模拟题答案.pdf
广东省2024届高三下册高考化学仿真模拟试题(附答案)
广东省2024届高三下学期高考化学仿真模拟试题全卷共8页，20题。
全卷满分100分，考试用时75分钟可能用到的原子量：H1 Li7 C 12 O 16 K 39 Co 59一、选择题（本题共16小题，共44分。
第1～10小题，每小题2分；第11～16小题，每小题4分。
在每小题给出的四个选项中，只有一顼是符合题目要求。
）1．岭南文化源远流长，对社会的发展起着积极的推动作用。
下列地方文化涉及的材料主要成分不属于有机高分子化合物的是2．二十大报告提出科技创新是赢得未来发展主动权的必然选择。
下列说法错误的是A．“天和号”推进器上的氮化硼陶瓷属于有机高分子材料B．量子通信材料螺旋碳纳米管和石墨烯互为同素异形体C．“天宫”空间站中太空机械臂的主要成分为铝合金，其强度大于纯铝D．中国研制的微纳米光刻机，其材料之—四甲基氢氧化铵[(CH3)4NOH]可溶于水3．广东作为工业强省，是国内较早发展工业旅游的地区。
下列说法正确的的是A．罗浮山豆腐花现代全自动制作工艺——蛋白质溶液中加入石膏可发生变性B．东莞稻作智造之旅——水稻中的核酸可以水解为核苷和磷酸C．茂名油城之旅——石油的分馏、石油裂化均为物理变化D．广州药醉之旅——中医之米酒酿制过程涉及淀粉和葡萄糖的水解4．化学改善人类的生活，创造美好的世界。
下列生产生活情境中的化学原理正确的是选项生产生活情境化学原理A用洁厕灵（主要含浓盐酸）清洗马桶含氯化合物具有杀菌消毒功能B用铝槽运输浓硝酸浓硝酸与Al不反应C用FeCl3溶液腐蚀Cu刻制印刷电路板Fe比Cu金属性强D用聚乳酸塑料替代传统塑料以减少白色污染聚乳酸具有生物可降解性O82-+2I-2SO42-+I2，向溶液中5．水溶液中，过二硫酸盐与碘离子反应的离子方程式为：S加入含Fe3+的溶液，反应机理如图所示。
下列有关该反应的说法不正确的是A．向反应后的溶液滴加淀粉溶液，溶液变蓝，再适当升温，蓝色变浅B．Fe3+是该反应的催化剂，加入Fe3+后反应体系更快达到平衡C．反应①的速率比反应②的速率快D．反应②的离子方程式为2Fe2++ S2O82-2Fe3++2SO42-6．百服宁口服液为解热镇痛药，其主要化学成分的结构简式如图所示，下列有关该有机化合物的叙述正确的是H8NO2A．分子式为CB．碳原子杂化轨道类型只有sp2杂化C．1 mol该有机物最多与2 mol NaOH反应D．能发生氧化、还原、水解、消去反应7．设N A为阿伏加德罗常数的值。
五年中考三年模拟英语试题及答案PDF.pdf
A. what he does say hat he says C. how he says D. what does he say
4. ---___________ have you lived there?
---I’ve lived there __________ I left school.
2. They all felt _______ after a ________ bus ride.
A. happy; pleased B. pleasant; pleased C. pleased; pleasant D. happy; pleasure
3. No matter ___________, I won’t agree with him.
A. How long; since
B. How soon; when
C. How long; as soon as
D. When; since
5. This jacket is so nice, but it __________ too much.
A. pays
B. costs
C. takes
D. spend
（二）听对话和对话后的问题，选择正确答案（5 分）
1. A. Friday 2. A. Class 4, Grade 2. 3. A. Eggs and tea. 4. A. 8673305 5. A. Japan
B. Thursday. B. Class 5, Grade 2. B. Bread and tea. B. 8673350 B. Lday.
B. It’s a sunny day.
5. A. It’s my pleasure. B. I’m glad to hear it.
高考英语语法单句填空历年真题模拟专题五：情态动词和虚拟语气(word版有答案).pdf
情态动词和虚拟语气1. (2016 •北京,29)—Can't you stay a little longer?一It's getting late. I really_________go now. My daughter is home alone.2. (2016 •北京，34)If I_________(see) it with my own eyes,I wouldn't have believed it.3. (2016 •福建，27)—Sorry, Mum! I failed the job interview again.—Oh, it's too bad. You _________ have made full preparations.4. (2016 •安徽，32) It is lucky we booked a room, or we _________(have) nowhere to stay now.5. (2016 •四川，2)You_________be careful with the camera. It costs!6. (2016 •陕西，23)Ellen is a fantastic dancer. I wish I_________ (dance) as well as her.7. (2016 •天津)_________have worried before I came to the new school, for my classmates here are very friendly to me.8. (2016 •天1 wish I _________(be) at my sister's wedding last Tuesday, but I was on a business trip in New York then.9. (2016 •重庆，12) You _________ be Carol. You haven't changed a bit after all these years.10. (2015•湖南，25)—I’ve prepared all kinds of food for the picnic.—Do you mean we_________not bring anything with us?11. (2015•福建，32)_________(be) there no modem telecommunications, we would have to wait for weeks to get news from around the world.12. (2015•陕西）We would rather our daughter_________(stay) at home with us, but it is her choice, and she is not a child any longer.13. (2015•重庆，3) I，we ordered some pizza, so we _________ worry about cooking when we get home tired.14. (2015•重庆，13)It was John who broke the window. Why are you talking to me as if I_________(do) it?15 (2015•陕西，25)My book, The House of Hades,is missing. Who_________ have taken it?16. (2015•四川，6)I still remember my happy childhood when my mother _________ (will) take me to Disneyland at weekends.17 (2015•湖南) If Mr Dewey_________(be) present, he would have offered any possible assistance to the people there.18 (2014 •天津，9)No one_________be more generous; he has a heart of gold.19. (2014 •浙江，3)1_________(not enjoy) myself more—it was a perfect day.20 (2014 •天津，14) If he had spent more time practicing speaking English before, he_________(be) able to speak it much better now.21. (2014 •陕西，12)My mom suggests that we_________(eat) out for a change this weekend.22. (2014 •辽宁，31) Harry is feeling uncomfortable. He _________(drink) too much at the party last night.23. (2014 •新课标Ⅰ，29) The door_________ not open, no matter how hard she pushed.15. (2014 •重庆，29)—It rained cats and dogs this morning. I'm glad we took an umbrella.—Yeah, we would have got wet all over if we _________(have).24. (2014 •安徽，34)It_________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.25. (2014 •湖南，32) He_________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it26. (2014 •新课标II，6) Since nobody gave him any help, he _________ have done the research on his own.27. (2014 •重庆，26)—What are you doing this Saturday?—I'm not sure, but I _______ go to the Rolling Stones concert.28. (2014 •陕西，21)The children_________(get) lost in the wood ；otherwise, they would have been at the lakeside camp as scheduled.29. (2014 •安徽，28)I_________(go) to my cousin's birthday party last night,but I was not available.30. (2016 •河南洛阳第一次统考）The only thing that I _________do was that 1 wished her a long life.31 (2016 •温州八校高三联考）Since you have such good preparations, there _________ not be any problem about passing the coming job interview.32 (2016 •江西师大附中等五校联考）It has been accepted that all the students_________put on masks before going toschool in case they are infected with flu virus.33. (2016 •山西高三二诊）There was a little mouse staying at home all day. I_________ go out, even at night.34. (2015•甘肃会宁五中第三次月考）I have her telephone number. You_________call her if you like.35 (2015•河北衡水中学高三六调）I think something_________ have happened to Jill.36. (2015•新疆师大附中12 月月考）Some students prefer to consider majors first so that they_________ learn what they are interested in.37 (2015•辽宁大连六校期末联考）But he_________give up.38. (2015•甘肃白银会宁五中11月月考）Now I_______ like to ask you to look at some photographs if you don't mind39 (2015•安徽六校教研会联考）Anyone________be in a rough life time, whether he is "Bai Fumei" or "Gao Fushuai".专题综合测试一、单句填空1. I got up early this morning, but I_________ not have done so because I don't work on Sundays.2. He_________ have finished his report last night, but he was watching TV the whole night3. She_________ be nearly 90 years old now.4. All students_________wear school uniform in school.5. "If only I_________(can) turn back time, I would scold him severely," she said regretfully.6. If I_________(be) you, I，d talk to your English teacher. He might have some good ideas.7. It is the rule that no person_________ bring drinks into the student computer pool.8. —Will Tony come to the party tonight? —I'm not sure. He_________stay at home preparing for the coming exam.9. You should pay a lot of attention to children's ideas? sometimes they_________be really creative.10. You _________ use your cell phone here in our hospital because it's forbidden.11. It_________have been raining heavily when he got back home for he was wet all over.12. 1 wish I_________(know) what is going to happen.13. The old woman treats these boys as if they_________(be) her own children.14. It，s high time that we_________(get) down to our study. j15. When we worked in the same company, we_________often have coffee together.二、语法填空Passage 1Drunk driving, a major concern currently, is not a funny thing, (1)________ has killed many people and ruined the lives of many others. At present, traffic accidents become “the world's first harm”.Two months ago, after (2)________ (drink) a lot of alcohol, my friend's uncle drove his car home. He was (3)________ (heavy) drunk, but he still drove home by (4)________ . On the road near his home, an old lady was going across the road, (5)________ his uncle didn't notice her and he was still moving on under the influence of alcohol. And the old lady didn’t see his uncle, either. In the end, the lady di ed.(6)________ it not been for his uncle’s drunkenness, the terrible accident would not have happened.If the lady hadn’t died, she would live (7)________ happy life with her daughters and sons. And his uncle’s home was also destroyed by his uncle. Therefore, two (8)________ (family) were destroyed.I wish more people (9)________ (can) realize the seriousness of drunk driving and obey the traffic regulations faithfully. Always remember:refuse (10)________ (drink) and drive, and give a safe world to you and me!Passage 2Tasui is a teenager who lives in Africa. When he was young, he had polio(小儿麻搏症）. Although he wants to go to school, he (1)________ work.Tasui is only one of millions of children (2)________ can’t go to school. Many must work to support their (3)________ (family). Therefore, more than 100 million children will never receive an education. Can anything be done?Global Campaign for Education(GCE) thinks so. It was formed (4)________ (solve) this problem. The government aims to give every person, (5)________ (especial) those in poverty, an opportunity to get an education.(6)____ (establish) in 1999, GCE is made up of 120 organizations with members in almost 100 countries. Educationis a basic human right, (7)________ GCE campaigns to realize this right It works with governments to improve education in each country.Today, nearly (1)________ in (6)________ people around the world (8)________ read or write. Not being able to read impacts a person’s job opportunities and (9)________ (increase) poverty. GCE seeks to provide teaching materials in primary students’ mother tongues. Around the world, many girls are often denied an education. GCE aims to give women the same opportunities as menu GCE believes that education (10)________ change lives.Passage 3Last Saturday evening I arrived at the concert hall very early. The performance (1)________ (begin) at (7)________:(3)________0. All the seats were not free. We were so (2)________ (excite) by the special sound of heavy metal that we (3)________ help crying and jumping. Suddenly I heard the sharp sound of an ambulance and saw a young man (4)________ (take) out of the hall quickly. He (5)________ have been injured in the excitement, but this didn’t stop the concert. It still went on (6)________ (smooth). When the concert was over, the singer thanked us for our enthusiasm. We kept (7)________ (cheer) for some time. To tell the (8)________ , I’m really crazy about the singing with heavy metal. I wish I (9)________ (be) a singer of this type of popular music. And I think more and more people will become interested (10)________ it very soon.专题五情态动词和虚拟语气参考答案考点07 情态动词和虚拟语气一、试真题A组）新题速递1. must句意:-你不能再多待会儿吗？-太晚了。
