【附20套高考模拟试题】2020年普通高等学校招生全国统一考试模拟试题含答案
2020年普通高等学校招生全国统一考试模拟试题
第一部分（共20小题每，小题1.5分，满分30分）
1．You ________ have booked the tickets in advance; there were plenty left.
A．needn’t B．can’t
C．shouldn’t D．mustn’t
2．During each NBA season, basketball fans cheer on their favorite teams to make _______ through. A．it B．them
C．that D．those
3．When Thanksgiving Day is the corner, stores and supermarkets are busy with people. A．around B．on C．with D．at
4．_______, I have never seen anyone who's as capable as John.
A．As long as I have traveled B．Much as I have traveled
C．Now that I have traveled so much D．As I have traveled so much
5．— How can I wake up so early?
—Set the alarm at 5:00 am., you will make it.
A．and B．but
C．or D．so
6．By doing so, you can ________ more information and details about the topic, and better understand it. A．keep up with B．do away with
C．have access to D．get down to
7．Once he makes up his mind to do something, seldom ______ give it up.
A．he will B．does he
C．would he D．will he
8．________ children believe they can succeed, they will never become totally independent.
A．If B．Since C．Unless D．Though
9．____________the fierce competition in job seeking, many university graduates have no choice but to reduce their own demand for the salary.
A．Faced B．Facing
C．To face D．Having faced
10．Eggs, meat, vegetables and other foods can easily be poisoned by microorganisms such as ______. A．phenomena B．dilemma C．diploma D．bacteria
11．Our society would be better off but for the fact that the economy ________ by the current global financial crisis.
A．had been affected B．were affected
C．should be affected D．is affected
12．After I left _______ Linchuan No.2 Middle School, I began college classes in _______ September 2010.
A．a; the B．不填; the C．the; the D．不填；不填
13．—What about the services in this hotel?
—They are at least as good as, if not superior to, ______ in yours.
A．it B．those C．that D．the one
14．We climbed up to the top of a hill,___________ we got a good view of the whole forest park. A．which B．where
C．when D．that
15．While in the university, we were offered a number of after-school activities to our social skills. A．create
B．grow
C．settle
D．develop
16．--- I’m afraid the company will not hire me.
--- Come on, Bill, relax! Y ou have a lot of experience and fine references and your college work is ideal background for them. ______________
A．It'll be no sweat. B．All good things come to an end.
C．Words pay no debts. D．Don't give me any jaw.
17．The foreigners here are greatly impressed by the fact that _______ people from all walks of life are working hard for ________ new Tianjin.
A．/; a B．/; the
C．a; a D．the; the
18．— Don't look down upon Bob. He has his own advantages.
—Oh, yes others are weak, he is strong.
A．Before B．When
C．Where D．Though
19．Although the Roma couldn’t be forced to pay taxes, they couldn’t vote ______they agreed to ______a government.
A．unless, submit to B．until, correspond to
C．when, resign to D．while, compromise to
20．I certainly expect to be elected best student of the year. It’s really ________!
A．a good Samaritan B．a wet blanket
C．a feather in my cap D．a piece of cake
第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
21．（6分）On the morning of September 7th, 19- year- old Ryan Harris and 40-year-old Stonie Huffman, two Sitka, Alaska residents, took off on their 28-foot boat in search of fish. Two miles into the ocean, their boat began to have some problems. They managed to fix the problems, but decided to head
back to shore anyway. However, before they could call for help or grab a life jacket, an eight-foot wave slammed hard against their boat and overturned it, throwing both men into the cold Alaskan waters.
Stranded, they beg an to look around to see what they could grab onto and saw a couple of the empty fishing boxes from the boat, floating around. Ryan managed to climb inside one. Stonie, however, was not as lucky and managed to only grab onto the lid of the box. Soon, they both started drifting apart.
While Ryan continued to bob up and down in the box, the waves started carrying Stonie away. But as luck would have it, he caught sight of one of the life suits from their boat floating in the ocean and managed to grab it. Though putting it on and hanging onto the lid at the same time was not an easy task, Stonie managed it and then began his long swim back to shore. He ended up on a deserted patch of land about 25 miles northwest of Sitka, where he had to wait until Saturday morning almost 24 hours after the fishing
trip began, for rescuers to find him. Meanwhile, 19-year-old Ryan continued to drift around the ocean trying to stay alive and hoping someone would find him. The brave teenager repeated himself over and over again, “I’m Ryan Hunter Harris and I’m not going to die here.” He was sure he would be rescued.
Two hours after his friend was rescued and able to guide the Coast Guard and, 26 hours after the adventure began, Ryan was finally found and brought back to shore. What was amazing was that besides a few scratches, the youngster was in perfect health. Will he ever venture out on a fishing trip again? Only time will tell!
1、We learn that on Ryan and Stonie’s way back to shore, .
A．they had expected they would encounter danger
B．they were struck by a big wave all of a sudden
C．they tried to fix the problems of their boat
D．they were frightened by many big waves
2、Wh at does the underlined word“Stranded” in Paragraph 2mean?
A．Trapped. B．Injured.
C．Encouraged. D．Puzzled.
3、Paragraph 4 shows when Ryan was drifting around the ocean, he .
A．was frightened B．amused himself
C．became hopeless D．stayed positive
4、The writer finds it surprising that .
A．Ryan was finally found B．it took so long to finally find Ryan
C．Ryan was only slightly injured D．Ryan decided to go on a fishing trip again 22．（8分）There is one type of illness in the world that has a severe effect on more people than anything else and is very deadly. If untreated, this illness could affect everything you do. What is this illness?
Depression. Serious depression requires professional treatment. Self-induced depression is something each of us can change.
Everyone’s circumstances are different, but the causes of self-induced depression are common: low self-esteem, hurtful thinking and a bad attitude.
So how can we change the way we think, feel, and have a cheerful attitude?
First we must look at ourselves, truly and honestly examining our motives for what we wish to accomplish. If you are dissatisfied because you feel you haven’t or can’t do anything, then one step is needed—to set goals.
Always start your goals relatively small and easy to attain. Think of them as sand; one grain may be insignificant(微不足道的) but as a group they form the beach. Once you have set and attained small goals for yourself, move on to slightly larger, more challenging goals.It takes not just setting goals but positive thinking. How can we obtain this?
There are a number of factors that can make us think negatively and one of those is diet.In my opinion, a person who eats a lot of take-out and fast food is feeding their body junk. Start by eating better foods which give the bo dy much NEEDED minerals. If your physical body is happy, it’s much easier for your mental body or “thinking ability” to be happy.[
Next, exercise. Half an hour a day is recommended for positive well-being. Then think about good memories you had, or generally think of things that make you smile. Remember, everything you wear costs money but to wear a smile is free. A smile can be the difference between an average day and a great day.
If you follow these steps, positive change is on the way.
1、Which of the statements about depression is TRUE?
A．Depression is a kind of illness that can’t be cured like some cancer.
B．Depression can all be cured successfully by doctors in an easy way.
C．Those who suffer from depression live in the same circumstances.
D．Those who suffer from depression hold negative attitudes.
2、According to the passage we can learn that ________.
A．a practical goal can help people to achieve a sense of success
B．we shouldn’t be satisfied with small goals that are insignificant
C．we should avoid challenging goals that may result in failure
D．people can enjoy happiness even if they set inappropriate goals
3、What can we infer from the reading passage?
A．Those who can achieve small goals can surely achieve big ones.
B．Depression has something to do with the food people eat.
