2020年1月31日河南省周口市扶沟县普通高中2020届高三年级下学期开学考试数学(理)试题及答案
河南省周口市扶沟县2020届高三下学期开学考试 政治 Word版含答案
扶沟高中2019－2020学年度下期开学考试高三政治试题全卷满分300分考试时间140分钟第I卷一、选择题(本题共35题，每题4分，共140分。
每小题给出的四个选项中，只有一个是符合题目要求的)。
12.2019年9月1日，美国政府开始对剩余3000亿美元中国输美商品征收25%关税。
作为反制，中国开始对原产于美国的5078个税目，约750亿美元商品，加征10%、5%不等关税(包含在商品价格中)。
不考虑其他因素，下列四幅图中正确描述了中国的反制措施对在中国市场上销售的这些美国产品的影响的是13.深夜，长沙人在吃宵夜，上海人在健身……据调查，目前我国有60%的消费发生在夜间，大型商场每天晚上的销售额占比超过全天的一半。
夜间消费激发了商业活力，“夜经济”在城市GDP中所占比重不断加大。
这体现了①有怎样的生产方式就有怎样的消费方式②消费对生产的调整、升级起着导向作用③居民消费的变化会影响相关产业的发展④“夜经济”为城市经济发展注入新动力A.①②B.①③C.②④D.③④14.重庆将于2019年至2021年底培训10万名企业新型学徒，着力提升劳动者职业技能，促进产业转型发展，并对开展学徒制培训的企业给予4000元/人/年的职业培训补贴。
这一举措的依据在于①财政具有促进资源合理配置的作用②劳动者在生产力发展中起主导作用③劳动者是引领经济发展的第一动力④财政具有促进经济平稳运行的作用A.①②B.①④C.②③D.③④15.2019年8月16日，国家发改委出台《关于多措并举促进城乡居民收入合理增长的行动方案(2019－2020年)》，要求促进农业农村和户籍制度等重点领域改革，稳定工资性收入预期，拓宽财产性收入渠道，切实提高居民收入。
这一行动方案①旨在通过改革涵养推动城乡发展的根本动力②是为了通过初次分配和再分配促进社会公平③既利于提高生产效率又有助于城乡协调发展④有助于居民通过生产要素参与分配增加收入A.①②B.①③C.②④D.③④16.既有住宅加装电梯，是2019年杭州市人大票决的十大民生实事之一。
【精准解析】河南省周口市扶沟县2020届高三下学期开学考试文科综合历史试题
高三文综历史试题
第Ⅰ卷
一、选择题
1.春秋中后期，晋、楚、秦等国相继开始推行县制。晋国县制尤为发达，卿大夫都在各自领
地内设县，委任有军功者为其长官。春秋中后期，县制的推行
A. 冲击了传统政治秩序
B. 废除了贵族世袭特权
C. 强化了君主专制权力
D. 完善了地方行政制度
又延揽儒者数百人做官。不治儒家经书的博士均被废罢，只剩下儒家的“五经博士”。这表
明当时
A. 黄老之学趋向消亡
B. 治国方略选择纯守儒术
C. 儒学受到高度重视
D. 儒学主流地位得以强化
【答案】C
【解析】
【详解】根据材料，汉武帝时期将官学的教学内容和教授经书的博士，限制在儒家一家，结
合所学知识可知，这表明了儒学在官方教育中受到了高度重视，C 选项符合题意。材料强调儒
A. 农村经济得到迅速恢复
B. 农业合作化运动蓬勃开展
C. 国民经济调整成效突出
D. 人民公社化运动正在进行
【答案】B
【解析】
【详解】根据图片和“1954 年”等信息，结合所学知识可知，材料反映的是农民对农业合作
化运动的参与和支持，B 选项符合题意。图片中只有农民劳动的场景，不能得出“经济迅速发
展”的结论，A 选项错误。1954 年是一五计划期间，不是国民经济调整时期，C 选项错误。人
【答案】A
【解析】
【详解】县的长官由卿大夫根据军功委任，对春秋时期的世卿世禄制形成冲击，故选 A 项；
县制的推行并未废除贵族世袭特权，排除 B；春秋时期并未形成君主专制，排除 C 项；完善地
方行政制度与材料主旨不符，排除 D 项。故选 A。
2020届河南省周口市扶沟县高三下学期开学考试文综答案
扶沟高中2019-2020学年度下期开学考试高三文综试题答案地理试题答案1-5 A D C B B 6-10 A C D A A 11. D36. （24分）(1) 初始地形平坦，河流侧蚀明显，形成曲流；(2分)后地壳抬升，河流下蚀强烈，曲流深切。
（2分）(2) 总流量基本不变；流速加快；含沙量减少；流量季节变化减小。
（任答三点得6分）(3) 水量减小，河流自净能力变差，水质恶化（或污染加重）；（2分）河道水文环境变化，生物生存环境改变，部分水生生物死亡；（2分）水域相对封闭，鱼类洄游及物种交流受阻，有些物种消失。
（2分）(4) 水位升高，航道加深；（2分）水面变宽，航道加宽，通航能力增强；（2分）航程和航运时间缩短；（2分）流速平稳，安全性增加。
（2分）37.（22分）(1)原因：河谷西北-东南延伸，有利于夏季东南风的进入。
谷底由西北向东南敞开，即西北高，东南低，受地形抬升，形成地形雨，降水多。
（4分）有利影响：该地为夜间降雨给作物和牧草供给了水分；白天降水少，到达地面的太阳辐射多，光照充足，利于提高农作物产量和质量。
（4分）(2)太阳辐射强，日照时间长；北部山脉阻挡了冷空气南下，谷地热量条件较好；海拔高，气温日较差大，有利于有机物(糖分)的积累；地形平坦开阔；土壤透气性好；灌溉水源充足。
（共8分，每点2分，任答4点得8分）(3）赞同。
①当地自然条件适宜大樱桃的种植；②成熟时间晚，错时上市，经济效益高；③品牌获得国家认可，国家政策支持；④深受消费者青睐，市场需求量大。
⑤(种植大樱桃)可以增加植被覆盖率，改善当地生态环境；不赞同。
交通不便，运输成本高；距离市场远，果实难以保鲜，降低市场竞争力；当地种植技术落后；灾害频发，常出现死树现象；(大樱桃需水量较大)当地降水少，易造成水资源短缺，从而引发其他生态环境问题。
（共6分，每点2分，任答3点得6分）43. 地处低纬度（热带）地区，高温多雨，风化、侵蚀作用强；（4分）植物繁茂，植物根系对建筑物破坏作用强；（2分）蚁虫繁殖快，蛀蚀作用强；（2分）地势低平，易遭洪涝。
河南省周口市扶沟县2020届高三下学期开学考试 文综含答案
扶沟高中2019-2020学年度下期开学考试高三文综试题全卷满分300分考试时间140分钟第Ⅰ卷一、选择题（本题共35题，每题4分，共140分。
每小题给出的四个选项中，只有一个是符合题目要求的）。
中国和美国是世界上最大的提琴市场，巴西红木是制造各种提琴琴弓的重要原料。
巴西红木主要生长在临海的高温暖湿环境，生长极为缓慢，成材大概需要80年，故其原生林面积较小，经济价值高。
右图为巴西区域简图。
据此完成1～3题。
1．巴西红木最可能生长在图中的A．①地 B．②地C．③地 D．④地2．巴西红木成为提琴琴弓原料的主要原因是A．材质稀有B．运输方便C．木质颜色D．木质坚硬3．用巴西红木加工提琴琴弓的企业布局在欧洲的最主要原因是A．临近市场 B．运输成本C．加工技术 D．气候温和右图示意浙江省某区域的聚落和交通线路分布。
该高速公路采用了“沿江不占江、沿山少开山”工程设计原则。
据此完成4～6题。
4．该区域交通线路主要沿A．平原分布 B．河谷分布C．山脊分布 D．鞍部分布5．该高速公路设计原则主要是考虑①降低工程造价②降低航道干扰A．①② B．②③C．③④ D．①④6．与该高速公路相比，图中普通公路A．交通安全隐患大 B．线路里程更短C．居民使用频率低 D．建成年代更晚据考古和文献研究发现，我国桑蚕产业有三大发源地——黄河中下游、长江中下游流域和四川盆地。
早期，长江中下游的桑蚕产业发展成熟度较高；后来，桑蚕文化向北转移，我国桑蚕产业中心落在中原地区；唐安史之乱后，“北桑南移”，江南地区成为新的桑蚕产业中心。
2005年起，广西一跃成为我国桑蚕第一大省区，实现跨越式发展。
据此回答7～8题。
7．安史之乱后，我国桑蚕产业南移的主导因素是A．生产技术B．自然条件C．人口迁移D．经济因素8．广西桑蚕产业在未来要保持跨越式发展势头，可采取①坚持传统“桑基鱼塘”模式②不断扩大桑树种植面积③产业链由缫丝到织绸延伸④对劳动力进行技术培训A．①②B．①④C．②③D．③④我国科学家对青藏高原五道粱地区某研究站点(93°E，35°N，海拔4632m)净初级生产力NPP(指植物在单位时间单位面积上所产生的有机干物质总量)进行气候变化情景模拟研究，发现近五十五年草地年均 NPP呈显著上升趋势。
河南省周口市扶沟县2020届高三下学期开学考试 文科综地理
扶沟高中2019-2020学年度下期开学考试高三文综地理试题全卷满分300 分考试时间140 分钟第Ⅰ卷一、选择题（本题共35 题，每题4 分，共140 分。
每小题给出的四个选项中，只有一个是符合题目要求的）。
中国和美国是世界上最大的提琴市场，巴西红木是制造各种提琴琴弓的重要原料。
巴西红木主要生长在临海的高温暖湿环境，生长极为缓慢，成材大概需要0 80 年，故其原生林面积较小，经济价值高。
右图为巴西区域简图。
据此完成1 ～3 题。
1．巴西红木最可能生长在图中的A．①地B．②地C．③地D．④地2．巴西红木成为提琴琴弓原料的主要原因是A．材质稀有B．运输方便C．木质颜色D．木质坚硬3．用巴西红木加工提琴琴弓的企业布局在欧洲的最主要原因是A．临近市场B．运输成本C．加工技术D．气候温和右图示意浙江省某区域的聚落和交通线路分布。
该高速公路采用了“沿江不占江、沿山少开山”工程设计原则。
据此完成4～6 题。
4．该区域交通线路主要沿A．平原分布B．河谷分布C．山脊分布D．鞍部分布5．该高速公路设计原则主要是考虑①降低工程造价②降低航道干扰③减轻地质灾害的影响④减轻冰冻灾害的影响高三开学考试文综试题第第2 2 页（共6 16 页）A．①②B．②③C．③④D．①④6．与该高速公路相比，图中普通公路A．交通安全隐患大B．线路里程更短C．居民使用频率低D．建成年代更晚据考古和文献研究发现，我国桑蚕产业有三大发源地——黄河中下游、长江中下游流域和四川盆地。
早期，长江中下游的桑蚕产业发展成熟度较高；后来，桑蚕文化向北转移，我国桑蚕产业中心落在中原地区；唐安史之乱后，“北桑南移”，江南地区成为新的桑蚕产业中心。
