点，在两处观察点观察山顶点的仰角分别为，若，，且观察点之间的距离比山的高度多100米，则山的高度为（）A. 100米B. 110米C. 120米D. 130米【答案】A【解析】【分析】设山的高度为，求出AB=2x，根据，求出山的高度.【详解】设山的高度为，如图，由，有.在中，，有，又由观察点之间的距离比山的高度多100，有.故山的高度为100.故选：A【点睛】本题主要考查解三角形的实际应用，意在考查学生对该知识的理解掌握水平，属于基础题.10.如果圆上总存在点到原点的距离为，则实数的取值范围为( )A. B. C. D.【答案】B【解析】【分析】将圆上的点到原点的距离转化为圆心到原点的距离加减半径得到答案.【详解】，圆心为半径为1圆心到原点的距离为：如果圆上总存在点到原点的距离为即圆心到原点的距离即故答案选B【点睛】本题考查了圆上的点到原点的距离，转化为圆心到原点的距离加减半径是解题的关键.11.已知数列的前项为和，且，则（）A. 5B.C.D. 9【答案】D【解析】【分析】先根据已知求出数列的通项，再求解.【详解】当时，，可得；当且时，，得，故数列为等比数列，首项为4，公比为2.所以所以故选：D【点睛】本题主要考查项和公式求数列通项，考查等比数列的通项的求法，意在考查学生对这些知识的理解掌握水平，属于基础题.12.如图，在四棱锥中，底面，底面为直角梯形，，，则直线与平面所成角的大小为( )A. B. C. D.【答案】A【解析】【分析】取中点，中点，连接，先证明为所求角，再计算其大小.【详解】取中点，中点，连接.设易知：平面平面易知：四边形为平行四边形平面，即为直线与平面所成角故答案选A【点睛】本题考查了线面夹角，先找出线面夹角是解题的关键.二、填空题（将答案填在答题纸上）13.在空间直角坐标系中，点关于原点的对称点的坐标为______．【答案】【解析】【分析】利用空间直角坐标系中，关于原点对称的点的坐标特征解答即可.【详解】在空间直角坐标系中，关于原点对称的点的坐标对应互为相反数，所以点关于原点的对称点的坐标为.故答案为：【点睛】本题主要考查空间直角坐标系中对称点的特点，意在考查学生对该知识的理解掌握水平，属于基础题.14.已知、满足约東条件，则的最小值为__________．【答案】【解析】【分析】根据约束条件，画出可行域和目标函数，通过平移得到最小值.【详解】.根据约束条件，画出可行域和目标函数，通过平移得到最小值：根据图像知：当时，有最小值为【点睛】本题考查了线性规划，求线性目标函数的最值:当时，直线过可行域且在轴上截距最大时，值最大，在轴截距最小时，z值最小；当时，直线过可行域且在轴上截距最大时，值最小，在轴上截距最小时，值最大.15.已知正数、满足，则的最大值为__________．【答案】【解析】【分析】直接利用均值不等式得到答案.【详解】，当即时等号成立.故答案为：【点睛】本题考查了均值不等式，意在考查学生的计算能力.16.已知数列中，且当时，则数列的前项和=__________．【答案】【解析】【分析】先利用累乘法计算，再通过裂项求和计算.【详解】，数列的前项和故答案为：【点睛】本题考查了累乘法，裂项求和，属于数列的常考题型.三、解答题.解答应写出文字说明、证明过程或演算步骤.17.已知等差数列的前项和为，且，.（1）求数列的通项公式；（2）请确定3998是否是数列中的项？【答案】（1）（2）第1000项【解析】【分析】（1）由题意有，解方程组即得数列的通项公式；（2）假设3998是数列中的项，有，得，即可判断得解.【详解】解：（1）设数列的公差为，由题意有，解得，则数列的通项公式为.（2）假设3998是数列中的项，有，得，故3998是数列中的第1000项.【点睛】本题主要考查等差数列基本量的计算，考查某一项是否是等差数列中的项的判定，意在考查学生对这些知识的理解掌握水平，属于基础题.18.已知函数(1)解关于的不等式；(2)若，令，求函数的最小值.【答案】（1）答案不唯一，具体见解析（2）【解析】【分析】(1)讨论的范围，分情况得的三个答案.(2) 时，写出表达式，利用均值不等式得到最小值.【详解】(1)①当时，不等式的解集为，②当时，不等式的解集为，③当时, 不等式的解集为(2)若时，令（当且仅当，即时取等号）.