C．Y ou can only exercise half an hour if you want to get rid of depression.
D．Smile makes no sense to the feeling in daily life.
23．（8分）The morning she left for Camp Kanawa, Maria awoke with an ache in her stomach. She had gone on ple nty of parties. She ’ d even spent a whole weekend at Aunt Jolie and Uncle Ed ’ s. So what happened to her?
No breakfast today, she thought, imagining the ache turning into throwing up and a horrible road trip after a full meal. As usual, Maria felt hungry as soon as the room smelled of French toast. On the other hand, maybe a good breakfast was exactly what she needed.
“There’ s my big camper!’’ said her mom. Then, she walked to the stove, placed two pieces of French toast on a plate and powdered sugar sno wing down. “Just like you like it. ’’ At the meanwhile, Maria was already in position, armed with knife, fork, napkin and full glass of milk.
‘‘Get started while it ’ s hot. Your father ’ s coming down in a minute. I told him to shave. Don’t want the bear—I mean, the bushy black beard.，?
“Okay，okay，” Maria’s dad said with a smile. “Clean as a whistle. Just like you ordered. ”
“ Really?” Maria ’ s mom shrugged (耸肩）?
“ I think it ’ s fashionable，” Maria said，dipping a bite in some syrup (糖楽）.
“Well，your old man is fashionable，，’ her dad s aid, moving his head the way he did when he wanted to look like a cool surfer man but looked more like an Egyptian robot. “ In fact，I was the most popular kid at my camp.，’
“For the record，it was a science camp，，’ Maria’s mother reminded her, looking her s traight in the eyes. “In all seriousness, Maria, popularity is not important and finding the people who like you for you—that ’ s what matters. ”
“Your mom speaks the truth, Sugar,” said Maria’ s dad，wiping his thick beard with a napkin. “Just be yourself. You’ 11 definitely enjoy it.
1、What probably led to Maria’s hesitation to eat breakfast?
A．The lack of adequate nutrition.
B．The concern about feeling sick.
C．The inviting smell of French toast.
D．The worry about getting overweight.
2、What is Maria’s attitude towards her father’s beard?
A．Favorable. B．Disapproving.
C．Concerned. D．Uncaring.
3、Why did Maria* s mother remind her that her father went to a science camp?
A．To advise Maria not to focus on popularity.
B．To share her similar experience with Maria.
C．To emphasize the importance of science to Maria.
D．To persuade Maria not to discuss subjects except science.
4、What is the best title for the text?
A．Father ’ s beard B．A wonderful breakfast
C．Family talk about a camp D．Maria ’ s dream to be a big camper
24．（8分）The best bikes for the beginners
When it comes to purchasing your first bike, the choice is endless, making it tough to know what to go for. Here are the best buys on the market right now.
Boardman CX Comp
This is a cross-country bike, and it’s so versatile（多用途的）that you can handle any terrain（地势）on it, making it a great choice for those wanting to try various cycling subjects. If you leave on the thick tires it comes with, it can ride on various paths and can even handle some less demanding mountain bike routes. Alternatively, put on thin, slick tires and treat it as a road bike. It has basket and comes with Shimano Sora gears, which are outstanding for its price.
&650, Halfords
Planet X RT-58 v2
Planet C is based in Yorkshire, which mea ns you’d probably have to buy this bike without seeing it. But it’s worth it, because this is an excellent machine at a lower price. Planet X is a highly rated manufacture and this model comes with Shimano Sora gears.
&439, Planet X
Specialized Allez ES
Specialized is one of the biggest and most popular brands in cycling, and this is its hugely popular primary road bike. It comes with solid components from front to back and you’ll look great out on the road.
&575, Evans Cycles
Boardman Road Team Carbon
If you can push budget further still, this bike is worth the extra investment. The frame is made entirely from carbon, which is lighter, faster and more comfortable than the composition metal models above and gives you an all-round more enjoyable ride. It also means that if you get really serious about cycling, you don’t have to upgrade as quickly as you would with a cheaper bike.
&800, Halfords
1、Compared with other bikes, what is the strength of the Boardman CX Comp?
A．Its outstanding price B．Its Shimano Sora gears
C．Dealing with any terrain D．Putting on very firm tires
2、Which is suitable for you if you want to buy at an economical price but with Shimano Sora gears? A．Planet X RT-58 v2 B．Specialized Allez ES
C．Boardman CX Comp D．Boardman Road Team Carbon
3、What can we know about the bikes mentioned in the text?
A．The second has sold out so fast.
B．Y ou should be careful when riding the third.
C．The forth is very expensive but with special material.
D．Y ou can only ride the first on the mountainous road.
4、In which column does the text probably appear in the newspaper?
A．Travel and culture. B．Fashion and lifestyle
C．Health and medicine. D．Production and marketing.
25．（10分）Each year，millions of children around the world are unable to go to school. To draw attention to this widespread problem，the United Nations（UN）is putting education first. Recently，the UN screened a documentary film called Back to School. The film is the second in a series of documentaries（纪录片）for the project Time for School.
These films follow seven children from seven different countries. This 12-year project began in 2006，when the children first started school. "This is something we could do to help the education crisis in the world，"said producer and writer Judy Katz. “Doc umentary film-makers can get deeply involved in a problem and do something about it.”
More than 100 million children will never set foot in a school. Sixty percent of those children are girls. Cheryl Faye，head of the UN Girls Education Initiative，spoke about the many factors that prevent girls from getting an education. One problem is the long distance many children must travel to get to school. Also，girls in many cultures are traditionally expected to marry early and work to help their families. “We need to make a special effort for girls，”Faye said.
As part of the UN's Millennium goals，the organization wants every single child to get at least an elementary education by 2018.
Students from Lawrence Middle School in New York were deeply moved after they saw the film. The seventh grade class is raising money to help build a library on the outskirts of Nairobi，Kenya（肯尼亚），where Joab-a child in the documentary-lives. The class teacher，Karen Weiner，and the class are known in their school as the “Kenya crew”. All the kids were really happy to support Joab and said they felt great about their fund-raising efforts. Like the seventh graders at Lawrence Middle School，kids can work
together to make a difference in places like Nairobi. By raising money for education，kids can help children on the other side of the world have a chance of a better，happier life.
1、What's the purpose of the UN screening the documentary film Back to School？
A．To raise funds for global education.
B．To raise awareness of the need for global education.
C．To encourage all the children to come back to school.
D．To show the achievements which have been made in the past few years.
2、Special efforts should be made for girls because ____________
A．sixty percent of the children in the world are girls
B．more than 100 million girls will never go to school
C．most of the girls are tired of going to school
D．more than one half of the children who never go to school are girls
3、Which of the following could NOT be the factor that prevents girls from getting an education？A．Long distance from school. B．Being born weak.
C．Helping work for the family. D．Early marriage.
4、Why are the class teacher，Karen Weiner，and the class considered as “Kenya crew” ？A．Because they are trying their great efforts to raise money for the education of Kenya Children. B．Because they are actors in the documentary film Back to School.
C．Because they are mostly from Kenya，where the child in the documentary lives.
D．Because they all have the same experience as Joab，the Kenya child.
5、The last paragraph mainly discusses__________________
A．American middle school students' desire to go to Kenya
B．the content of the documentary film Back to School
C．an example of being inspired to take action after seeing the film
D．how students from Lawrence Middle School raise money for their education
第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．
26．（30分）My mother always says that I’m born to dance ballet. But that September when I was in a ballet class and went to do a turn, something just happened. I heard it and I surely 1 it. I went right to a doctor and got an X-ray examination, which 2 a lot of damage to my knee — a(n) 3 injury for a dancer. I had to have a(n) 4 Everything had been going so well and now I had this huge injury. Dance was my life, but 5 , I wasn’t going to be able to do it for a year or 6 never again.