5 2005 年起，广西一跃成为我国桑蚕第一大省区，实现跨越式发展。
据此回答7 ～8 题。
7．安史之乱后，我国桑蚕产业南移的主导因素是A．生产技术B．自然条件C．人口迁移D．经济因素8．广西桑蚕产业在未来要保持跨越式发展势头，可采取①坚持传统“桑基鱼塘”模式②不断扩大桑树种植面积③产业链由缫丝到织绸延伸④对劳动力进行技术培训A．①②B．①④C．②③D．③④我国科学家对青藏高原五道粱地区某研究站点(93 °E E ，35 °N N ，海拔4632m) 净初级生产力NPP( 指植物在单位时间单位面积上所产生的有机干物质总量) ) 进行气候变化情景模拟研究，发现近五十五年草地年均P NPP 呈显著上升趋势。
河南省周口市扶沟县2020届高三英语下学期开学考试试题
河南省周口市扶沟县2020届高三英语下学期开学考试试题第二部分阅读理解(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A、B、C 和D 四个选项中，选出最佳选项。
AStudent Scholarships5 Strong ScholarshipApplication Deadline: August 20thScholarship Description: The 5 Strong Scholarship Foundation is a team of experienced educators that have over 30 years of experience in helping minority nationality students get into college. We have teamed up to form a foundation that’s going to be devoted to building groups of 5 college ready scholars and placing them on the campuses of Historically Black Colleges and Universities.Contact: Andrew H. Ragland; 770-873-6621$1,000 College JumpStart ScholarshipApplication Deadline: October 8thScholarship Description: The $1,000 College JumpStart Scholarship is a virtue-based competition that is open to 7th-12th graders and college students and non-traditional students. Applicants must be juniors or seniors or adult students.Contact: Adrian Monk; 650-319-8441ACF Andrew Piech Memorial ScholarshipApplication Deadline: July 9thScholarship Description: One or more scholarships are awarded each year to New Mexico graduating high school seniors and continuing college students. Students must go after a degree or certificate from a non-profit public or technical professional institution including community college.Contact: Daniel White; 505-883-6240"Species On The Edge 2.0" Social ScholarshipApplication Deadline: September 19thScholarship Description: Conserve Wildlife Foundation invites high school student from across the state to submit an original social media campaign showing why wildlife is important to protect. The fun and educational contest provides students with the opportunity to show their talent, creativity and love for nature. The students may get scholarships if they perform well.Contact: Stephanie Dalessio; 609-984-602121. What’s the $1,000 College JumpStart Scholarship mainly based on?A. Virtue.B. Certificate.C. Protecting wildlife.D. Helping black students.22. Who can minority nationality students call for help if they want to get a scholarship?A. Andrew H. Ragland.B. Adrian Monk.C. Daniel White.D. Stephanie Dalessio.23. Which of the following is intended for New Mexican students?A. 5 Strong Scholarship.B. $1,000 College JumpStart Scholarship.C. ACF Andrew Piech Memorial Scholarship.D. “Species On The Edge 2.0” Social Scholarship.BA bunch of strangers showed up at the gym in the early morning of the last Sunday of April. A few athletes were already stretching their arms, but most of us could barely focus. As I was burning off last night’s wrong decision—a big meal, I spotted a poster about a gym’s 21-day workout challenge, and I immediately signed up. I always wanted to train for a marathon, so I considered this as my warm-up. Besides, I needed to stop being lazy and this was my chance to make a change.It was easy to promise on paper, but three weeks of recommended exercise routines and diet restrictions wouldn’t be easy. I stuck to working out 30 minutes a day, and I didn’t disturb my normal routine. Instead, I had to be faced with the tough work of being more creative in my spare time, thus breaking some bad habits.Overcoming weaknesses with willpower was my goal for the next part of the journey.But the difficult part about making a challenge is realizing that “wanting” and “doing” are two very different things. Just like a career, you have to physically work for it rather than just wait for it to happen. But that’s hard. Throughout the 21 days, I often told myself that the challenge was meaningless and tried to sabotage myself from exercising. However, finally I overcame that negative thought and kept working out.At the end of the challenge, I learned something even more important: Feeling the results is better than seeing them. I had fewer headaches and more energy, and was simply happier. I even felt a little smarter as I researched which foods