2019年9月西南四省八校名校联盟2020届高三上学期高考适应性月考卷(一)文综政治试题(解析版)

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重庆市西南名校联盟2020届高三理科数学第一次适应性月考试卷附答案详析

重庆市西南名校联盟2020届高三理科数学第一次适应性月考试卷附答案详析

重庆市西南名校联盟2020届高三第一次适应性月考理科数学试卷(全卷满分150分;考试用时120分钟)一、选择题(本题共12小题,每小题5分,共60分。

在每小题给出的四个选项中,只有一项是符合题目要求的)1.己知集合{}{}(6)(2)0,2A x x x B x y x =+-<==-,则()R A B ⋂=ð()A.[-2,1)B.[-3,1)C.(-6,2)D.(-6,-2]2.已知实数m 、n 满足m -2i =n(2+i),则在复平面内,复数z =m +ni 所对应的点位于()A.第一象限B.第二象限C.第三象限D.第四象限3.己知向量m =(-1,1),n =(1,λ),若m ⊥n ,则m +n 与m 之间的夹角为()4.已知命题p :2(,0),2310x x x ∀∈-∞-+>,命题q :若x ≥0,则22310x x -+≤,则以下命题正确的为()A.p 的否定为“2[0,),2310x x x ∃∈+∞-+≤”,q 的否命题为“若x<0,则22310x x -+>”B.p 的否定为“2(,0),2310x x x ∃∈-∞-+≤”,q 的否命题为“若x<0,则22310x x -+>”C.p 的否定为“2[0,),2310x x x ∃∈+∞-+≤”,q 的否命题为“若x ≥0,则22310x x -+>”D.p 的否定为“2(,0),2310x x x ∃∈-∞-+≤”,q 的否命题为“若x ≥0,则22310x x -+>”5.如图是一个算法流程图,若输入n 的值是13,输出S 的值是46,则a 的取值范围是()A.9≤a<10B.9<a ≤10C.10<a ≤11D.8<a ≤96.在三棱锥D -ABC 中,DC ⊥底面ABC ,AD =6,AB ⊥BC ,且三棱锥D -ABC 的每个顶点都在球O 的表面上,则球O 的表面积为()A.144πB.100πC.64πD.36π7.若关于x ,y 的混合组:2190802140(0,1)x x y x y x y y a a a +-≥⎧⎪-+≥⎪⎨+-≤⎪⎪=>≠⎩,有解,则a 的取值范围是()A.[1,3]B.[2,10]C.[2,91]D.[10,9]8.如图所示,网格纸上小正方形的边长为l ,下图画出的是某几何体的三视图,则该几何体的体积为()A.12B.18C.24D.369.若函数2()ln f x x a x=-+(a 是与x 无关的实数)在区间(1,e)上存在零点,则实数a 的取值范围为()A.0<a<2B.2e<a<2 C.2e -1<a<2 D.2e+1<a<210.若非零向量a ,b 的夹角为锐角θ,且cos a bθ= ,则a 被b “同余”。

2020届西南名校联盟高考适应性月考(一)生物试卷及解析

2020届西南名校联盟高考适应性月考(一)生物试卷及解析

2020届西南名校联盟高考适应性月考(一)生物试卷注意事项:1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案标号。

回答非选择题时,将答案写在答题卡上,写在本试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

一、选择题:本题共13个小题,每小题6分,共78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.下列有关细胞结构与功能的叙述,不正确...的是A.真核细胞的各种生物膜中都含有丰富的磷脂B.某些细胞器衰老后可被溶酶体吞噬、消化C.真核细胞的RNA主要在细胞核中合成D.细胞内以囊泡的形式运输的物质都是大分子化合物2.下列有关生物实验的叙述,正确的是A.制作洋葱根尖细胞有丝分裂装片时,根尖解离后即用醋酸洋红液染色B.检测酵母菌培养过程中是否产生二氧化碳,可判断其细胞呼吸方式C.调查人群中某种遗传病的发病率时,应选择有遗传病的家系进行调查统计D.验证DNA半保留复制时,可用含有3H标记的胸腺嘧啶脱氧核苷酸培养液培养细菌3.人类囊性纤维病是由于第7号染色体上编码CFTR(一种跨膜蛋白)的基因缺失3个碱基,使CFTR的结构发生异常,从而导致其转运氯离子的功能异常。

CFTR的作用机理是ATP与CFTR上的两个结合位点相互作用,从而引起CFTR构象发生变化,进而使通道孔打开和闭合。

下列叙述不正确的是()A.在正常细胞中,CFTR运输Cl-最可能的方式是主动运输B.氯离子跨膜运输的正常进行是由膜上通道蛋白决定的C.基因能通过控制蛋白质的结构来控制生物体的性状D.基因碱基数目的改变一定会导致蛋白质结构的改变4.NAA和6-苄基氨基嘌呤(6-BA)分别是人工合成的生长素、细胞分裂素的类似物,为探究NAA和6-BA对月季插条生根的影响,科研人员用一定浓度的NAA 和6-BA(单位:mg·L-1)培养液同时处理插条,实验结果如下图所示。