2024届浙江省温州市普通高中高三下册英语模拟试题(三模)附答案
2024届浙江省温州市普通高中高三下学期英语模拟试题（三模）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。
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。
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. At a hotel.B. At an airport.C. At a cafe.2. How does the man's girlfriend feel now?A. Anxious.B. Confused.C. Annoyed.3. What's wrong with the printer?A. It's offline.B. It runs out of ink.C. It has a paper jam.4. What is the man doing?A. Giving comfort.B. Offering advice.C. Asking for help.5. What do we know about Lisa?A. She is a climbing enthusiast.B. She may refuse the invitation.C. She just had an adventure race.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。
湖北省黄冈中学2020年自主招生(理科实验班)预录考试数学模拟试题五(pdf版,含解析)
2020年黄冈中学自主招生（理科实验班）预录考试数学模拟试题五一、选择题（共5小题，每题4分，满分20分）1．（4分）下列图中阴影部分面积与算式|﹣|+（）2+2﹣1的结果相同的是（）A．B． C. D．2．（4分）如图，∠ACB=60°，半径为2的⊙O切BC于点C，若将⊙O在CB上向右滚动，则当滚动到⊙O与CA也相切时，圆心O移动的水平距离为（）A．2πB．4πC．2D．43．（4分）如果多项式x2+px+12可以分解成两个一次因式的积，那么整数p的值可取多少个（）A．4 B．5 C．6 D．84．（4分）小明、小林和小颖共解出100道数学题，每人都解出了其中的60道，如果将其中只有1人解出的题叫做难题，2人解出的题叫做中档题，3人都解出的题叫做容易题，那么难题比容易题多多少道（）A．15 B．20 C．25 D．305．（4分）已知BD是△ABC的中线，AC=6，且∠ADB=45°，∠C=30°，则AB=（）A．B．2C．3D．6二、填空题（共6题，每小题5分，满分30分）6．（5分）满足方程|x+2|+|x﹣3|=5的x的取值范围是．7．（5分）已知三个非负实数a，b，c满足：3a+2b+c=5和2a+b﹣3c=1，若m=3a+b ﹣7c，则m的最小值为．8．（5分）如图所示，设M是△ABC的重心，过M的直线分别交边AB，AC于P，Q两点，且=m，=n，则+=．9．（5分）在平面直角坐标系中，横坐标与纵坐标都是整数的点（x，y）称为整点，如果将二次函数的图象与x轴所围成的封闭图形染成红色，则此红色区域内部及其边界上的整点个数有个．10．（5分）如图所示：在平面直角坐标系中，△OCB的外接圆与y轴交于A （0，），∠OCB=60°，∠COB=45°，则OC=．(第10题图) (第11题图)11．（5分）如图所示：两个同心圆，半径分别是和，矩形ABCD边AB，CD分别为两圆的弦，当矩形ABCD面积取最大值时，矩形ABCD的周长是．三、简答题（共4小题，满分50分）12．（12分）九年级（1）、（2）、（3）班各派4名代表参加射击比赛，每队每人打两枪，射中内环得50分，射中中环得35分，射中外环得25分，脱靶得0分．统计比赛结果，（1）班8枪全中，（2）班1枪脱靶，（3）班2枪脱靶，但三个班的积分完全相同，都是255分．请将三个班分别射中内环、中环、外环的次数填入下表并简要说明理由：班级内环中环外环（1）班（2）班（3）班13．（12分）设二次函数y=ax2+bx+c的开口向下，顶点落在第二象限．（1）确定a，b，b2﹣4ac的符号，简述理由．（2）若此二次函数图象经过原点，且顶点在直线x+y=0上，顶点与原点的距离为3，求抛物线的解析式．14．（12分）如图，四边形ABCD为圆内接四边形，对角线AC、BD交于点E，延长DA、CB交于点F，且∠CAD=60°，DC=DE．求证：（1）AB=AF；（2）A为△BEF的外心（即△BEF外接圆的圆心）．15．（14分）在平面直角坐标中，边长为1的正方形OABC的两顶点A、C分别在y轴、x轴的正半轴上，点O在原点．现将正方形OABC绕O点顺时针旋转，当A点第一次落在直线y=x上时停止旋转．旋转过程中，AB边交直线y=x 于点M，BC边交x轴于点N（如图1）．（1）求边AB在旋转过程中所扫过的面积；（2）设△MBN的周长为p，在旋转正方形OABC的过程中，p值是否有变化？请证明你的结论；（3）设MN=m，当m为何值时△OMN的面积最小，最小值是多少？并直接写出此时△BMN内切圆的半径．2020年黄冈中学自主招生（理科实验班）预录考试数学模拟试题五参考答案与试题解析一、选择题（共5小题，每题4分，满分20分）1．（4分）下列图中阴影部分面积与算式|﹣|+（）2+2﹣1的结果相同的是（）A．B．C．D．【分析】先把算式的值求出，然后根据函数的性质分别求出四个图中的阴影部分面积，看是否与算式的值相同，如相同，则是要选的选项．【解答】解：原式=++==．A、作TE⊥X轴，TG⊥Y轴，易得，△GTF≌△ETD，故阴影部分面积为1×1=1；B、当x=1时，y=3，阴影部分面积1×3×=；C、当y=0时，x=±1，当x=0时，y=﹣1．阴影部分面积为[1﹣（﹣1）]×1×=1；D、阴影部分面积为xy=×2=1．故选B．【点评】解答A时运用了全等三角形的性质，B、C、D都运用了函数图象和坐标的关系，转化为三角形的面积公式来解答．2．（4分）如图，∠ACB=60°，半径为2的⊙O切BC于点C，若将⊙O在CB上向右滚动，则当滚动到⊙O与CA也相切时，圆心O移动的水平距离为（）A．2πB．4πC．2D．4【分析】连接O′C，O′B，O′D，OO′，则O′D⊥BC．因为O′D=O′B，O′C平分∠ACB，可得∠O′CB=∠ACB=×60°=30°，由勾股定理得BC=2．【解答】解：当滚动到⊙O′与CA也相切时，切点为D，连接O′C，O′B，O′D，OO′，∵O′D⊥AC，∴O′D=O′B．∵O′C平分∠ACB，∴∠O′CB=∠ACB=×60°=30°．∵O′C=2O′B=2×2=4，∴BC===2．故选：C．【点评】此题主要考查切线及角平分线的性质，勾股定理等知识点，属中等难度题．3．（4分）如果多项式x2+px+12可以分解成两个一次因式的积，那么整数p的值可取多少个（）A．4 B．5 C．6 D．8【分析】先把12分成2个因数的积的形式，共有6总情况，所以对应的p值也有6种情况．【解答】解：设12可分成m•n，则p=m+n（m，n同号），∵m=±1，±2，±3，n=±12，±6，±4，∴p=±13，±8，±7，共6个值．故选C．【点评】主要考查了分解因式的定义，要熟知二次三项式的一般形式与分解因式之间的关系：x2+（m+n）x+mn=（x+m）（x+n），即常数项与一次项系数之间的等量关系．4．（4分）小明、小林和小颖共解出100道数学题，每人都解出了其中的60道，如果将其中只有1人解出的题叫做难题，2人解出的题叫做中档题，3人都解出的题叫做容易题，那么难题比容易题多多少道（）A．15 B．20 C．25 D．30【分析】设容易题有x道，中档题有y道，难题有z道，然后根据题目数量和三人解答的题目数量列出方程组，然后根据系数的特点整理即可得解．【解答】解：设容易题有x道，中档题有y道，难题有z道，由题意得，，①×2﹣②得，z﹣x=20，所以，难题比容易题多20道．故选B．【点评】此类题注意运用方程的知识进行求解，观察系数的特点巧妙求解更简便．5．（4分）已知BD是△ABC的中线，AC=6，且∠ADB=45°，∠C=30°，则AB=（）A．B．2C．3D．6【分析】根据题中所给的条件，在直角三角形中解题．根据角的正切值与三角形边的关系，结合勾股定理求解．【解答】解：过点B作BE⊥AC交AC于点E．如下图设BE=x，∵∠BDA=45°，∠C=30°，∴DE=x，BC=2x，∵tan∠C=，∴=tan30°，∴3x=（3+x），解得x=，在Rt△ABE中，AE=DE﹣AD=﹣3=，由勾股定理得：AB2=BE2+AE2，AB==3．故选C．【点评】本题考查了解直角三角形中三角函数的应用，要熟练掌握好边角之间的关系．二、填空题（共6题，每小题5分，满分30分）6．（5分）满足方程|x+2|+|x﹣3|=5的x的取值范围是﹣2≤x≤3．【分析】分别讨论①x≥3，②﹣2＜x＜3，③x≤﹣2，根据x的范围去掉绝对值，解出x，综合三种情况可得出x的最终范围．【解答】解：从三种情况考虑：第一种：当x≥3时，原方程就可化简为：x+2+x﹣3=5，解得：x=3；第二种：当﹣2＜x＜3时，原方程就可化简为：x+2﹣x+3=5，恒成立；第三种：当x≤﹣2时，原方程就可化简为：﹣x﹣2+3﹣x=5，解得：x=﹣2；所以x的取值范围是：﹣2≤x≤3．【点评】解一元一次方程，注意最后的解可以联合起来，难度很大．7．（5分）已知三个非负实数a，b，c满足：3a+2b+c=5和2a+b﹣3c=1，若m=3a+b ﹣7c，则m的最小值为﹣．【分析】解方程组，用含m的式子表示出a，b，c的值，根据a≥0，b≥0，c≥0，求得m的取值范围而求得m的最小值．【解答】解：由题意可得，解得a=﹣3，b=7﹣，c=，由于a，b，c是三个非负实数，∴a≥0，b≥0，c≥0，∴﹣≥m≥﹣．=﹣．所以m最小值故本题答案为：﹣．【点评】本题考查了三元一次方程组和一元一次不等式的解法．8．（5分）如图所示，设M是△ABC的重心，过M的直线分别交边AB，AC 于P，Q两点，且=m，=n，则+=1．【分析】根据三角形的重心是三角形三条中线的交点，且重心到顶点的距离是它到对边中点的距离的2倍．可以分别过点B，C作BE∥AD，CF∥AD，交PQ 于点E，F，根据平行线等分线段定理和梯形中位线定理可得到两个等式，代入所求代数式整理即可得到答案．【解答】解：分别过点B，C作BE∥AD，CF∥AD，交PQ于点E，F，则BE ∥AD∥CF，∵点D是BC的中点，∴MD是梯形的中位线，∴BE+CF=2MD，∴+==+===1．【点评】此题考查了重心的概念和性质，能够熟练运用平行线分线段成比例定理、平行线等分线段定理以及梯形的中位线定理．9．（5分）在平面直角坐标系中，横坐标与纵坐标都是整数的点（x，y）称为整点，如果将二次函数的图象与x轴所围成的封闭图形染成红色，则此红色区域内部及其边界上的整点个数有25个．【分析】找到函数图象与x轴的交点，那么就找到了相应的x的整数值，代入函数求得y的值，那么就求得了y的范围．【解答】解：将该二次函数化简得，y=﹣[（x﹣4）2﹣]，令y=0得，x=或．则在红色区域内部及其边界上的整点为（2，0），（3，0），（4，0），（5，0），（6，0），（2，1），（2，2），（3，1），（3，2），（3，3），（3，4），（3，5），（4，1），（4，2），（4，3），（4，4），（4，5），（4，6），（5，1），（5，2），（5，3），（5，4），（5，5），（6，1），（6，2）共25个，故答案为：25．【点评】本题涉及二次函数的图象性质，解决本题的关键是得到相对应的x的值．10．（5分）如图所示：在平面直角坐标系中，△OCB的外接圆与y轴交于A （0，），∠OCB=60°，∠COB=45°，则OC=1+．【分析】连接AB，由圆周角定理知AB必过圆心M，Rt△ABO中，易知∠BAO=∠OCB=60°，已知了OA=，即可求得OB的长；过B作BD⊥OC，通过解直角三角形即可求得OD、BD、CD的长，进而由OC=OD+CD求出OC的长．【解答】解：连接AB，则AB为⊙M的直径．Rt△ABO中，∠BAO=∠OCB=60°，∴OB=OA=×=．过B作BD⊥OC于D．Rt△OBD中，∠COB=45°，则OD=BD=OB=．Rt△BCD中，∠OCB=60°，则CD=BD=1．∴OC=CD+OD=1+．故答案为：1+．【点评】此题主要考查了圆周角定理及解直角三角形的综合应用能力，能够正确的构建出与已知和所求相关的直角三角形是解答此题的关键．11．（5分）如图所示：两个同心圆，半径分别是和，矩形ABCD边AB，CD分别为两圆的弦，当矩形ABCD面积取最大值时，矩形ABCD的周长是16+12．【分析】此题首先能够把问题转化到三角形中进行分析．根据锐角三角函数的概念可以证明三角形的面积等于相邻两边的乘积乘以夹角的正弦值，根据这一公式分析面积的最大值的情况．然后运用勾股定理以及直角三角形的斜边上的高等于两条直角边的乘积除以斜边求得长方形的长和宽，进一步求得其周长．【解答】解：连接OA，OD，作OP⊥AB于P，OM⊥AD于M，ON⊥CD于N．根据矩形的面积以及三角形的面积公式发现：矩形的面积是三角形AOD的面积的4倍．因为OA，OD的长是定值，则∠AOD的正弦值最大时，三角形的面积最大，即∠AOD=90°，则AD=6，根据三角形的面积公式求得OM=4，即AB=8．则矩形ABCD的周长是16+12．【点评】本题考查的是矩形的定理以及垂径的性质，考生应注意运用勾股定理来求得边长继而才能求出周长．三、简答题（共4小题，满分50分）12．（12分）九年级（1）、（2）、（3）班各派4名代表参加射击比赛，每队每人打两枪，射中内环得50分，射中中环得35分，射中外环得25分，脱靶得0分．统计比赛结果，（1）班8枪全中，（2）班1枪脱靶，（3）班2枪脱靶，但三个班的积分完全相同，都是255分．请将三个班分别射中内环、中环、外环的次数填入下表并简要说明理由：班级内环中环外环（1）班（2）班（3）班【分析】本题可以通过设出内环、中环、外环射中的枪数为x，y，z；设脱靶数为t，根据等量关系“总得分=内环得分+中环得分+外环得分”列出函数方程进行分析，从而确定出各中枪数．【解答】解：填表如下：班级内环中环外环（1）班134（2）班232（3）班330理由如下：可设t枪脱靶，x枪射中内环，y枪射中中环，则有（8﹣x﹣y﹣t）枪射中外环，所以50x+35y+25（8﹣x﹣y﹣t）=255化简得y=5+2（t﹣x）+（1+t﹣x）对于（1）班，t=0，y=5﹣2x+（1﹣x），x为奇数，只能取x=1，得y=3；对于（2）班，t=1，y=7﹣2x+（2﹣x），x为偶数，只能取x=2，得y=3；对于（3）班，t=2，y=9﹣2x+（3﹣x），x为奇数，只能取x=3，得y=3；【点评】此题考查的是学生对函数方程的分析讨论并对某些值确定，同学们要注意细心分析．13．（12分）设二次函数y=ax2+bx+c的开口向下，顶点落在第二象限．（1）确定a，b，b2﹣4ac的符号，简述理由．（2）若此二次函数图象经过原点，且顶点在直线x+y=0上，顶点与原点的距离为3，求抛物线的解析式．【分析】（1）根据抛物线的开口向下判断a的符号，再根据第二象限点的坐标特点及二次函数的顶点坐标列出不等式组，确定出解答a，b，b2﹣4ac的符号即可．（2）根据抛物线过原点及顶点在直线x+y=0上求出其顶点坐标及一次项系数，再根据顶点与原点的距离为3求出二次项系数，进而求出其解析式．【解答】解：（1）∵抛物线开口向下，∴a＜0；∵顶点在第二象限，∴，∴b＜0，b2﹣4ac＞0．（2）由题意可得c=0，此时顶点坐标为（﹣，﹣），因顶点在直线x+y=0上，所以﹣﹣=0，b=﹣2．此时顶点坐标为（，﹣），由+=18，a=﹣，则抛物线的解析式为y=﹣x2﹣2x．【点评】本题考查的是二次函数的图象与系数的关系及用待定系数法求二次函数的解析式，掌握二次函数的特点是解题的关键．14．（12分）如图，四边形ABCD为圆内接四边形，对角线AC、BD交于点E，延长DA、CB交于点F，且∠CAD=60°，DC=DE．求证：（1）AB=AF；（2）A为△BEF的外心（即△BEF外接圆的圆心）．【分析】（1）根据圆内接四边形的性质和三角形的内角和定理进行证明；（2）根据三角形的外心到三角形的三个顶点的距离相等的性质只需证明AB=AF=AE，根据等腰三角形的性质和判定进行证明．【解答】证明：（1）∠ABF=∠ADC=120°﹣∠ACD=120°﹣∠DEC=120°﹣（60°+∠ADE）=60°﹣∠ADE，（4分）而∠F=60°﹣∠ACF，（6分）因为∠ACF=∠ADE，（7分）所以∠ABF=∠F，所以AB=AF．（8分）（2）四边形ABCD内接于圆，所以∠ABD=∠ACD，（10分）又DE=DC，所以∠DCE=∠DEC=∠AEB，（12分）所以∠ABD=∠AEB，所以AB=AE．（14分）∵AB=AF，∴AB=AF=AE，即A是三角形BEF的外心．（16分）【点评】综合运用了圆内接四边形的性质、三角形的内角和定理以及三角形的外心的性质．15．（14分）在平面直角坐标中，边长为1的正方形OABC的两顶点A、C分别在y轴、x轴的正半轴上，点O在原点．现将正方形OABC绕O点顺时针旋转，当A点第一次落在直线y=x上时停止旋转．旋转过程中，AB边交直线y=x 于点M，BC边交x轴于点N（如图1）．（1）求边AB在旋转过程中所扫过的面积；（2）设△MBN的周长为p，在旋转正方形OABC的过程中，p值是否有变化？请证明你的结论；（3）设MN=m，当m为何值时△OMN的面积最小，最小值是多少？并直接写出此时△BMN内切圆的半径．【分析】（1）S阴=S△OAB+S扇形OBB′﹣S△OAA′﹣S扇形OAA′，根据公式即可求解．（2）延长BA交y轴于E点，可以证明：△OAE≌△OCN，△OME≌△OMN 证得：OE=ON，AE=CN，MN=ME=AM+AE=AM+CN．从而求得：P=MN+BN+BM=AM+CN+BN+BM=AB+BC=2．即可求解．（3）Rt△BMN中，BM2+BN2=MN2，所以（1﹣n）2+（1﹣m+n）2=m2⇒m2﹣mn+2﹣m=0．把这个方程看作关于n的方程，根据一元二次方程有解得条件，即可求得．【解答】解：（1）如图，S阴=S△OAB+S扇形OBB'﹣S△OA'B′﹣S扇形OAA'=S扇形OBB′﹣S扇形OAA′=π﹣π×12=（2）p值无变化证明：延长BA交y轴于E点，在△OAE与△OCN中，∴△OAE≌△OCN（AAS）∴OE=ON，AE=CN在△OME与△OMN中，∴△OME≌△OMN（SAS）∴MN=ME=AM+AE=AM+CN∴P=MN+BN+BM=AM+CN+BN+BM=AB+BC=2；（3）设AM=n，则BM=1﹣n，CN=m﹣n，BN=1﹣m+n，∵△OME≌△OMN，=S△MOE=OA×EM=m∴S△MON在Rt△BMN中，BM2+BN2=MN2∴（1﹣n）2+（1﹣m+n）2=m2⇒n2﹣mn+1﹣m=0∴△=m2﹣4（1﹣m）≥0⇒m≥2﹣2或m≤﹣2﹣2，∴当m=2﹣2时，△OMN的面积最小，为﹣1．此时n=﹣1，则BM=1﹣n=2﹣，BN=1﹣m+n=2﹣，∴Rt△BMN的内切圆半径为=3﹣2．【点评】本题综合运用了扇形的面积公式，全等三角形的判定，三角形的面积公式以及勾股定理的综合应用，难度较大．。
2024届北京市东城区高三下学期英语模拟试题(一模)含答案
2024届北京市东城区高三下学期英语模拟试题（一模）本试卷共12页，共100分。
考试时长90分钟。
考生务必将答案答在答题卡上，在试卷上作答无效。
考试结束后，将本试卷和答题卡一并交回。
第一部分知识运用(共两节，30分)第一节(共10小题；每小题1.5分，共15分)阅读下面短文，掌握其大意，从每题所给的A、B 、C 、D四个选项中，选出最佳选项并在答题卡上将该项涂黑。