My dad was really a big inspiration for me. He was 7 a battle against cancer at that time. He showed me how to make it through a 8 situation. I thought that if he could do that, I could handle this, too.
9 my operation, I had great difficulty walking, but I knew that if I really worked hard, my injury would heal.
Several months later, I definitely wasn’t at my strongest, but I could 10 a class. The dancing I did was 11 at first — moves that my knee could handle.
Once we started practicing in the fall, I was beginning to feel like myself 12 One day, I 13 the schedule and my name was next to Eliot Feld. I thought it must be a(n) 14 because he is very famous in the ballet world. But it wasn’t. He15 me and taught me a lot of things. At l8, I had a solo performance! It was a big 16 I was so excited and felt like a real ballerina. After the 17 , Eliot
s aid, “You know, you have a(n)18 —and you are also made of steel.” That, coming from him, was the 19 compliment (赞美) I have ever received. I’d like to think that20 my injury made me strong.
1、A．touched B．accepted C．broke D．felt
2、A．pointed B．said C．read D．showed
3、A．necessary B．deadly C．practical D．important
4、A．holiday B．cry C．operation D．test
5、A．in time B．all of a sudden C．at present D．once in a while
6、A．possibly B．luckily C．surprisingly D．hardly
7、A．leading B．fighting C．losing D．inventing
8、A．wonderful B．difficult C．positive D．heavy
9、A．After B．During C．At D．Over
10、A．set out B．take up C．break into D．get through
11、A．basic B．quick C．formal D．hard
12、A．before B．then C．again D．too
13、A．stole B．borrowed C．faced D．checked
14、A．mistake B．opportunity C．problem D．task
15、A．held B．obeyed C．encouraged D．received
16、A．surprise B．secret C．success D．position
17、A．speech B．performance C．competition D．match
18、A．gift B．chance C．luck D．exercise
19、A．simplest B．deepest C．greatest D．smartest
20、A．dealing with B．letting out C．setting up D．turning to
第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
27．（15分）Anyone who has had a long-term disease knows that recovering at home can be lonely. This can be 1．(especial) true of children. They may feel 2．(leave) out. Now, these children may have a
high-tech friend to help fed less alone. A small robot may help children who are recovering from long-term illnesses. The robot like human beings takes their place at school. And their school friends must help carry the robot between classes and place the robot on their desks.
Through the robot, a child can hear his or her teachers and friends. He or she can also attend classes from wherever they are recovering—whether at home 3．from a hospital bed. Dolva, one of the scientists who 4．(be) concentrating on developing the robot, explains 5．the robot AVI works. She says from home, the child uses a tablet or phone to start the robot, 6．(use) the same device, he or she can contro l the robot’s movements. Inside the robots there is a small computer linked 7．a 4G network. The robot is 8．(equip) with speakers, microphones and cameras, 9．makes communicating 10．(easy). So it’s the eyes and the cars and the voices at school. Hopefully A VI will help some children feel less lonely while they are absent from class.
第四部分写作（共两节）第一节短文改错（满分10分）
28．（10分）短文改错（共10小题；每小题1分，满分10分）
假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下面划一横线，并在该词下面写出改正后的词。
注意：
1、每处错误及其修改均仅限一词；
2、只允许修改10处，多者（从第11处起）不计分。
June 12, Sunday
Today is Sunday、I didn’t get up early as usually、In the morning after I finished my homework, I do some washing、Then I telephoned one of my classmate and invited him to see a film、
