【全国百强校】湖北省武汉市华中师范大学第一附属中学2018-2019学年高二下学期期中考试化学试题

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湖北省武汉市华中师范大学第一附属中学2018-2019学年高二下学期期中考试语文试题(解析版)

湖北省武汉市华中师范大学第一附属中学2018-2019学年高二下学期期中考试语文试题(解析版)

华中师大一附中2018—2019学年度下学期期中检测高二年级语文试题一、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,完成各题。

①艺术欣赏最好“单课独进”。

因为艺术鉴赏力是“由于反复的经验而获得的敏捷性”(狄德罗《绘画论》),所以,“要想提高或改善这方面的能力,最好的办法莫过于在一门特定的艺术领域里不断训练、不断观察和鉴赏一种特定类型的美”(休谟《论艺术趣味的标准》)。

②欣赏艺术要从感知入门,而感知的能力则必须围绕同类对象“反复经验”,才会提高。

炼钢工人善辨钢焰,制陶工人善辨陶音,就是因为反复训练。

与之相同,任何艺术都以其特定形式所表现的感性形象而作用于人的特定感官,所以也必须反复训练,其感知才能准确。

另外,对艺术保持持续关注和有效思索,同样会使自己的生活充满艺术的活力。

不过,如果不是因为兴趣的导向,强制某个人“单课独进”,效果会适得其反。

③“单课独进”是需要费一点时日的,在此期间不要东张西望见异思迁。

然而一旦养成了较为精细准确的感知能力,“东张西望”“见异思迁”反而能更好地促进“举一反三”,使欣赏者达到更高的境界,这种现象甚至被人夸张地称为“一通百通”。

看懂优秀京剧演员的动作之美,也有助于感受其他舞蹈乃至体操动作的质量。

若再能从京剧舞蹈中抽象出洗练、矫健而富有生机的线条与节奏,那还有助于感受书法、篆刻、绘画、雕塑的线条质量。

倘若再借助通感的运用,那么对线条节奏的感受能力还有助于理解音乐。

音乐难道也有线条?是的,对于一个有较强通感的人来说,旋律就是“声音的线条”,它同样也有一个干净漂亮的问题。

当然,要“一通百通”到这种地步很不容易,有人唱了一辈子戏,唱功做派身眼手法炉火纯青,但你叫他将其写下来却依然为难,还是存在一些障碍,这涉及各种艺术门类之间的贯通,需要在对各种艺术门类界限有深刻理解的基础上尝试一些突破。

就像一个音乐家试着用一些文学欣赏的技巧去解释一部作品,一个诗人需要用小说的笔法去让自己的诗歌更贴近生活。

湖北省武汉市华中师范大学第一附属中学2018-2019学年高二上学期期中检测数学(理)试题

湖北省武汉市华中师范大学第一附属中学2018-2019学年高二上学期期中检测数学(理)试题

B. ( 1 ,0) 2
C. (0, 1 ) 4
2.设 x, y 满足约束条件
x 2y 3 0 x y 1 0 ,则 z y1
3x 4 y 的最大值为
D. (0, 1 ) 8
A.4
B.5
C.6
D.7
3.点 M 的直角坐标为 ( 2, 2 3) ,则点 M 的一个极坐标为
A. (4, π) 6
B. (4, π) 3
②当 t 4或 t 1 时,曲线 C 一定是双曲线;
③若曲线 C 是焦点在 x 轴上的椭圆,则 1 t 5 ; 2
④若曲线 C 是焦点在 y 轴上的双曲线,则 t 4 .
A.1
B.2
C.3
D.4
8.已知直线 3 x
4y
4
0 与圆 M: x 2
y2
2ax
0 (a
0) 相切,则圆
2
M 和圆 N:(x- 1) +( y-
C. (4, 7 π) 6
D. (4, 4 π) 3
4.已知圆 C1 : x 2 y 2 2x 4y 4 0 与圆 C2 : x2 y 2 4x 10y 4 0 相交于 A、 B 两点,则线
段 AB 的垂直平分线的方程为 [来源学。科。网 ]
x y30 A.
B. x y 3 0
C. 3x 3 y 4 0 错 误 ! 未 找 到 引 用 源 。
且 | AB | 2 3 错误!未找到引用源。 ,则直线 l 的方程为
A. 4 x 3 y 2 0
B. 4 x 3 y 2 0 或 x 2
C. 4 x 3 y 2 0 或 y 2
D. x 2 或 y 2
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7.已知方程 x

【全国百强校】湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试生物试题(解析版)

【全国百强校】湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试生物试题(解析版)

华中师大一附中2018—2019学年度上学期期末考试高二年级生物试题1.下列关于科学家及其成就的叙述,正确的是A. 孟德尔通过假说一演绎法发现了等位基因和非等位基因在亲子代之间传递的规律B. 道尔顿发现并证明了色盲的遗传方式为伴性遗传C. 萨顿采用类比推理的方法证明了基因在染色体上D. 沃森和克里克构建的DNA分子双螺旋结构模型属于物理模型.【答案】D【解析】【分析】假说一演绎法:在观察和分析基础上提出问题以后,通过推理和想像提出解释问题的假说,根据假说进行演绎推理,再通过实验检验演绎推理的结论。

如果实验结果与预期结论相符,就证明假说是正确的,反之,则说明假说是错误的。

这是现代科学研究中常用的一种科学方法,叫做假说-演绎法。

类比推理法:类比推理指是根据两个或两类对象在某些属性上相同,推断出它们在另外的属性上(这一属性已为类比的一个对象所具有,另一个类比的对象那里尚未发现)也相同的一种推理。

【详解】孟德尔所在的年代还没有基因一词,因此其并没有发现等位基因和非等位基因在亲子代之间传递的规律,A错误;道尔顿是第一个提出色盲问题的人,但他并没有发现并证明色盲的遗传方式为伴性遗传,B错误;萨顿采用类比推理的方法提出了基因在染色体上的假说,摩尔根利用假说演绎法证明了基因在染色体上,C错误;沃森和克里克构建的DNA分子双螺旋结构模型属于物理模型,D正确。