故函数的最小值为.【点睛】本题考查了解不等式，均值不等式，函数的最小值，意在考查学生的综合应用能力.19.在中，内角、、所对的边分别为、、，且.(1)求；(2)若，，求.【答案】（1）（2）【解析】【分析】(1)利用正弦定理化简为，再利用余弦定理得到答案.(2)先用和差公式计算，再利用正弦定理得到.【详解】(1)由正弦定理，可化为，得，由余弦定理可得，有又由，可得.(2)由，由正弦定理有.【点睛】本题考查了正弦定理，余弦定理，和差公式，意在考查学生的计算能力.20.如图，在直三棱柱中，，为的中点，为的中点.(1)求证：平面；(2)求证：.【答案】（1）见解析（2）见解析【解析】【分析】(1)连、相交于点，证明四边形为平行四边形，得到，证明平面(2) 证明平面推出【详解】证明：(1)如图，连、相交于点，，，，，，，∴四边形为平行四边形，，平面，平面，平面，…(2)连因为三棱柱是直三棱柱，底面，平面，，，，，，平面，平面，【点睛】本题考查了线面平行，线线垂直，线面垂直，意在考查学生的空间想象能力.21.已知数列中，，.(1)令，求证：数列为等比数列；(2)求数列的通项公式；(3)令，为数列的前项和，求.【答案】（1）见解析（2）（3）【解析】【分析】(1)计算，得证数列为等比数列.(2)先求出的通项公式，再计算数列的通项公式.(3)计算，根据错位相减法和分组求和法得到答案.【详解】(1)，，，故数列是以为首项，以为公比的等比数列.(2)由(1)知，由，得数列通项公式为.(3)由(2)知，记.有.两式作差得，得，则.【点睛】本题考查了数列的证明，数列通项公式，分组求和，错位相减法，意在考查学生的计算能力.22.在平面立角坐标系中，过点的圆的圆心在轴上，且与过原点倾斜角为的直线相切.(1)求圆的标准方程；(2)点在直线上，过点作圆的切线、，切点分别为、，求经过、、、四点的圆所过的定点的坐标.【答案】（1）（2）经过、、、四点的圆所过定点的坐标为、【解析】【分析】(1)先算出直线方程，根据相切和过点，圆心在轴上联立方程解得答案.(2) 取线段的中点，经过、、、四点的圆是以线段为直径的圆，设点的坐标为，则点的坐标为，将圆方程表示出来，联立方程组解得答案.【详解】(1)由题意知，直线的方程为，整理为一般方程可得由圆的圆心在轴上，可设圆的方程为，由题意有，解得：，，故圆的标准方程为.(2)由圆的几何性质知，，，取线段的中点，由直角三角形的性质可知，故经过、、、四点的圆是以线段为直径的圆，设点的坐标为，则点的坐标为有则以为直径的圆的方程为：，整理为可得.令，解得或，故经过、、、四点的圆所过定点的坐标为、.【点睛】本题考查了圆的方程，切线问题，四点共圆，定点问题，综合性强，技巧性高，意在考查学生的综合应用能力.2018-2019学年度第二学期期末联考一、选择题：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.直线在轴上的截距为( )A. B. C. D.【答案】A【解析】【分析】取计算得到答案.【详解】直线在轴上的截距：取故答案选A【点睛】本题考查了直线的截距，属于简单题.2.在，内角所对边分别为，且，则（）A. B. C. D. 1【答案】C【解析】【分析】直接利用余弦定理求解.【详解】由余弦定理得.故选：C【点睛】本题主要考查余弦定理解三角形，意在考查学生对该知识的理解掌握水平，属于基础题.3.已知，则下列不等式成立的是( )A. B. C. D.【答案】D【解析】【分析】依次判断每个选项得出答案.【详解】A. ，取，不满足，排除B. ，取，不满足，排除C. ，当时，不满足，排除D. ，不等式两边同时除以不为0的正数，成立故答案选D【点睛】本题考查了不等式的性质，意在考查学生的基础知识.4.若平面平面，直线，直线，则关于直线、的位置关系的说法正确的是( )A. B. 、异面 C. D. 、没有公共点【答案】D【解析】【分析】根据条件知：关于直线、的位置关系异面或者平行，故没有公共点.【详解】若平面平面，直线，直线，则关于直线、的位置关系是异面或者平行，所以、没有公共点.故答案选D【点睛】本题考查了直线，平面的位置关系，意在考查学生的空间想象能力.5.