四川省仁寿一中等西南四省八校2019—2020学年高三9月份联考试题英语试题及答案解析

四川省仁寿一中等西南四省八校2019—2020学年高三9月份联考试题英语试题及答案解析

四川省仁寿一中等西南四省八校2020届高三9月份联考英语试题注意事项:1.答题前填写好自己的姓名、班级、考号等信息;2.请将答案正确填写在答题卡上。

第I卷(选择题)一、阅读理解Let’s look at the movies we can’t wait to watch in 2019!Dumbo (March 29)Dumbo is a 1941 American film produced by Walt Disney Productions. The main character is an elephant who is nicknamed “Dumbo”. Dumbo is always laughed at for his big ears, and he is rejected by the other elephants. With no parent to care for him, he is alone. But in fact, he is capable of flying by using his ears as wings. A live-action adaptation of the film directed by Tim Burton is scheduled to be released on March 29, 2019.Shazam! (April 5)Shazam is an upcoming American superhero film based on the DC Comics character of the same name. Directed by David F. Sandberg, the film is set to star Asher Angel as Billy Batson, a teenage boy who can transform via the magic word “Shazam” into an adult superhero, played by Zachary Levi. It will be the first film version of the character since the 1941 series Adventures of Captain Marvel (the character’s original name).Aladdin (May 24)Aladdin is a fictional character and the role of the film Aladdin (1992) based on Aladdin, a folk tale of Middle Eastern origin. He is voiced by Scott Weinger, while his singing voice is provided by Brad Kane. Aladdin never received a formal education, and has only learned by living on the streets of Agrabah. He has to steal food in the local market in order to survive. Mena Massoud is set to play a live-action version of the character in a live action adaptation of the 1992 film.Godzilla, King of the Monsters (May 31)Godzilla, King of the Monsters is a 1956 Japanese-American science fiction film,co-directed by Terry O. Morse and Ishiro Honda. It is a heavily re-edited American adaptation. For this new version of Godzilla, some of the original Japanese dialogue was translated into English, and some of the political, social and anti-nuclear themes were removed completely. 1.On which day can you watch a film about a pitiful animal according to the text?A.March 29.B.April 5.C.May 24.D.May 31.2.Which one will be shown to the audience as a form of film for the first time?A.Dumbo.B.Shazam!C.Aladdin.D.Godzilla, King of the Monsters. 3.Who is the actor of the newest version of Aladdin?A.Scott Weinger.B.Brad Kane.C.Terry 0. Morse.D.Mena Massoud.Facebook is a place where we share and celebrate memories with our friends and family. We post words and pictures honoring birthdays, anniversaries and weddings. We also show respect to the people we lost, and find sympathy and support among our friends.Sheryl Sandberg, Facebook’s chief operating officer, recently shared a moving post about her late husband, Dave Goldberg, on what would have been his 48th birthday.“Today my famil y and friends and I mourn that he was taken away from us so suddenly and so young,” wrote Sandberg, 46, tagging Goldberg’s memorial page. “It has been a long 22 weeks, grappling moment to moment and day to day with the often overwhelming void (空虚) that his death has left in our lives.”She shared photos of Goldberg—one from their wedding and the other of what appears to be him as a child. The Facebook manager went on to thank her family and friends for their ongoing support, and to praise her husband’s achi evements as a father and CEO of the company Survey Monkey.Sandberg said in a Facebook post back in June, in ceremony of the end of the first month for her husband’s death, “I was talking to a friend Phil about a father-child activity that Dave is not here to do. We came up with a plan to fill in for Dave. I cried to him, ‘ But I want Dave. He put his arm around me and said, ‘Option A is not available. So let’s just kick the shit out of option B.”4.Facebook is a place where we ________.A.have our daily activitiesB.have commercial activitiesC.mainly honor our dead relativesD.exchange something we remember with people around us5.What does the underlined word “grappling” in Paragraph 3 mean?A.Expecting.B.Struggling.C.Missing.D.Reminding.6.What can we know about Sandberg’s husband?A.He died last May.B.He was Phil’s boss.C.He died of cancer.D.He was head of Facebook.7.What can we infer from the phrase “kick the shit out of option B” in the last paragraph?A.It’s a game in which Phil is kicked out.B.Sandberg can’t live without Goldberg.C.Sandberg refuses Dave as her husband.D.They will find a person taking the place of Dave.Children are now more likely to want to work in social media or gaming than traditional careers, a survey has found. According to the new research, many seven to eleven-year-olds are looking at modern technology when they think about future jobs, rather than professions such as police officer or doctor. Children’s career aspirations are often based on factors such as gender st ereotypes or what they’ve seen in the media, TV and film.Around 21% said they wanted to be sportsmen or sportswomen, followed by 11% wanting to be teachers, and 7% wanting to be vets. Another 6% wanted to work in social media and gaming. This was a sign t hat there had been “a shift in the aspirations of children, built largely upon new communication methods and the growth of online and console-based gaming”.“For more and more children and young people, online celebrities and YouTube gaming ‘vloggers’ have taken the place of TV and movie stars,” the report said. Social media and gaming is the fourth most popular career choice for children, while singer/musician and actor/actress further down the list at ninth and thirteenth.“It could be argued that this is due to the growing fame and attraction of YouTube and video blogging stars, who are especially popular among younger audiences.” Also, thesechoices may also speak to children’s present worlds. Many seven to eleven-year-olds will spend their time gaming and perhaps simultaneously watching celebrity gaming bloggers instructing them how to do it.The survey found that 5% of children who took part wanted to be in the police, with the same proportion planning on becoming doctors. A gender breakdown shows the top job choice for girls was teacher (19%), followed by vet (11%) and sportswoman (9%), while for boys it was sportsman (34%) followed by social media and gaming (9%) and police (8%).This highlights the pressing need for closer ties between employers and schools, to make sure that all children have access to role models in a wide range of sectors to help them develop an awareness of career options at an early age. “This is important to ensure that all children—regardless of gender and backgrounds—can fulfil l their full potential.”8.What is concluded in the study?A.Children prefer online celebrities to an actor now.B.Children spend more time playing games.C.Children are addicted to social media.D.Children know nothing but modem technology.9.What has contributed to changing chil dren’s career aspirations?A.Gender stereotypes.B.The new methods of communication.C.Their