were better for my body, and learned how to make healthier meals. I felt a sense of accomplishment, too, because even though I wanted to give up dozens of times, I didn’t.I felt my waist got smaller and my arms got stronger, and I no longer felt guilty after having a piece of cake or a drink.24. What was the author’s wrong decision?A. Going to the gym early.B. Training for a marathon.C. Eating a lot the previous night.D. Stopping being lazy for a change.25. What is paragraph 2 mainly about?A. Some of the author’s bad habits.B. Some ways of the author’s killing his spare time.C. The importance of sticking to the normal daily routine.D. The difficulty of the author’s keeping on with the workout plan.26. What does the underlined word “sabotage” in paragraph 3 probably mean?A. Improve.B. Hear.C. Prevent.D. Distinguish.27. What did the author learn from the workout challenge?A. Eating healthy food is more important than exercising.B. Overcoming a challenge could bring good feelings to him.C. It’s more important to see what he likes than just feel it.D. There was no need to feel guilty about things he disliked to do.CA new study shows that air pollution can cause a huge reduction in our intelligence.The study was a project involving researchers at Peking University in China and Yale University in the United States.The researchers reported that long-term exposure to air pollution can affect a person’s mental abilities in two areas: Language and math.The researchers studied about 25,000 people from across China. Between 2010 and 2014, these Chinese men, women and children were given language and math tests. Then researchers compared the test results with measurements of pollution in the air, namely nitrogen dioxide and sulfur dioxide(二氧化硫).Xi Chen of the Yale School of Public Health led the study. He and his team found that breathing polluted air can reduce a person’s education level by about one year.Chen said that the effect generally is worse for those over 64 years of age, for men and for those with little or no education."The older persons-they are more affected. And we find, quite amazingly, males are more affected than females. And people working outdoors are more affected than people working indoors."He noted that the youngest people in the study were 10 years old, while the oldest was 90 years old. They came from China’s 33 provinces. In his words, the data and facts are convincing and this range of ages and locations across the country provided a real, objective and representative sample.The researchers noted that the effect of air pollution on verbal ability is even more serious as people age, especially among men and the less educated. The researchers also stressed that every country, whether developed, developing or poor, should focus on air pollution or humans will face a bad situation.28. What is the result of the study?A. Females are more affected by air pollution than males.B. Air pollution has a bad effect on people’s intelligence.C. Americans are more affected by air pollution than Chinese.D. People working indoors are actually not affected by air pollution.29. What did Chen say about the study?A. It is doubtful.B. It is extremely unfair.C. It is common and not representative.D. It is relatively objective and persuasive.30. What did the researchers emphasize in the last paragraph?A. The data from the 33 provinces is convincing.B. The whole world should pay attention to air pollution.C. The less educated take more responsibility for air pollution.D. Air pollution’s influence on verbal ability is less serious as people age.31. Where is the text most likely taken from?A. A life diary.B. A guidebook.C. A biography.D. A science magazine.DStories are shared in many ways. They are described in books and magazines. They are read around the campfire at night. They are randomly distributed from stand-alone booths. But what else?To revive(复兴)literature in the era of fast news and smartphone addiction, Short Edition, a French publisher of short-form literature, has set up more than 30 story dispensers(分发机) in the USA in the past years to deliver fiction at the push of a button at restaurants, universities and government offices.Francis Ford Coppola, the film director and winemaker, liked