I hadn't seen Anne in nearly 20 years since college,yet we could still party like old times.It was great to have her here, 1 our lives.yard.Ijob.Iting at the few blooms(花)left in my yard.I hadn't planted much after losing my job.It had been a 2 me.Justor me.Just when I thought I was done with thebitterness,it would all come rushing back and the 3 thing on my mind was flowers.“One of my hobbies is taking photos of 4 season.Iaid and steadied herself near the last rose of the season.I shrugged(耸肩),wondering why anyone would. 5 taking timeto look at a lowly rose.Suddenly a hot song rang from her cell phone."I set it to remind me to take my medicine,”she said calmly.“An 6 for medicine?"I laughed.“Are we that old?”softly.Thatrain,”she smiled.“I have been diagnosed with a rare cancer,a small tumor (肿块)no bigger than your fingernail,”she laughed softly.That was Anne—ever 7 .Even cancer was no more than joking about.So 8 that I was beyond words.Later next day,an e-mail filled with the flower photos popped up from Anne—clear beautiful.Shebeautiful.She had gotten past the anger,the pity and unfairness,taking one momentat a time and polishing it until it 9 .I shifted my eye to outside,and I had her flowers in full bloom.Actually,I always had them,but it was Anne who got me to really 10 them.1.A.saving B.watching C.sharing D.controlling2.A.normal B.new C.satisfying D.difficultst B.same C.only D.right4.A.yards B.flowers C.parties D.people5.A.bother B.avoid C.miss D.stop6.A.award B.order C.alarm D.idea7.A.optimistic B.attractive C.hard-working D.confident8.A.nervous B.shocked C.relaxed D.lucky9.A.ended B.failed C.shined D.fruited10.A.arrange B.trust C.colour D.appreciate第二节语法填空(共10小题；每小题1.5分，共15分)阅读下列短文，根据短文内容填空。
2020年黄冈中学自主招生(理科实验班)预录考试数学模拟试题六及答案解析(pdf版 )
19．（15 分）某家电生产企业根据市场调查分析，决定调整产品生产方案，准备每周（按
120 个工时计算）生产空调器、彩电、冰箱共 360 台，且冰箱至少生产 60 台，已知生产
这些家电产品每台所需工时和每台产值如下表：
家电名称 空调
彩电
冰箱
工时
产值（千元） 4
3
2
问每周应生产空调器、彩电、冰箱各多少台，才能使产值最高最高产值是多少？（以千
14．解：如图，由勾股定理易得 AC=15，设 AC 的中点为 E，折线 FG 与 AB 交于 F，（折 线垂直平分对角线 AC），AE=7.5． ∵∠AEF=∴==．
∴EF=
．
∴折线长=2EF= ．
故答案为 ．
15．解：由方程 x2﹣3x+2=0 解方程的两个根是 1，2，即 a=1，b=2 故这组数据是 3，1，4，2，5
∴Px2007=
．
而 Qx2007（即 Px2007）在 y= 上，所以 Qy2007=
=
=
，
∴|P2007Q2007|=|Py2007﹣Qy2007|=|4013﹣
|=
．
故答案为： ．
13．解：∵图中扇形的弧长是 2π，根据弧长公式得到 2π= ∴n=120°即扇形的圆心角是 120° ∴弧所对的弦长是 2×3sin60°=3
，
故可得△ENK≌△EML，即阴影部分的面积始终等于正方形面积的 ． 故选 B．
4．解：设一支铅笔、一本练习本和一支圆珠笔的单价分别为 x、y 和 z 元，
根据题意得：
，
②﹣①得：x+3y=1.05③， ①﹣3③可得：2y=z， 故可得：x+y+2y=x+y+z=1.05． 故选 B． 5．解：方法 1、∵方程有两个不相等的实数根， 则△＞0， ∴（a+2）2﹣4a×9a=﹣35a2+4a+4＞0， 解得﹣ ＜a＜ ，
专四模拟试题附参考答案（2020年整理）.doc
专四模拟试题附参考答案（2020年整理）.doc专四模拟试题附参考答案（1）Part III Decide 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.The “standard of living” of any country means the average pe rson's share of the goods and services the country produces. A country's standard of living, ____31_______, depends first and 32 on its capacity to produce wealth. “Wealth” in this sense is not money, for we do not live on money 33 on things that money can buy: “goods” such as food and clothing, and “services”such as transport and “__34 __ ” .A country's capacity to produce wealth depends upon many factors, most of 35 have an effect on one another. Wealth depends 36 a great extent upon a country's natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a 37 climate; other regions possess none of them.Next to natural resources 38 the ability to turn them to use. China is perhaps as well 39 as the USA in natural resources, but suffered for many years from civiland 40 wars, and 41 this and other reasons was 42 to develop herresources. 43 and stable political conditions,and 44 _____ from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equallywell 45 by nature but less well ordered.A country's standard of living does not only depend upon the wealth that is produced and consumed 46 it own borders, but also upon what is indirectly produced through internationaltrade. 47 Britain's wealth in foodstuffs and other agricultural products would be much less if she had to depend onlyon 48 _ grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would 49 be lacking. A country’s wealth is, therefore, much influenced by its manufacturingcapacity, 50 that other countries can be found ready to accept its manufactures.31. A. however B. therefore C. nevertheless D. furthermore32. A. primary B. principal C. foremost D. uniquely33. A. or B. nor C. but D. except34. A. recreation B. enlightenment C. refreshment D. entertainment35. A. if B. them C.which D. that36. A. with B. for C.to D. on37. A. neutral B. favorable C.virtuous D. marine38. A. comes B. come C.coming D. came39. A. off B. known C.done D. furnished40. A. military B. external C.contemporary D. domestic41. A. for B. because C. because of D. due to42. A. Impossible B. Incapable C. unable D. proficient43. A. Strong B. Sturdy C. Sound D. Robust44. A. liberty B. freedom C.prevention D. liberation45. A .assisted B. avenged C.rescued D. served46. A. with B. within C. near D.without47. A. In short B. For example C. firstly D.On one hand48. A. those B. what C. that D. it49. A. likely B. likewise C. certainly D.otherwise50. A. provided B. depended C. given D.supposedPART IV GRAMMAR & VOCABULARY [15 MIN]There are thirty sentences in this section. Beneath each sentence thereare 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.51. We often advise him not to drink more wine __________is good for his health.A. asB. thanC.that D. but52. It is necessary that an efficient worker __________his work on time.A. accomplishesB. can accomplishC. accomplishD. has accomplished53. My father will be here tomorrow, but at first I thought that he__________ today.A. was comingB. is comingC. will comeD. come54. Without facts, we cannot form a worthwhile opinion for we need to havefactual knowledge __________ our thinking.A which to be based on B. which to be base uponC. upon which to baseD. to which to be based55. I didn't call to make my airline reservation, but I __________.A. should haveB. may haveC. must haveD. shall have56. It’s the first time that she has been to the United States,__________?A. isn't sheB. hasn't sheC. isn't itD. hasn't it57. I think that the labor bill will pass; it's ____________that it will.A. almost surelyB. very likelyC. near positiveD. quite certainly58. An increase in a nation's money supply, without an accompanying increase in economic activity, __________result in higher prices.A. tendsB. tends theC. tending toD. will tend to59. X-rays are able to pass through objects and thus make__________details that are otherwise impossible to observe.A. it visibleB. visiblyD. they are visible60. Prices for bikes at that store run__________250 dollars.A. as high asB. as high toC. so high toD. so high as61. He will not be __________ to vote in this year's election.A. enough oldB. as old enoughC. old enoughD. enough old as62. Thomas Jefferson's achievements as an architect rival his contributions __________a politician.A. suchB. moreC. asD. than63. According to the conditions of my scholarship, after finishing my degree__________.A. my education will be employed by the universityB. employment will be given to me by the universityC. the university will employ meD. I will be employed by the university64. If Bob's wife won't agree to sign the papers, ____________.A. neither he willB. neither will heC. neither won't heD. he won't neither65. _____ is generally accepted, economic growth is determined by the smooth development of production.A. WhatB. ThatC. ItD. As66. A violent revolution having broken out, all the ports of that country were laid under a(n) ______.A. boycottB. embargoD. ban67. Since_________ can't work in the United States without a permit, so it is of great importance for them to present their credentials to the government.A. emigrantsB. expatriatesC.migrants D. immigrants68. Most investors are taught at the very beginning that there is no place for __________in investment markets.A. feelingB. emotionC. passionD. sentiment69. I__________ my ordinary income by doing some part-time work.A. complimentB. ComplementC. supplementD. implement70. Before the statue could be __________to the United States, a site had to be found for it and a pedestal had to be built.A. transformedB.transportedC. transferredD. transmitted71. The final document was, of course, supposed to mend the damage__________upon the world by the war,A. imposedB. impressedC.compelled D. compressed72. Roger, who __________in courage, is highly respected by all his peers in the villages.A. boundsB. possessesC.declares D. abounds73. The tourists are told that the remotest village in this area is only_________ by a river.B. availableC.obtainable D. achievable74. He__________ interrupted me by asking irrelevant questions.A. continuallyB. continuouslyC.consistently D. constantly75. Being a man of _________ and public spirit. Mr. Russell labored zealously to advance the interest of the community and was much interested in bringing new manufacturing interests to Waterloo.A. firmB. enterpriseC. companyD. corporation76. When people do things wrong we should try hard to forgive them, as the idiom goes, “To ______ is human.”A. referB. conferC. deferD. err77. Although gaining a job as a real __________agent or broker may be relatively easy, beginning agents and brokers may face competition from well-established, more experienced ones.A. propertyB. estateC. houseD. assets78. The constitution of the State required that property should be__________for taxation at its market value.A. estimatedB. appraisedC.evaluated D. valued79. On June 15, 1909, after Scott finished his rushed plans for his________ to the South Pole, he departed from England.A. tourB. voyageC. expedition80. The government authority had to __________oil and other products so that it would not run out during war.A. shareB. fareC.provide D. rationPART V READINGCOMPREHENSION[25 MIN]In this section there are four passages followed by 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 AAll Sir William Jones wanted to do was to learn Sanskrit. While he was studying, however, he made a surprising discovery. This ancient language of India was amazingly similar to Latin and