And unfortunately, when we got to the cinema at 3:00 pm we found all the tickets had sold out．Then we went to our school and played the football．Later, we were about to go home when we saw our English teacher, Mr、Wang, came through the school gate．He told us we had made many progress in English this term．He also suggested that we read more and wrote more．We promised to him that we would follow his advice．
第二节书面表达（满分25分）
29．（25分）某英语刊物有一个介绍各国风俗习惯的专栏，请为该专栏写一篇短文，简要介绍中国的春节。要点提示如下：
1.它是中国传统的节日之一；
2.贴春联，放鞭炮，迎新年
3.合家团聚，吃年夜饭，共同守岁
4.穿新衣，拜新年，逛庙会。
高考生物高考模拟试卷(附答案)
一、选择题（6分/题） 1.GFP在紫外光的照射下会发出绿色荧光。依据GFP的特性，你认为该蛋白在生物工程中的应用价值是 A．作为标记基因，研究基因的表达B．作为标签蛋白，研究细胞的转移 C．注入肌肉细胞，繁殖发光小白鼠D．标记噬菌体外壳，示踪DNA路径 2.右图为关于细胞的生物膜系统的概念图，下列相关叙述错误的是 A.图中a、b、c分别是指细胞膜、具膜的细胞器和核膜 B.图中m是指叶绿体的类囊体膜 C.图中p是指线粒体的内膜 D.图中的f和h分别是指内质网和高尔基体 3.下列关于各种酶作用的叙述，不正确的是 A．DNA连接酶能使不同脱氧核苷酸的磷酸与脱氧核糖连接B．RNA聚合酶能与基因的特定位点结合，催化遗传信息的转录C．一种DNA限制酶能识别多种核苷酸序列，切割出多种目的基因D．胰蛋白酶能作用于离体的动物组织，使其分散成单个细胞 4.生命世界多姿多彩，既统一又多样。下列有关说法中正确的有 ①没有细胞结构的生物一定是原核生物②光合作用一定要在叶绿体中进行③在细胞分裂过程中一定有DNA的复制④单倍体生物的细胞中一定只有一个染色体组⑤两个种群间的生殖隔离一旦形成，这两个不同种群的个体之间一定不能进行交配⑥在一条食物链中，营
养级高的生物个体数一定比营养级低的生物个体数少 A．一项B．二项C．三项D．四项 5.对下列有关细胞分裂的各图分析正确的有 A．甲乙两图所示细胞中都有2个染色体组B．甲乙两图对应丁图中的CD段 C．甲图可能是卵原细胞的增殖D．丙图中染色体与DNA 的比是2：1 6.下列对图中有关的生物学意义描述正确的是 A．若切断甲图中的c点，则刺激b点后，a点会兴奋，肌肉会收缩B．乙图中该遗传病一定是常染色体显性遗传病 C．丙图中，对向光弯曲的植物而言，若茎背光侧为B对应的生长素浓度，则茎向光侧不可能为C对应的浓度 D．丁图中若B表示5片新鲜土豆片放入等量过氧化氢溶液中的气体变化，则A表示8片新鲜土豆片放入等量过氧化氢溶液中的气体变化 二、非选择题 7．（一）（20分）下列图（一）示某兴趣小组研究生物新陈代谢的装置示意图（Ⅴ使装置中的空气以一定速度按箭头方向流动），图（二）为植物和高等动物新陈代谢的部分过程示意图，请根据图分析回答问题:
2018年高三数学模拟试题理科
黑池中学2018级高三数学期末模拟试题理科（四） 一、选择题：本大题共12小题，每小题5分，共60分. 1.已知集合{}2,101，， -=A ，{} 2≥=x x B ，则A B =I A ．{}2,1,1- B.{ }2,1 C.{}2,1- D. {}2 2.复数1z i =-,则z 对应的点所在的象限为 A ．第一象限 B.第二象限 C.第三象限 D.第四象限 3 .下列函数中,是偶函数且在区间(0,+∞)上单调递减的函数是 A ．2x y = B ．y x = C ．y x = D ．2 1y x =-+ 4.函数 y=cos 2(x + π4 )－sin 2(x + π4 )的最小正周期为 A. 2π B. π C. π2 D. π 4 5. 以下说法错误的是 （ ） A ．命题“若x 2 -3x+2=0,则x=1”的逆否命题为“若x≠1,则x 2 -3x+2≠0” B ．“x=2”是“x 2 -3x+2=0”的充分不必要条件 C ．若命题p:存在x 0∈R,使得2 0x -x 0+1<0,则﹁p:对任意x∈R,都有x 2 -x+1≥0 D ．若p 且q 为假命题,则p,q 均为假命题 6.在等差数列{}n a 中, 1516a a +=,则5S = A ．80 B ．40 C ．31 D ．-31 7.如图为某几何体的三视图，则该几何体的体积为 A ．π16+ B ．π416+ C ．π8+ D ．π48+ 8.二项式6 21()x x +的展开式中，常数项为 A ．64 B ．30 C ． 15 D ．1 9.函数3 ()ln f x x x =-的零点所在的区间是 A ．(1,2) B ．(2,)e C ． (,3)e D ．(3,)+∞ 10.执行右边的程序框图，若0.9p =，则输出的n 为 A. 6 B. 5 C. 4 D. 3 开始 10n S ==， S p
高三数学高考模拟题(一)
高三数学高考模拟题 (一) -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN
高三数学高考模拟题（一） 一. 选择题（12小题，共60分，每题5分） 1. 已知集合{}{} M N x x x x Z P M N ==-<∈=?13302，，，，又|，那么集合 P 的子集共有( ) A. 3个 B. 7个 C. 8个 D. 16个 2. 函数y x =-的反函数的图象大致是( ) A B C D 3. 已知直线l 与平面αβγ、、，下面给出四个命题： ()//(),()()////12314若，，则若，若，，则若，，则l l l l l ααββαββγαγγγββ αβαβ⊥⊥⊥⊥⊥?⊥⊥? 其中正确命题是( ) A. (4) B. (1)(4) C. (2)(4) D. (2)(3) 4. 设cos ()31233 x x x =-∈-，且，，则ππ 等于( ) A B C D ....±±±± ππππ 18929518 5. 设a b c a b c =+=-=sin cos cos 1313221426 2 2 ，，，则、、之间的大小关系是( )
A b c a B c a b C a c b D c b a ....>>>>>>>> 6. ()15+x n 展开式的系数和为a x n n ，()572+展开式的系数和为 b a b a b n n n n n n ，则lim →∞-+234等于( ) A B C D ....- --12131 71 7.椭圆 x y M 22 4924 1+=上有一点，椭圆的两个焦点为F F MF MF MF F 121212、，若，则⊥?的面积是( ) A. 96 B. 48 C. 24 D. 12 8. 已知椭圆x y t 22 1221 1+-=()的一条准线的方程为y =8，则实数t 的值为( ) A. 7和－7 B. 4和12 C. 1和15 D. 0 9. 函数y x x x =+2sin (sin cos )的单调递减区间是( ) A k k k Z B k k k Z C k k k Z D k k k Z .[].[].[].[]28278 27821588 58 3878 ππππ ππππππ ππ ππππ-+∈++∈-+ ∈+ +∈，，，， 10. 如图在正方体ABCD －A B C D 1111中，M 是棱DD 1的中点，O 为底面ABCD 的中心，P 为棱A B 11上任意一点，则直线OP 与直线AM 所成的角( ) A. 是π4 B. 是π 3 C. 是π 2 D. 与P 点位置有关 1 A 11. 在平面直角坐标系中，由六个点O(0，0)、A(1，2)、B(－1，－2)、C(2，4)、D(－2，－1)、E(2，1)可以确定不同的三角形共有( )
2018届高三高考英语模拟题