different backgrounds.D.Their level of education.10.What do the numbers in the last but one paragraph suggest?A.Vets are disliked by girls.B.Girls aren’t suita ble for police.C.Gender influences children’s choice of a job.D.Sports stars are popular with boys and girls.11.Why do children need an awareness of career choices early?A.They can build close relationship with employers.B.They can work in different sectors.C.They can become role models.D.They can explore their potential fully.People from all over the world filled the cruise ship (游轮). My husband, Dale, and I were sailing along the Alaskan coast, and there were so many things to do : eat delicious food, swim in the pool or relax in the cafe.But I couldn’t stop thinking about my secret dream: to sing on a cruise ship. You must have thought I was crazy. Back when Dale and I went on our first cruise, the music made me want to sing onboard, to share the joy I got from the cruise.We greeted the other passengers in the cafe, and the host said something to get things started. Then he opened the floor to anyone who wished to speak. Dale raised his hand. “My wife has a song she’d like to sing.”The host nodded his head. The other passengers looked at me hopefully. I stood up, my heart beating fast. Dale held my hand. The group applauded (鼓掌) as I finished the final note. Yd barely touched the chair when someone called out, “Sing another one!” Everyone agreed. I sang two more songs. What a day! What a trip!The next afternoon, Dale and I were walking to our room when I heard my name. It was a woman from the cafe. “Won’t you sing something for me?” I sang right there in the hallway. Heads turned toward me. One man nodded to my words. A woman smiled as she passed. We continued to our room. But we didn’t make it far. Another woman stopped us. “You have a great gift,” she said.We sailed on. And all the way, people kept asking me to sing. Dale and I had gotten used to it by now. I felt honored, but not because the other passengers liked my voice.12.Why did the author look forward to singing on a cruise ship?A.To show off her gift on music.B.To attract more attention.C.To make more friends.D.To express her joy with the music.13.Why did the host open the floor on the cruise ship?A.To encourage others to speak.B.To invite someone to enter the cabin.C.To invite people present to drink.D.To advise starting a dance party.14.What can we know about the author from the text?A.She was a professional singer.B.She sang two songs in the cafe at that time.C.She felt nervous the first time she sang in the cafe.D.She became famous all over the world after that sail.15.Why did the author feel honored?A.She could sing songs with beautiful voice.B.She could do anything as she wished.C.She was popular among other passengers.D.She finally realized her secret dream.二、完形填空As a volunteer crisis counselor with Crisis Text Line, a free hotline, all via text messages, I am very proud. 16 most of the texters who reach out to us are under the age of 25, this activity 17 me with the chance to interact with the 18 generation.Crisis counselors are trained in a six-week training program 19 good contact techniques and 20 such as self-harm, suicide, depression, and bullying. Because of the training I 21 , I can give texters the tools they need to get some 22 .My favorite thing about being a crisis counselor is the active 23 . When people express intentions to 24 suicide, we immediately send emergency services to 25 the tragedy from happening. The moment a texter tells me, “they are here”, I feel 26 because I realize I have helped a (an) 27 person get the help he or she needs badly. For me, it’s not only about saving lives ; it’s also about letting these people know that people28 .There is a phrase I tell my texters all the time: “You matter.” It is 29 that so many respond with, ‘‘Wow, I have never heard that before! “Those two words 30 my texters that they are going to be OK. All the pain, anxiety, and the 31 thoughts don’t matter. It is texters 32 matter.When they 33 to me and let me know they are really listening to my words, it brings me a comforting feeling. I think, 34 a way, it is also healing to the little girl in me who struggled with unknown fear and anxiety for so many years. I think I am a much better and 35 person since I became a crisis counselor.16.A.If B.Though C.But D.Since17.A.provides B.equips C.charges D.presents 18.A.older B.younger C.former ter19.A.ignoring B.displaying C.covering D.promoting 20.A.diseases B.events C.items D.issues21.A.received B.offered C.gathered D.witnessed 22.A.resistance B.insurance C.assistance D.evidence 23.A.goals B.rescues C.instructions D.members 24.A.operate B.handle C.attract mit 25.A.separate B.free C.prevent D.tell26.A.relieved B.shocked C.puzzled D.convinced 27.A.optimistic B.simple C.desperate D.merciful 28.A.care B.work C.lie D.hesitate 29.A.confusing B.touching C.annoying D.surprising 30.A.warn B.assure C.urge D.question 31.A.reasonable B.curious C.positive D.negative 32.A.which B.that C.whom D.whose33.A.open up B.give in C.get down D.look up 34.A.by B.on C.in D.with35.A.healthier B.wealthier C.fatter D.slimmer第II卷(非选择题)三、七选五According to the UN’s World Happiness Report for 2017, Denmark is officially the happiest country on Earth. Here is the list of reasons behind the happiness.A different view of moneyDanes (丹麦人) tend not to be concerned with “keeping up with the Joneses”. 36.Rather than buying the fanciest cars or the most expensive houses, Danish people spend money on leisure activities such as hobbies, outings with friends, or games.An enjoyable jobs climate37.They also work, on average, 1,522 hours per year, which is lower than most countries. Not only does this give them more leisure time, it is not detrimental(不利的), as the averageyearly income is $59,850. Besides, Denmark has the lowest income inequality and highest minimum wage in the world.38.The importance placed on human communication fosters a belief in one’s neighbours, and a trust that if something bad were to happen, the community would come to help them. 94% of Danes report that they have somebody they could rely on in time of need.A clean environmentThe government encourages green policies, such as bicycling in cities, in order to cut down on harmful emissions. Like bicycling, many of these measures also have other benefits. 39.In Denmark, levels of air pollution, water pollution, and agricultural pollution are also lower than most other countries.40..A.Somebody to lean onB.Somebody to seek advice fromC.There are also many beautiful parks in DenmarkD.Danes have lower unemployment rates than most countries in the worldE.Instead, they view money as a kind of means to connect with other peopleF.Cities where bicycling is common have less traffic, less noise, and healthier citizens G.Look over all these factors,it becomes apparent that almost anybody would love living in Denmark四、语法填空阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