故选D。

2.下图是某二倍体动物(XY性别决定)体内一个正在分裂的细胞,有关叙述错误的是A. 该细胞正处于减数第二次分裂中期B. 该细胞下一时期每条染色体上DNA数为1C. 该细胞的DNA分子数不止8个D. d基因控制的性状在雌性和雄性中出现的概率不同【答案】A【解析】【分析】图示中含有A、a和B、b两对等位基因,说明存在同源染色体,则该细胞为有丝分裂中期图像,则d所在染色体与另一条不含基因的染色体为另一对同源染色体,根据这对染色体的形态不同,可知为XY同源染色体。

华中师范大学第一附属中学2018-2019学年高二上学期期末考试物理答案

华中师范大学第一附属中学2018-2019学年高二上学期期末考试物理答案

解得 G1 4.2N
若当重物的重力为 G2 时,导体棒即将向左运动,则导体棒受到的摩擦力 f 2 水平向右, 由受力平衡可得 f 2 G2 F安 cos30
f 2 m g F安 sin 30
--------------2 分 ---------------1 分 ---------------1 分
则, t0
这阶段的焦耳热 Q2
2 E2 t 2 t1 2J R
----------------------------1 分 ----------------------1 分
所以 0 4s 时间内整个线圈所产生的焦耳热 Q Q1 Q2 2.75J
y 4 d 3

---------------------------3 分 ----------------------------1 分
16.(14 分) (1)由图可知,设 B1 1T , B2 3T , t1 3s , t 2 4s 线圈进入磁场的过程中只有 bc 边的上部分切割磁感线 则,感应电动势 E1 B1vx 1.5V ab 边的电阻 Rab
解得 G1 1.8N 所以重物的重力 G 的取值范围是: 1.8N G 4.2N
15.(12 分) (1)无论沿哪个方向发射粒子,从开始发射到这些粒子刚进入磁场时,洛仑兹力不做功, 电场力做功是一样的,设刚进入磁场时的速度大小为 v ,则由动能定理可得
1 2 1 2 3 2 m v m v0 Eqd m v0 2 2 2
---------------------------3 分 ----------------------------1 分
化简可得 v 2v0

【国家百强校】2018-2019学年湖北省华中师范大学第一附属中学高二上学期期末考试英语试题 Word版

【国家百强校】2018-2019学年湖北省华中师范大学第一附属中学高二上学期期末考试英语试题 Word版

华中师大一附中2018—2019学年度上学期期末考试高二年级英语试题时间:120分钟满分:150分第一部分:听力(共两节,满分30分)做题时,先将答案划在试卷上。

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. Which evening dress does the man advise the woman to wear?A. The pink one.B. The white one.C. The blue one.2. What is the third class?A. Chinese..B. Chemistry.C. English.3. Why couldn’t the woman get through to the man last night?A. The line was busy.B. His phone was out of service.C. Something was wrong with his phone.4. What day is best to go rock-climbing for the speakers?A. Monday.B. Saturday.C. Sunday.5. What does the man want to do?A. Buy something in the supermarket.B. See the price of a house.C. Go to the bakery.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。

湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试英语试卷Word版含解析

湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试英语试卷Word版含解析

高二上学期期末考试英语注意事项:1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。

2.选择题的作答: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,写在试题卷、草稿纸和答题卡上的非答题区域均无效。

3.非选择题的作答: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均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