Greek. The Sanskrit word for "mother"—matar—was almost identical to the Latin word, mater. “Father” was pitar in Sanskrit, pater in Latin and Greek. The more he studied, the more similarities he found.How could this be? Thousands of miles and many natural barriers separated India and Europe. Still, Jones concluded, the similarities were too strong to be accidental. In 1786, he announced “No one could examine them all three, without believing them to have sprung from some common source.”Since then, scholars have traced many languages to this “common source.” Today, these languages are called the Indo-European family. But where did this source originate? Language and geography provide the clues. European languages have similar words for the animals and trees of northern Europe, such as oak, willow, bear, and wolf. There are no common words for the animals and trees of southern Europe.To scholars, this suggests that the Indo-European languages began in north central Europe. In time, some northern Europeans set out toward the east, settling in Iran, India, and Pakistan. Others migrated westward toward southern and western Europe. The root language developed into dozens of different languages, but the family resemblances remain. The word for “three” is drei in German, tres in Spanish, tre in Albanian, and tri in Russian.Almost every language in Europe is part of the Indo-European family, but there are exceptions. Hungarian and Finnish cling to other language families. High in the Pyrenees, the Basque people speak a language that has no known relatives. Perhaps the Basques were the original inhabitants of the region. Isolated by mountains, they may have been bypassed by the spread of Indo-European culture.81. What did Sir William Jones discover when he was learning Sanskrit?A. Sanskrit was very similar to some European languages.B. Sanskrit was an ancient language.C. The Sanskrit word for mother is the same as that in Latin.D. Latin and Greek were very similar.82. Which of the following statements is true about "the common source"?A. Jones found out the common source.B. All languages sprang from the common source.C. Only three languages sprang from the common source.D. Since 1786, scholars have traced many languages to the common source.83. Where did the common source originate?A. In southernEurope.B. In north-central Europe.C. InIndia.D. in Pakistan.84. What can be concluded from the passage?A. Jones first discovered the root language.B. The languages with the common source are called the Indo-European family.C. The root language developed into different languages as people migrated.D. Every language in Europe is part of the Indo-European family. TEXT BYour first culture shock came after you left your home country and you needed to adjust to the United States, It is now important to learn cultural information about your company, so that you will fit in and perform successfully. The people who make up this environment have their own customs, habits and expectations of each new employee. Gathering information that is formal (policy) and informal (traditions) will help you learn the professional norms and become fully accepted. Policies are corporate documents describing procedures, rules, and standards that guide decision making and conduct. They are similar to official laws that govern a country. Some sources of such written company information include the annual report, product or service brochures, technical and procedural manual, employee directory and the company newsletter. Organizational traditions are usually unwritten hut common practices that have evolved over time. They set the tone and philosophy of the particular corporation, just as the customs of a country do. The best way to learn such information is to observe and talk with others such as your supervisor and co-workers.You can supplement ideas from formal introductory materials given you earlier. Explore with fellow employees those behaviors that may be tolerated but frowned upon. Ask your supervisor for feedback to avoidtypical traps that could cause your co-workers to reject you as a professional. Keep this guide nearby, and refer to it often in private. Reviewing formal company procedures, handouts, written notes, ideas, comments from bosses and colleagues, together with materials in this handbook, will help you make a more healthy cultural adjustment.85. What is the purpose to learn cultural information?A. To know the U. S. A. better.B. To work better in the new environment.C. To make more money.D. To improve one's English.86. According to the passage, ___________ is not the policy's function.A. describing procedures, rules and standardsB. governing a countryC. helping to guide decision making and conductD. writing down the company's information87. ____________ is the best way to learn the organizational traditions.A. To read the policiesB. To study the philosophyC. To study a country's customsD. To observe and communicate with the colleagues and boss.88. How to make a more healthy cultural adjustment?A. Read this passage often.B. Discuss the organizational culture with your colleagues.C. Gather and review the formal and informal information in the corporation.D. Ask your boss for help.89. The passage is written to ___________.A. help readers to understand the organization's cultureB. explain the culture shockC. analyze the policies and traditionsD. help readers to work better with their supervisor and co-workersTEXT C“White hostility toward African Americans, and the resulting discrimination, have been fueled by a sense of threat. During slavery, many working-class whites, encouraged by slaveholders, feared the release of large numbers of blacks into the labor market and society in general. When northern industries used African Americans as strikebreakers in the first decades of this century, white workers feared the loss of their jobs. Today, many white Americans fear “black violence”. Moreover, specific fears about the “costs” of welfare as well as the "taking" of jobs through affirmative action have added to the fear of black violence.These fears have translated into negative stereotypes of African Americans as a people who are prone to crime and violence, unwilling to work, and a drain on the white taxpayer through their welfare dependency. In turn, these stereotypes have been used to justify informal discrimination, to prevent the help to the urban poor, to be negligent in enforcing laws or policies prohibiting discriminatory practices against black workers, and most important, to hesitate in making a serious effort at job creation for African Americans. The result is that African Americans’ share of valued resources has not increased much over the last two decades, even as formal discrimination has been greatly lessened. This fact is used to further the negative belief that African Americans have "not taken advantage of their equal opportunities."90. According to the passage, how did the northern industries make use of African Americans in 1900s?A. Sent them to ask the strikers to go back to work.B. Made them work very hard.C. Employed them to threaten the white strikers.D. Released them into the labor market.91. What is the ill influence of these negative stereotypes?A. Giving help to the poor black.B. Justifying informal discrimination.C. Enforcing laws prohibiting discriminatory practices against black workers.D. Creating opportunities of employment for the black.92. What can be inferred from "a drain on the white taxpayer" about the African Americans?A. They are unwilling to work.B. They never pay tax.C. They lack security.D. Their welfare depends on the white's tax.93. The author wrote the passage to tell us__________.A. African Americans pose a threat to the whites in employmentB. African Americans are dependent on the tax paid by the whitesC. African Americans are discriminated against because they are often on strikeD. the sense of threat intensifies the white's hospitality and discrimination against the African AmericansTEXT D“People thought of themselves as having rights from companies,” said Hoshua Freeman, a labor historian at Columbia University. That sense of entitlement grew even stronger in the early decades after World War II and collective bargaining became the arena for arguing out wages, pensions, health insurance, vacations, hours and job security.That system is disappearing today. Career-long attachments to one employer, a notion born in the 1920's, are no longer the .norm. The newclass-consciousness makes less distinction between workers and managers. Rights are relative, at best. An increasingly conservative electorate has reduced government's role in regulating the economy. Unions have lost influence and membership.What people do is try to cope, by themselves, said Ms. Skelly, of DYG. Self-employment is one solution, DYG's polls show, and that is a rising trend. "They try, on the job, to hide any weakness in their performance," she said. “They work longer hours and take work home, without letting the boss know, to give the impression that they can do difficult tasks quickly. There is nothing like, ‘we are all in this together.’ There is too much competition. People talk of their weakness to friends and spouses, but not to coworkers.”And many Americans feel in their hearts that the unemployment might be justified. “There is a sense among people that we are inefficient and bloated,” Ms. Skelly said. “And until they feel that is no longer true, they are reluctant to criticize the forces that are cutting out the fat and the inefficiencies.”94. It can be inferred from the second paragraph that ___________.A. people do not enjoy their rights nowadaysB. people are more likely to change their jobs than they were in the 1920'sC. workers and managers share the same rights todayD. nowadays, people refuse to take part in the Union95. According to Ms Skelly, which of the following is true?A. People like to work overtime.B. People want to work at home.C. People want to impress the boss with their capability and efficiency.D. People need help from their families, for they cannot cope with difficult problems themselves.96. People hide their weakness from___________.A. their parentsB. their wives or husbandsC. their friendsD. their colleagues97. The main idea of the passage is___________.A. people thought of themselves as having rights from companiesB. people's sense of entitlement is not as strong as it used to beC. people work at homeD. people regard unemployment as usualTEXT EYou may not have thought of it just this way, but the letter you write is part of you, and expression of your personality. Therefore to write letters that are mere patterns of form is to present a colorless personality.Letters, by their very nature, are too individual to be standardized. A letter may be absolutely perfect according to the standards of good taste and good form; but unless it also expresses something of the writer's personality, it is not a good letter.In other words, don't be satisfied to write letters that are just correct and nothing more. Try to write letters that are correct for you... letters that are warm and alive with reflections of your own personality.And if this sounds like a platitude (陈词滥调), stop for a moment and think back over your recent correspondence. What was the most interesting letter you received? Was it a letter anyone could have written? Or was it a letter that instantly “came alive” as you read it—that brought the personality of the sender right into the room with you. as though you were face to face, listening instead of reading?The fault with too many letters, today as in the past—the reason so many letters are dull and lifeless, and often fail to accomplish the purpose for which they are written is simply this: They sound exactly like the letters everyone else writes. They are neither exciting to receive nor stimulating to read.98. What does the author mean by saying “the letter you write is part of you”?A. Writing letters plays an important part in your life.B. When you write letters, you should be careful about what to write.C. People can see your personality from the letters you write.D. You should write good letters.99. What does the author want to explain in the fourth paragraph?A. A good letter presents one's personality.B. His opinion is a platitude.C. Letter-writing is interesting.D. Talking face to face is a better way to communicate than writing letters.100. The best title for the passage is___________.A. Letter WritingB. Personality in Letter WritingC. To Write Interesting LettersD. To Write Correct Letters PARTVI WRITING[45 MIN]SECTIONA COMPOSITION[35 MIN]We all know that men and women play different roles in modern society, and that they differ in many ways, such as how to perceive the world, how to tackle problems and how to approach people. Think about the issue and discuss the differentways in which men and women behave in terms of interpersonal relationships, expressing affection, friendship and views on beauty.Write on ANSWER SHEET TWO a composition of about 200 words on the following topic:The Different Approaches or Perceptions of Men and WomenYou are to write in three parts.In the first part, state your view on this issue.In the second part, support your view with details or examples.In the last part, bring what, you have written to a natural conclusion or a summary.Marks will be rewarded for content, organization, grammar and appropriacy. Failure to follow the instructions may result in a loss of marks.SECTIONB NOTE-WRITING[10 MIN]Write on ANSWER SHEET TWO a note of about 50-60 words based on the following situation:You are William or Aileen. You are invited this weekend to a farewell party hosted by your friend, Sandy, who is going abroad for his PhD. Study. However, you are unable to see him off. Write him a note politely declining his invitation and expressing your good wishes to him.Marks will be awarded for content, organization, grammar and appropriateness.参考答案Part III31-35BCCDC 36-40CBAAB 41-45ACCBD 46-50BBADAPart IV51-55BCACA 56-60CBDCA 61-65CCDBD 66-70BDDCB 71-75ADAAB 76-80DBBCDPart V81-84ADBC 85-89BBDCB 90-93CBDD 94-97BCDB 98-100CAB。
云南专升本英语模拟试题及答案[1]PDF
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云南省普通专升本英语模拟试题及答案（-）Part I Vocabulary and StructureSection ADirection s:l n this secti on, there are 10 in complete senten ces. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices.1. Childre n who are over protected by their pare nts may become .A. hurtB.damagedC.sopiledD.harmed2. The movie star with your sister, didn ' t he?A. was used to danceed to dancinged to danceD.was used to dancing3. _ looked up in alarm.A.AII the prese nt woma nB.AII the woma n prese ntC.The all woma n prese ntD.The all prese nt woma n4. The paint on the wall is still wet. _ !A.Be sure to not touch itB.Be not sure to touch itC.Be sure not to touch itD.Don 'tbe sure to touch it5. China has made a series of plans to __ the times.A.keep up withB.keep away fromC.keep in touch withD.put up with6. Bush con fide ntly America ns that the war aga inst Iraq will be won.A.e nsuresB.i nsuresC.assuresD.sure7. You should be _ with what you have.bi neB.contentfortD.contrary8.0ur public tran sportati on system is not for the n eeds of the people.A. no rmalpleteC.adequateD.perfect9. Jackson ' s songs are very popular among young people, who is regarded ____ other musicians.A. as superior tha nB.as more superior toC.as superior toD.as more superior tha n10. The necessity of criticism and self-criticism _that it helps us to correct our mistakes.A. c on sists ofB.con sists toC.lies inD.lies atSection BDirection s:There are 10 in complete sentences here. You should fill in each bla nk with the proper form of the word given in the brackets. Write the word or words in the corresponding space on the An swer Sheet.11.It is said the conference is __ (hold) in this hall next mon th.12. He would have give n you more help, if he _ (not be) so busy.13. Little did they realize that they __ (make) an importa nt discovery in scie nee.14. We would like to take this opport unity to express our sincere _ (appreciate) of your help.15. By the end of this year, Mr. Brow n _ (be) here for twenty years.16. Weather ___ (permit), the spaceship will be laun ched tomorrow evening.17. _(use) econo mically, on e tin of oil will last least two mon ths.18. We must keep ourselves __ (health) so that we can study well.19. He made a lot of mistakes in his letter because of _ (care).20. Five yards _ (be) what I ordered.Part II Read ing Comprehe nsionTask 1A:Shopping is an important part of any tourist ' s activities. Shopping leads as the number one activity while traveli ng for both domestic and intern ati onal travelers. The Travel In dustry Associati on of America （TIA）reports that shopping is an activity engaged in by 33 percent of domestic travelers.The U.S. Departme nt of Commerce reports that 90 perce nt of intern ati onal visitors shopped in theUn ited States in 2997 as part of their vacati on activities.An example of shopp ing ' s importanee is the Bayside Marketplace. The Rouse Company has created Miami —Dade Country ' s nu mber one visitor attract ion, Bayside Marketplace, which was launched in April 1987. It hasattracted more than 120 million visitors from South Florida and around the world. The Greater Miami Conven ti on &Visitors Bureau has repeatedly ide ntified Bayside as Miami — Dade County ' s nu mber one visitor attract ion, and Florida Trend magaz ine recently published a report naming Bayside as the fifth —most -/isited attraction in the state of Florida.Bayside has nearly 140 shops offering a variety of merchandise（商品）in both the North and South Pavili ons and Pier 5 Marketplace .In additi on, Hard Rock Caf and nine additi on alfull ——servicerestaura nts offer everyth ing from differe nt coun tries. For visitors on the run, the Intern ati onal Food Court offers 20fast food eateries（餐馆）.Bayside is also the only entertainment venue（聚会地点） in the city offeri ng free con certs 365 days a year.21. According to TIA, which activity is the first one for domestic travelers?A. Sightsee ing.B. Shopp ing.C. Singing.D. Dancing.22. How many percent of international visitors shopped in the United States in 1997 as part of their vacati onactivities?A. 60 perce nt.B. 70 perce nt.C. 80 perce nt.D. 90 perce nt.23. When was Bayside Marketplace lau nched?A. In April, 1978.B. In March, 1997.C. In April, 1987.D. In March, 1978.24. What kind of restaura nts provide foods for visitors on the run?A. Fast Food restaura nts.B. Local Sn ack Bars.C. Hard Rock Caf . eD. Full —service restaura nts.25. W hich market is the only en terta inment place in Miami —Dade County offeri ng con certs a year round?A. Bayside Market.B. The North Pavilio n.C. The South Pavilio n.D. Pier 5 Marketplace.B:Men sometimes say, We are better and cleverer tha n wome n. Wome n n ever inven ted thin gs. We do. ” It is true that men have inven ted a lot of useful thin gs: mach in es, rockets, and guns, too. But scie ntists now agree thatwome n inven ted one very importa nt thin g. It has cha nted history. They inven ted agriculture.Before the inven ti on of agriculture men were hun ters. They went out every day. Sometimes they killed ani mals, and sometimes ani mals killed them. Life was difficult and dan gerous. Wome n had to go out everyday, too. Theycollected