2020届西南名校联盟高考适应性月考卷(一)数学(理)

2020届西南名校联盟高考适应性月考卷(一)数学(理)

2020届高考适应性月考卷(一)理科数学★祝考试顺利★注意事项:1、考试范围:高考范围。

2、试题卷启封下发后,如果试题卷有缺页、漏印、重印、损坏或者个别字句印刷模糊不清等情况,应当立马报告监考老师,否则一切后果自负。

3、答题卡启封下发后,如果发现答题卡上出现字迹模糊、行列歪斜或缺印等现象,应当马上报告监考老师,否则一切后果自负。

4、答题前,请先将自己的姓名、准考证号用0.5毫米黑色签字笔填写在试题卷和答题卡上的相应位置,并将准考证号条形码粘贴在答题卡上的指定位置。

用2B 铅笔将答题卡上试卷类型A 后的方框涂黑。

5、选择题的作答:每个小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑。

写在试题卷、草稿纸和答题卡上的非选择题答题区域的答案一律无效。

6、主观题的作答:用签字笔直接答在答题卡上对应的答题区域内。

写在试题卷、草稿纸和答题卡上的非答题区域的答案一律无效。

如需改动,先划掉原来的答案,然后再写上新答案;不准使用铅笔和涂改液。

不按以上要求作答无效。

7、保持答题卡卡面清洁,不折叠,不破损,不得使用涂改液、胶带纸、修正带等。

8、考试结束后,请将本试题卷、答题卡、草稿纸一并依序排列上交。

一、选择题(本题共12小题,每小题5分,共60分。

在每小题给出的四个选项中,只有一项是符合题目要求的)1.己知集合{}{(6)(2)0,A x x x B x y =+-<==,则()R A B ⋂=ð( ) A.[-2,1) B. [-3,1) C. (-6,2) D. (-6,-2]2.已知实数m 、n 满足m -2i =n(2+i),则在复平面内,复数z =m +ni 所对应的点位于( )A.第一象限B.第二象限C.第三象限D.第四象限3.己知向量m =(-1,1),n =(1,λ),若m ⊥n ,则m +n 与m 之间的夹角为( )4.已知命题p :2(,0),2310x x x ∀∈-∞-+>,命题q :若x ≥0,则22310x x -+≤,则以下命题正确的为( )A.p 的否定为“2[0,),2310x x x ∃∈+∞-+≤”,q 的否命题为“若x<0,则22310x x -+>” B. p 的否定为“2(,0),2310x x x ∃∈-∞-+≤”,q 的否命题为“若x<0,则22310x x -+>” C. p 的否定为“2[0,),2310x x x ∃∈+∞-+≤”,q 的否命题为“若x ≥0,则22310x x -+>” D. p 的否定为“2(,0),2310x x x ∃∈-∞-+≤”,q 的否命题为“若x ≥0,则22310x x -+>”5.如图是一个算法流程图,若输入n 的值是13,输出S 的值是46,则a 的取值范围是()A.9≤a<10B.9<a ≤10C.10<a ≤11D.8<a ≤96.在三棱锥D -ABC 中,DC ⊥底面ABC ,AD =6,AB ⊥BC ,且三棱锥D -ABC 的每个顶点都在球O 的表面上,则球O 的表面积为( )A.144πB.100πC.64πD.36π7.若关于x ,y 的混合组:2190802140(0,1)x x y x y x y y a a a +-≥⎧⎪-+≥⎪⎨+-≤⎪⎪=>≠⎩,有解,则a 的取值范围是( ) A.[1,3] B.[2C.[2,91]9]8.如图所示,网格纸上小正方形的边长为l ,下图画出的是某几何体的三视图,则该几何体的体积为()A.12B.18C.24D.369.若函数2()ln f x x a x =-+(a 是与x 无关的实数)在区间(1,e)上存在零点,则实数a 的取值范围为( )A.0<a<2B.2e <a<2 C.2e -1<a<2 D.2e +1<a<210.若非零向量a ,b 的夹角为锐角θ,且c o s a b θ=,则a 被b “同余”。

2019-2020学年度第一学期9月四校联考试题

2019-2020学年度第一学期9月四校联考试题

2019-2020学年度第一学期9月四校联考试题本试卷分为第Ⅰ卷(选择题共三部分)和第Ⅱ卷(非选择题一部分),共8页。

试卷满分120分。

考试用时100分钟。

第Ⅰ卷(选择题共85分)第一部分:听力理解(共两节,满分20分)第一节:(共5小题;每小题1分,满分5分) 听下面5段对话。

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

听完每段对话后,你将有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. When will the speakers get there for the concert?A. At 6:00 pm.B. At 7:00 pm.C. At 7:30 pm.2. What’s the problem with the man’s apartment?A. It is dirty.B. The water is running.C. It has no hot water.3. Where does the conversation probably take place?A. Over the phone.B. In a store.C. At home.4. What conclusion can we draw from the conversation?A. It is easy to pass the exam given by Mr. Smith.B. Mr. Smith often makes mistakes.C. Mr. Smith’s course is difficult.5. What can we learn about the man?A. He drove very carefully.B. He drove carelessly and got a traffic ticket.C. He always drove through a lot of traffic.第二节:(共10小题;每小题1.5分,满分15分)听下面几段材料。