第I卷(选择题)一、阅读理解Temples have existed for thousands of years. They are the proof of cultures and civilization that existed many years ago.Gobekli Tepe, TurkeyLocated on a hilltop in southwestern Turkey where it snows a lot in winter, the Gobekli Tepe is considered the world’s oldest temple. It is nearly 11,000 years old. There are carvings on the rock statues, mainly of lions, foxes, snakes, cranes and wild ducks, as well as scenes of people hunting. Because heavy snow makes it hard to get to the top of the hill, visitors are not recommended to go there in winters.White Temple, ThailandImmediately upon entering White Temple, you will realize this contemporary, unconventional temple stands out, even in a country dotted with temples. The White Temple is incredibly different and unique in its architecture, art and design. In fact, it is designed in a very modern way. This temple is all white. It is very hot in summer in Thailand, so going to White Temple in other three seasons is a wise choice.Sagrada Familia, SpainThis symbolic Barcelona building is famously unfinished. It is said to be finished by 2026, but no body believes it. However, visitors believe its incompleteness is part of its charm, which sets it apart from othertemples in the world. You will have to wait in a long line if you visit Sagrada Familia in summer holiday. Visitors are not that many in spring and winter.Kinkaku-ji, JapanThis temple is absolutely the most popular one in Japan. Whether you visit during the fall when there are red leaves against the golden wall, in winter when the gold is topped with pure white snow, in spring with cherry blossoms, or in summer allowing you to smell the earthy smell after rain – there is never a bad time to visit this beautiful temple.1.Which temple will you choose to go if you are a fan of modern architecture?A.Gobekli Tepe. B.White Temple.C.Sagrada Familia. D.Kinkaku-ji.2.What makes Sagrada Familia special according to the passage?A.It is unfinished. B.It is all white.C.It is the oldest temple. D.It is untraditional.3.Which temple is favorable to go all year round?A.Gobekli Tepe. B.White Temple.C.Sagrada Familia. D.Kinkaku-ji.Recently, many e-commerce platforms, including Didi Taxi, Ctrip, Fliggy, JD ad Taobao, have been uncovered that they are cheating their frequent customers. Their ways are pretty clever. When there are new users or conservative old users, they will give a quite appealing price to attract them into registering and buying goods. However, their big data is not that friendly to the stable users and frequent visitors. The system always offers them higher price for the same products or service. How does this happen? According to the data analysis, the system knows clearly that although they feel the price is high, they will finally pay the bill. By collecting and analyzing users’ profiles, buying habits and other information, big data recommends the same products to different users with different prices.Companies also try other ways to make money, making online consumption far more worrying. For ex ample, video websites always offer 120 seconds’ advertisements, which drives people crazy. And even if you pay for the membership to get rid of the ads, you have to “enjoy” 15-second “private” ads. By broadcasting them, companies make huge profits --- second to the membership fees. Also, owning 100Mbps network, you stillput up with the slow speed when you are downloading a song. You have no choice but to become a VIP when you seek high quality services. Users seem to be lambs(羊羔) among wolves. Even though they say,” Since you have money, I’ll charge you more”, we can’t do anything about it.It pains us that we haven’t figured out a way to deal with the problem. The only thing we can do is replacing our iPhones with Android phones if we want to buy a membership card, and applying for new accounts if we want cheaper hotels. Not finding a way to fight back, we can’t do anything but accept them passively.4.How does big data serve companies according to the text?A.By being kind to all users.B.By giving a discount to stable users.C.By attracting new users by analyzing their shopping habits.D.By recommending the same products with higher prices to regular users.5.What do we know from the third paragraph?A.Membership can rid you of all the ads.B.Only by being a VIP can you get a better service.C.The slow download speed is due to your poor network.D.Advertising income is the biggest income for video websites.6.What is the author’ attitude towards the chances of finding a way to fight back?A.Uncertain. B.Casual.C.Negative. D.Positive.7.What is the main idea of the text?A.The big data provides helpful information to users.B.We have to accept online consumption as it is.C.There exist many online consumption traps.D.Regular customers are richer.Antarctica(南极洲)’s melting ice, which has caused global sea levels to rise by at least 13.8 millimeters over the past 40 years, was thought to primarily come from the unstable West Antarctic Ice Sheet(WAIS). Now, scientists have found that the East Antarctic Ice Sheet (EAIS)—considered largely unaffected by climate change—may also be melting at an unexpectedly rapid speed.The WAIS, whose base is below sea level, has long been considered the most likely to break down. Besides gravity, a deep current of warm water slips beneath the sheet, melting it from below until it becomes a floating shelf at risk of breaking away. In contrast, extreme cold and a base mostly above sea level are thought to keep the EAIS relatively safe from warm waters.But as greenhouse gases warm much of the planet, driving stronger polar winds, some scientists think warm water carried by a circular current will start to invade East Antarctica’s once unassailable ice. A cooperation of more than 60 scientists last year, published in Nature, estimated that the EAIS actually added about 5 billion tons of ice each year from 1992 to 2017.Eric Rignot of the University of California, Irvine, and colleagues combined 40 years of satellite imagery and climate modeling and found that overall Antarctica now sends six times more ice into the sea each year than it did in 1979, with the majority coming from West Antarctica. But East Antarctica was responsible for more than 30% of Antarctica’s contribution to the 13.8-millimeter sea level rise over the past 40 years. “The more we look at this system the more we realize this is fragile,” Rignot says. “Once these glaciers become unstable there is no red button to press to stop it.”Rignot hopes the study brings greater attention to a part of Antarctica that has traditionally been understudied. Helen Fricker, a glaciologist (冰川学家) in California, agrees. “We need to monitor the entire Antarctica and we just can’t do that without international cooperation.”8.What is the new finding of scientists?A.The east Antarctica is losing ice at an increasing rate.B.The west Antarctica is melting six times faster than in 1979.C.5 billion tons of ice is added to Antarctica each year.D.The sea level has risen by 13.8 mm over the past 40 years.9.Which factor leads to the EAIS’s melting fast?A.A base mostly over sea level. B.The force of gravity.C.The invasion of a warm current. D.Extremely low temperature.10.Which of the following best explains “unassailable” underlined in Para. 3 ?A.Fragile. B.Unattackable.C.Mild. D.Unstable.11.Which way does Helen Fricker specially advocate?A.Satellite imagery. B.Global monitoring.C.Worldwide climate modeling. D.Worldwide combined efforts.Modern lifestyles are generally quite different from those of our hunter-gatherer ancestors, a fact that some claim as the cause of the current rise in global obesity, but new results published July 25 in the open access journal PLOS ONE find that there is no difference between the energy expenditure(耗费) of modern hunter-gatherers and Westerners, casting doubt on this theory.The research team behind the study, led by Herman Pontzer of Hunter College in New York City, along with David Raichlen of the University of Arizona and Brian M. Wood of Stanford measured daily energy expenditure among the Hadza, a population of traditional hunter-gatherers living in the open Savannah of northern Tanzania. Despite spending their days hiking long distances to seek for wild plants and game, the Hadza burned no more calories each day than adults in the U.S. and Europe. The team ran several analyses accounting for the effects of body weight, body fat percentage, age, and gender. In all analyses, daily energy expenditure among the Hadza hunter-gatherers was indistinguishable(难以区分的) from that of Westerners. The study was the first to measure energy expenditure in hunter-gatherers directly; previous studies had relied entirely on estimates.These findings overturn the long-held assumption that our hunter-gatherer ancestors expended more energy than modern populations, and challenge the view that obesity in Western populations results from decreased energy expenditure. Instead, the similarity in daily energy expenditure across a broad range of lifestyles suggests that habitual metabolic(新陈代谢的) rates are relatively constant among human populations. This in turn supports the view that the current rise in obesity is due to increased food consumption, not decreased energy expenditure. It means we have more to learn about human physiology(生理学) and health, particularly in non-Western settings."These results highlight the complexity of energy expenditure. It's not simply a function of physical activity," says Pontzer.” Our metabolic rates may be more a reflection of our shared evolutionary past than our diverse modern lifestyles."12.According to the new research, hunter-gatherers consume _________.A.the same energy as Westerners B.more energy than WesternersC.less energy than Westerners D.the same food as Westerners13.How did the research team do the new research?A.By comparing hiking distances. B.By identifying wild plants and game.C.By estimating daily energy expenditure. D.By measuring daily energy expenditure.14.People have long assumed that _________.A.the rise in obesity is due to increased food consumptionB.decreased energy expenditure makes Westerners fatC.daily energy expenditure stays the same in historyD.humans’ habitual metabolic rates are unchanged15.Which of the following can reflect our shared evolutionary past?A.Our physiology activity. B.Our energy expenditure.C.Our metabolic rates. D.Our modern lifestyle.二、七选五Why people collect artMany people through history have gone to great lengths to collect art. But what motivates these collectors?One popular explanation for collecting is that they can have financial gain. Some resell works, earning enormous profit. 16.. Immorally, some ‘collectors’ buy art as a form of money laundering(洗钱), since it is far easier to move art than cash between counties without examination.17.. For them, art is important for other reasons. The best way to understand the underlying drive of art collecting is as a means to create and strengthen social bonds, and as a way for collectors to communicate within these new networks.Collectors are not only interested in creating social links; they are also motivated by the messages they can send once these social networks are created. We all know art is a powerful way for the artist to express thoughts and feelings. 18.. Displaying art can send a message about who the collector really is --- at least who she sees herself as.19.. Through the collections, collectors convey messages not just about themselves, but about the world as a whole. For example, the kid with the shoebox of bird feathers might show others her collection not just to make friends, but also to convince them about the importance of protecting endangered species.People collect art for various reasons. 20..A.Some gain art works in an illegal wayB.But most collectors think little of profitC.Artworks preserve the qualities of their makersD.No doubt art collection is a hard addiction to overcomeE. Some get large tax reductions for donating art to museumsF. It also serves as an effective way to express collectorsG. Other art collectors see their collections as having a broader power三、完形填空My car needed some mechanical work that I could not do myself. Since the garage I had been taking my car to had __21__, my friend Dave gave me a recommendation: D's Auto Repair.I was pleasantly __22__ to discover that the owner of D's was a mechanic who had worked on my car several years earlier. __23__ he was an employee at a gas station near my house. I knew that his work was good.I ___24_ the paperwork for the repair and _25__ while D took a phone call from another customer. As I sat there, I looked around the small office to keep myself __26___ A framed newspaper article caught my attention. The headline _27___: "Local Dairy Farmer Kills Whole Herd.” The article was about the __28__ of a fifth-generation dairy farmer during the polluted milk scare in Michigan several years earlier. Dairy cows were becoming __29__ a disease that was affecting the milk supply. The fifth-generation dairy farmer paid to have all of his cows __30__. It was found that out of the entire herd, only a few were were infected. Because no one could __31__ that the other cows were totally __32__, he had the herd killed and buried to make consumers feel rest assured(放心). The farmer’s insurance did not cover his _33___ because the state had not issued a(n) __34__ for him to get rid of the herd. Asked why he did it, the farmer replied "Because it was the right thing to do.I asked D why he __35__ the article on the wall. I thought that he might be related to or __36__ knew the farmer. He said he had never met the man, but that the farmer was a(n) __37__ to him and set a standard for integrity(正直), trust and honesty. He said that is how he __38__ his auto Repair business.I was now doubly __39__ by both the farmer and D.The next year, __40__ my recommendation, my son started a nine-month mechanics apprenticeship(学徒) at D's Auto repair.21.A.closed B.started C.expanded D.developed22.A.content B.cautious C.surprised D.shocked23.A.Just then B.Back then C.In advance D.Before long24.A.filled out B.handed out C.held out D.took out25.A.stared B.reflected C.worried D.waited26.A.informed B.involved C.prepared D.occupied27.A.wrote B.read C.recorded D.shown28.A.plans B.feelings C.actions D.bravery29.A.immune to B.addicted to C.infected with D.allergic to30.A.tested B.killed C.buried D.sold31.A.suspect B.guarantee C.challenge D.question32.A.satisfying B.beneficial C.dangerous D.safe33.A.danger B.risk C.loss D.threat34.A.order B.warning C.ban D.solution35.A.stored B.displayed C.collected D.appreciated36.A.anywhere B.anyhow C.somewhere D.somehow37.A.inspiration B.companion C.comfort D.memory38.A.bought B.predicted C.operated D.acquired39.A.embarrassed B.impressed C.confused D.amused40.A.in B.by C.at D.on第II卷(非选择题)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。