在前项和为的等差数列中，若，则=( )A. B. C. D.【答案】C【解析】【分析】利用公式的到答案.【详解】项和为的等差数列中，故答案选C【点睛】本题考查了等差数列的前N项和，等差数列的性质，利用可以简化计算.6.已知实心铁球半径为，将铁球熔成一个底面半径为、高为的圆柱，则( )A. B. C. D.【答案】B【解析】【分析】根据变化前后体积相同计算得到答案.【详解】故答案选B【点睛】本题考查了球体积，圆柱体积，抓住变化前后体积不变是解题的关键.7.已知点，，若直线过原点，且、两点到直线的距离相等，则直线的方程为( )A. 或B. 或C. 或D. 或【答案】A【解析】【分析】分为斜率存在和不存在两种情况，根据点到直线的距离公式得到答案.【详解】当斜率不存在时：直线过原点，验证满足条件.当斜率存在时：直线过原点，设直线为：即故答案选A【点睛】本题考查了点到直线的距离公式，忽略斜率不存在的情况是容易犯的错误.8.如图是某几何体的三视图，则该几何体的表面积为( )A. B. C. D.【答案】C【解析】【分析】根据三视图还原直观图，根据长度关系计算表面积得到答案.【详解】根据三视图还原直观图，如图所示：几何体的表面积为：故答案选C【点睛】本题考查了三视图，将三视图转化为直观图是解题的关键.9.如图，两点为山脚下两处水平地面上的观测点，在两处观察点观察山顶点的仰角分别为，若，，且观察点之间的距离比山的高度多100米，则山的高度为（）A. 100米B. 110米C. 120米D. 130米【答案】A【解析】【分析】设山的高度为，求出AB=2x，根据，求出山的高度.【详解】设山的高度为，如图，由，有.在中，，有，又由观察点之间的距离比山的高度多100，有.故山的高度为100.故选：A【点睛】本题主要考查解三角形的实际应用，意在考查学生对该知识的理解掌握水平，属于基础题.10.如果圆上总存在点到原点的距离为，则实数的取值范围为( )A. B. C. D.【答案】B【解析】【分析】将圆上的点到原点的距离转化为圆心到原点的距离加减半径得到答案.【详解】，圆心为半径为1圆心到原点的距离为：如果圆上总存在点到原点的距离为即圆心到原点的距离即故答案选B【点睛】本题考查了圆上的点到原点的距离，转化为圆心到原点的距离加减半径是解题的关键.11.已知数列的前项为和，且，则（）A. 5B.C.D. 9【答案】D【解析】【分析】先根据已知求出数列的通项，再求解.【详解】当时，，可得；当且时，，得，故数列为等比数列，首项为4，公比为2.所以所以故选：D【点睛】本题主要考查项和公式求数列通项，考查等比数列的通项的求法，意在考查学生对这些知识的理解掌握水平，属于基础题.12.如图，在四棱锥中，底面，底面为直角梯形，，，则直线与平面所成角的大小为( )A. B. C. D.【答案】A【解析】【分析】取中点，中点，连接，先证明为所求角，再计算其大小.【详解】取中点，中点，连接.设易知：平面平面易知：四边形为平行四边形平面，即为直线与平面所成角故答案选A【点睛】本题考查了线面夹角，先找出线面夹角是解题的关键.二、填空题（将答案填在答题纸上）13.在空间直角坐标系中，点关于原点的对称点的坐标为______．【答案】【解析】【分析】利用空间直角坐标系中，关于原点对称的点的坐标特征解答即可.【详解】在空间直角坐标系中，关于原点对称的点的坐标对应互为相反数，所以点关于原点的对称点的坐标为.故答案为：【点睛】本题主要考查空间直角坐标系中对称点的特点，意在考查学生对该知识的理解掌握水平，属于基础题.14.已知、满足约東条件，则的最小值为__________．【答案】【解析】【分析】根据约束条件，画出可行域和目标函数，通过平移得到最小值.【详解】.根据约束条件，画出可行域和目标函数，通过平移得到最小值：根据图像知：当时，有最小值为【点睛】本题考查了线性规划，求线性目标函数的最值:当时，直线过可行域且在轴上截距最大时，值最大，在轴截距最小时，z值最小；当时，直线过可行域且在轴上截距最大时，值最小，在轴上截距最小时，值最大.15.已知正数、满足，则的最大值为__________．【答案】【解析】【分析】直接利用均值不等式得到答案.