西南名校联盟2020届高三上学期质量监测文科数学及答案

西南名校联盟2020届高三上学期质量监测文科数学及答案

2020届高考适应性月考卷(一)文科数学参考答案一、选择题(本大题共12小题,每小题5分,共60分)【解析】1.{012}A =,,,{30}B =-,,{3012}A B =-,,,,故选D .2.222i 2i i 12i 12i i i 1z -+-+--====+-,复数z 对应的点位于第一象限,故选A .3.设三个区域圆心角比值3∶4∶5,故区域三所占面积比为512,故选C .4.选项B ,深圳、厦门的春节期间往返机票价格同去年相比有所下降,但北京的春节期间往返机票价格同去年相比有所上升;选项C ,平均价格从高到低居于前三位的城市是北京、深圳、广州;选项D ,平均价格的涨幅从高到低居于前三位的城市为天津、西安、南京,故选A .5.令x 等于x -,得32()()()()1f x g x x x ---=-+-+,利用()f x 和()g x 的奇偶性,可知32()()1f x g x x x +=-++,当2x =时,(2)(2)3f g +=-,故选B .6.由302n a n =-可知,{}n a 为等差数列,2(28302)292n n n S n n +-==-+, 当14n =或15时,n S 取得最大值,14210S =,故选D .7.由5e 5x y =-+求导,得5e x y '=-,当0x =时,5k =-,则切线方程为05(0)y x -=--,整理得50x y +=,故选C .8.由A ,B ,C ,D 是同一球面上四个点,△ABC 是正三角形,AD ⊥平面ABC ,可知球内为直三棱柱,球心为直三棱柱的中心,底面三角形的外接圆半径为32sin 60r =︒,r的半径为222639R =+=,球的表面积为24π4π39156πS R ==⨯=,故选D . 9.由1i =,1j =时,2j =,2S =,2i =;4j =,10S =,3i =;8j =,34S =,4i =;16j =,98S =,5i =,故选B .10.利用点差法可得,设11()A x y ,,22()B x y ,,代入椭圆方程得22112222222211x y a b x y a b ⎧+=⎪⎪⎨⎪+=⎪⎩,,两式相减得22221212220x x y y a b --+=,整理得12122()()x x x x a -++12122()()0y y y y b -+=,可得223a b =,222c b =,故c e a ==,故选A . 11.如图1,在可行域范围内,当取点(00),时,得最小值为0;当取点(010),时,得最大值为20,故选C . 12.由题意,令()()2F x f x x =+,由任意x y <,()()2f x f y x y->--,可得()2()2f x x f y y +<+,∴()F x 在定义域内单调递增,由(1)1f =,得(1)(1)2F f=+=,∵2(log |31|)3|31|x x f -<--等价于2(l o g |31|)xf -+22log |31|3x -<,令2log |31|x t =-,有()23f t t +<,则有1t <,即2log |31|1x -<,从而|31|2x -<,解得1x <,且0x ≠,故选A .二、填空题(本大题共4小题,每小题5分,共20分)【解析】13.由||||2a b ==,(2)a a b ⊥-,得1cos 2θ=,2||()23a b a b+=+=. 14.由{}n a 是公差为2-的等差数列,11S a =,2122S a =-,41412S a =-,再由1S ,2S ,4S 成等比数列,得2111(22)(412)a a a -=-,即11a =-.15.由双曲线方程可知,a m =,b =c =2c e a ===,得21m =,则焦点坐标为(02)±,.16.直线OP 与平面1A BD 所成的角为α的取值范围是111ππ22AOA C OA ⎡⎤⎡⎤∠∠⎢⎥⎢⎥⎣⎦⎣⎦,,,由于图11sin AOA ∠,111111sin 2sincos 222C OA C OA C OA ∠∠∠===,πsin12= ,所以sin α的取值范围是1⎤⎥⎣⎦,则cos α的取值范围为0⎡⎢⎣⎦. 三、解答题(共70分.解答应写出文字说明,证明过程或演算步骤) 17.(本小题满分10分)解:(1)由312a a d =+,可知2d =, 1(1)2n a a n d n =+-=.………………………………………………………(5分)(2)由124b a ==,212312b a a a =++=,211234b q b ===, 1(1)4(13)232113n n n n b q S q --===---.……………………………………(10分)18.(本小题满分12分)解:(1)根据频率分布直方图得第一组频率为0.0150.05⨯=, ∴120.05x=,∴240x =. ………………………………………………(4分)(2)设中位数为a ,则0.0150.075(30)0.060.5a ⨯+⨯+-⨯=, ∴95323a =≈, ∴中位数为32.…………………………………………………………(8分)(3)(i )5个年龄组的平均数为11(9396979490)945x =++++=,方差为22222211[(1)230(4)]65s =-++++-=,…………………………(9分)5个职业组的平均数为21(9398949590)945x =++++=,方差为22222221[(1)401(4)] 6.85s =-++++-=.…………………………(10分)(ii )评价:从平均数来看两组的认知程度相同,从方差来看年龄组的认知程度更好. 感想:结合本题和实际,符合社会主义核心价值观即可.………………………………………………………………(12分)19.(本小题满分12分)解:(1)由向量a 与向量b 共线,可得π()2sin 3f x x ⎛⎫=- ⎪⎝⎭,则函数()f x 的最小正周期为2πT =,函数的最大值为2.…………………………………………………………(4分)(2)由π16f A ⎛⎫-= ⎪⎝⎭,得120A =︒,……………………………………(6分)由正弦定理,可得sin sin a bA B == 得2b =, ………………………………………………………………(8分)sin sin cos cos sin C A B A B =+=, ………………………………(10分)则三角形的面积S =. …………………………………………(12分)20.(本小题满分12分)(1)证明:∵AD ⊥平面BCD ,BC ⊂平面BCD ,∴AD BC ⊥, 又∵AC BC ⊥,ACAD A =,∴BC ⊥平面ACD ,BC ⊂平面ABC , ∴平面ABC ⊥平面ACD .……………………………………………………(6分)(2)解:如图2,作CD 的中点为F ,连接EF , 令A 到平面CED 的距离为d , 则11233A ECD ECD E ACD ACD VS d V S --===△△, 解得d . ……………………………………(12分) 21.(本小题满分12分)(1)解:函数21()(1)ln 2f x x a x a x =+--,a ∈R , 可得()1af x x a x'=+--,因为()f x 存在极值点为2, 所以(2)0f '=,即2a =.………………………………………………(5分)(2)证明:()f x 的导数为()1(1)1(0)a a f x x a x x x x ⎛⎫'=+--=+-> ⎪⎝⎭, ①当0a ≤时,()0f x '>恒成立,所以()f x 在(0)+∞,上为增函数,不符合题意;…………………………………………………………(6分)②当0a >时,由()0f x '=,得x a =,图2当x a >时,()0f x '>,所以()f x 为增函数; 当0x a <<时,()0f x '<,所以()f x 为减函数, 所以当x a =时,()f x 取得极小值()f a , ………………………………(8分)又因为()f x 存在两个不同零点,所以()0f a <,即21(1)ln 02a a a a a +--<,整理得1ln 12a a >-, 令1()ln 12h a a a =+-,11()02h a a '=+>,()h a 在定义域内单调递增,e e e e e e (e)ln 1ln e 1ln 2224224h h ⎛⎫⎛⎫⎛⎫⎛⎫=+-+-=- ⎪ ⎪⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭,………………………………………………………………(10分)由ln20.6931≈,e 2.71828≈知,eln 204-<, 故e2a >成立. …………………………………………………………(12分)22.(本小题满分12分)解:(1)设0(0)A x ,,0(0)B y ,,()P x y ,, 由2BP PA =,得00()2()x y y x x y -=--,,, …………………………(2分)即000032()223x x x x x y y y y y ⎧=-=⎧⎪⇒⎨⎨-=-⎩⎪=⎩,,,………………………………………………(4分)又因为2209x y +=,所以223(3)92x y ⎛⎫+= ⎪⎝⎭,化简得2214x y +=,这就是点P 的轨迹方程.………………………………………………………………(6分)(2)当过点(10),的直线为0y =时, (20)(20)4OM ON =-=-,,,当过点(10),的直线不为0y =时,可设为1x ty =+,11()M x y ,,22()N x y ,, 联立22141x y x ty ⎧+=⎪⎨⎪=+⎩,,化简得22(4)230t y ty ++-=,…………………………………………………………(8分)由韦达定理得12224t y y t +=-+,12234y y t =-+, 12221212(1)(1)OM ON x x y y ty ty y y =+=+++21212(1)()1t y y t y y =++++222223241(1)1444t t t t t t t ---+=+++=+++2224(4)1717444t t t -++==-+++, 又由222412(4)16480t t t ∆=++=+>恒成立,得t ∈R ,……………………………………………………(10分)对于上式,当0t =时,max 1()4OM ON =, 综上所述,OM ON 的最大值为14. ………………………………(12分)。

西南名校联盟2020届高三上学期质量监测语文答案

西南名校联盟2020届高三上学期质量监测语文答案

2020届高考适应性月考卷(一)语文参考答案1.(3分)A 【解析】B项,由第二段“如果我们能够在深入了解不同文化精神基础上,坚持跨文化对话、坚持多元文化视野中自身文化精神的建设,实现中国文艺创作突破和创新,前景可期”可知是在假设的情况之下,同时即使是假设也只是有望实现。

C项,由第四段“缺乏有力的理论体系作为支撑,以形式语言反形式语言,往往热闹一阵之后就没有了下文。

没有理论支撑,很难实现建筑创作真正意义上的发展”可知“缺乏有力的理论体系”“没有理论”程度不同,所以结果不能混淆。

D项,由第六段“建构自己的以哲学和美学思想为基础的理论体系”可知构建的是“以哲学和美学思想为基础”的理论体系,而不是“哲学和美学思想的理论体系”。

2.(3分)C 【解析】对原句“中国建筑不能作他者嫁接的枝条”的误解,原句是指中国建筑要有自己的建筑理论,而不是在他国的理论基础上,增添中国特色。

3.(3分)B 【解析】“建筑设计停留在形式、语言层面上,设计方案理念与实际脱节,摆脱对流行理念的模仿,追求夸张和新奇”是一些建筑师存在的问题。

4.(3分)A 【解析】“对直播答题平台增加包场式广告赞助商产生反感……卸载过直播答题APP”错误,用户卸载直播答题APP的原因会有很多,平台增加包场式广告赞助商产生反感只能是其中一种,但不是全部,所以卸载直播答题APP的用户不能全是因为“反感”使然。