高三英语试题 （考试时间：120分钟试卷满分：150分） 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。 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。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，请将本试卷和答题卡一并上交。 第I卷 第一部分听力（共两节，满分30分） 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转写到答题卡上。 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1．Where are the speakers? A．In a supermarket. B．In a restaurant. C．At home. 2．What will the woman probably do tomorrow afternoon? A．See a doctor. B．Meet her brother. C．Watch a movie. 3．How will the speakers go to the bookstore? A．By bike. B．By bus. C．By taxi. 4．What does the woman suggest the man do? A．Go to France. B．Give up the program. C．Take three months off. 5．What do we know about Dario? A．He feels hopeless. B．He likes Coke very much. C．He was too busy to go shopping.
2021年高三生物普通高等学校招生全国统一考试模拟卷
高三生物试题 一、选择题：本题14小题，每小题2分，共28分。每小题给出的四个选项中，只有一个选项是最符合题目要求的。 1.核酶是一类具有催化功能的单链RNA分子，可降解特定的mRNA序列。下列关于核酶的叙述，正确的是 A.核酶与脂肪酶仅有三种元素相同 B.核酶的基本单位是氨基酸 C.核酶可降低化学反应所需活化能 D.核酶不具有专一性和高效性 2.下列有关生物实验所涉及的仪器、试剂及技术的说法正确的是 ①脂肪的鉴定②噬菌体侵染细菌实验③证明DNA半保留复制 ④光合色素提取和分离⑤有丝分裂的观察实验⑥DNA的粗提取与鉴定 A.①②⑤均需使用光学显微镜 B.④⑥均需使用无水乙醇 C.②③均需使用离心技术 D.②③⑤均需使用同位素标记法 3.某种铁线莲的根茎可作中药，有重要经济价值。下表为不同遮光处理对其光合作用影响的结果， 相关叙述正确的是 B.叶绿素含量与净光合速率呈正相关 C.叶绿素a/b可作为其利用弱光能力判断指标 D.遮光90%时，铁线莲不进行光合作用 4.黄曲霉毒素主要是由黄曲霉菌产生的可致癌毒素，其生物合成受多个基因控制，也受温度、pH等 因素影响。下列选项正确的是 A.黄曲霉菌能否产生黄曲霉毒素属于相对性状 B.温度、pH等环境因素不会影响生物体的表现型 C.不能产生黄曲霉毒素的菌株的基因型都相同 D.黄曲霉毒素能够致癌属于生物的表现型 5.II型糖尿病患者体内的胰岛素浓度比正常人高，但摄入糖后，体内血糖浓度很难降至正常水平，
导致患者尿中出现葡萄糖。下列叙述错误的是 A.患者摄糖后血糖水平高的主要原因是胰高血糖素分泌量增多 B.患者细胞膜上的胰岛素受体可能受损而导致胰岛素含量升高 C.患者的原尿中葡萄糖未能被完全重吸收会导致尿量增加 D. 患者难以通过注射胰岛素的治疗方法使血糖恢复正常值 6.超氧化物歧化酶（SOD ）是一种源于生命体的活性物质，在生活实践中有非常重要的应用价值。下图为人工培育含SOD 植物新品种的过程，相关叙述正确的是 A.①过程中最常用的方法是采用显微注射技术将SOD 基因导入植物细胞 B.②、③分别表示脱分化、再分化，两个过程不需要无菌操作也可完成 C.SOD 催化O 2形成H 2O 2的机制是为该反应提供活化能 D.该育种方式利用了细胞工程和基因工程，能体现细胞的全能性 7.美洲钝眼蜱携带多种病菌，只要被它咬过的人吃到红肉，就会产生过敏反应，但吃白肉不发生过敏反应。据调查红肉中含有α-半乳糖甘酵素的成分,下列说法错误的是 A.被美洲钝眼蜱咬过后人体会产生抗α-半乳糖甘酵素的抗体 B.美洲钝眼蜱的唾液中可能含有α-半乳糖甘酵素 C.过敏反应特点是发作迅速、反应强烈、消退较快 D.白肉中同样含有α-半乳糖甘酵素 8.豌豆蚜是利马豆的主要害虫，蝉大眼蝽可取食利马豆和豌豆蚜。研究人员施用蔬果剂处理去除部分豆荚后，检测两种动物密度的变化，结果见下表（单位：个/株，蔬果剂对以上动物无危害）。下列分析错误的是 A.用样方法对利马豆种群密度进行调查 B.施蔬果剂后豌豆蚜种群数量将呈S 型增长 C.该生态系统蝉大眼蝽属于第二、三营养级 D.据表数据可知，蝉大眼蝽主要取食豌豆蚜 9.将某种酶运用到工业生 产前，需测定使用该 物种 分组 第7天 第14天 第21天 蝉大眼蝽 对照组 0.20 0.62 0.67 实验组 0.20 0.10 0.13 豌豆蚜 对照组 2.00 4.00 2.90 实验组 2.00 8.70 22.90
天利38套高三高考能力提升卷(六)
天利38套高三高考能力提升卷（六）学校:___________姓名：___________班级：___________考号：___________ 一、单选题 1．下列说法正确的是（） A．某金属能发生光电效应，当入射光的颜色不变而增大光照强度时，逸出的光电子的最大初动能也增大 B．若利用黄光和蓝光分别在同一装置研究光电效应，用蓝光照射时的遏止电压大于用黄光照射时的遏止电压 C．换用频率小的光照射，但入射光的强度不变，则逸出的光电子的最大初动能不变D．换用频率小的光照射，但入射光的强度不变，则从光照射到金属表面上到发射出电子的时间明显减少 2．若一个质点由静止开始做匀加速直线运动，下列有关说法正确的是（） A．某时刻质点的动量与所经历的时间成正比 B．某时刻质点的动量与所发生的位移成正比 C．某时刻质点的动能与所经历的时间成正比 D．某时刻质点的动能与所发生位移的平方成正比 3．2021年5月21日5点28分，我国在西昌卫星发射中心用“长征四号”丙运载火箭，成功将“嫦娥四号”任务中继星“鹊桥”发射升空，它是世界首颗运行于地月拉格朗日2L点的中继卫星，是为2021年底实施的“嫦娥四号”月球背面软着陆探测任务提供地月间的中继通信。地月拉格朗日2L点即为卫星相对于地球和月球基本保持静止的一个空间点，卫星永远在月球背面，距月球中心的距离设为r，距地球中心的距离约为7r，月地距离约为6r，则地球质量与月球质量比值最接近（）
A．80 B．83 C．85 D．86 4．将一个小木块和一个小钢珠分别以不同的速度，竖直向上抛出，若小木块受到的空气阻力大小跟速度大小成正比，即f kv =（其中k为常数），小钢珠的阻力忽略不计，关于两物体运动的v t-图象正确的是（取向上为正方向）（） A．B． C．D． 5．一列简谐横波沿x轴负方向传播，0 t=时刻的波形图象如图所示，此时刻开始介质中 1.0m x=的质点P经0.25s第一次回到平衡位置。则下列说法中正确的是（） A．0 t=时刻质点P向x轴正方向运动 B．简谐横波的周期为0.8s C．简谐横波传播的速度为4m/s D．质点P经过平衡位置向上运动时开始计时的振动方程为 10 10sin(cm) 3 y tπ =
【典型题】数学高考模拟试题(带答案)
【典型题】数学高考模拟试题(带答案) 一、选择题 1．已知长方体的长、宽、高分别是3，4，5，且它的8个顶点都在同一球面上，则这个球的表面积是（ ） A ．25π B ．50π C ．125π D ．都不对 2．()22 x x e e f x x x --=+-的部分图象大致是（ ） A ． B ． C ． D ． 3．设集合M={1，2，4，6，8},N={1，2，3，5，6，7},则M ?N 中元素的个数为( ) A ．2 B ．3 C ．5 D ．7 4．设01p <<，随机变量ξ的分布列如图，则当p 在()0,1内增大时，（ ） ξ 0 1 2 P 12 p - 12 2 p A ．()D ξ减小 B ．()D ξ增大 C ．() D ξ先减小后增大 D ．()D ξ先增大后减小 5．设集合{1,2,3,4,5,6}U =，{1,2,4}A =，{2,3,4}B =，则()C U A B ?等于（ ） A ．{5,6} B ．{3,5,6} C ．{1,3,5,6} D ．{1,2,3,4} 6．已知a 与b 均为单位向量，它们的夹角为60?，那么3a b -等于（ ） A 7B 10 C 13 D ．4 7．函数()ln f x x x =的大致图像为 （ ）