the idea so much that he invested in the company and placed a dispenser at his Café Zoetrope in San Francisco. Last month public libraries in some other cities announced they would be setting them up, too. There is one on the campus at Penn State. A few can be found in downtown West Palm Beach, Fla. And Short Edition plans to announce more, including at the Los Angeles International Airport."Everything old is new again," said Andrew Nurkin, the director of the Free Library of Philadelphia, which is one of the libraries that set up the dispensers. “We want people to be easily exposed to literature. We want to advance literacy among children and inspire their creativity.”Here’s how a dispenser works: It has three buttons on top indicating choices for stories that can be read in one minute, three minutes or five minutes. When a button is pushed, a short story is printed. The stories are free. They are chosenfrom a computer category of more than 100,000 original submissions by writers whose works have been evaluated by Short Edition’s judges, and transmitted over a mobile network. Offerings can be tailored to specific interests, like children’s fiction or romance. Short Edition gets stories for its category by holding writing contests.Short Edition set up its first booth in 2016 and has 150 machines worldwide. “The idea is to make people happy,” said Kristan Leroy, director of Short Edition, “There is too much unhappiness today.”32. What do we know about the stories sent by dispensers?A. They are expensive.B. They are short in form.C. They can be read on smartphones.D. They are mainly taken from magazine literature.33. Where can you find the popularity of story dispensers in America?A. In paragraph 3.B. In paragraph 4.C. In paragraph 5.D. In paragraph6.34. Which is the main purpose of setting up the dispensers according to Andrew Nurkin?A. To make people have access to literature.B. To get rid of people’s smartphone addiction.C. To reduce the financial stress of libraries.D. To advertise the network literature.35. What is the best title for the text?A. Online Reading: a Virtual TourB. Short Edition, a French PublisherC. Everything Old Will Be Popular AgainD. Taste of Literature, at the Push of a Button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。
2020届河南省周口市扶沟县高三下学期开学考试理数答案
3 ，
∵ m 1, 0, 0 是平面 FCB 的一个法向量，
cosn, m
∴
nn mm
1 3
1
2
3 1
1
2
3 4
……10 分
∵ 0 3 ，∴当 0 时， cos 有最小值为 7 ， 7
∴点 M 与点 F 重合时，平面 MAB 与平面 FCB 所成二面角最大，
2
3
3,得ac 4.
....4 分 .....6 分 .....8 分
a c ac( 1 1) 4 3 6.
ac
2
.....10 分
b a2 c2 ac (a c)2 ac 36 4 4 2.
......12 分
18.【解析】（1）设等差数列an 的公差为
19.（Ⅰ）【证明】在梯形 ABCD 中，∵ AB / /CD ,设 AD CD BC 1，
1
又∵ BCD
2 3
,∴
AB
2
,∴
AC 2
AB2
BC 2
2AB BC cos60
3
∴ AB2 AC 2 BC 2 .则 BC AC .
……2 分
∵ CF 平面 ABCD , AC 平面 ABCD ，∴ AC CF , 而 CF BC C ,∴ AC 平面 BCF .∵ EF // AC ,∴ EF 平面 BCF .
3
3
......2 分
0 C ,sin C 0,sin B sin(B ),sin B 1 sin B 3 cos B，
2019-2020学年河南省周口市扶沟高中高三(下)开学语文试卷(有答案解析)
2019-2020学年河南省周口市扶沟高中高三（下）开学语文试卷一、默写（本大题共1小题，共6.0分）1.补写出下列句子中的空缺部分。
《白雪歌送武判官归京》中体现离别时依依不舍的情感，与李白的“孤帆远影碧空尽，唯见长江天际流”意境相似的诗句是：______ ，______ 。
《赤壁赋）中“______ ，______ ”两句，借助具体形象，运用夸张、想象的手法，把凄凉婉转、悲凉幽怨的箫声表现得形象真切，使人如闻其声，凄然泪下。
辛弃疾《水遇乐•京口北固亭怀古》中，作者感叹收复中原、徒成虚愿，于是有了不堪回首之感，这一感慨，因不堪回首的“______ ，______ ”而愈加强烈。
二、诗歌鉴赏（本大题共1小题，共9.0分）2.古代诗歌阅读：阅读下面这首宋诗，完成各题。
自咏示客陆游衰发萧萧老郡丞，洪州又看上元灯。
羞将枉直分寻尺，宁走东西就斗升。
吏进饱谙箝纸尾①，客来苦劝摸床棱②。
归装渐理君知否？笑指庐山古涧藤。
【注】①箝纸尾：典出韩愈《蓝田县丞厅壁记》。
县丞有职无权。
属吏抱来文书，左手挟卷正文，右手指着纸尾，要县丞签署，却不许看公文内容。
②摸床棱：遇事模棱两端。
下列对这首诗的赏析，不正确的一项是______A．首句用白描手法，刻画出了“我”白发稀短的颓唐老态，寄寓着自己壮志难酬的无奈。
B．第二句“又”字写出了岁月流逝人生倏忽的感叹，“上元”交代了诗歌创作的时间。
C．客人苦劝“我”遇事模棱两可假装糊涂，主要表现客人对“我”处世方式的不满。
D．诗人借“箝纸尾”这个典故抒发感情，含蓄深刻，“饱谙”：二字更是意味深长。
诗歌的尾联很有特点，请简要赏析。
三、现代文阅读（本大题共3小题，共36.0分）3.阅读下面的文字，完成下列各题。
一段时间以来，我们试图重新找到中国文化根性，展开从思维方式到价值体系的新论述。
在这样一个回头细看的过程中，传统文学生活中大量新事实被看见，与此同时，学界越来越进入到“史实还原”的阶段--在意识到要注重还原事实、还原历史现场之后，“中国文论”研究越来越多探向历史维度。
河南省周口市扶沟县2020届高三语文下学期开学考试试题不分版本
河南省周口市扶沟县2020届高三语文下学期开学考试试题不分版本河南省周口市扶沟县2020届高三语文下学期开学考试试题一、现代文阅读(36分)(一)论述类文本阅读(此题共3小题，9分)阅读下面的文字，完成1～3题。
一段时间以来，我们试图重新找到中国文化根性，展开从思维方式到价值体系的新论述。
在这样一个回头细看的过程中，传统文学生活中大量新事实被看见，与此同时，学界越来越进入到“史实复原〞的阶段——在意识到要注重复原事实、复原历史现场之后，“中国文论〞研究越来越多探向历史维度。
当下学界已经认识到，在大量新事实充分发现的根底上，需要有一个大的理论综合，超越以往对中国文艺的阐释与解读。
当今时代的中国文论要防止前面几个历史阶段带来的局限，开展出像中国哲学、中国历史那样强大的辐射力和解释力，开展出新的理论论述。
这个新论述就是“中国文论的历史自觉与现代阐释〞。
这一新论述有两个轮子，一是中国文学与艺术自身的新事实与新意义；一是活古化今，在解释当今文艺实践中不断丰富提炼出新的话语。