湖北省武汉市华中师范大学第一附属中学2018-2019学年高二数学上学期期中检测试题 文

湖北省武汉市华中师范大学第一附属中学2018-2019学年高二数学上学期期中检测试题 文

华中师大一附中2018—2019学年度上学期期中检测高二年级数学文科试题时间:120分钟 满分:150分一、选择题:(本大题共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.抛物线22y x =的焦点坐标为 A .(1, 0)B .1(,0)2C .1(0,)4D .1(0,)82.点M的直角坐标为(2,--,则点M 的一个极坐标为 A .(4,)6πB .(4,)3πC .7(4,)6πD .4(4,)3π3.设,x y 满足约束条件230101x y x y y -+≥⎧⎪-+≥⎨⎪≥⎩,则34z x y =-+的最大值为A .4B .5C .6D .74.圆22:22430C x y ax y ++--=C 的圆心坐标可以是 A .3(,1)2-B .3(,1)2-C .(3,2)D .(3,2)-5.椭圆22:1259x y Γ+=与椭圆22:1(9)259x y k k k Φ+=<--的A .长轴长相等B .短轴长相等C .焦距相等D .离心率相等6.双曲线222C :1(0)16y x a a -=>A.B.C .8D .167.1p >时,双曲线22116x y p p -=-+的右焦点与抛物线22y px =的焦点重合,则抛物线的准线方 程是 A .5x =-B .10x =-C .5x =D .10x =8.已知方程22141x y t t +=--的曲线为C ,下面四个命题正确的个数是 ①当14t <<时,曲线C 不一定是椭圆; ②当41t t ><或时,曲线C 一定是双曲线; ③若曲线C 是焦点在x 轴上的椭圆,则512t <<;④若曲线C 是焦点在y 轴上的双曲线,则4t >. A .1B .2C .3D .49.已知椭圆22143x y C +=:的左,右焦点分别为1F ,2F ,P 是椭圆C 上的点,若△F 1PF 2为直角三角形,则这样的点P 有 A .8个B .6个C .4个D .2个10.抛物线28y x =的焦点为F ,M 为抛物线上一点,O 为坐标原点。

湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试数学(理)试题

湖北省华中师范大学第一附属中学2018-2019学年高二上学期期末考试数学(理)试题

华中师大一附中2018—2019学年度上学期期末考试高二年级数学(理科)试题时间:120分钟满分:150分★祝考试顺利★ 注意事项:1、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。