5.(3分)B 【解析】A项,“即答即提现的高效性”未必能让直播答题APP用户继续使用该程序。

C项,“这些知识错误使相关部门对直播进行监管”有误,从材料三可以看出,相关部门对直播进行监管除了题目出现知识错误外,还有传播的思想、开办直播答题的资格和主持人业务素质等诸方面。

D项,“专业主持人”错误,从材料三可以看出,“合规”的“规”就是《信息网络传播视听节目许可证》,专业主持人不是规定要求的,同时“通知”要求主持人有“良好的业务素质”,而不是“专业主持人”。

等西南四省八校2020届高三数学9月份联考试题文(含解析)

等西南四省八校2020届高三数学9月份联考试题文(含解析)

等西南四省八校2020届高三数学9月份联考试题文(含解析)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,再选凃其它答案标号。

回答非选择题时,将答案在答题卡上,写在本试卷上无效。

3.考试结束后,将木试卷和答题卡一并交回。

一、选择题:本题共12小题,每小题5分,共60分。

在每小题给出的四个选项中,只有一个选项是符合题目要求的。

1.设集合,,则()A. B. C. D.【答案】B【解析】【分析】根据并集的定义写出A∪B.【详解】集合A={0,1},B={﹣1,0},则A∪B={﹣1,0,1}.故选:B.【点睛】本题考查了并集的概念及列举法表示集合的形式,是基础题.2.()A. B. C. D.【答案】A【解析】【分析】把复数乘积展开,化简为a+bi(a、b∈R)的形式,可以判断选项.【详解】∵(1+3i)(1-i)=1+3+3i-i=4+2i故选:A.【点睛】本题考查复数代数形式运算,是基础题.3.设,则“”是“”的()A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分也不必要条件【答案】A【解析】【分析】求出不等式的等价形式,结合充分条件和必要条件的定义进行判断即可.【详解】由2x<1得x<0,由“x3<1”得x<1,x<0是x<1的充分不必要条件则“2x<1”是“x3<1”的充分不必要条件,故选:A.【点睛】本题主要考查充分条件和必要条件的判断,结合不等式的关系是解决本题的关键.4.已知命题:,,则是()A. ,B. ,C. ,D. ,【答案】D【解析】【分析】根据全称命题的否定方法,结合已知中的原命题,可得答案.【详解】∵命题p:∀x>0,总有lgx>0,∴命题¬p为:∃x0>0,使得lgx0≤0,故选:D.【点睛】本题考查了命题的否定,考查了推理能力,属于基础题.5.在等差数列中,,,则的前6项和为()A. 6B. 9C. 10D. 11【答案】B【解析】【分析】利用等差数列{an}通项公式列方程组求出a1,d,由此能求出{an}的前6项和.【详解】∵在等差数列{an}中,a5,a2+a4=2,∴,解得a1,d,∴{an}的前6项和S6的值:615×1.故选B.【点睛】本题考查等差数列的前n项和的公式,考查等差数列的通项公式的应用,考查运算求解能力,是基础题.6.若,,,则最小值为()A. B. 4 C. D. 6【答案】B【解析】【分析】由a+2b≥2,可得a+2b的最小值.【详解】∵a>0,b>0,ab=2,∴a+2b≥2,当且仅当a=2b=2时取等号,∴a+2b的最小值为4.故选:B.【点睛】本题考查了基本不等式的应用,关键是等号成立的条件,属基础题.7.如图是函数的部分图像,若,则()A. -1B. 1C.D.【答案】D【分析】由图可设A(a,),则B(a,),可得(,),利用向量模的坐标运算,求得T4,从而可得ω的值,代入x=-1计算可得结果.【详解】设A(a,),函数f(x)sin(ωx+)的周期为T,则B(a,),∴(,),∵|AB|212=16,∴T2=16,∴T4,解得:ω.∴f(x)sin(x+),∴f(-1),故选:D.【点睛】本题考查函数y=Asin(ωx+φ)的图象解析式的确定及应用,涉及向量模的坐标运算及其应用,属于中档题.8.在区间内任取一个实数,设,则函数的图像与轴有公共点的概率等于()A. B. C. D.【答案】D【分析】利用f(x)=﹣x2+mx+m的图象与x轴有公共点,可得m﹣4或m0,根据在[﹣6,9]内任取一个实数m,以长度为测度,可求概率.【详解】∵f(x)=﹣x2+mx+m的图象与x轴有公共点,∴△=m2+4m0,∴m﹣4或m0,∴在[﹣6,9]内任取一个实数m,函数f(x)的图象与x轴有公共点的概率等于.故选:D.【点睛】本题考查概率的计算,确定以长度为测度是关键,是基础题.9.已知是定义在上的奇函数,且在上是减函数,,则满足的实数的取值范围是()A. B. C. D.【答案】C【解析】【分析】根据题意,由函数奇偶性的性质可得f(﹣1)的值,结合函数的单调性分析可得,解可得x的取值范围.【详解】根据题意,函数f(x)是R上的奇函数,若f(1)=﹣2,则f(﹣1)=﹣f(1)=2,则,又由函数在上为减函数,则有,解可得:,即x的取值范围是(-2,2);故选:C.【点睛】本题考查函数的奇偶性与单调性的综合应用,得出f (﹣1)=2是关键.10.直线分别与轴,轴交于,两点,点在圆上,则面积的取值范围是A. B. C. D.【答案】A【解析】分析:先求出A,B两点坐标得到再计算圆心到直线距离,得到点P到直线距离范围,由面积公式计算即可详解:直线分别与轴,轴交于,两点,则点P在圆上圆心为(2,0),则圆心到直线距离故点P到直线的距离的范围为则故答案选A.点睛:本题主要考查直线与圆,考查了点到直线的距离公式,三角形的面积公式,属于中档题。