中国文论研究在“回头看〞过程中温故知新，不断更新文艺研究眼光，新眼光又使得中国文学与艺术自身的新事实被看见。
其中最显著的是文学边界的扩大、文学功能的再发现。
譬如，不同于西方文学对虚构性的强调，在中国文学中，非虚构文学占据尤为重要的地位。
近年来无论是诗人生平与作品关系研究，还是诗与历史事件、诗与日常经验研究的大量新事实，都已充分证明这一点。
在以诗文为主流的中国古代文学中，文学写作乃是写亲身闻见、亲身经历的现实世界情景及由此而来的真情实感，不同于现代以来以“积极虚构〞为主流的文学观念。
非虚构与虚构同时存在，延伸文学边界，扩展文学功能，使得文学不仅是少数人秀异的语文游戏与奇妙梦想，而且跟普通人日常生活息息相关，可谓一草一木总关情。
我们正在进入一个重新认识中国文学艺术的时代，这与中国文化整体复苏和社会普遍文化自觉是相适应的。
中国文论是否具有强大解释力和生命力，还要看它能否有效阐释当今文艺实践。
河南省周口市扶沟县2020届高三下学期开学考试 英语 含解析
扶沟高中2019－2020 学年度下期开学考试高三英语试卷第二部分阅读理解(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A、B、C 和D 四个选项中，选出最佳选项。
AStudent Scholarships5 Strong ScholarshipApplication Deadline: August 20thScholarship Description: The 5 Strong Scholarship Foundation is a team of experienced educators that have over 30 years of experience in helping minority nationality students get into college. We have teamed up to form a foundation that’s going to be devoted to building groups of 5 college ready scholars and placing them on the campuses of Historically Black Colleges and Universities.Contact: Andrew H. Ragland; 770-873-6621$1,000 College JumpStart ScholarshipApplication Deadline: October 8thScholarship Description: The $1,000 College JumpStart Scholarship is a virtue-based competition that is open to 7th-12th graders and college students and non-traditional students. Applicants must be juniors or seniors or adult students.Contact: Adrian Monk; 650-319-8441ACF Andrew Piech Memorial ScholarshipApplication Deadline: July 9thScholarship Description: One or more scholarships are awarded each year to New Mexico graduating high school seniors and continuing college students. Students must go after a degree or certificate from a non-profit public or technical professional institution including community college.Contact: Daniel White; 505-883-6240"Species On The Edge 2.0" Social ScholarshipApplication Deadline: September 19thScholarship Description: Conserve Wildlife Foundation invites high school student from across the state to submit an original social media campaign showing why wildlife is important to protect. The fun and educational contest provides students with the opportunity to show their talent, creativity and love for nature. The students may get scholarships if they perform well.Contact: Stephanie Dalessio; 609-984-602121. What’s the $1,000 College JumpStart Scholarship mainly based on?A. Virtue.B. Certificate.C. Protecting wildlife.D. Helping black students.22. Who can minority nationality students call for help if they want to get a scholarship?A. Andrew H. Ragland.B. Adrian Monk.C. Daniel White.D. Stephanie Dalessio.23. Which of the following is intended for New Mexican students?A. 5 Strong Scholarship.B. $1,000 College JumpStart Scholarship.C. ACF Andrew Piech Memorial Scholarship.D. “Species On The Edge 2.0” Social Scholarship.BA bunch of strangers showed up at the gym in the early morning of the last Sunday of April. A few athletes were already stretching their arms, but most of us could barely focus. As I was burning off last night’s wrong decision—a big meal, I spotted a poster about a gym’s 21-day workout challenge, and I immediately signed up. I always wanted to train for a marathon, so I considered this as my warm-up. Besides, I needed to stop being lazy and this was my chance to make a change.It was easy to promise on paper, but three weeks of recommended exercise routines and diet restrictions wouldn’t be easy. I stuck to working out 30 minutes a day, and I didn’t disturb my normal routine. Instead, I had to be faced with the tough work of being more creative in my spare time, thus breaking some bad habits.Overcoming weaknesses with willpower was my goal for the next part of the journey. But the difficult part about making a challenge is realizing that “wanting” and “doing” are two very different things. Just like a career, you have to physically work for it rather than just wait for it to happen. But that’s hard. Throughout the 21 days, I often told myself that the challenge was meaningless and tried to sabotage myself from exercising. However, finally I overcame that negative thought and keptworking out.At the end of the challenge, I learned something even more important: Feeling the results is better than seeing them. I had fewer headaches