A ． B ． C ． D ． 8．已知复数 ，则复数在复平面内对应的点位于（ ） A ．第一象限 B ．第二象限 C ．第三象限 D ．第四象限 9．已知双曲线C ：22221x y a b -= (a ＞0，b ＞0)的一条渐近线方程为5 2 y x =，且与椭圆 22 1123x y +=有公共焦点，则C 的方程为（ ） A ．221810 x y -= B ．22145 x y -= C ．22 154 x y -= D ．22 143 x y -= 10．已知非零向量AB 与AC 满足 0AB AC BC AB AC ?? ?+?= ? ?? 且1 2AB AC AB AC ?=，则ABC 的形状是（ ） A ．三边均不相等的三角形 B ．等腰直角三角形 C ．等边三角形 D ．以上均有可能 11．已知ABC 为等边三角形，2AB =，设P ，Q 满足AP AB λ=， ()()1AQ AC λλ=-∈R ，若3 2 BQ CP ?=-，则λ=（ ） A ． 12 B 12 ± C 110 ± D ． 32 2 ± 12．设集合(){} 2log 10M x x =-<，集合{} 2N x x =≥-，则M N ?=（ ）
精品解析：北京市2020届高三高考模拟试题 (等级考试模拟试题)(解析版)
北京市2020届高三高考模拟试题(等级考试模拟试题) 可能用到的相对原子质量：H-1 C-12 N-14 O-16 Fe-56 第一部分 在每题列出四个选项中，选出最符合题目要求的一项。 1.下列制品采用的材料属于合金的是( ) A.大理石华表 B.青铜编钟 C.玻璃花瓶 D.翡翠如意 A. A B. B C. C D. D 【答案】B 【解析】 【分析】 合金是指在一种金属中加热熔合其它金属或非金属而形成的具有金属特性的物质．合金概念有三个特点：①一定是混合物；②合金中各成分都是以单质形式存在；③合金中至少有一种金属。 【详解】A．大理石的主要成分为碳酸盐，不属于合金，故A不符合题意； B．古代的编钟属于青铜器，青铜为铜锡合金，故B符合题意； C．玻璃花瓶是硅酸盐产品，故C不符合题意； D．翡翠如意的主要成分为硅酸盐铝钠，不属于合金，故D不符合题意； 答案选B。 2.下列说法不涉及氧化还原反应的是 A. 雷雨肥庄稼——自然固氮 B. 从沙滩到用户——由二氧化硅制晶体硅 C. 干千年，湿万年，不干不湿就半年——青铜器、铁器的保存 D. 灰肥相混损肥分——灰中含有碳酸钾，肥中含有铵盐 【答案】D 【解析】 【分析】
在反应过程中有元素化合价变化的化学反应叫做氧化还原反应。原电池反应可以理解成由两个半反应构成，即氧化反应和还原反应。 【详解】A. 雷雨肥庄稼——自然固氮，氮气氧化成NO，再氧化成NO2，最后变成HNO3等，有元素化合价变化，故A不选； B. 从沙滩到用户——由二氧化硅制晶体硅，硅由+4价变成0价，有元素化合价变化，故B不选； C. 干千年，湿万年，不干不湿就半年——说明青铜器、铁器在不干不湿的环境中保存时，容易发生电化学腐蚀，铜和铁容易被氧化，有元素化合价变化，故C不选； D. 灰肥相混损肥分——灰中含有碳酸钾，水解后呈碱性，肥中含有铵盐，水解后呈酸性，两者相遇能发生复分解反应，导致氮肥的肥效降低，没有元素化合价变化，故D选。 故选D。 3.下列说法正确的是 A. 18O2和16O2互为同位素 B. 正己烷和2,2?二甲基丙烷互为同系物 C. C60和C70是具有相同质子数的不同核素 D. H2NCH2COOCH3和CH3CH2NO2是同分异构体 【答案】B 【解析】 【详解】A.18O2和16O2是指相对分子质量不同的分子，而同位素指具有相同质子数，但中子数不同的元素互称同位素，A项错误； B. 正己烷的分子式C6H14，2,2?二甲基丙烷即新戊烷分子式是C5H12，两者同属于烷烃，且分子式差一个CH2，属于同系物，B项正确； C.核素表示具有一定的质子数和中子数的原子，C60和C70是由一定数目的碳原子形成的分子，显然，C项错误； D. H2NCH2COOCH3和CH3CH2NO2是分子式分别为C3H7O2N和C2H5O2N，分子式不同，显然不是同分异构体，D项错误。 故答案选B。 4.全氮类物质具有高密度、超高能量及爆炸产物无污染等优点，被称为没有核污染的“N2爆弹”。中国科学家 N 和N5－两种离子)的胡炳成教授团队近日成功合成全氮阴离子N5－，N5－是制备全氮类物质N10(其中含有5 重要中间体。下列说法中不正确的是( )
2019年山东省高考生物模拟试题与答案
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高考数学模拟试题及答案.pdf
六大注意 1 考生需自己粘贴答题卡的条形码 考生需在监考老师的指导下，自己贴本人的试卷条形码。粘贴前，注意核对一下条形码上的姓名、考生号、考场号和座位号是否有误，如果有误，立即举手报告。如果无误，请将条形码粘贴在答题卡的对应位置。万一粘贴不理想，也不要撕下来重贴。只要条形码信息无误，正确填写了本人的考生号、考场号及座位号，评卷分数不受影响。 2 拿到试卷后先检查有无缺张、漏印等 拿到试卷后先检查试卷有无缺张、漏印、破损或字迹不清等情况，尽管这种可能性非常小。如果有，及时举手报告；如无异常情况，请用签字笔在试卷的相应位置写上姓名、考生号、考场号、座位号。写好后，放下笔，等开考信号发出后再答题，如提前抢答，将按违纪处理。 3 注意保持答题卡的平整 填涂答题卡时，要注意保持答题卡的平整，不要折叠、弄脏或撕破，以免影响机器评阅。 若在考试时无意中污损答题卡确需换卡的，及时报告监考老师用备用卡解决，但耽误时间由本人负责。不管是哪种情况需启用新答题卡，新答题卡都不再粘贴条形码，但要在新答题卡上填涂姓名、考生号、考场号和座位号。 4 不能提前交卷离场 按照规定，在考试结束前，不允许考生交卷离场。如考生确因患病等原因无法坚持到考试结束，由监考老师报告主考，由主考根据情况按有关规定处理。 5 不要把文具带出考场 考试结束，停止答题，把试卷整理好。然后将答题卡放在最上面，接着是试卷、草稿纸。不得把答题卡、试卷、草稿纸带出考场，试卷全部收齐后才能离场。请把文具整理好，放在座次标签旁以便后面考试使用，不得把文具带走。 6 外语听力有试听环 外语考试14:40入场完毕，听力采用CD播放。14：50开始听力试听，试听结束时，会有“试听到此结束”的提示。听力部分考试结束时，将会有“听力部分到此结束”的提示。听力部分结束后，考生可以 开始做其他部分试题。 高考数学模拟试题 (一)
2019高三语文高考模拟试题