【详解】，当即时等号成立.故答案为：【点睛】本题考查了均值不等式，意在考查学生的计算能力.16.已知数列中，且当时，则数列的前项和=__________．【答案】【解析】【分析】先利用累乘法计算，再通过裂项求和计算.【详解】，数列的前项和故答案为：【点睛】本题考查了累乘法，裂项求和，属于数列的常考题型.三、解答题.解答应写出文字说明、证明过程或演算步骤.17.已知等差数列的前项和为，且，.（1）求数列的通项公式；（2）请确定3998是否是数列中的项？【答案】（1）（2）第1000项【解析】【分析】（1）由题意有，解方程组即得数列的通项公式；（2）假设3998是数列中的项，有，得，即可判断得解.【详解】解：（1）设数列的公差为，由题意有，解得，则数列的通项公式为.（2）假设3998是数列中的项，有，得，故3998是数列中的第1000项.【点睛】本题主要考查等差数列基本量的计算，考查某一项是否是等差数列中的项的判定，意在考查学生对这些知识的理解掌握水平，属于基础题.18.已知函数(1)解关于的不等式；(2)若，令，求函数的最小值.【答案】（1）答案不唯一，具体见解析（2）【解析】【分析】(1)讨论的范围，分情况得的三个答案.(2) 时，写出表达式，利用均值不等式得到最小值.【详解】(1)①当时，不等式的解集为，②当时，不等式的解集为，③当时, 不等式的解集为(2)若时，令（当且仅当，即时取等号）.故函数的最小值为.【点睛】本题考查了解不等式，均值不等式，函数的最小值，意在考查学生的综合应用能力.19.在中，内角、、所对的边分别为、、，且.(1)求；(2)若，，求.【答案】（1）（2）【解析】【分析】(1)利用正弦定理化简为，再利用余弦定理得到答案.(2)先用和差公式计算，再利用正弦定理得到.【详解】(1)由正弦定理，可化为，得，由余弦定理可得，有又由，可得.(2)由，由正弦定理有.【点睛】本题考查了正弦定理，余弦定理，和差公式，意在考查学生的计算能力. 20.如图，在直三棱柱中，，为的中点，为的中点.(1)求证：平面；(2)求证：.【答案】（1）见解析（2）见解析【解析】【分析】(1)连、相交于点，证明四边形为平行四边形，得到，证明平面(2) 证明平面推出【详解】证明：(1)如图，连、相交于点，，，，，，，∴四边形为平行四边形，，平面，平面，平面，…(2)连因为三棱柱是直三棱柱，底面，平面，，，，，，平面，平面，【点睛】本题考查了线面平行，线线垂直，线面垂直，意在考查学生的空间想象能力.21.已知数列中，，.(1)令，求证：数列为等比数列；(2)求数列的通项公式；(3)令，为数列的前项和，求.【答案】（1）见解析（2）（3）【解析】【分析】(1)计算，得证数列为等比数列.(2)先求出的通项公式，再计算数列的通项公式.(3)计算，根据错位相减法和分组求和法得到答案.【详解】(1)，，，故数列是以为首项，以为公比的等比数列.(2)由(1)知，由，得数列通项公式为.(3)由(2)知，记.有.两式作差得，得，则.【点睛】本题考查了数列的证明，数列通项公式，分组求和，错位相减法，意在考查学生的计算能力.22.在平面立角坐标系中，过点的圆的圆心在轴上，且与过原点倾斜角为的直线相切.(1)求圆的标准方程；(2)点在直线上，过点作圆的切线、，切点分别为、，求经过、、、四点的圆所过的定点的坐标.【答案】（1）（2）经过、、、四点的圆所过定点的坐标为、【解析】【分析】(1)先算出直线方程，根据相切和过点，圆心在轴上联立方程解得答案.(2) 取线段的中点，经过、、、四点的圆是以线段为直径的圆，设点的坐标为，则点的坐标为，将圆方程表示出来，联立方程组解得答案.【详解】(1)由题意知，直线的方程为，整理为一般方程可得由圆的圆心在轴上，可设圆的方程为，由题意有，解得：，，故圆的标准方程为.(2)由圆的几何性质知，，，取线段的中点，由直角三角形的性质可知，故经过、、、四点的圆是以线段为直径的圆，设点的坐标为，则点的坐标为有则以为直径的圆的方程为：，整理为可得.令，解得或，故经过、、、四点的圆所过定点的坐标为、.【点睛】本题考查了圆的方程，切线问题，四点共圆，定点问题，综合性强，技巧性高，意在考查学生的综合应用能力.。