and more energy, and was simply happier. I even felt a little smarter as I researched which foods were better for my body, and learned how to make healthier meals. I felt a sense of accomplishment, too, because even though I wanted to give up dozens of times, I didn’t. I felt my waist got smaller and my arms got stronger, and I no longer felt guilty after having a piece of cake or a drink.24. What was the author’s wrong decision?A. Going to the gym early.B. Training for a marathon.C. Eating a lot the previous night.D. Stopping being lazy for a change.25. What is paragraph 2 mainly about?A. Some of the author’s bad habits.B. Some ways of the author’s killing his spare time.C. The importance of sticking to the normal daily routine.D. The difficulty of the author’s keeping on with the workout plan.26. What does the underlined word “sabotage” in paragraph 3 probably mean?A. Improve.B. Hear.C. Prevent.D. Distinguish.27. What did the author learn from the workout challenge?A. Eating healthy food is more important than exercising.B. Overcoming a challenge could bring good feelings to him.C. It’s more important to see what he likes than just feel it.D. There was no need to feel guilty about things he disliked to do.CA new study shows that air pollution can cause a huge reduction in our intelligence. The study was a project involving researchers at Peking University in China and Yale University in the United States.The researchers reported that long-term exposure to air pollution can affect a person’s mental abilities in two areas: Language and math.The researchers studied about 25,000 people from across China. Between 2010 and 2014, these Chinese men, women and children were given language and math tests. Then researchers comparedthe test results with measurements of pollution in the air, namely nitrogen dioxide and sulfur dioxide(二氧化硫).Xi Chen of the Yale School of Public Health led the study. He and his team found that breathing polluted air can reduce a person’s education level by about one year.Chen said that the effect generally is worse for those over 64 years of age, for men and for those with little or no education."The older persons-they are more affected. And we find, quite amazingly, males are more affected than females. And people working outdoors are more affected than people working indoors."He noted that the youngest people in the study were 10 years old, while the oldest was 90 years old. They ca me from China’s 33 provinces. In his words, the data and facts are convincing and this range of ages and locations across the country provided a real, objective and representative sample.The researchers noted that the effect of air pollution on verbal ability is even more serious as people age, especially among men and the less educated. The researchers also stressed that every country, whether developed, developing or poor, should focus on air pollution or humans will face a bad situation.28. What is the result of the study?A. Females are more affected by air pollution than males.B. Air pollution has a bad effect on people’s intelligence.C. Americans are more affected by air pollution than Chinese.D. People working indoors are actually not affected by air pollution.29. What did Chen say about the study?A. It is doubtful.B. It is extremely unfair.C. It is common and not representative.D. It is relatively objective and persuasive.30. What did the researchers emphasize in the last paragraph?A. The data from the 33 provinces is convincing.B. The whole world should pay attention to air pollution.C. The less educated take more responsibility for air pollution.D. Air pollution’s influence on verbal ability is less serious as people age.31. Where is the text most likely taken from?A. A life diary.B. A guidebook.C. A biography.D. A science magazine.DStories are shared in many ways. They are described in books and magazines. They are read around the campfire at night. They are randomly distributed from stand-alone booths. But what else?To revive(复兴)literature in the era of fast news and smartphone addiction, Short Edition, a French publisher of short-form literature, has set up more than 30 story dispensers(分发机) in the USA in the past years to deliver fiction at the push of a button at