roots, fruits and grass.Then, one day, more tha n 10,000 years ago, a woma n dropped some grass seeds. She dropped them n ear herhome in the Middle East. They grew, and the first wheat was born. The idea grew, too. Wome n pla nted roots andfruit trees. Then they could stay at home and look after childre n and the animals. Women like baby animals.Scientists think that women kept the first domestic ani mals: dogs, cows, sheep and goats. Then their husba nds didnot have to go hunting for meat. They stayed at home. They built villages and cities. Civilizati on bega n. Men bega ncivilizati on — after wome n inven ted agriculture.26. Me n believe that they are better and cleverer tha n wome n becauseA. they invent thingsB. they do their work wellC. they cha nge historyD. they run mach ines27. Before the inven ti on of agriculture, men went out .A. to collect ani malsB. to find an imalsC. to hunt ani malsD. to kill ani mals28. One day, more tha n 10,000 years ago, a woman .A. found wheatB. pla nted fruit treesC. let fall some grass seedsD. grew vegetables29. From the passage, it can be con cluded that womenA. started civilizatio nB. knew what civilizati on wasC. helped a lot to start civilizati onD. un derstood how importa nt civilizati on was30. The author wrote the article just to tell us .A. how agriculture was related to civilizati onB. we owe our civilizatio n to wome nC. what men had done before agriculture startedD. when civilization beganC:On li ne services are man aged by a host system that mai ntai ns a base of in formatio n available to satellite users.Users of so-called “ dumb” term in als (i.e., those without processiapability)simply access the in formatio n base via programs stored on the system. Pers onal computer (PC) users typicallyaccess the host through a modem (调制解调器).A PC software program serves as an in terface (接口) betwee n the server and a PC, allowi ng the user to operate through the on li ne system and select differe nt databases using akeyboard of a mouse.Nati onal and regi onal on li ne systems usually have local teleph one nu mbers that PC modems can call to accesseither a local in formatio n base or an in direct Ion g-dista nce conn ecti on, thus reduci ng Ion g-dista nce teleph onefees. Some on li ne systems allow users to copy large volumes of information onto a local memory storage device,which also reduces the time the user is connected to the online system.Besides offeri ng a great nu mber of differe nt in formati on based, ranging from full-text jour nal libraries to reports ofmissing children, online services allow users to , for example, reserve airline tickets, buy stocks, purchase goods, andcom muni cate with other users .In excha nge for theservice, users usually pay a mon thly membership gee. They may also pay to connect to various databases on the service or to dow nl oad in formati on.31. On li ne services work by provid ing users with .A. a base of in formatio nB. dumb termi nalsC. a host systemD. a satellite32. How can the users of termi nals without process ing capability acquire the n ecessaryin formatio n?A. They can simply use a keyboard or a mouse.B. They should use a modem to maintain the host system.C. They should connect their computer to a satellite system.D. They can access its base through the programs on the system.33.If you copy the on li ne in formati on onto your PC device, you will .A. save the time of connecting to the online systemB. reduce the risk of los ing in formati onC. pay just local teleph one chargesD. get local in formati on only34.If you want to read full-text journals online, you usually have to __ .A. seek for a large amount of in formatio nB. be conn ected to various databasesC. be in troduced by the local libraryD. pay a mon thly membership fee35.The passage is mainly about _ .A. the payment for online servicesB. the functions of on li ne servicesC. the developme nt of on li ne servicesD. the relation between online services and the usersTask 2A job applicant has the responsibility for ascertaining certain types of information prior to the in terview. First, the applica nt should now what kind of job he wants and how that job relates to his career objective. It is importa nt work for a particular compa ny. Second, the applica nt should seek as much in formatio n as possible concerning the compa ny. Releva nt in formatio n for the applica nt to locate includes such items as the location of the home and regional offices, the financial status of the compa ny, pla ns for expa nsion, and compa ny philosophy .In formati on about most major corporation is available in reference books and periodicals.In formatio n n eeded to be known before in terview:A. about the applica nt himself:1. ___ 36_____2. ___ 37_____B. about the compa ny:1. ___ 38 ____2. ___ 39 ____3. ___ 40___Task 3Directions : The following are some words about network in a textbook. After reading it, you are required to find the Chin ese equivale nts in the table below. Then you should put the corresp onding letters on the An swer Sheet.A —cen tral process ing un itB —computer-aided desig nC—data process ingD —desktop operati ng systemE—dialogue boxesF—disk driveG—dow nl oadH —drag and dropI —electro nic commerceJ—floppy diskK —home pageL —host computerM —in k-jet prin terN —laser jet prin terO—office automati onExamples: (B)计算机辅助设计(G)下载41.()主机（）喷墨打印机42.（）办公自动化（）对话框43.（）数据处理（）电子商务44.（）拖放（）激光打印机45.（）软磁盘（）磁盘驱动器Task 4Direction s:After readi ng the passage, you are required to complete the stateme nts below it. You should write your an swers briefly on the An swer Sheet.The rules for writing an abstract are almost the same to those for writing the summary of an in vestigati on report .In an abstract you(1)make an outl ine of the problem and the purpose of your in vestigati on ,(2)me nti on very briefly how you con ducted the in vestigati on or tests, (3)describe your main findin gs, and (4)make the con clusi ons. All this must be done in as few words as possible: ideally, your abstract will be about 125 words long and n ever more tha n 250 words.From the abstract, readers must be able to decide whether the information you provide in the scientific paper or report is particularly interesting to them and whether they should read further. Because a scie ntific paper is written for readers who gen erally are familiar with your tech ni cal or scientific discipline, you may use technical terminology in the abstract. The abstract should be written last, when the whole paper has been written, so that you can make an abstract of the brief details you n eed from what you have already writte n.46. How will you write an abstract? You should write it in as _ as possible.47. What should be described in the abstract? Our _ .48. What are the readers likely to do if they find the abstract in teresti ng?The readers are likely to _ .49. Why can you use tech nical term ino logy in the abstract?Because your readers are usually __ your scie ntific discipli ne.50. Whe n should you write the abstract?After you have finished __ .Part IIIDirections:This part is to test your ability to translate English into Chinese. After each of the senten ces, you will read four choices of suggested tran slati on. You should choose the best one and mark the corresp onding letter on your An swer Sheet.51. W hat is esse ntial is that both sides share mutual un dersta nding and support.A. 重要的是双方互相理解，互相支持。
2023-2024学年上海市高考数学质量检测模拟试题(二模)含答案
2023-2024学年上海市高考数学模拟试题（二模）一、填空题（本大题共有12题，满分54分，第1～6题每题4分，第7～12题每题5分）考生应在答题纸的相应位置直接填写结果．1.若():1,2x α∈，[]:0,2x β∈，则α是β的______条件．【正确答案】充分非必要【分析】判断集合()1,2和[]0,2之间的关系，即可判断出答案.【详解】由于()1,2是[]0,2的真子集，故α是β的充分非必要条件，故充分非必要2.若34(sin (cos )55z i θθ=-+-是纯虚数，则tan θ的值为__________．【正确答案】34-【详解】分析：由纯虚数的概念得305405sin cos θθ⎧-=⎪⎪⎨⎪-≠⎪⎩，结合221sin cos θθ+=可得解.详解：若34sin cos 55z i θθ⎛⎫⎛⎫=-+- ⎪ ⎪⎝⎭⎝⎭是纯虚数，则305405sin cos θθ⎧-=⎪⎪⎨⎪-≠⎪⎩，又由221sin cos θθ+=，可得34sin cos 55θθ==-.所以sin 3tan cos 4θθθ==-.故答案为34-.点睛：本题主要考查了纯虚数的概念及同角三角函数的基本关系，属于基础题.3.已知幂函数f（x）的图象经过点（2，4），则f（x）为______函数．（填奇偶性）【正确答案】偶【分析】根据幂函数的概念设出()f x 的解析式()f x x α=，然后代点求出α，再用函数奇偶性定义判断奇偶性．【详解】因为函数()f x 是幂函数，所以可设()f x x α=，又f（2）=4，即2a=4，解得a=2，∴()2f x x =，∴()()22()f x x x f x -=-==，∴f（x）为偶函数．故答案为偶．本题主要考查了幂函数的基本概念，以及利用定义法判定函数的奇偶性，其中解答中熟记幂函数的基本概念，熟练应用函数奇偶性的定义判定是解答的关键，着重考查了推理与运算能力，属于基础题.4.若双曲线经过点，且渐近线方程是y ＝±13x ，则双曲线的方程是________．【正确答案】2219x y -=【分析】利用渐近线方程为13y x =±，设双曲线的方程是229x y λ-=，代入点即可求解【详解】根据渐近线方程为13y x =±，设双曲线的方程是229x y λ-=，因为双曲线过点，所以9219λ=-=，所以双曲线的方程为2219x y -=故2219x y -=5.已知命题：“非空集合M 的元素都是集合P 的元素”是假命题，给出下列四个命题：①M 的元素不都是P 的元素；②M 的元素都不是P 的元素；③M 中有P 的元素；④存在x M ∈，使得x P ∉；其中真命题的序号是________（将正确的序号都填上）.【正确答案】①④【分析】从命题的否定入手．【详解】命题：“非空集合M 的元素都是集合P 的元素”是假命题，则命题：“非空集合M 的元素不都是集合P 的元素”是真命题，说明集合M 中至少有一个元素不属于集合P ，或者M 中就没有集合P 中的元素，因此②③错误，①④正确．故答案为①④．本题考查真假命题的理解，对一个假命题，可从反面入手，即它的否定为真命题入手，理解起来较方便．6.一个袋中装有5个球，编号为1，2，3，4，5，从中任取3个，用X 表示取出的3个球中最大编号，则()E X =______．【正确答案】4.5【分析】求出X 可能取值和概率，再根据()E X 公式进行计算即可.【详解】从中任取3个球，共有()123，，，()124，，，()125，，，()134，，，()135，，，()145，，，()234，，，()235，，，()245，，，()345，，10中情况，所以X 可能取值为345，，，()1310P X ==，()3410==P X ，()635105===P X ，所以()1339345101052E X =⨯+⨯+⨯=.故答案为.4.57.函数tan()42y x ππ=-的部分图象如图所示，则()OA OB AB +⋅= ____.【正确答案】6【详解】试题分析：由图可知(2,0)A ，(3,1)B ，∴()(5,1)(1,1)6OA OB AB +⋅=⋅=.考点：正切型函数的图象与平面向量的数量积运算.【方法点睛】本题主要考查了正切型函数的图象与平面向量的数量积运算，属于中档题.本题解答的关键观察图象发现,A B 分别是函数tan(42y x ππ=-y 轴右侧的第一个零点和函数值为1的点，即可求得,A B 的坐标，进而求得向量(),OA OB AB +的坐标，根据平面向量数量积的坐标运算即可求得答案.8.如果一个球的外切圆锥的高是这个球半径的3倍，那么圆锥侧面积和球的表面积的比值为______．【正确答案】32【分析】设球的半径为r ，则圆锥的高为3r ，取圆锥的轴截面ABC ，其中A 为圆锥的顶点，设球心为O ，作出图形，分析可知ABC 为等边三角形，求出AB ，利用圆锥的侧面积公式以及球体的表面积公式可求得结果.【详解】设球的半径为r ，则圆锥的高为3r ，取圆锥的轴截面ABC ，其中A 为圆锥的顶点，设球心为O，如下图所示：设圆O 分别切AB 、AC 于点E 、D ，则D 为BC 的中点，由题意可得OD OE r ==，3AD r =，则322AO AD OD r r r OE =-=-==，又因为OE AB ⊥，所以，π6BAD ∠=，同理可得π6CAD ∠=，所以，π3BAC ∠=，又因为AB AC =，故ABC为等边三角形，故πsin 32AD AB ===，所以，圆锥的侧面积为2ππ6πAB BD r ⨯⨯=⨯=，因此，圆锥侧面积和球的表面积的比值为226π34π2r r =.