四川省仁寿一中等西南四省八校2020届高三9月份联考试题英语试题及参考答案

四川省仁寿一中等西南四省八校2020届高三9月份联考试题英语试题及参考答案

百校联盟2020届高三七月尖子生联考英语试题2019.9 注意事项:1. 本试卷由四个部分组成。

其中第一、二部分和第三部分的第一节为选择题。

第三部分的第二节和第四部分为非选择题。

共150分,共12页。

2. 全部答案在答题卡上相应区域内完成,在本试卷上作答无效。

选择题请使用2B铅笔填涂,非选择题请使用0.5毫米黑色签字笔作答。

要求字体工整、笔迹清晰。

3. 请在答题卡规定的地方填写好个人信息,并认真核对答题卡上所粘贴的条形码是否与本人的信息一致。

4. 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,并标在试卷的相应位置。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Who taught the woman how to cook?A. Her mother.B. Her father.C. The man.2. When will the man probably meet Dr. Brown?A. On Monday.B. On Wednesday.C. On Friday.3. Which club might the man join?A. The cinema club.B. The music club.C. The tennis club.4. What’s the woman doing?A. Waiting for her friends.B. Listening to music.C. Having some coffee.5. What does the woman imply?A. The man has a weak heart.B. The man is overweight.C. The man has given up drinking.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,每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

西南名校联盟2020届高考适应性月考卷(一)理综物理Word版含解析

西南名校联盟2020届高考适应性月考卷(一)理综物理Word版含解析

2020届高考适应性月考卷(一)物理注意事项:1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案标号。

回答非选择题时,将答案写在答题卡上,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。

二、选择题:本题共8小题,每小题6分,共48分。

在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。

全部选对的得6分,选对但不全的得3分,有选错的得0分。

14.1934年,约里奥—居里夫妇用α粒子轰击2713Al ,发现了放射性磷3015P 和另一种粒子,并因这一伟大发现而获得诺贝尔物理学奖。

关于该反应下列说法中正确的是A.该反应的方程式为274301132150Al+He P n →+ B.反应物α具有很强的穿透能力,但电离本领较弱C.该反应能放出大量的热,核电站常利用该反应来发电D.生成的3015P 和自然界天然的3115P 一样,可作示踪原子15.如图所示,平行板电容器两极板水平放置,与电源、开关S 、定值电阻R 1、光敏电阻R 2连接成电路。

当开关S 闭合,无光照射光敏电阻R 2时,一带电液滴恰好静止在电容器两板间的M 点。

当用强光照射光敏电阻R 2时,光敏电阻的阻值变小,则A.液滴向下运动B.液滴带正电C.电源的输出功率一定增大D.电容器两极板间电压变大16.如图所示,发射卫星时,火箭将卫星送到A 点,卫星在椭圆轨道1上运行。

该卫星通过A 点时改变速度,沿轨道2做椭圆运动。

下列说法正确的是A.卫星在轨道1上A点点火减速,才能变轨到轨道2B.卫星在轨道1上经过A点的加速度等于在轨道2上经过A点的加速度C.卫星在轨道1和轨道2上的运行周期相同D.火箭将卫星发射到轨道1的发射速度可能小于7.9km/s17.如图甲所示,a、b是一条竖直电场线上的两点,一带正电的粒子从a运动到b的速度—时间图象如图乙所示,则下列判断正确的是A.b点的电场方向为竖直向下B.a点的电场强度比b点的大C.粒子从a到b的过程中电势能先减小后增大D.粒子从a到b的过程中机械能先增大后减小18.甲、乙两物体运动的v-t图象分别如图中a、b所示,其中a是关于(t0,v0)对称的曲线,b为过原点的直线,则下列说法正确的是A.0~t0时间内,甲的平均速度等于v0B.0~2 t0时间内,甲的平均速度等于v0C.0~t 0时间内任意时刻甲的加速度都比乙大D.0~2 t 0时间内,甲先加速后减速19.如图所示是研究光电效应的电路图,对于某金属用绿光照射时,电流表指针发生偏转。

2019-2020年高三上学期八校联考语文试题 含答案

2019-2020年高三上学期八校联考语文试题 含答案

2019-2020年高三上学期八校联考语文试题含答案说明:本试卷分第Ⅰ卷(选择题)和第Ⅱ卷两部分,共150分,考试用时150分钟。

第Ⅰ卷的答案涂在答题卡上,第Ⅱ卷答在答题纸上,答在试卷上无效。

第Ⅰ卷注意事项:1.每小题选出答案后,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。

2.本卷共12小题,每小题3分,共36分。

在每题给出的四个选项中,只有一项符合题目要求。

一、(15分)1.下列词语中加点字的读音,全都正确的一组是( )A、扒.(bā)手行.(háng)伍尽.(jǐn)管扺.(zhǐ)掌而谈B、岑.(cén)寂不啻.(chì)和.(huó)泥甘冒不韪. (wéi)C、解剖.(pāo)蝙.蝠 (biǎn ) 倾轧.(yà)铩.羽而归(shā)D、巨擘.(bò)河蚌.(bàng)关节.(jié)莘.莘学子(shēn)2.下列词语中没有错别字的一组是()A、沧桑白内障一诺千金一塌糊涂B、告磬吊胃口大有稗益拾人牙慧C、蜇伏金刚钻平心而论寥若晨星D、奖掖势力眼砰然心动集思广议3.在下面一段话空缺处依次填入词语,最恰当的一组是( )“蓝翔”已经和“土豪”等词语一样,成了某种文化的象征。

“蓝翔”两个字早已不再是蓝翔成了类似“高深莫测,咋咋呼呼”的。

A.爆发名声大噪演绎含意B.爆发名声大噪演化含义C.暴发声名鹊起演化含意D.暴发声名鹊起演绎含义4. 下列各句中,没有语病的一项是( )A、想让城市变得得文明,靠的是专业的管理、高效的组织、科学的协调、连贯性的政策取得的,而非短时间的突击、会战,更不是将不好的东西遮掩藏匿。

B、在雾天,饮食时应选择清淡、易消化且富含维生素的食物,多饮水,多吃新鲜蔬菜和水果,这样不仅可以补充各种维生素和无机盐,还能起到润肺除燥、健脾补肾的作用。

C、陈寅恪先生的这番话,不仅是对像王国维先生这样的历史文化人物的忧伤,而且是对整个文化精神的忧伤,更是对一种即将衰落的文化的忧伤。

2020届四川省仁寿一中等西南四省八校高三9月份联考试题英语试题 (解析版)

2020届四川省仁寿一中等西南四省八校高三9月份联考试题英语试题  (解析版)

2019—2020年度“四省八校联盟”高三联考英语试题注意事项:1. 本试卷由四个部分组成。

其中第一、二部分和第三部分的第一节为选择题。

第三部分的第二节和第四部分为非选择题。

共150分,共12页。

2. 全部答案在答题卡上相应区域内完成,在本试卷上作答无效。

选择题请使用2B铅笔填涂,非选择题请使用0.5毫米黑色签字笔作答。

要求字体工整、笔迹清晰。

3. 请在答题卡规定的地方填写好个人信息,并认真核对答题卡上所粘贴的条形码是否与本人的信息一致。

4. 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,并标在试卷的相应位置。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Who taught the woman how to cook?A. Her mother.B. Her father.C. The man. 2. When will the man probably meet Dr. Brown? A. On Monday. B. On Wednesday. C. On Friday. 3. Which club might the man join? A. The cinema club. B. The music club. C. The tennis club. 4. What’s the woman doing?A. Waiting for her friends. B. Listening to music. C. Having some coffee. 5. What does the woman imply? A. The man has a weak heart. B. The man is overweight.C. The man has given up drinking.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,每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