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一、选择题:(本大题共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.用秦九韶算法求多项式542()2253f x x x x x =-+++当3x =的值时,02,v =15v =,则2v 的值是 A.2B.1C.15D.172.某宠物商店对30只宠物狗的体重(单位:千克)作了测量,并根据所得数据画出了频率分布直方图如下图所示,则这30只宠物狗体重(单位:千克)的平均值大约为 A.15.5 B.15.6 C.15.7D.163.若方程12348x x x x +++=,其中22x =,则方程的正整数解的个数为 A.10B.15C.20D.304.过(2,1)作圆223x y +=的切线,切点分别为,A B ,且直线AB 过双曲线2221(0)2x y a a-=>的右焦点,则双曲线的渐近线方程为A.2y x =±B.y =±C.y x =D.y = 5.给出下列结论:(1)某学校从编号依次为001,002,…,900的900个学生中用系统抽样的方法抽取一个样本,已知样本中有两个相邻的编号分别为053,098,则样本中最大的编号为862. (2)甲组数据的方差为5,乙组数据为5、6、9、10、5,那么这两组数据中较稳定的是甲. (3)若两个变量的线性相关性越强,则相关系数r 的值越接近于1.(4)对A 、B 、C 三种个体按3:1:2的比例进行分层抽样调查,若抽取的A 种个体有15个,则样本容量为30. 则正确的个数是 A.3B.2C.1D.06.已知,x y 是0~1之间的两个均匀随机数,则“,,1x y 能构成钝角三角形三边”的概率为 A.24π- B.44π- C.43π- D.23π-7.已知实数,x y 满足33011101x x y x y y ⎧≤≤⎪⎪-≥-⎨⎪⎪≤≤⎩,则121y x --的取值范围是A.(-∞,0]∪(1,+∞)B.(-∞,0]∪[1,+∞)C.(-∞,0]∪[2,+∞)D.(-∞,0]∪(2,+∞) 8.在二项式n 的展开式中,当且仅当第5项的二项式系数最大,则系数最小的项是A.第6项B.第5项C.第4项D.第3项9.已知椭圆2222:1(0)x y C a b a b +=>>的左、右焦点分别为12,F F ,过1F 的直线与椭圆C 交于,M N 两点,若21225MNF MF F S S ∆∆=且2121F F N F NF ∠=∠,则椭圆C 的离心率为 A.25C.3510.将一颗质地均匀的骰子先后抛掷三次,则数字之和能被3整除的概率为 A.13B.14C.536D.1511.在右侧程序框图中,若输入的a b 、分别为18、100,输出的a 的值为m,则二项式342()(1)x x x+⋅-的展开式中的常数项是 A.224 B.336 C.112 D.56012.如右图,已知12,F F 分别为双曲线22:1412x y C -=的左、右焦点,过2F 的直线与双曲线C 的右支交于,P Q 两点,且点A 、B 分别为1212,PF F QF F ∆∆的内心,则||AB 的取值范围是A.[4,+)∞B.[5,6)C.[4,6)D.二、填空题(本大题共4小题,每小题5分,共20分.)13.向正方形随机撒一些豆子,经查数,落在正方形内的豆子的总数为1000,其中有780粒豆子落在该正方形的内切圆内,以此估计圆周率π的值(用分数表示)为____________. 14.右图是华师一附中数学讲故事大赛7位评委给某位学生的表演打出的分数的茎叶图.记分员在去掉一个最高分和一个最低分后,算得平均分为91分,复核员在复核时,发现有一个数字(茎叶图中的x )无法看清,若记分员计算无误,则数字x 应该是____________.15.将1,2,3,,,a b c 排成一排,则字母a 不在两端,且三个数字中有且只有两个数字相邻的概率是____________.16.已知圆22()9(5)x a y a -+=>上存在点M ,使||2||OM MQ =(O 为原点)成立,(2,0)Q ,则实数a 的取值范围是____________.三、解答题:(本大题共6小题,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12分)为了解华师一附中学生喜欢吃辣是否与性别有关,调研部(共10人)分三组对高中三个年级的学生进行调查,每个年级至少派3个人进行调查.(1)求调研部的甲、乙两人都被派到高一年级进行调查的概率.(2)调研部对三个年级共100人进行了调查,得到如下的列联表,请将列联表补充完整,并判断是否有99.9%以上的把握认为喜欢吃辣与性别参考公式:22()()()()()n ad bc K a b c d a c b d -=++++, 其中n a b c d =+++有关?参考数据:18.(本小题满分12分)已知n ∈N *,12323192n nn n n C C C nC +++⋅⋅⋅+=,且2012(32)n n n x a a x a x a x -=+++⋅⋅⋅+.求:(1)展开式中各项的二项式系数之和;(2)0246a a a a +++;(3)01||||||n a a a ++⋅⋅⋅+.19.(本小题满分12分)一只红铃虫的产卵数y 和温度x 有关,现收集了6组观测数据于下表中,通过散点图可以看出样本点分布在一条指数型函数y =bx ae+的图象的周围.(1)试求出y 关于x 的上述指数型的回归曲线方程(结果保留两位小数);(2)试用(1)中的回归曲线方程求相应于点(24,17)的残差e ∧.(结果保留两位小数)①结果中的,,a be ∧∧∧都应按题目要求保留两位小数.但在求a ∧时请将b ∧的值多保留一位即用保留三位小数的结果代入.②计算过程中可能会用到下面的公式:回归直线....方程的斜率b ∧=121()()()niii n i i x x zz x x ==---∑∑=1221i ni i i ni x z n x zx n x==-⋅⋅-⋅∑∑,截距a z b x ∧∧=-.③下面的参考数据可以直接引用:x =25,y =31.5,z ≈3.05,61i ii x y =∑=5248,61i ii x z =∑≈476.08,6213820ii x==∑,ln18.17≈2.90.20.(本小题满分12分)已知椭圆2222:1(0)x y C a b a b +=>>的离心率为,左、右焦点分别是12,F F .以1F1为半径的圆与以2F为半径的圆相交,且交点在椭圆C 上.(1)求椭圆的标准方程;(2)不过点2F 的直线:l y kx m =+与该椭圆交于,A B 两点,且2BF O ∠与2AF O ∠互补,求AO B ∆面积的最大值.21.(本小题满分12分)已知抛物线2:4C y x =的焦点为F ,过焦点F 且斜率存在的直线l 与抛物线C 交于,B D 两点,且B 点在D 点上方,A 点与D 点关于x 轴对称.(1)求证:直线AB 过某一定点Q ;(2)当直线l 的斜率为正数时,若以BD 为直径的圆过(3,1)M -,求B D Q ∆的内切圆与ABD ∆的外接圆的半径之比.22.(本小题满分10分)以直角坐标系的原点O 为极点,x 轴的非负半轴为极轴,并在两种坐标系中取相同的长度单位,曲线C 1的极坐标方程为2cos sin ρθθ=,曲线C 2的参数方程是222812(1)1k x k k y k ⎧=⎪⎪+⎨-⎪=⎪+⎩(k 为参数).(1)求曲线C 1的直角坐标方程及曲线C 2的普通方程;(2)已知点1(0)2M ,,直线l的参数方程为1+2x y t⎧=⎪⎨=⎪⎩(t 为参数),设直线l 与曲线C 1相交于P ,Q 两点,求11||||MP MQ +的值.