故答案为.329.已知某产品的一类部件由供应商A 和B 提供，占比分别为110和910，供应商A 提供的该部件的良品率为910，供应商B 提供的该部件的良品率为710．若发现某件部件不是良品，那么这个部件来自供应商B 的概率为______（用分数作答）【正确答案】2728【分析】利用全概率公式，条件概率公式求解即可.【详解】设“某件部件不是良品”为事件A ，“这个部件来自供应商B ”为事件B ，()11932810101010100P A =⨯+⨯= ，()93271010100P AB =⨯=，()()()2728P AB P B A P A ∴==.故272810.已知()()πsin 04f x x ωω⎛⎫=+> ⎪⎝⎭，函数()y f x =，x ∈R 的最小正周期为π，将()y f x =的图像向左平移π02ϕϕ⎛⎫<< ⎪⎝⎭个单位长度，所得图像关于y 轴对称，则ϕ的值是______．【正确答案】π8##1π8【分析】由周期求出ω，即可求出()f x 的解析式，再根据三角函数的变换规则得到平移后的解析式，最后根据对称性得到ϕ的值.【详解】 ()()πsin 04f x x ωω⎛⎫=+> ⎪⎝⎭，函数()y f x =的最小正周期为2ππT ω==，2ω∴=，π()sin 24f x x ⎛⎫=+ ⎪⎝⎭．将()y f x =的图像向左平移ϕ个单位长度，可得πsin 224y x ϕ⎛⎫=++ ⎪⎝⎭的图像，根据所得图像关于y 轴对称，可得ππ2π42k ϕ+=+，Z k ∈，解得ππ28k ϕ=+，Z k ∈，又π02ϕ<<，则令0k =，可得ϕ的值为π8．故π8．11.如图，椭圆的中心在原点，长轴1AA 在x 轴上．以A 、1A 为焦点的双曲线交椭圆于C 、D 、1D 、1C 四点，且112CD AA =．椭圆的一条弦AC 交双曲线于E ，设AE EC λ=，当2334λ≤≤时，双曲线的离心率的取值范围为______．710e ≤≤【分析】由题意设()()1,0,,0A c A c -，则可设,,,22c c D h C h ⎛⎫⎛⎫-⎪ ⎪⎝⎭⎝⎭，根据向量的共线求得E 点坐标，代入双曲线的方程22221x y a b-=，结合离心率化简可得2221e e λλ+=-，求出λ的表达式，结合条件可列不等式，即可求得答案.【详解】设()()1,0,,0A c A c -，则设,,,22c c D h C h ⎛⎫⎛⎫- ⎪ ⎪⎝⎭⎝⎭，(其中c 为双曲线的半焦距，h 为C .D 到x 轴的距离)，AE EC λ=，则AE EC λ∴= ，即(,)()2,E E E E x c y h x cy λ--+=，()()˙22,1211E E c c c y h x λλλλλλ-+-∴===+++，即E 点坐标为()()2,211c h λλλλ⎛⎫- ⎪ ⎪++⎝⎭，设双曲线的方程为22221x y a b -=，将c a e =代入方程，得222221e x y c b-=①，将(,)2c C h ，E ()()2,211c h λλλλ⎛⎫- ⎪ ⎪++⎝⎭代入①式，整理得2˙2222222()121,(1441e h e h b b λλλλ--=-+=+，消去22h b ，得2221e e λλ+=-，所以22213122e e e λ-==-++，由于2334λ≤≤.所以22331324e ≤-≤+，故2710,710e e ≤≤≤≤710e ≤≤12.将关于x 的方程()2sin 2π1x t +=（t 为实常数，01t <<）在区间[)0,∞+上的解从小到大依次记为12,,,,n x x x ，设数列{}n x 的前n 项和为n T ，若20100πT ≤，则t 的取值范围是______．【正确答案】1150,,626⎛⎤⎡⎤⋃ ⎥⎢⎥⎝⎦⎣⎦【分析】先根据三角函数的周期性得出12,x x 满足的关系，然后再根据12,x x 的对称性可得结果.【详解】由()2sin 2π1x t +=得()1sin 2π2x t +=，则方程()2sin 2π1x t +=的解即为函数()sin 2πy x t =+图象与直线12y =交点的横坐标，因为函数()sin 2πy x t =+的周期为πT =，所以135,,x x x 是以x 1为首项，π为公差的等差数列，246,,,x x x 是以x 2为首项，π为公差的等差数列，所以201234201210()90π100πT x x x x x x x =+++++=++≤ ，所以12πx x +≤，令π2π=π()2x t k k ++∈Z 得πππ=242k t x +-，因为[)0,x ∈+∞，所以[)2ππ,x t t +∈+∞，由函数()sin 2πy x t =+图象的对称性知，x 1与2x 对应的点关于函数()sin 2πy x t =+图象的某条对称轴对称，因为01t <<，所以当π0π6t <≤，即106t <≤时，可知x 1与2x 对应的点关于直线ππ=42t x -对称，此时满足12πx x +≤成立；当π5ππ66t <≤，即1566t <≤时，可知x 1与2x 对应的点关于直线3ππ=42t x -对称，此时由123πππ2x x t +=-≤得12t ≥，所以1526t ≤≤；当5πππ6t <<，即516t <<时，可知x 1与2x 对应的点关于直线5ππ=42t x -对称，此时不满足12πx x +≤；综上，106t <≤或1526t ≤≤.故答案为.1150,,626⎛⎤⎡⎤⋃ ⎥⎢⎥⎝⎦⎣⎦思路点睛：涉及同一函数的不同自变量值对应函数值相等问题，可以转化为直线与函数图象交点横坐标问题，结合函数图象性质求解.二、选择题（本大题共有4题，满分18分，第13，14题每题4分，第15，16题每题5分）13.设a ∈R ，则“a ＝1”是“直线l 1：ax ＋2y －1＝0与直线l 2：x ＋(a ＋1)y ＋4＝0平行”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【正确答案】A【详解】试题分析：运用两直线平行的充要条件得出l 1与l 2平行时a 的值，而后运用充分必要条件的知识来解决即可．解：∵当a=1时，直线l 1：x+2y ﹣1=0与直线l 2：x+2y+4=0，两条直线的斜率都是﹣，截距不相等，得到两条直线平行，故前者是后者的充分条件，∵当两条直线平行时，得到，解得a=﹣2，a=1，∴后者不能推出前者，∴前者是后者的充分不必要条件．故选A ．考点：必要条件、充分条件与充要条件的判断；直线的一般式方程与直线的平行关系．14.已知平面α，β，直线l ，若αβ，l αβ⋂=，则A.垂直于平面β的平面一定平行于平面αB.垂直于直线l 的直线一定垂直于平面αC.垂直于平面β的平面一定平行于直线lD.垂直于直线l 的平面一定与平面α,β都垂直【正确答案】D【详解】选D.由α⊥β，α∩β＝l ，知：垂直于平面β的平面与平面α平行或相交，故A 不正确；垂直于直线l 的直线若在平面β内，则一定垂直于平面α，否则不一定，故B 不正确；垂直于平面β的平面与l 的关系有l ⊂β，l ∥β，l 与β相交，故C 不正确；由平面垂直的判定定理知：垂直于直线l 的平面一定与平面α，β都垂直，故D 正确．15.已知抛物线()220y px p =>上一点()()1,0M m m >到其焦点的距离为5，双曲线2221xy a-=的左顶点为A ，若双曲线的一条渐近线与直线AM 平行，则实数a 的值为（）A.13B.14C.19D.12【正确答案】A 【分析】由152p+=得抛物线方程，M 在抛物线上求得M 坐标，再根据双曲线一条渐近线与直线AM 平行可得答案.【详解】根据题意，抛物线22(0)y px p =>上一点(1,)(0)M m m >到其焦点的距离为5，则点M 到抛物线的准线2px =-的距离也为5，即152p +=，解得8p =，所以抛物线的方程为216y x =，则216m =，所以4m =，即M 的坐标为14（，），又双曲线2221x y a-=的左顶点(),0A a -，一条渐近线为1y x a =，而41AM k a =+，由双曲线的一条渐近线与直线AM 平行，则有411a a =+，解得13a =.故选：A16.已知函数()y f x =是定义域在R 上的奇函数，且当0x >时，()()()230.02f x x x =--+，则关于()y f x =在R 上零点的说法正确的是（）A.有4个零点，其中只有一个零点在()3,2--内B.有4个零点，其中只有一个零点在()3,2--内，两个在()2,3内C.有5个零点，都不在()0,2内D.有5个零点，其中只有一个零点在()0,2内，一个在()3,+∞【正确答案】C【分析】解法一：先研究0x >时，零点的情况，根据()()23y x x =--零点的情况，以及函数图象的平移，即可得出0x >时零点的个数.然后根据奇函数的对称性以及特性，即可得出答案；解法二：求解方程()0f x =，也可以得出0x >时零点的个数.然后根据奇函数的对称性以及特性，即可得出答案.【详解】解法一：根据对称性可以分三种情况研究(1)0x >的情况，()f x 是把抛物线()()23y x x =--与x 轴交点为()()2,0,3,0向上平移了0.02，则与x 轴交点变至()2,3之间了，所以在()2,3之间有两个零点；(2)当0x <时，()()()230.02f x x x =-++-，根据对称性()3,2--之间也有两个零点(3)()f x 是定义在R 上的奇函数，故()00f =，所以有五个零点.解法二：(1)直接解方程()()230.020x x --+=的两根也可以得两根为52x =，都在()2,3之间；(2)当0x <时，()()()230.02f x x x =-++-，根据对称性()3,2--之间也有两个零点(3)()f x 是定义在R 上的奇函数，故()00f =，所以有五个零点.故选：C.方法点睛：先求出0x >时，零点的情况.然后根据奇函数的性质，即可得出答案.三、解答题（本大题共有5题，满分78分）解答下列各题必须在答题纸的相应位置写出必要的步骤17.2020年全面建成小康社会取得伟大历史成就，决战脱贫攻坚取得决定性胜利．某市积极探索区域特色经济，引导商家利用多媒体的优势，对本地特产进行广告宣传，取得了社会效益和经济效益的双丰收，某商家统计了7个月的月广告投入x （单位：万元）与月销量y （单位：万件）的数据如表所示：月广告投入x /万元1234567月销量y /万件28323545495260（1）已知可用线性回归模型拟合y 与x 的关系，请用相关系数加以说明，并求y 关于x 的线性回归方程；（2）根据（1）的结论，预计月广告投入大于多少万元时，月销量能突破70万件．（本题结果均按四舍五入精确到小数点后两位）【正确答案】（1）0.99r =，线性相关程度相当高；75151ˆ147yx =+.（2）当月公告投入大于9.04万元时，月销售量能突破70万件.【分析】（1）利用相关系数的公式求得r 的值，得出相关性相当高，再求得ˆb和ˆa 的值，即可求得回归直线的方程；（2）结合（1）中的回归方程，根据题意列出不等式，即可求解.【小问1详解】解：由表格中的数据，可得1(1234567)47x =⨯++++++=，1(28323545495270)437y =⨯++++++=，77722111()28,()820,()()150i i i i i i x x y y x x y y ===-=-=--=∑∑∑，可相关系数为7()0.99i x x y y r --==∑，所以y 与x 的线性相关程度相当高，从而用线性回归模型能够很好地拟合y 与x 的关系，又由71721()()7514(i i i i x x y y r x x ==--==-∑∑，可得75151ˆˆ434147a y bx =-=-⨯=，所以y 关于x 的线性回归方程为75151ˆ147y x =+.【小问2详解】解：要使得月销售量突破70万件，则7515170147x +>，解得2269.0425x >≈，所以当月公告投入大于9.04万元时，月销售量能突破70万件.18.如图，在四棱锥P ABCD -中，底面ABCD 是平行四边形，90,ACB PA ∠=⊥平面,1,ABCD PA BC AB F ===是BC 的中点.（1）求证:DA ⊥平面PAC ；（2）试在线段PD 上确定一点G ,使//CG 平面PAF ,并求三棱锥A CDG -的体积.【正确答案】（1）证明见解析；（2）112.【分析】（1）因为四边形ABCD 是平行四边形，所以90ACB DAC ∠=∠= ，所以DA AC ⊥，因为PA ⊥平面ABCD ，则,PA DA ⊥又AC PA A ⋂=，故DA ⊥平面PAC .（2）取PD 的中点为G ，构造平行四边形，可证得//CG 平面PAF .此时，高为PA 的一半，所以体积为1111111332212A CDG G ACD ACD V V S h --∆∴==⋅⋅=⨯⨯⨯⨯=.【小问1详解】因为四边形ABCD 是平行四边形，90,,ACB DAC DA AC PA ∴∠=∠=∴⊥⊥ 平面ABCD ,DA ⊂平面ABCD ，,PA DA ∴⊥又,AC PA A DA =∴⊥ 平面PAC ，【小问2详解】设PD 的中点为G ，连接,AG CG ，在平面PAD 内作GH PA ⊥于点H ,则//GH AD ，且12GH AD =,由已知可得////FC AD GH ,且12FC AD GH ==,连接FH ，则四边形FCGH 为平行四边形，//,GC FH FH ∴⊂ 平面,PAF CG ⊄平面PAF ,//CG ∴平面PAF ,G ∴为PD 的中点时,//CG 平面PAF ,设S 为AD 的中点,连接GS ,则//GS PA ,且11,22GS PA PA ==⊥ 平面ABCD ,GS ∴⊥平面ABCD ,11111··11332212A CDG G ACD ACD V V S GS --∴===⨯⨯⨯⨯= .19.甲、乙两地相距1004千米，汽车从甲地匀速驶向乙地，速度不得超过120千米/小时，已知汽车每小时的运输成本（以1元为单位）由可变部分和固定部分组成：可变部分与速度v （千米/小时）的立方成正比，比例系数为2，固定部分为a 元()0a >．（1）把全部运输成本y 元表示为速度v （千米/小时）的函数，并指出这个函数的定义域；（2）为了使全部运输成本最小，汽车应以多大速度行驶？【正确答案】（1）(]()2100420,120a y v v v ⎛⎫=+∈⎪⎝⎭（2）答案见解析【分析】（1）求出汽车从甲地匀速行驶到乙地所用时间，根据货车每小时的运输成本可变部分和固定部分组成，可求得全程运输成本以及函数的定义域；（2）对210042a y v v ⎛⎫=+ ⎪⎝⎭求导，分两种情况讨论单调性，从而可求得最小成本时对应的速度.【小问1详解】由题意得，每小时运输成本为()32a v +,全程行驶时间为1004v 小时，所以全部运输成本(]()3210042001004(2),12a y v v v a v v ⎛⎫+⎪=∈+ ⎝=⎭；【小问2详解】由（1）知210042a y v v ⎛⎫=+ ⎪⎝⎭，求导得3224100441004a v a y v v v -⎛⎫'=-+=⨯ ⎪⎝⎭，令30,40y v a '=-=，解得v =，120<，即304120a <<⨯时，0v <<，200,1042a y v y v ⎛⎫=+ ⎪⎝<⎭'递减；120v <≤，200,1042a y v y v ⎛⎫=+ ⎪⎝>⎭'递增，此时，当v =，y 有最小值；120≥，即34120a ≥⨯时，0120v <≤，200,1042a y v y v ⎛⎫=+ ⎪⎝<⎭'递减；此时，当120v =，y 有最小值.综上，为了使全部运输成本最小，当304120a <<⨯时，汽车应以v =千米/小时行驶；当34120a ≥⨯时，汽车应以120v =千米/小时行驶.20.已知A B 、是平面内的两个定点，且8AB =，动点M 到A 点的距离是10，线段MB 的垂直平分线l 交MA 于点P ，若以AB 所在直线为x 轴，AB 的中垂线为y 轴建立直角坐标系.（1）试求P 点的轨迹C 的方程;（2）直线()40R mx y m m --=∈与点P 所在曲线C 交于弦EF ，当m 变化时，试求AEF △的面积的最大值.【正确答案】（1）221259x y +=（2）15【分析】（1）根据几何关系将距离转化为10PA PB +=，结合椭圆定义即可求解；（2）先判断直线过定点且斜率不能为0，则三角形的底为定值，即求三角形的高12y y -的最大值，联立直线与椭圆方程，将斜率转化为三角形式，结合三角公式化简，用基本不等式求解即可.【小问1详解】以AB 为x 轴，AB 中垂线为y 轴，则()()4,0,4,0A B -，由题意得，108PA PB PA PM AB +=+==＞，所以P 点的轨迹是以,A B 为左右焦点，长轴长为10的椭圆，设椭圆的方程为()222210x y a b a b+=>>，焦距为2c ，所以22221028a c a b c =⎧⎪=⎨⎪=+⎩，解得534a b c =⎧⎪=⎨⎪=⎩，所以P 点的轨迹C 的方程为221259x y +=【小问2详解】由40mx y m --=得()4y m x =-过定点()4,0B ，显然0m ≠，联立()224,1259y m x x y ⎧=-⎪⎨+=⎪⎩得2297225810,Δ0y y m m ⎛⎫++-=> ⎪⎝⎭恒成立.所以12227272925925m m y y m m +=-=-++，212228181925259m y y m m =-=-++，所以12y y -===因为m 为直线斜率，所以令tan ,tan 0,m θθ=≠所以22122290tan 90tan 125tan 925tan 9sin y y θθθθθ-==⋅++2222290sin 190sin 19015.99cos 25sin sin 916sin sin 416sin sin θθθθθθθθθ=⋅=⋅=≤=+++当且仅当916sin ,sin θθ=即3sin ,4θ=时1215,4max y y -=()115815.24AEF max S =⨯⨯=△思路点睛：圆锥曲线的面积最值问题多采用直线与圆锥曲线联立方程组，运用韦达定理结合基本不等式计算的方法，本题为简化计算，还可以采用三角换元，将直线斜率与三角函数巧妙联系从而更快求解。
电路分析模拟试题3套及答案PDF.pdf
V。
3．含 US 和 IS 两直流电源的线性非时变电阻电路，若 IS 单独作用时, R 上的电流为 I′，
当 US 单独作用时，R 上的电流为 I"，（I′与 I"
参考方向相同），则当 US 和 IS 共同作用时，R 上的功率应为
。
4．若电阻上电压 u 与电流 i 为非关联参考方向，则电导 G 的表达式
1
书山有路
*七． 含空心变压器正弦稳态电路如图，uS(t)=10 2 cos ( 5t + 15°)V,
求电流i 1(t), i 2(t)。(15 分)
电路分析 试题（Ⅱ）
一．单项选
D．10∠180°V
二. 填空 （每题 1 分，共 10 分）
1．电路的两类约束是
。
2．一只 100Ω，1w 的电阻器，使用时电阻上的电压不得超过
解得： I1 ＝ 1A
I2 ＝ －2A
6
书山有
P4
=
(I1
− I2)2 4
=
(1+ 2)2 4
=
9W 4
六 ．解： t < 0 , u C(0-) = - 2V
t > 0 , u C (0+) = u C (0-) = -2V
u C (∞) = 10 – 2 = 8V τ= (1 + 1) 0.25 = 0.5 S
= 1A
电压源单独作用
I3
=
−
6
24 + 3//
6
=
−3A
I2
=
I3
6
6 +
3
=
−3
2 3
=
−2 A
I1 ＝－ I2 ＝2A
2024届山东省济南市东南片区中考英语仿真模拟试题(一模)含答案
2024届山东省济南市东南片区中考英语仿真模拟试题（一模）本试题分选择题部分和非选择题部分，共10页，满分为150分，考试用时120分钟。
答题前，请考生务必将自己的姓名、座号和准考证号填写在答题卡上，并同时将考点、姓名、准考证号和座号填写在试卷规定的位置。
答题时，选择题部分每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑；如需改动，用橡皮擦干净后，再选涂其他答案标号。
非选择题部分，用0.5毫米黑色签字笔在答题卡上题号所提示的答题区域作答。
直接在试题上作答无效。
考试结束后，将本试题和答题卡一并交回。
I．听力测试（30分）A)听录音，从每组句子中选出一个你所听到的句子。
每个句子听一遍。
1. A. Let’s make a card. B. Take a seat, please. C. Have a good time.2. A. We like talk shows. B. My friend is very tall. C. I want to be a doctor.3. A. Do you like strawberries? B. Is she drinking coffee? C. Does he often exercise?4. A.He isn’t watching TV. B. We shouldn’t eat here. C. I can’t play soccer.5. A. How old is your brother? B. When is your birthday? C. What is your last name?B) 在录音中，你将听到五段对话，每段对话后有一个小题，从每小题A、B、C 中选出能回答所给问题的正确答案。
每段对话听两遍。
6. Where is the park?A. It’s next to the library.B. It’s across from the bank.C. It’s behind the bookstore.7. What does the man prefer to drink?A. Tea.B. Milk.C. Juice.8. How did the man go to work yesterday?A. By bus.B. By bike.C. By subway.9. What does Helen look like?A. She has black hair.B. She has short hair.C. She has curly hair.10. Where probably are the speakers?A. In a restaurant.B. In a post office.C. In a shop.C)在录音中，你将听到一段对话，对话后有五个小题，从每小题A、B、C 中选出能回答所给问题的正确答案。