尤溪五中2018—2019学年高三语文第一次模拟考试 语文试题 命题： 第Ⅰ卷（阅读题，共70分） 甲必考题 一、现代文阅读（共9分，共3小题，每小题3分） 阅读下面的文字，完成1~3题。 黄土与中央集权 黄土给中国带来的一种影响是：黄河中游由北至南将黄土地区割成两半，其纵长500英里，同时黄河也在内地接受几条支流的汇入，其结果是黄河的流水中夹带着大量的泥沙。 通常河流的水内夹带着5％的泥沙已算相当的多，南美洲的亚马孙河夏季里可能高至12％，而黄河的流水曾经有过46％的纪录。其中一条支流曾在一个夏天达到了难以相信的含沙量63％。所以黄河经常有淤塞河床，引起堤防溃决泛滥，造成大量生命与财产损失的可能。这河流的水量在洪水期间和枯水期间幅度的变化又大，更使潜在的危机经常恶化。按理说来，有一个最好坐落于上游的中央集权，又有威望动员所有的资源，也能指挥有关的人众，才可以在黄河经常的威胁之下，给予应有的安全。当周王不能达成这种任务时，环境上即产生极大的压力，务使中枢权力再度出现。 《春秋》中有一段记载，提及公元前651年，周王力不能及，齐侯乃召集有关诸侯互相盟誓，不得修筑有碍邻国的水利，不在天灾时阻碍谷米的流通。这“葵丘之盟”在约350年后经孟子提及，可是他也指出，盟誓自盟誓，会后各国仍自行其是。《孟子》一书中提到治水的有11次之多，可见其重要性。其中一段更直接指责当时人以洪水冲刷邻国的不道义。我们不难从中看出洪水与黄河暨黄土地带牵连一贯的关系。孟子所说天下之“定于一”，也就是只有一统，才有安定。由此看来，地理条件和历史的发展极有关系，尤其是当我们把地理的范围放宽，历史的眼光延长时，更是如此。 中国地区的降雨量极有季候性，大致全年雨量的80％出现于夏季3个月内，在此时期风向改变。并且中国的季节风所带来之雨与旋风有关，从菲律宾海吹来含着湿气的热风需要由西向东及东北之低压圈将之升高才能冷凝为雨。于是以百万千万计之众生常因这两种变数之适时遭遇与否而影响到他们的生计。如果这两种气流不断的在某一地区上空碰头，当地可能雷雨为灾，而且有洪水之患。反之，假使它们一再的避开另一地区，当地又必干旱。前人缺乏这种气象的知识，只在历史书里提及六岁必有灾荒，12年必有大饥馑。其实在1911年民国成立前之2117年内，共有水灾1621次和旱灾1392次，其严重经过官方提出。亦即无间断的平均每年有灾荒1.392次。 在《春秋》里经常有邻国的军队越界夺取收成的记载。饥荒时拒绝粮食之接济尤其可以成为战争的导火线。《孟子》书中提到饥荒17次之多。公元前320年，魏国的国君因为他的辖地跨黄河两岸，曾告诉亚
2018高考高三生物模拟试题及答案
高三理综（生物）高考模拟试题（六） 一、选择题：（共6小题，每小题6分，共36分。每小题只有一个选项符合题目要求） 1．生物膜是细胞的重要结构，许多代谢反应可以在生物膜上进行。下列相关叙述错误的是( ) A．细胞生物膜的主要组成成分是磷脂和蛋白质 B．叶绿体内膜上含有多种光合色素，能够吸收并转化光能 C．线粒体内膜可以进行有氧呼吸第三阶段的反应 D．有丝分裂过程中，核膜的消失与形成分别发生在前期和末期 2．将芹菜叶片置于一定浓度的KNO3溶液中，鲜重变化与时间关系如图所示。下列有关叙述正确的是( ) A．本实验可证明K+、3 NO-的跨膜运输方式与水的跨膜运输方式不同 B．0～8 min内，芹菜叶肉细胞的相对表面积增大 C．15 min后，芹菜叶肉细胞鲜重不再增加，说明细胞内外浓度相等 D．芹菜叶肉细胞从8 min开始吸收无机盐离子，使细胞液浓度大于外界溶液浓度 3．图甲表示镰刀型细胞贫血症的发病机理，图乙表示基因型为AABb的生物的一个体细胞有丝分裂过程中一条染色体上的基因，图丙表示两种类型的变异。下列说法正确的是( ) A．镰刀型细胞贫血症是由基因突变造成的，在光学显微镜下观察细胞无法判断是否患病B．图甲中转运缬氨酸的tRNA上的反密码子为GUA C．图乙中两条姐妹染色单体上的基因不同是基因突变或交叉互换造成的 D．图丙中①属于基因重组，②属于染色体结构变异 4．一个患某遗传病（由一对等位基因控制）的女性患者甲和一个表现正常的男性结婚后，生了一儿一女，且都患该遗传病。下列有关叙述正确的是( ) A．女性患者甲和该表现正常的男性都是纯合子 B．该遗传病可能是伴X染色体隐性遗传病 C．患该遗传病的子女一定可以从女性患者甲获得致病基因 D．该遗传病在后代子女中的发病率相同5．某人去医院抽血化验体内甲状腺激素与促甲状腺激素的含量，结果发现甲状腺激素水平明显低于正常值，促甲状腺激素水平明显高于正常值，下列表述错误的是( ) A．该个体一定会出现代谢活动增强、神经系统兴奋性增强等症状 B．甲状腺激素的分泌存在分级调节，促甲状腺激素可以促进甲状腺激素的分泌 C．该个体相关激素水平异常可能是由于缺碘引起 D．促甲状腺激素释放激素和甲状腺激素都能调节促甲状腺激素的分泌 6．下列关于生物学实验及研究方法的叙述，错误的是( ) A．用样方法调查蚜虫的种群密度时，取样的关键是随机取样 B．用标志重捕法调查某动物种群密度时，标志物部分脱落会使估算值偏大 C．用血细胞计数板观察酵母菌种群数量的变化，应先在计数室上滴加菌液，再盖上盖玻片D．研究土壤中小动物类群丰富度常用取样器取样的方法进行采集、调查 29．（9分）如图为某实验小组为研究细胞的结构和功能设计的四组实验，其他相关实验条件适宜。 请回答下列问题： （1）为了研究线粒体或叶绿体的功能，需要将细胞中的线粒体或叶绿体分离出来，常用的方法是法。 （2）图甲装置和图乙装置的实验现象有何区别？，请分析产生差异的主要原因：。 （3）图丙装置在适宜的光照下（填“能”或“不能”）产生氧气。若光照条件下突然停止二氧化碳供应，ATP的合成速率将（填“增大”、“不变”或“减小”）。 图丁装置同正常的细胞相比呼吸速率有何变化？，请分析其原 因：。 30．（10分）如图为人体的血糖调节模型，据图回答下列问题： （1）该血糖调节模型属于模型。图中下丘脑是血糖调节的中枢，同时也 是、的中枢。 （2）当机体血糖含量降低时，胰高血糖素分泌量增加，促进血糖升高，此时血糖的来源为。在血糖调节的过程中，胰岛素的作用结果会反过来影响胰岛素的分泌，
2020年高三数学 高考模拟题(试卷)带答案
伽师县第一中学2018-2019学年第一次高考模拟考试 数学（国语班） 考试时间：120分钟 姓名： ___ __ ___ 考场号：______座位号：__ 班级：高三（ ）班 一、选择题：本题共12小题，每小题5分，共60分。 1、已知集合， ，则集合 （ ） A. B. C. D. 1、【解析】 根据题意，集合，且 ， 所以 ，故选B ． 2、设复数满足，则 ( ) A ． B. C. D. 2、【答案】A 3、已知函数,若,则 ( ) A. B. C. 或 D. 0 3、【解析】 由函数的解析式可知，当时，令，解得； 当时，令，解得（舍去）， 综上若，则，故选D ． 4、某几何体的三视图如图所示，则该几何体的体积为 A. B. C. D. 1 4、【解析】由三视图可得该几何体为底面是等腰直角三角形，其中 腰长为1，高为2的三棱锥，故其体积为， 故选A. 5、某校高二年级名学生参加数学调研测试成绩（满分120分） 分布直方图如右。已知分数在100110的学生有21人，则 A. B. C. D. 5、【解析】由频率分布直方图可得，分数在100110的频率为， 根据，可得．选B ． 6、执行如图的程序框图，若输出的值是，则的值可以为（ ） A. 2014 B. 2015 C. 2016 D. 2017 6、【解析】①，；②，；③，；④，；， 故必为的整数倍. 故选C. 7、设等比数列的公比，前n 项和为，则 （ ） A. 2 B. 4 C. D. 7、【解析】由题 ，故选C ． 8、设，满足约束条件，则的最小值为（ ） A. 5 B. -5 C. D. 8、【解析】 画出约束条件所表示的平面区域，如图所示， 由图可知，目标函数的最优解为， 由，解得 ，所以 的最小值为 ， 故选B ． 9、的常数项为 A. 28 B. 56 C. 112 D. 224 9、【解析】的二项展开通项公式为.令，即.常数项为， 故选C ． ()327,1 { 1ln ,1x x f x x x --<=?? ≥ ??? ()1f m =m =1e e 1 e e 1m <3271m --=0m =1m ≥1ln 1m ?? = ? ?? 1m e =()1f m =0m =13122 3 111112323 V =????={}n a 2q =n S 4 2 S a =15217 2 ()44211512 S q a q q -==-
2018届高三语文高考模拟试题1