华中师大一附中2018—2019学年度上学期期末考试高二年级数学理科试题答案二、选择题:(本大题共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.)13.782514.115.2516.57a <≤三、解答题: (本大题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.) 17.解:(1)设事件A为“甲、乙两人都对高一年级进行调查”………………………………………………1分基本事件共有43331063322C C C A A ⋅⋅⋅个 事件A 包含的基本事件有2313286872C C C C A ⋅+⋅⋅个 由古典概型计算公式,得231328687243331063324()45C C C C A P A C C C AA ⋅+⋅⋅==⋅⋅⋅ ∴甲、乙两人都对高一年级进行调查的概率为445……………………………………………………6分 (2)…………………………………………………………………………………………………………………8分∴22100(40302010)16.66710.82850506040K ⨯⨯-⨯=≈>⨯⨯⨯………………………………………………………11分∴有99.9%以上的把握认为喜欢吃辣与性别有关………………………………………………………12分18.解:∵11!(1,2,,)!()!ii nn n iC i nC i n i n i --=⋅==⋅⋅⋅⋅- ∴1230111611123()232n n n n n n n n n n C C C nC n C C C n -----+++⋅⋅⋅+=++⋅⋅⋅+=⋅=⨯ ∴6n =………………………………………………………………………………………………………3分法二:设0123023nn n n n n s C C C C nC =++++⋅⋅⋅+则,10(1)0n n n n n s nC n C C -=+-+⋅⋅⋅相加得012()2nn nn n s n C C C n =++⋅⋅⋅=⋅即16232n s n -=⋅=⨯ ∴6n =………………………………………………………………………………………………………3分 (1)展开式中各项的二项式系数之和为6264=…………………………………………………………………6分(2)令1x =,得0161a a a ++⋅⋅⋅+=①令1x =-,得601265a a a a -+⋅⋅⋅+=② 相加得027813a a a a +++=(或6512+)………………………………………………………………………10分 (3)令1x =-得01||||||n a a a ++⋅⋅⋅+=65………………………………………………………………………12分19.解:(1)设z 关于x 的回归直线方程为z b x a ∧∧∧=+∴b ∧=61621()i ii ii x zn x zx x ==-⋅⋅-∑∑≈476.08625 3.0570-⨯⨯保留三位小数:b∧≈0.265,保留两位小数:b ∧≈0.27………………………………………………………3分∴a∧=z b x∧-≈3.05-0.265×25≈-3.58……………………………………………………………………5分∴z=lny 关于x 的回归直线方程为ˆz=0.27x -3.58 ∴y关于x的指数型的回归曲线方程为ˆy=0.27 3.58x e -………………………………………………………8分 (2)相应于点(24,17)的残差ˆe=y -ˆy =17-0.2724 3.58e ⨯-=17- 2.90e ≈17-ln18.17e =17-18.17=-1.17………………………………………………………………………12分 20.解:(1)由题2ca a==∴222,1a b ==,方程为2212x y +=………………………………………………………………………2分 (2)2212x y y kx m ⎧+=⎪⎨⎪=+⎩消y 得222(21)4220k x mkx m +++-=设1122(,),(,)A x y B x y ∴228(21)0k m ∆=-+>①2121222422,2121mk m x x x x k k -+=-=++…………………………………………………………………………4分由22BF O AF O π∠+∠=得22AF BF k k +=1212011y yx x +=-- ∴1221()(1)()(1)kx m x kx m x +-++-, =12122()()2kx x m k x x m +-+-=2222242()()202121m mk k m k m k k -⋅+-⋅--=++∴2m k =- ②,由①②得2102k <<……………………………………………………………………………………………………7分∴1211|||||22s m x x m =-==………………………………………10分令221(1,2)t k=+∈,则s=,当43t=时,m xs=…………………………………12分(说明:对于没有解出k的范围或没有代入判别式检验而直接求出最值的,扣2分)21.解:(1)设BD:1(0)x my m=+≠,1122(,),(,)B x y D x y联立214x myy x=+⎧⎨=⎩消x得2440y my--=∴21616m∆=+恒正,12124,4y y m y y+==-∴212112212:()44y y yAB y y xy y+-=--即12124()0x y y y y y---=令0y=,得1214y yx==-∴定点Q(1,0)-………………………………………………………………………………………………4分(2)由题MB MD⋅=1122(3,1)(3,1)x y x y-+⋅-+=2121212()(13)()4016y ym y y y y-++++=∴212410m m--=即得1126m=-或(舍)∴BD:220x y--=……………………………………………………………………………………………6分由题,BDQ∆的内心必在x轴上,设内心(,0),(11)I t t-<<1222121244BQ ABy yk ky yy y+=====--∴:220BQ x+=由I到直线BQ与到直线BD的距离相等得|22|3t+=,∴t,内心I∴BDQ∆内切圆半径35|22|3r==分由对称性,ABD ∆的外心应在x 轴上,设外心(,0)P aBD 中垂线方程为2470x y +-=,得7(,0)2P 联立22204x y y x --=⎧⎨=⎩得1)B ∴BAD ∆的外接圆半径R =分∴r R =………………………………………………………………………………………………12分22.解:(1)221:cos sin C ρθρθ=,得2x y =…………………………………………………………………1分 224:21C y k +=+①,281k x k =+② 相除得2(2)x k y =+,将其代入②得221164x y +=………………………………………………………………3分 又242(2,2]1y k =-+∈-+ 2C 的普通方程为221(2)164x y y +=≠-…………………………………………………………………………5分 法二:设t a n ,,2k n n Z πθθπ=≠+∈,则42c o s 2x y θθ=⎧⎨=⎩(2,n n Z θππ≠+∈)………………………………3分 ∴2C 的普通方程为221(2)164x y y +=≠-…………………………………………………………………………5分 (2)直线l参数方程的标准形式为11+22x y m ⎧=⎪⎪⎨⎪=⎪⎩(m 为参数)代入2x y =得23220m m --=,121222,033m m m m +==-<121212121212||||||1111||||||||||||m m m mMP MQ m m m m m m+-+=+====……………………………………………10分。