四川省西南四省八校2019-2020学年高三上学期9月联考物理试题(仁寿一中等)及答案解析

四川省西南四省八校2019-2020学年高三上学期9月联考物理试题(仁寿一中等)及答案解析

四川省西南四省八校2019-2020学年高三上学期9月联考物理试题注意事项:1.答题前填写好自己的姓名、班级、考号等信息;2.请将答案正确填写在答题卡上。

第I卷(选择题)一、单选题1.根据速度定义式svt,当t极短时,st就可以表示物体在t时刻的瞬时速度,该定义应用了下列物理方法中的()A.控制变量法B.假设法C.微元法D.极限法2.对下列课本插图描述错误..的是()A.利用图甲装置可以间接观察桌面的形变,用到了微量放大法B.图乙中蚂蚁从A点到B点的位移大小为0.5米,方向为东偏南30°,由于横纵坐标没有标度,所以不能确定末位置B的准确坐标C.利用图丙装置探究小车的加速度与拉力的关系时,运用控制变量法和比较法而设计夹子来控制两小车有相同的运动时间,从而得到两小车的加速度大小关系D.利用图丁装置可以研究平抛运动的竖直分运动,可以观察到两球同时落地,初步说明平抛运动的竖直分运动为自由落体运动3.如图,在倾角为30°的光滑斜面上,质量为m的小车受到沿斜面向下的恒力F的作用而下滑,在下滑过程中,要使连接着小球(质量为m)的轻绳恰好水平,则恒力F的大小为()A.3mgB.C.2mgD.0.5mg4.如图甲,小球用不可伸长的轻绳连接绕定点O在竖直面内圆周运动,小球经过最高点的速度大小为v,此时绳子拉力大小为F,拉力F与速度的平方2v的关系如图乙所示,图象中的数据a和b以及重力加速度g都为已知量,以下说法正确的是()A.数据a与小球的质量有关B.数据b与小球的质量无关C.比值ba只与小球的质量有关,与圆周轨道半径无关D.利用数据a、b和g能够求出小球的质量和圆周轨道半径二、多选题5.发射卫星的过程可以简化成如图所示的情景:为节约能源,卫星发射到较低圆轨道Ⅰ上,然后再A点瞬间点火使卫星进入椭圆轨道Ⅱ,在椭圆轨道的远地点B点再次瞬间点火让卫星进入更高的轨道Ⅲ作周期与地球自转周期相同的匀速圆周运动,整个过程不计空气阻力。

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绝密★启用前
西南四省八校名校联盟
2020届高三年级上学期高考适应性月考卷(一)
文综-政治试题
(解析版)
2019年9月注意事项:
1.答题前填写好自己的姓名、班级、考号等信息。

2.请将答案正确填写在答题卡上。

1.甲国A商品的价格2018年为100元,2019年与2018年同期相比,全社会商品供给数量增加10%,货币流通速度加快15%,在其他条件不变的情况下,引发了A商品价格的变动,这一变动对A商品需求的影响可表示为( )
A. B. C. D.
【答案】B
【解析】
【详解】B:流通中所需货币量=待售商品价格总额÷货币流通速度。

设2018年流通中所需货币量为100元,待售商品价格总额为100元,货币流通速度为1。

根据题意“不考虑其它因素”,即2019年流通中所需货币量不变,为100元。

设2019年价格为X,100=100×(1+10%)×X÷(1+15%),X约为104.5元。

因此A商品的价格上涨,价格影响需求,需求减少,B符合题意。

ACD:ACD均表示需求增加,与题意不符。

故本题选B。

【点睛】流通中所需要的货币量=(待售商品量×商品价格水平)÷货币流通次数。

(货币流通规律:流通中需要的货币量与商品价格总额成正比,与货币流通速度成反比。


2.“蚂蚁花呗”是一款网上消费信贷产品,申请开通后将获得500-50000元不等的消费额度,
使用者可享受“先消费,后付款”的购物体验。

2018年5月18日,“花呗”宣布向银行等金融机构开放。

业内人士认为银行等金融机构有资本风控经验,“花呗”有消费市场、风控数据,双方各有所长,互为补充。

可见发展类似的消费金融产品( )
①将有利于提高居民
的消费水平和消费能力②有助于商业银行开辟中间业务连接零售市场③将带动贷款消费,“花明天的钱,圆今天的梦”④需要政府规范互联网及金融企业的经营行为A. ①② B. ①④ C. ②③ D. ③④
【答案】C
【解析】
【详解】②③:从材料可以看出,发展“蚂蚁花呗”类似的消费金融产品有助于商业银行开辟中间业务连接零售市场,将带动贷款消费,“花明天的钱,圆今大的梦”,②③符合题意。

①:发展“蚂蚁花呗”类似的消费金融产品将带动贷款消费,可能会暂时提高居民的消费能力和消费水平,但由于是贷款消费,受未来收入、还贷能力等因素的影响,不一定能提高居民的消费水平和消费能力,①说法错误。

④:材料不体现互联网及金融企业的经营有违法行为,不涉及政府的规范,④与题意不符。

故本题选C。

【点睛】贷款消费:
(1)含义:是指消费者向银行和其他金融机构借款,用于购买住房、汽车等耐用消费品或教育、医疗、旅游等消费性支出的一种形式。

(2)特点:① 以信用为基础,消费者与贷款的金融机构形成信贷关系,按照约定到期还贷付息。

② 主要用于购买大件耐用消费品以及大额服务。

(3)贷款消费的作用:①、从消费者个人的角度讲,它能满足消费者的生活需要,提高生活质量。

②、从社会经济角度讲,贷款消费能促进生产,推动经济的发展,拉动经济增长,并且对提高社会的信用意识、法制观念有积极的作用。

(4)注意的问题:在贷款消费时要注意诚实信用,及时还贷,理性消费,不铺张浪费,量入为出,适度消费。

3.加拿大经济学家迈克尔*帕金提出的挤进效应”是指政府采用扩张性财政政策时,能够诱导民间消费和投资的增加,从而带动产出总量或就业总量增加的效应。

下列能够产生“挤进效。

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