高三语文高考模拟试题（1） 一、现代文阅读（35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。 谈起法律工具主义，还要追溯到公元前5世纪左右，管仲提出依法治国。此后，法律就被公认为是治理国家的工具。所谓治世之具，也可以叫治国之具，法律的工具主义从这儿就开始了。到唐朝，魏征做了一个形象的比喻。他说国家好像是一匹奔马，骑在马上的骑手就是皇帝，皇帝手中拿的鞭子就是法律，这样就把法律工具主义更加形象化。既然古代的法律是君主手中的鞭子，这个法律必然受到君主的影响。遇有开明的君主就能够发挥法律治世功能的作用，遇到昏君那就没有办法发挥法律的治世功能。历史事实也确实如此。唐太宗时期就是个讲究法制的时代。当时，针对官吏假冒伪造履历，唐太宗说了一句话，以后再遇到假冒履历的官员必死不赦。不久，又发现了假冒履历的事情，大理寺少卿戴胄据法断流，没有断死刑，唐太宗就非常不高兴，说我说过以后再有一定要处死。这时戴胄讲了一句话，他说什么是法，法是“国家布大信于天下”，不能因为皇帝一时喜怒的意见，使法丧失了大信，这样说服了唐太宗。唐太宗说了一句话，法乃天下之法非朕一人之法。所以皇帝也遵法了，这就发挥了法律的工具主义的作用，这是遇到了明主。 遇到了昏君的时候，就是法制的败坏。隋文帝本来是很重视法律的，但是到晚年任意为法。比如说六月天要判处犯人死刑，大家就劝解他从汉以来都秋冬行刑，六月天不能判死刑。他说六月天为什么不能判死刑呢？六月天还有雷霆震怒，雷还会击人呢，我是皇帝我也可以杀人。所以法律工具主义是人治下的法制，遇到明主确实起到了治世的功能，但是遇到昏君的时候便不能发挥积极作用。法律工具主义不仅影响了整个古代社会，也包括近代社会。想起用法就把法拿出来，不想用法就把法收起来。所以今天我们要牢固树立依法治国的法律权威主义的观念，就必须肃清法律工具主义的残余影响。 法与改革的关系就是古人所说的改制与更法。春秋战国时期处于社会大变动时期，其经济体制改革和政治体制改革是联在一起的。到汉以后，专制制度牢固建立起来，谈改革多半都是经济体制改革。无论是先秦的也好，以后的也好，体制改革总是和法制密切联系在一起。也就是说，成功的改制，成功的改革都是和法制相向而行。举一个大家知道的例子，就是商鞅变法。商鞅变法就经济体制改革来说，是建立一家一户的封建的生产方式。政治体制改革是废除世卿制度，建立军功爵制。这次改革借助于法律，颁布了许多新法。开阡陌，封疆令，废除了过去的土地国有制。颁布二十等军功爵令，奖励首功，废除世卿世禄。这些法律明确地提出改革的内容和方向，对改革起了引导作用。其次商鞅也利用法律扫除或者是减除阻碍改革的旧势力。把反对改革的旧贵族，甚至太子的师傅处以肉刑，借以推动改革。最后是运用法律来巩固改革的成果。这些成果得到了秦国百姓的拥护，所谓秦民大悦。尽管商鞅被处以死刑，但其法未败。所以改制与更法密切相关，成功的例子都是改制与更法相向而行。1．下列关于原文内容的理解和分析正确的一项是。（3分） A．用法律来治理国家的认识起源很早，法律作为治国之具，从它用来治理国家那天起，就形成了法律工具主义。 B．魏征用比喻来阐释法律工具主义，他说国家好像是一匹奔马，骑手就是皇帝，皇帝手中拿着鞭子，就是法律。 C．在古代要发挥法律治国之具的作用，皇帝至关重要。因为皇帝一时喜怒的意见会使法律失去它应有的信用。 D．戴胄能够依法断案，没有判假冒履历的官员死刑，他认为“法乃天下之法”，非皇帝一人之法，不能随意变更。 2．下列对原文论证的相关分析不正确的一项是。（3分） A．文章先追溯法律工具主义源头，指明我国在很早时候就有人提出了依法治国的主张。 B．文章第一段引用官员履历造假事件，论证古代社会君主对法律工具主义所起的作用。 C．文章第二段，以隋文帝为反面事例，论证君主不依法行事随意变更法律造成的恶果。 D．文章第三段，在论法与改革的关系时，运用商鞅变法，阐明改革与变法应相向而行。 3．根据原文内容，下列说法不正确的一项是。（3分）
高三生物模拟试题带答案
1．下列有关细胞结构和功能的叙述，错误的是( ) A．细胞的功能绝大多数基于化学反应，这些反应发生于细胞的特定区域 B．经胞吐方式运出细胞的不都是大分子也有小分子 C．经高尔基体加工的蛋白质可以留在细胞内发挥作用 D．神经纤维内外两侧的Na＋浓度差是依靠其离子通道维持的 2．右图是研究物质A和物质B对某种酶催化活性影响的曲线。下列叙述错误的是( ) A．底物浓度的高低不会改变酶的催化活性 B．增大底物浓度不能消除物质A对该种酶的影响 C．增大底物浓度可以消除物质B对该种酶的影响 D．物质B能通过破坏酶的空间结构使酶变性而降低反应速率 3．下列关于动物细胞有丝分裂的叙述，正确的是( ) A．分裂间期有核DNA和中心体的复制 B．分裂间期核DNA含量和染色体组数都加倍 C．纺锤体形成于分裂前期，消失于分裂后期 D．染色单体形成于分裂前期，消失于分裂后期 4．组织液中K＋浓度急速降低到一定程度会导致膝跳反射减弱。下列解释合理的是( ) A．传出神经元兴奋时膜对Na＋的通透性增大B．传出神经元兴奋时膜对K＋的通透性增大C．可兴奋细胞产生的动作电位的峰值增大D．可兴奋细胞静息电位的绝对值增大 5．下列关于种群、群落和生态系统的叙述，正确的是( ) A．五点取样法适合调查灌木类行道树上蜘蛛的种群密度 B．就食性而言，杂食性鸟类的数量波动小于其他食性的鸟类 C．就生态系统结构而言，生态瓶的稳定性取决于物种数 D．变色龙变化体色，主要是向同类传递行为信息 6．生物体内某基因被选择性表达过程如右图所示。下列有关叙述，正确的是( ) A．在解旋酶作用下DNA分子双螺旋解开 B．转录区域DNA的U应与RNA的A配对 C．该过程不可发生在真核细胞的细胞核中 D．该mRNA翻译出的两条肽链氨基酸数量不同 1．下列有关生物体内的物质运输的叙述，正确的是（） A．细胞内囊泡的运输过程中存在囊泡膜与靶膜的识别，这可能与囊泡膜上的蛋白质有关B．氨基酸的跨膜运输和被转运到核糖体上都离不开载体蛋白 C．蛋白质可通过核孔自由进出细胞核 D．人体内的细胞都是通过协助扩散的方式吸收葡萄糖的
(完整word)2017江苏高三英语高考模拟试卷
2017高三英语高考模拟试卷 第I 卷（选择题共85分） 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。 例：How much is the shirt? A. ￡19.15. B. ￡ 9.18. C. ￡ 9.15. 答案是C。 1. What is the possible relationship between the speakers? A. Classmates. B. Colleagues. C. Teacher and student. 2. What is the problem with Joan? A. She suffers from a headache. B. She has an upset stomach. C. She catches a bad cold. 3. What did the speakers plan to do? A. Go for a walk. B. Have a picnic. C. Play a game. 4. Why does Jack have to work on Sunday? A. To prepare for his lecture. B. To finish his paper. C. To support his family. 5. What are the speakers talking about? A. A crazy driver. B. New traffic rules. C. A traffic accident. 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。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各个小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6、7题。 6. Where does the conversation most likely take place? A. In a hotel. B. In an airport. C. In a theater. 7. How much will the man pay? A. $1,208. B. $1,218. C. $1,280. 听第7段材料，回答第8、9题。 8. Where does the man like to travel most? A. The Western United States. B. The Central United States. C. The Southern United States. 9. Which does the woman think is the worst for travel? A. The car’s breaking down. B. The traveler’s getting lost. C. The phone’s poor signal.