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【全国百强校】湖北省武汉市华中师范大学第一附属中学2018-2019学年高二下学期期中考试化学试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.苏轼的《格物粗谈》有这样的记载:“红柿摘下未熟,每篮用木瓜三枚放入,得气即发,并无涩味。

”按照现代科技观点,该文中的“气”是指A.脱落酸B.乙烯C.生长素D.甲烷2.下列有机物一氯取代物的数目相等的是①2,3,4-三甲基己烷①①2,3,4-三甲基戊烷①间甲乙苯A.①①B.①①C.①①D.①①3.下列有机物的系统命名,正确的是A.2-甲基-2-氯丙烷B.2-甲基-1-丙醇C.1, 3, 4-三甲苯D.2-甲基-3-丁炔4.下列说法中正确的是A.仅用水不能区分己烷、溴乙烷、乙醇三种液态有机物B.碳原子数小于或等于6的单烯烃,与HBr加成反应的产物只有1种结构,符合条件的单烯烃有3种C.苯、乙烷、乙烯、乙炔分子中碳碳键的键长分别为a、b、c、d,则b c a>>>d D.等质量的烃完全燃烧,耗氧量最多的是甲烷5.己烯雌酚是一种激素类药物,结构简式如图所示,下列有关叙述中正确的是A.该有机物属于芳香烃C.该分子对称性好,所以没有顺反异构D.该有机物分子中,最多可能有18个碳原子共平面6.红色基B(2-氨基-5-硝基苯甲醚)的结构简式如图所示,它主要用于棉纤维织物的染色,也用于制一些有机颜料,则分子式与红色基B相同,且氨基(—NH2)与硝基(—NO2)直接连在苯环上并呈对位关系的同分异构体的数目(包括红色基B)为A.7种B.8种C.9种D.10种7.如图两种化合物的结构或性质描述正确的是()A.两种化合物均是芳香烃B.两种化合物互为同分异构体,均能与溴水反应C.两种化合物分子中共平面的碳原子数相同D.两种化合物可用红外光谱区分,但不能用核磁共振氢谱区分8.下列实验操作简便、科学、易成功且现象正确的是A.将乙酸和乙醇的混合液注入浓硫酸中制备乙酸乙酯B.将铜丝在酒精灯外焰上加热变黑后再移至内焰,铜丝恢复原来的红色C.在试管中注入2mL苯酚溶液,再滴入几滴FeCl3溶液后,溶液即有紫色沉淀生成D.向苯酚溶液中滴加几滴稀溴水出现白色沉淀9.卤素互化物与卤素单质性质相似。

已知CH2=CH-CH=CH2(1,3-丁二烯)与氯气发生1①1加成产物有两种:①CH2Cl-CHCl-CH=CH2(1,2-加成)①CH2Cl-CH=CH-CH2Cl (1,4-加成),据此推测CH2=C(CH3)-CH=CH2(异戊二烯)与卤素互化物BrCl的1①1加成产物有几种(不考虑顺反异构和镜像异构)A.9种B.8种C.7种D.6种10.下列说法和结论正确的是A.A B.B C.C D.D11.下列与有机物的结构、性质及有关叙述中不正确的是①C4H10O属于醇的同分异构体有4种①乙烯、氯乙烯、聚乙烯均可使酸性高锰酸钾溶液褪色①分馏、干馏都是物理变化,裂化、裂解都是化学变化①酚醛树脂、聚乙烯、光导纤维都属于高分子化合物①核磁共振氢谱法、红外光谱法、紫外光谱法、色谱法均可用于有机物的鉴别①聚乙烯、石油、汽油、煤、煤焦油都是混合物A.①①①①B.①①①①C.①①①①D.①①①12.为探究一溴环己烷()与NaOH的醇溶液共热发生的是水解反应还是消去反应,下列四位同学分别设计如下实验方案,其中判断正确的是A.向反应混合液中滴入稀硝酸中和NaOH溶液,然后滴入AgNO3溶液,若有浅黄色沉淀生成,则可证明发生了消去反应。

B.向反应混合液中滴入溴水,若溶液颜色很快褪去,则可证明发生了消去反应。

C.向反应混合液中滴入酸性KMnO4溶液,若溶液颜色变浅,则可证明发生了消去反应D.向反应混合液中先加盐酸酸化,再加入溴水,如果溶液颜色很快退去,则证明发生了消去反应。

13.关于(b)、(d)、(p)的下列说法不正确的是A.b、d、p均属于烃类有机物B.b、d、p碳元素的质量分数依次增大C.b、d、p均能使溴的CCl 4溶液褪色D.b、d、p分子中苯环上一溴代物均有3种14.下列“试剂”和“试管中的物质”不能..完成“实验目的”的是()A.A B.B C.C D.D15.已知酸性大小:羧酸>碳酸>酚。