2021--2022学年度下期末学业质量检测七年级数学模拟试题参考答案
2021-2022学年度下期期末学业质量监测七年级模拟数学试题参考答案A 卷一 选择题（每小题3分，共30分）下列各小题给出的四个选项中，只有一个符合题目要题号12345 6 7 8 9 10 答案 D B C C BCDBAB11. 128°； 12.25; 13 . 152y x =+ ; 14. 12. 三．解答题（共54分）15．（本题满分12分，每个小题6分）(1)=-1+4-3+1--------------4 =1-------------------6解：原式分分422(2)=+4(-4)--------------3 =-------------------------56x x x y xy x x x x ÷−−−−−−−−−−−−−323232解：原式-分--分 =-分16．（本题满分8分）22222=4-------------3 =-------------------------4(1)240(1)024=051---------------------1=a ab b a ab a b a ab b a b a b a b a −++−−++=∴−=+−−−−−−−−−−−∴==⨯2222解：原式-4+4分-3分且分且=-26分当，=-2时，原式（-2）-3（----------=---------------⨯2）17分108分17．（本题满分8分）（1）转动转盘，转出的数字大于5的概率是12;-------2分 （2）可用列举法，列表法，画树状图等方法只要合理就行得出3,6,33,6,43,6,5（）；（）；（）；（3,6,6）；（3,6,7）；（3,6,9）.6种等可能性--------------------------5分 p(这三条线段能构成三角形)=42=63----------------------------7分；p(这三条线段能构成等腰三角形)=16-------------------------8分 18.（本题满分8分） 11()3245()AC DFACO DFO ACO DFO ACO DFO AOC DOF OA OD ACO DFO AAS ACO DFO OF OC BF CEBF OF OC CE BO EO ABO DEO BO EO AOB DOE OA OD ABO DEO SAS ∴∠=∠−−−−−∆∠=∠⎧⎪∠=∠⎨⎪=⎩∴∆≅∆−−−−−∆≅∆∴=−−−−−=∴+=+=−−−−−∆=⎧⎪∠=∠⎨⎪=⎩∴∆≅∆（）证明：分在和△中分（）证明：分即分在和△中7−−−−−∴∠∠∴分B=EAB DE-----------8分注意，其它证明方法参照给分 19.（本题满分8分）（1）根据题意，填写下表：(每空1分，共4分）游泳次数 10 15 20 … x 方式一的总费用（元） 320 … 120+10x 方式二的总费用（元） 300 … 15x （2）当120+10x =300时，x=18;当15x=300时，x=20;18<20所以方式2的游泳的次数比 较多.-----------------6分（3）当x=40时，120+10x=520;当x=40时，15x=600;520<600.又10<15.所以张老师选择方式1合算.-----------------8分 20．（本小题满分10分）13BE BA BC BF BEC BAF ∠∴∠∠∆∆=⎧⎪∠∠⎨⎪=⎩∴∆≅∆∴∠=∠−−−−（）证明：BE 平分ABC CBE=ABF------1分在CBE 和FBA 中CBE=ABF CBE FBA(ASA)分（2）△AFC 是等腰三角形。
河南省信阳市2024年中考语文模拟试题及答案
河南省信阳市2024年中考语文模拟试题及答案阅卷人一、积累与运用；班级拟召开“致敬英雄”主题班会，以下是语文老师根据同学们搜集的部分材料拟出的几道“积累与运用”题目，请完成。
（共22分）得分1．阅读下面语段，回答问题。
9月30日是烈士纪念日，人们都在miǎn①（湎缅）怀先烈，致敬英雄。
烈士的功勋彪炳史册，英雄的精神永垂不朽！我们永远铭记，他们为拯救民族危亡捐躯，用鲜血染红旗帜，用生命照亮来路。
但是我们也要注意，近年来dǐ②（诋砥）毁英烈形象的丑恶行径时有出现，最有代表性的是鼓吹历史虚无主义的错误思潮。
一些别有用心之人，打着“解密真相”“还原历史”的幌子，编造谣言、戏谑恶搞甚至恶意中伤，丑化历史、污蔑英雄，产生了恶劣影响。
（1）依次给语段中加点的字注音，全都正确的一项是（）A．zhěng zhòng B．chéng zhōngC．chéng zhòng D．zhěng zhōng（2）语段中两个横线处应分别选用哪个字？请工整地书写。
①怀②毁2．古诗文默写。
华夏儿女，英雄辈出。
《观沧海》中，“日月之行，若出其中。
①，②”形象地展现了曹操统一中国的远大抱负；《南乡子·登京口北固亭有怀》中，“③，④”生动地写出了孙权叱咤纵横的英雄气概；《过零丁洋》中，“⑤，⑥”，文天祥舍生取义的赤诚之心感动着我们；《满江红（小住京华）》中，“⑦，⑧”，秋瑾心系苍生的侠肝义胆激励着我们。
3．依次填入下面一段文字横线处的语句，衔接最恰当．．．的一项是（）《诗经·国风》中，反战的诗篇很多，反对的是统治阶级穷兵黩武、给人民带来深重苦难的不义之战。
____。
____。
____。
____。
这类诗歌，必将以它特有的光辉、巨大的魅力，照耀诗坛，教育和鼓舞后人。
①每当国难当头之时，人民群众总是表现出一种高度的爱国热忱和英勇献身精神，这正是一个民族不亡的根本②《诗经》中的这类诗篇，真实反映出人民群众在保家卫国时的精神面貌，也标志着爱国精神一开始就进入了我国进步文学创作领域③《诗经·秦风·无衣》正是表现了这种誓死抵御外侮、英勇卫国的精神④至于对抵御外侮、保卫家园的正义战争，人民群众还是竭诚拥护并踊跃参加的A．②④①③B．③②④①C．①③④②D．④①③②4．同学们在整理2023年我国重大科技成果时，纷纷为我国科技发展成就点赞，为广大的科技工作者点赞。
德语专八模拟试题pdf
德语专八模拟试题pdf一、听力理解1. 短对话理解- 听下列对话，从A、B、C三个选项中选择正确答案。
- 每段对话仅播放一遍，之后将给出15秒的作答时间。
2. 长对话理解- 听下列长对话，回答相关问题。
- 每段对话将播放两遍，之后将给出30秒的作答时间。
3. 新闻听力- 听下列新闻报道，回答相关问题。
- 新闻报道将播放一遍，之后将给出45秒的作答时间。
二、阅读理解1. 快速阅读- 阅读下列短文，从A、B、C三个选项中选择正确答案。
- 每篇文章阅读时间为5分钟。
2. 深度阅读- 阅读下列长文，回答相关问题。
- 每篇文章阅读时间为10分钟。
3. 完形填空- 阅读下列文章，从A、B、C三个选项中选择正确答案填入空格。
- 每篇文章完成时间为8分钟。
三、语法与词汇1. 单项选择- 从A、B、C三个选项中选择正确答案。
- 每题作答时间为30秒。
2. 词汇搭配- 将下列词汇与正确的搭配连线。
- 完成时间为5分钟。
3. 句型转换- 将下列句子转换成指定的句型。
- 每句转换时间为1分钟。
四、写作1. 应用文写作- 根据所给情景，写一封应用文。
- 写作时间为15分钟。
2. 议论文写作- 根据所给话题，写一篇议论文。
- 写作时间为30分钟。
五、翻译1. 德译汉- 将下列德文段落翻译成中文。
- 翻译时间为20分钟。
2. 汉译德- 将下列中文段落翻译成德文。
- 翻译时间为20分钟。
请注意，以上排版及格式要求仅供参考，具体试题内容需根据实际考试要求进行调整。
2024年四川省成都市武侯区九年级下学期中考英语仿真模拟试题(二诊)含答案
2024年四川省成都市武侯区九年级下学期中考英语仿真模拟试题（二诊）注意事项：1. 全卷分A卷和B卷, A 卷满分100分, B 卷满分50分；考试时间120分钟。
2. 考生使用答题卡作答。
3. 在作答前, 考生务必将自己的姓名、考生号和座位号填写在答题卡规定的地方。
考试结束, 监考人员将试卷和答题卡一并收回。
4. 选择题部分请使用2B铅笔填涂；非选择题部分请使用0. 5毫米黑色的签字笔书写, 字体工整、笔迹清楚。
5. 请按照题号在答题卡上各题目对应的答题区域内作答, 超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。
6. 保持答题卡清洁, 不得折叠、污染、破损等。
A 卷( 共1 0 0 分)第一部分听力(共30小题；计30分)一、听句子, 根据所听到的内容选择正确答语。
每小题念两遍。
(共5小题；每小题1分, 计5分)1. A. I'm fine. B. How about you? C. Nice to meet you!2. A. The same to you. B. That's all right. C. Sounds terrible.3. A. Me, too. B. Sorry, I won't. C. Have fun!4. A. Sure, you can. B. Yes, please. C. I'm sorry to hear that.5. A. With pleasure. B. No problem. C. Congratulations!二、听句子, 选择与所听句子内容相符的图片。
每小题念两遍。
(共5小题；每小题1分, 计5分)三、听对话, 根据对话内容及问题选择正确答案。
每小题念两遍。
(共10小题；每小题1分, 计10分)11. A. In the mountains. B. In the park. C. On the farm.12. A. At 6: 30 a. m. B. At 6: 50 a. m. C. At 7: 00 a. m.13. A. Three. B. Four. C. Five.14. A. Their favorite friends and teachers.B. Their favorite subjects and day.C. Their favorite day and Chinese stories.15. A. Once a month. B. Twice a month. C. Three times a month.16. A. A. student. B. A P. E. teacher. C. A school nurse17. A. Fuhe River. B. Nanhe River. C. Shahe River18.19. A. ￥24. B. ￥28. C. ¥32.20. A. The living room is tidy. B. It's OK for Tony to help Linda.C. She disagrees with Tony.四、听短文, 根据短文内容选择正确答案。
第1-3章模拟题(答案版)
1-3章模拟题1、近程无人机活动半径在______（1 分）A．小于15km B．15~50km C．200~800km2、中程无人机活动半径在______（1 分）A. 50-200kmB. 200-800kmC. 大于800km3、按照飞行高度区分，以下属于高空飞行的是______（1 分）A．4500米(含)至9000米(含)B．8000米(含)至12000米(含)C．6000米(含)至12000米(含)4、大型无人机是指______（1 分）A. 空机质量大于5700kg的无人机B. 质量大于5700kg的无人机C. 空机质量大于等于5700kg的无人机5、______航空器平台结构通常包括机翼、机身、尾翼和起落架等。
（1分）A. 单旋翼B.多旋翼C.固定翼6、多旋翼无人机是通过来改变电机的______来改变无人机的转向（1分）A. 转速B. 角度C. 舵面7、目前主流的民用无人机所采用的动力系统通常为活塞式发动机和__________两种。
（1 分）A．火箭发动机 B．涡扇发动机 C．电动机8、无人机燃油箱通气目的之一是______（1 分）A. 通气增大供油流量B. 保证发动机正常供油C. 通气减小供油流量9、活塞发动机系统常采用的增压技术主要是用来______（1 分）A．提高功率B．减少废气量 C．增加转速11、常规布局的飞机，平尾升力对飞机重心的力矩常为使飞机机头的力矩（1 分）A．上仰B．下俯C．偏转12、重心靠前，飞机的纵向安定性（1 分）A．变强B．减弱 C．不受影响13、用下滑有利速度下滑，飞机的（1 分）A．升阻比最大B．升力最大 C．下滑角最大14、使用KV450的电机、供电电池电压为10.0V，该电机的转速为______（1 分）A.450B.4500C.500015、飞机的迎角是______（1 分）A．飞机纵轴与水平面的夹角B.飞机翼弦与水平角的夹角C．飞机翼弦与相对气流的夹角16、大型无人机计算装载重量和重心的方法主要有计算法、图标法和______（1 分）A. 试凑法B. 查表法C. 约取法17、______功能通常包括指挥调度、任务规划、操作控制、显示记录等功能。
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IPC 号是：B64D27/00
CD 难点：表述为***的专利文献，这里的 ***为专利名称，
应限定在标题字段中检索。
多选题(检索题) 在万方数据库中检索 2009-2010 年题名中包含“网络安全”的文献，下列说法正确的是：
学海无涯
检索结果中工业技术学科分类的文献最多 检索结果中大多是期刊论文 检 索 结
利用高级检索途径在 Ebsco 全部库中查找 ISSN: 1873-2933 作者 Lapenna D 发表的文献为：
Serum albumin and biomolecular oxidative damage of human atherosclerotic plaques
Effect of non-genetic factors on paraoxonase 1 activity in patients undergoing hemodialysis.
正、漆亮等人撰写
B 关键：没有指定检索工具，需要选定收录中文期刊的检索工
具进行尝试。
多选题(检索题)
专利名称“可悬挂气球鞭炮串”，以下检索结果正确的是： 申请日：2002-01-08 这 是 一
篇发明专利 这是一篇非职务发明专利 保护期限到 2022 年 1 月
AC 难点：使用专
利名称字段检索
单选题 EBCSO 数据库中检索有关“填充型电磁屏蔽复合材料研究进展”的文献，合理的检索式为
出的相关文献量。本题目不够严谨，无法计算实际的 C，因为不知道两人检出的相关文献间
的交叉情况如何，同学们重点掌握 C 的计算方法就可以了。
多选题(检索题) 关于国际专利分类号（IPC）G10K7/06 下列说法正确的是 部--物理 大类--乐器、声学 小 类--钢琴 大组--具有铃、板、棒或管形状的谐振器 ABD 该题是可以通过中国国家知识 产权局的专利检索界面上提供的 IPC 分类检索（见课件）的功能找到答案的。
是非题
截词符可以用在词中或者词尾
对
单选题
下列检索结果最多的检索式是 key word(s) in title: transgen and food key word(s) in title or
abstract: transgene and food key word(s) in title or abstract:transgen* and food* key word(s)
学海无涯
多选题
小张和小王对同一课题在相同的数据库中进行检索，小张共检出 100 篇文献，其中 80 篇相
关，小王检出 150 篇，其中 120 篇相关，数据库中未检出的相关文献为 60 篇下列说法正确
的是 小王的查全率比小张的高 查全率一样高 小王的查准率比小张的高 查 准 率
一样高
CD 难点：查全率如何计算？根据查全率的公式，C=检出的相关文献量+未检
单选题 在中国国家知识产权局中查找罗氏公司申请的专利，最佳检索式为： 罗氏 发明(?设计?)人：罗氏 专利代理机构：罗氏 代理人：罗氏 使用申请人检索字段
申请(专利权)人： A 关键：应
多选题 EBCSO 数据库中，关于检索式 embedded W2 systems，正确的说法是： embedded 和 systems 之间最多间隔 2 个单词 embedded 和 systems 之间必须间隔 2 个单词 embedded 和 systems 前后顺序可以颠倒 embedded 和 systems 前后顺序不能颠倒 embedded 和 systems 之间最少间隔 2 个单词 AD 参考教材上有关的检索规则。
生产)" "摘要：(""双酚 A"" or 双酚基丙烷 or 二酚基丙烷) and 制备"
C
单选题 判断文献 Standard General Principles for Temperature Limits in the Rating of Electric Equipment and for the Evaluation of Electrical Insulation Page(s): 0_1 Digital Object Identifier : 10.1109/IEEESTD.1986.81591 的类型。 学位论文 研究报告 图书 期刊 标 准 e 含 Standard，Guide，有标准号的等的为标准
Abstract:filled and composite materials and electromagnetic shielding and research "Abstract:filled and ""composite materials"" and ""electromagnetic shield*""" "Abstract:filled and ""composite materials"" and ""electromagnetic shield*"" and research" "Title:filled and ""composite materials"" and ""electromagnetic shield*"" and research" B 关键：不能用 research 作为检索词，要注意同义词和近义词的使用。
B 关键：应根据题目的要求选择正确的检索字段。
单选题
在万方中查找“基于粗糙集的神经网络建模方法研究”的文献，检索结果最多的是： 粗
糙集 神经网络 建模方法 基于粗糙集的神经网络建模方法研究 粗糙集 神经网络 建
模 研究 粗糙集 神经网络 建模
D 关键：方法、研究不能作为检索词，多用单元
词，少用多元词
单选题 " 判 断 文 献 Lis, T;Nowacki, K.OPTIONS OF UTILISING STEELMAKING DUST IN A NON-METALLURGICAL INDUSTRY.METALURGIJA.2012,51(2): 257-260 的文献类型。" 学 位 论 文 报告 图书 期刊 会议论文 D "含 journal，Volume(但不含 ISBN 号),或卷 册次（如：2012,51(2)）"
M=嵌入式系统*触摸屏控制 M=嵌入式系统*触摸屏*控制 M=嵌入式*系统*触摸屏* 控制 M=嵌入式*触摸屏 D
学海无涯
单选题
下列检索结果最多的检索式是 "摘要：""双酚 A"" and 制备" "摘要：(""双酚 A"" or 双酚
基丙烷) and 制备""摘要：(""双酚 A"" or 双酚基丙烷 or 二酚基丙烷) and (制备 or 合成 or
多选题(检索题)
Orlita M 在 2008 年发表的关于“Multilayer Epitaxial Graphene ”主题的论文被 Web of Science
收录的情况，下列说法正确的是： 该 论 文 的 标 题 是 《 Approaching the Dirac Point in
High-Mobility Multilayer Epitaxial Graphene》 该论文被引用频次不少于 80 次 "Potemski, M.
学海无涯
单选题 维普数据库中检索有关“填充型电磁屏蔽复合材料研究进展”的文献，合理的检索式为
R=填充型*电磁屏蔽*复合材料*研究进展 R=填充型*电磁屏蔽*材料 R= 填 充 型 and 电磁屏蔽 and 材料 R=填充型 and 电磁屏蔽 and 复合材料 and 研究进展 R= 填 充 型 电 磁屏蔽*复合材料*(研究+进展) B 关键：注意使用正确的逻辑算符，研究进展等不能作为 检索词
Oxidative stress biomarkers and chromogranin A in uremic patients: effects of dialytic
treatment. Sample evaporation from pierceable cups: still an important source of analytical
单选题 课题“两性聚电解质溶液的结构研究”，最佳检索式为： "ts=""study on the structure
of polyampholyte solution""" "ts=structure and ts=""polyampholyte solution""" ts=structure or ts=polyampholyte solutionts=structure and ts=polyampholyte solution B 关键：多用单 元词，少用多元词
单选题 "判断文献 Proceedings of the 52nd Chemical Sensor Symposium. (Meeting held 9-11 September, 2011 in Niigata Japan). [In: Chem. Sens., 2011; 27(supple. B)].Editoria lsCommittee of Japan Association of Chemicla Sensors,Japan.(2011),142 pp.Publisher: (Denki Kagakkai Kagaku Sensa Kankyukai, Kasuga, Japan) 的文献类型。" 学位论文 研究报告 图书 期 刊