restaurants, universities and government offices.Francis Ford Coppola, the film director and winemaker, liked the idea so much that he invested in the company and placed a dispenser at his CaféZoetrope in San Francisco. Last month public libraries in some other cities announced they would be setting them up, too. There is one on the campus at Penn State. A few can be found in downtown West Palm Beach, Fla. And Short Edition plans to announce more, including at the Los Angeles International Airport."Everything old is new again," said Andrew Nurkin, the director of the Free Library of Philadelphia, which is one of the libraries that set up the dispensers. “We want people to be easily exposed to literature. We want to advance literacy among children and inspire their creativity.”Here’s how a dispenser works: It has three buttons on top indicating choices for stories that can be read in one minute, three minutes or five minutes. When a button is pushed, a short story is printed. The stories are free. They are chosen from a computer category of more than 100,000 original submissions by writers whose works have been evaluated by Short Edition’s judges,and transmitted over a mobile network. Offerings can be tailored to specific interests, like children’s fiction or romance. Short Edition gets stories for its category by holding writing contests.Short Edition set up its first booth in 2016 and has 150 machines worldwide. “The idea is to make people happy,” said Kristan Leroy, director of Short Edition, “There is too much unhappiness today.”32. What do we know about the stories sent by dispensers?A. They are expensive.B. They are short in form.C. They can be read on smartphones.D. They are mainly taken from magazine literature.33. Where can you find the popularity of story dispensers in America?A. In paragraph 3.B. In paragraph 4.C. In paragraph 5.D. In paragraph 6.34. Which is the main purpose of setting up the dispensers according to Andrew Nurkin?A. To make people have access to literature.B. To get rid of people’s smartphone addiction.C. To reduce the financial stress of libraries.D. To advertise the network literature.35. What is the best title for the text?A. Online Reading: a Virtual TourB. Short Edition, a French PublisherC. Everything Old Will Be Popular AgainD. Taste of Literature, at the Push of a Button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。
河南省周口市扶沟县2020届高三下学期开学考试 数学含答案
一、选择题：本大题共12小题，每小题5分，在每小题给出的四个选项中，只有一项是符合题目要求的．1.已知集合M=｛寸8x 2-9 x +1 � 0 }, N ＝伈扣＝五言｝，则M n(C R N)=< )I I _ I I A.[I,十co) B.(..:_,..:_)C .[..:_,..:_)D .(.:..., I]8 2 -8 2 22i 2.在复平面内与复数z=——所对应的点关于实轴对称的点为A,则A 对应的复数为（）1 +i A.1 +i B. 1-i C . -I -i D. -l +z 3.已知a =log 。
32, b = 2°·1, c = s in 789°,则a ,b, c的大小关系是（）A.a< b < c B.a< c < b C.c<a <bD.b < c < a 4.函数f(x)= Asin(@x ＋们，（A,@>0，例＜冗）的部分图象如图，则f(x)的解析式为（）7兀24A.f(x) = 2sin （心＋f )B . f (x )=2s in (4x -f )V _3C..f(x)=2sin庄－琴］ D.f(x)=2sin(ix ＋子］5.河南省新郑市望京楼遗址位千新郑市新村镇杜村和孟家沟村以西及周边区域，北距郑州市35公里．遗址发现千20世纪60年代，当地群众平整土地时曾出土过一批青铜器和玉器等贵重文物．望京楼商代城址保存较为完整，城址平面近方形，东城墙长约590米、北城墙长约602米、南城墙长约630米、西城墙长约560米，城墙宽度为10米～20米，则下列数据中可作为整个城址的面积较为准确的估算值的是(A . 24万平方米B . 25万平方米C . 37万平方米D . 45万平方米6.2019年10月，德国爆发出“芳香经门”事件，即一家权威的检测机构在德国销售的奶粉中随机抽检了16款（德国4款、法国8款、荷兰4款），其中8款检测出芳香经矿物油成分，此成分会严重危害婴幼儿的成长，有些奶粉已经远销至中国．A 地区闻讯后，立即组织相关检测员对这8款品牌的奶粉进行抽检，已知该地区有6家婴幼儿用品商店在售这几种品牌的奶粉，甲、乙、丙3名检测员分别负责进行检测，每人至少抽检1家商店，且检测过的商店不重复检测，则甲检测员检测2家商店的概率为（） -2....＿_ 11A.— B.7 5 C.—1818 12 7.设抛物线y 2=-4x 的焦点为F,准线为l,P为抛物线上一点，7 D.—12PA上l,A 为垂足，如果直线河南省周口市扶沟县2020届高三下学期开学考试 含答案。
河南省周口市扶沟县2020届高三下学期开学考试文科综合历史试题
河南省周口市扶沟县2020届高三下学期开学考试文科综合历史试题学校_________ 班级__________ 姓名__________ 学号__________一、单选题1. 春秋中后期，晋、楚、秦等国相继开始推行县制。
晋国县制尤为发达，卿大夫都在各自领地内设县，委任有军功者为其长官。
春秋中后期，县制的推行A．冲击了传统政治秩序B．废除了贵族世袭特权C．强化了君主专制权力D．完善了地方行政制度2. 汉武帝建元六年（公元前135年），丞相田蚡奏请罢黜黄老、刑、名百家之言于官学之外，又延揽儒者数百人做官。
不治儒家经书的博士均被废罢，只剩下儒家的“五经博士”。
这表明当时A．黄老之学趋向消亡B．治国方略选择纯守儒术C．儒学受到高度重视D．儒学主流地位得以强化3. 宋初到南宋，宰相事权强化的趋势明显。
宰相的事权包括兵权、财权、司法权，出现了由分割到集中的过程，导致这一变化的主要原因是A．提高国家机构效能的需要B．适应政治中心南移的形势C．皇权与相权的矛盾不可调和D．君主集权体制逐步遭到破坏4. 明末清初，学者余起霞说：“吾乡习尚日异月新，余幼时见亲朋宴集，所用不过宋碗，其品或四或六，其味亦只鱼虾鸡豕……自后，宋碗变为宫碗，宫碗又变为冰盘，冰盘又变为五簋十景九云锣。
其中所陈，穷极水陆。
一席所费，可作贫家终岁需矣。
”这反映了明清时期A．民间手工业部门生产日益发达B．商品经济发展引发奢侈风尚盛行C．奢侈性消费导致社会走向贫困D．社会习俗逾越礼制现象日趋普遍5. 1853年，太平天国建都天京后即行规定：除官方印行宣传基督教教义的三种“真道书”外，“凡一切孔孟诸子百家妖书邪说者尽行焚除，皆不准买卖藏读也，否则问罪也”、“凡一切妖书，如有敢念诵教习者，一概皆斩”。