下列含溴化合物中的溴原子,在适当的条件下都能被羟基(—OH)取代(均可称为水解反应),所得产物能跟NaHCO3溶液反应的是A.B.C.D.16.下列各组液体只用一种试剂即可一一区分开的是①C2H5OH、AgNO3(aq)、C2H5Br、C6H5OH(aq)、C6H6、KI(aq)①CH3COOH(aq)、C2H5OH、C6H5ONa(aq)、C6H5Br、C6H14①C6H5OH(aq)、Na2S(aq)、Na2CO3(aq)、C6H5NO2、NaOH(aq)、C2H5OH①CH3OH、CH3CH2CH2OH、C6H5OH、CH3COOH①环己烷、苯、甲苯、硝基苯、溴苯A.①①①B.①①①C.①①①D.①①①17.下图所示的电解池I和①中,a、b、c和d均为Pt电极。

电解过程中,电极b和d上没有气体逸出,但质量均增大,且增重b <d 。

符合上述实验结果的盐溶液是A .AB .BC .CD .D18.CuI 是一种不溶于水的白色固体,它可由反应:2Cu 2++4I -=2CuI↓+I 2而得到。

现以石墨为阴极,以Cu 为阳极,电解KI 溶液,通电前的电解液中加入少量酚酞和淀粉溶液。

电解开始不久阴极区溶液呈红色,而阳极区溶液呈蓝色,对这个现象的正确解释是 ①阴极的电极反应为:2H 2O +2e -=H 2↑+2OH -,使c (OH -)>c (H +)①阳极的电极反应为:2Cu +4I --4e -=2CuI↓+2I 2,I 2遇淀粉变蓝①阳极的电极反应为:Cu -2e -=Cu 2+,Cu 2+显蓝色①阳极的电极反应为:2I --2e -=I 2,I 2遇淀粉变蓝A .①①B .①①C .①①D .①①二、实验题19.1, 2-二溴乙烷的制备原理是CH 3CH 2OH 24H SO 170C ︒→浓CH 2=CH 2↑+H 2O ;CH 2=CH 2+Br 2→BrCH 2—CH 2Br 。

某课题小组用下图所示的装置制备1, 2-二溴乙烷。

回答下列问题:(1)组装仪器后进行该实验前必须进行的操作是___________。

(2)装置B 的作用是____________。

(3)三颈瓶内加入一定量的乙醇-浓硫酸混合液和少量粗砂,加入粗砂的目的是_____,仪器F 的名称是________。

(4)装置C 内发生的主要反应的离子方程式为_________。

(5)加热三颈烧瓶前,先将C 与D 连接处断开,再将三颈烧瓶在石棉网上加热,待温度升到约120①时,连接C 与D ,并迅速将A 反应温度升温至160~180①,从F 中慢慢滴加乙醇-浓硫酸混合液,保持乙烯气体均匀地通入装有3.20mL 液溴()33g/cm 液ρ=和3mL 水的D 中试管,直至反应结束。

①将C 与D 连接处断开的原因是_____________________。

①判断反应结束的现象是____________________(6)将粗品移入分液漏斗,分别用a. 水洗涤,b. 氢氧化钠溶液洗涤,c. 过滤,d. 用无水氯化钙干燥,e. 蒸馏收集129~133①馏分,最后得到7.896g 1, 2-二溴乙烷。

①粗品提纯的步骤是______(填序号),①1, 2-二溴乙烷的产率为________。

(7)下列操作中,不会导致产物产率降低的是______(填正确答案的标号)a. 乙烯通过溴水时速率太快b. 装置C 中的NaOH 溶液用水代替c. 去掉装置D 烧杯中的水d.实验时没有E 装置e. D 中的试管里不加水三、有机推断题20.已知:CH 3—CH=CH 2+HBr→CH 3—CHBr—CH 3(注意溴原子的连接位置,下同),1 mol 某芳香烃A 充分燃烧后可以得到9 mol CO 2和5 mol H 2O ,该烃苯环上的一氯代物有2种。

该烃A 在不同条件下能发生如下所示的一系列变化。

请回答下列问题(1)写出A 的结构简式:__________,A 中官能团的名称是________。

(2)上述反应中,①是________反应,①是________反应。

(填反应类型)(3)写出D 、E 物质的结构简式:D_______,E_______。

(4)写出A→C 反应的化学方程式:____________________。

(5)写出F→H 反应的化学方程式:________________。

(6)写出F 催化氧化反应的化学方程式:___________。

(7)下列关于F 的说法不正确的是______(填序号)。

a. 能发生消去反应b. 能与金属钠反应c. 1mol F 最多能和4mol 氢气反应d. 分子式C 9H 11Oe. 能使酸性高锰酸钾褪色四、填空题21.金刚烷是一种重要的化工原料,工业上可通过下列途径制备:请回答下列问题:(1)环戊二烯分子中最多有____个原子共平面。

(2)金刚烷的分子式为_______,其分子中的-CH 2-基团有____个。

(3)下面是以环戊烷为原料制备环戊二烯的合成路线:其中,反应①的产物名称是_______,反应①的反应试剂和反应条件是________。

(4)已知烯烃能发生如下反应:3O −−→2H O/Zn −−−−→RCHO + R'CHO请写出下列反应产物的结构简式:3O −−→2H O/Zn −−−−→_____22.(1)分子式为C 3H 6O 2的二元混合物,如果在核磁共振氢谱上观察到氢原子给出的峰有两种情况.第一种情况峰给出的强度为1:1;第二种情况峰给出的强度为3:2:1。

由此推断混合物的组成可能是_______(写结构简式,写一种组合即可)。

如图是一种分子式为C 3H 6O 2的有机物的红外光谱图,则该有机物的结构简式为______。

(2)经测定,某有机物含碳77.8%、氢7.4%、氧14.8%;用质谱仪测定结果如下图。

分析求此有机物的分子式为______。

若此有机物能与烧碱反应,且苯环上的一溴代物只有四种,试写出它的结构简式_______。

23.如图中A为电源,B为浸透饱和氯化钠溶液和酚酞溶液的滤纸,容器C为盛有500mL 各0.1mol/L的CuSO4和K2SO4混合液的电解槽,e、f均为铂电极。

接通电路后,发现B上的c点显红色,C中阳极产生1.12L(标况)气体,电解过程不考虑能量损失。

(1)电源A上的b为______极,滤纸B上d为______极。

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