这些规定的目的是A．扫清西学传入中国的障碍B．加强意识形态领域的控制C．推行切实可行的文化政策D．赢得辖区士人的广泛支持6. 下表反映了1812-1911年中国粮食生产与消费的概况。
【数学】河南省周口市扶沟县2020届高三下学期开学考试 文科数学(PDF版)
18．（本小题满分 12 分）各项均不为零的数列{an} 前 n 项和为 Sn ，数列{nan2} 前 n 项和为 Tn ， 且 a1 2,Tn Sn2 (n 1,2,3, ). (1)求 a2 的值； (2)求数列{an} 的通项公式．
19．（本小题满分 12 分）如图，在直三棱柱 ABC A1 B1C1 中，E，F 分别为 A1C1, BC 的中点， C1F AB, AB BC AA1 2. (1)求证： C1F // 平面 ABE； (2)求三棱锥 E ABC1 的体积．
由(1) C1F // 平面 EAB 知： C1 到平面 EAB 的距离等于 F 到平面 EAB 的距离…………10 分
V ∴ EABC1 VC1EAB VF EAB VEABF ……………………11 分
∴ VEABF
1 3
S ABF
AA1
1 1 2 3
2 3
．所以三棱锥 E
ABC1
的体积为
由此可得这个曲边三角形面积的一个近似值为 ( )
A． 3 (e 1) 5
B． 4 (e 1) 5
C． 1 (e 1) 2
D． 2 (e 1) 3
8．已知抛物线 y2 2 px( p 0) 的焦点为 F ，点 P 为抛物线上一点，过点 P 作抛物线的准线的垂
线，垂足为 E ，若 EPF 60， △PEF 的面积为16 3 ，则 p （ ）
-23
扶沟高中 2019-2020 学年度（下）高三开学考试
所以 nan2 (Sn Sn1)an (n 2,3, ) …………………………………………………6 分
文科数学参考答案
一、单项选择题：本大题共 12 个小题，每小题 5 分，共 60 分．请将答案填涂在答题卷上.
河南省周口市扶沟县2020届高三语文下学期开学考试试题(PDF)
扶沟高中2019--2020学年度下期开学考试高三语文试卷命题：翟香菊做题人：张红燕、李让友审核：薛驰一、现代文阅读（36分）（一）论述类文本阅读（本题共3小题，9分）阅读下面的文字，完成1～3题。
一段时间以来，我们试图重新找到中国文化根性，展开从思维方式到价值体系的新论述。
在这样一个回头细看的过程中，传统文学生活中大量新事实被看见，与此同时，学界越来越进入到“史实还原”的阶段——在意识到要注重还原事实、还原历史现场之后，“中国文论”研究越来越多探向历史维度。
当下学界已经认识到，在大量新事实充分发现的基础上，需要有一个大的理论综合，超越以往对中国文艺的阐释与解读。
当今时代的中国文论要避免前面几个历史阶段带来的局限，发展出像中国哲学、中国历史那样强大的辐射力和解释力，发展出新的理论论述。
这个新论述就是“中国文论的历史自觉与现代阐释”。
这一新论述有两个轮子，一是中国文学与艺术自身的新事实与新意义；一是活古化今，在解释当今文艺实践中不断丰富提炼出新的话语。
中国文论研究在“回头看”过程中温故知新，不断更新文艺研究眼光，新眼光又使得中国文学与艺术自身的新事实被看见。
其中最显著的是文学边界的扩大、文学功能的再发现。
譬如，不同于西方文学对虚构性的强调，在中国文学中，非虚构文学占据尤为重要的地位。
近年来无论是诗人生平与作品关系研究，还是诗与历史事件、诗与日常经验研究的大量新事实，都已充分证明这一点。
在以诗文为主流的中国古代文学中，文学写作乃是写亲身闻见、亲身经历的现实世界情景及由此而来的真情实感，不同于现代以来以“积极虚构”为主流的文学观念。
非虚构与虚构同时存在，延伸文学边界，扩展文学功能，使得文学不仅是少数人秀异的语文游戏与奇妙幻想，而且跟普通人日常生活息息相关，可谓一草一木总关情。
我们正在进入一个重新认识中国文学艺术的时代，这与中国文化整体复苏和社会普遍文化自觉是相适应的。
中国文论是否具有强大解释力和生命力，还要看它能否有效阐释当今文艺实践。
河南省周口市扶沟县2020届高三下学期开学考试+历史+Word版含答案
河南省周口市扶沟县2020届高三下学期开学考试+历史+Word版含答案扶沟高中2019－2020学年度下期开学考试高三历史试题全卷满分300分考试时间140分钟第I卷一、选择题(本题共35题，每题4分，共140分。
每小题给出的四个选项中，只有一个是符合题目要求的)。
24.春秋中后期，晋、楚、秦等国相继开始推行县制。
晋国县制尤为发达，卿大夫都在各自领地内设县，委任有军功者为其长官。
春秋中后期，县制的推行A.冲击了传统政治秩序B.废除了贵族世袭特权C.强化了君主专制权力D.完善了地方行政制度25.汉武帝建元六年(公元前135年)，丞相田蚡奏请罢黜黄老、刑、名百家之言于官学之外，又延揽儒者数百人做官。
不治儒家经书的博士均被废罢，只剩下儒家的“五经博士”。
这表明当时A.黄老之学趋向消亡B.治国方略选择纯守儒术C.儒学受到高度重视D.儒学主流地位得以强化26.宋初到南宋，宰相事权强化的趋势明显。
宰相的事权包括兵权、财权、司法权，出现了由分割到集中的过程，导致这一变化的主要原因是A.君主集权体制逐步遭到破坏B.适应政治中心南移的形势C.皇权与相权的矛盾得以调和D.提高国家机构效能的需要27.明末清初，学者余起霞说：“吾乡习尚日异月新，余幼时见亲朋宴集，所用不过宋碗，其品或四或六，其味亦只鱼虾鸡豕……自后，宋碗变为宫碗，宫碗又变为冰盘，冰盘又变为五簋十景九云锣。
其中所陈，穷极水陆。
一席所费，可作贫家终岁需矣。
”这反映了明清时期A.民间手工业部门生产日益发达B.商品经济发展引发奢侈风尚盛行C.奢侈性消费导致社会走向贫困D.社会习俗逾越礼制现象日趋普遍28.1853年，太平天国建都天京后即行规定：除官方印行宣传基督教教义的三种“真道书”外，“凡一切孔孟诸子百家妖书邪说者尽行焚除，皆不准买卖藏读也，否则问罪也”、“凡一切妖书，如有敢念诵教习者，一概皆斩”。
这些规定的目的是A.扫清西学传入中国的障碍B.加强意识形态领域的控制C.推行切实可行的文化政策D.赢得辖区士人的广泛支持29.下表反映了1812－1911年中国粮食生产与消费的概况。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
绝密★启用前
河南省周口市扶沟县普通高中
2020届高三年级下学期开学摸底考试
数学(理)试题
2020年1月31日
一、选择题：本大题共12小题，每小题5分，在每小题给出的四个选项中，只有一项是符合题目要求的。
1.已知集合M ＝{x|8x 2－9x ＋1≤0}，N ＝{x|y ＝21x -}，则M ∩(R ðN)＝
A.[1，＋∞)
B.(
18，12) C.[18，12) D.(12
，1] 2.在复平面内与复数21i z i =+所对应的点关于实轴对称的点为A,则A 对应的复数为 A.1＋i B.1－i C.－1－i D.－1＋i
3.已知a ＝log 0.32,b ＝20.1,c ＝sin789°,则a,b,c 的大小关系是
A.a<b<c
B.a<c<b
C.c<a<b
D.b<c<a
4.函数f(x)＝Asin(ωx ＋φ),(A,ω>0,|φ|<π)的部分图象如图,则f(x)的解析式为
A.()2sin(4)3f x x π=+
B.()2sin(4)3
f x x π
=- C.48()2sin()39f x x π=- D.48()2sin()39
f x x π=+ 5.河南省新郑市望京楼遗址位于新郑市新村镇杜村和孟家沟村以西及周边区域,北距郑州市35公里。
遗址发现于20世纪60年代,当地群众平整土地时曾出土过一批青铜器和玉器等贵重文物。
望京楼商代城址保存较为完整,城址平面近方形,东城墙长约590米、北城墙长约602米、南城墙长约630米、西城墙长约560米,城墙宽度为10米～20米,则下列数据中可作为整个城址的面积较为准确的估算值的是
A.24万平方米
B.25万平方米
C.37万平方米
D.45万平方米
6.2019年10月,德国爆发出“芳香烃门”事件,即一家权威的检测机构在德国销售的奶粉中随
机抽检了16款(德国4款、法国8款、荷兰4款),其中8款检测出芳香烃矿物油成分,此成分会严重危害婴幼儿的成长,有些奶粉已经远销至中国。
A 地区闻讯后,立即组织相关检测员对这8款品牌的奶粉进行抽检,已知该地区有6家婴幼儿用品商店在售这几种品牌的奶粉,甲、乙、丙3名检测分别负责进行检测,每人至少抽检1家商店,且检测过的商店不
重复检测,则甲检测员检测2家商店的概率为 A.1118 B.718 C.512 D.712
7.设抛物线y 2＝－4x 的焦点为F,准线为l ,P 为抛物线上一点,PA ⊥l ,A 为垂足,如果直线AF 的斜
率为3
,那么|PF|＝ A.23 B.43 C.73
D.4 8.已知正方体ABCD －A 1B 1C 1D 1中,点E 是线段A 1D 1的中点,点F 是线段DD 1上靠近D 的三等分点,则直线CE,BF 所成角的余弦值为
9.已知函数f(x)的图象关于原点对称,且满足f(x ＋1)＋f(3－x)＝0,且当x ∈(2,4)时,12()log (1)f x x m =--+,若
(2021)1(1)2
f f -=-,则m ＝ A.43 B.34 C.－43 D.－34
10.在Rt △ABC 中,已知∠C ＝90°,CA ＝3,CB ＝4,P 为线段AB 上的一点,且CA CB CP x y CA
CB =⋅+⋅u u u r u u u r u u u r u u u r u u u r ,则11x y +的最小值为
A.76
B.712
C.7123+
D.763+11.已知双曲线22
221(0,0)x y a b a b
-=>>的左、右焦点分别为F 1,F 2,若双曲线的左支上存在一点P,使得PF 2与双曲线的一条渐近线垂直于点H,且|PF 2|＝4|F 2H|,则此双曲线的离心率为
B.43 D.53。