2020学年度上学期六校协作体高三期初联合考试
英语试题
本试卷共150分，共页，答题时间100分钟。
第一部分听力（略）
第二部分阅读理解（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳答案。
A
Summer Activities
Experience the romance of Paris with an unforgettable night out that combines three of the top tours in the City of Lights. Choose from dinner at the Eiffel Tower’s unique restaurant against the night sky, at Les Ombres restaurant, a particular meal aboard a dining cruise down the Seine River or cap off the night with a Parisian cabaret show at the Moulin Rouge nightclub.
21. Which activity will you choose if you want to see cabaret show?
A. Eiffel Tower Dinner
B. Seine River Cruise Dinner
C. Les Ombres restaurant Dinner
D. Moulin Rouge Show
22. What will the visitors do at the end of the Seine River dinner cruise?
A. visit the Louvre
B. visit the Eiffel Tower
C. visit the Notre Dame cathedral
D. visit the district of Montmartre
23. How much does the Les Ombres restaurant Dinner cost?
A. $282.62
B. $313.37
C. $318.10
D. $348.84
B
What can be better than a sweet treat with health benefits? As it happens, our favourite February food, chocolate, has a few shinning characteristics. It comes from the Theobroma cacao tree (food for the Gods), from a bean that grows on that tropical tree. Chocolate originated in Mexico and Central and South America, but West Africa now produces most of the world’s cocoa. Look for fair trade chocolate that meets environmental and labour standards at natural foods markets in Kitsilano and the West End, at Karmavore in New Westminster and at Nature’s Fare Markets throughout the province.
Dark or semisweet chocolate is typically a vegan(素食) product. Because chocolate contains antioxidants（抗氧化剂） that prevent the oxidation （氧化）of LDL (bad) cholesterol（胆固醇）, it has gained a reputation of being beneficial for our heart health. Eaten in an appropriate amount, chocolate may lower blood pressure.
Chocolate is also a source of iron –a “precious metal” when it comes to human health. As part of red blood cells, iron plays a central role in
transporting oxygen to the body and carrying away the waste product carbon dioxide. Each day, we lose tiny amounts of iron in cells that are missing from skin and the inner lining of the intestine(肠壁). If our intake is not enough to replace our losses, a tired feeling and sensitivity to cold may develop. With further consuming, people feel exhausted, chilly and even headaches; the skin may appear pale. Since iron absence is such an obvious condition and easily diagnosed, if you have any doubts about your iron level, have a lab test done.
We are good at recycling iron, however, losses must be replaced. Two of the Chocolate Butter Balls in the recipe(食谱) below will provide one quarter of the recommended intake of eight mg iron for the day.
24. Which region produces most of the world’s cocoa now?
A. Mexico
B. Central America
C. South America
D. West Africa
25. Why is chocolate beneficial for our heart health?
A.It contains antioxidants
B.It comes from the cacao tree.
C.It originates in Mexico.
D.It is a sweet treat.
26. What does “chilly” in the third paragraph mean?
A. easy to be angry
B. having a fever
C. sensitive to cold
D. feeling tired
27. From which is the text probably taken?
A. A biology textbook.
B. A health magazine.
C. A research paper.
D. A travel brochure.
C
According to a Pew Research Center report from November 2020, “71% of those 10-18 turn to the internet as a main news source.” Another Pew report
found from 2020 says that on an average day, 29 percent of young people were “newsless” meaning they did not get any news, from traditional platfor ms, mobile phones, or even social networks.
Despite the fact that both my husband and I are in journalism, my husband as a design editor and myself as a writer, I have often wondered if our four sons would grow up to read printed pages with their own children someday.
I got my answer last week when my failure to renew us living in a newspaper desert for two weeks. Normally we get both The Virginian-Pilot (the paper for which my husband works) and The Christian Science Monitor Weekly print edition. Our four sons have grown up with a variety of print newspapers available daily. That has changed slightly since our youngest, Quin, 10, has also become an online news tracker.
However, it wasn’t until the newspapers stopped coming to our doorstep seven days a week that I learned how deeply attached they all are to the printed, paper, page. That’s when we decided to make a list of what we have come to rely on newspapers to do cheaply and immediately.
Here’s the list we made together of what our newspaper is used for beyond learning the news itself: as an umbrella when caught in rain; to stuff in wet shoes overnight to dry; to stuff in hats to keep their shape; to stuff under doors and in cracks to stop cold wind from coming in; to wallpaper for a doll house (my dad di d that once)….
Despite the growing list of household uses, my sons’ love for reading the paper before it becomes cage liner has helped me to realize that there is still hope that our kids and future generations will continue to value the printed news as more than just a means to a crafting project end, but to getting a more touchable grasp on the issues they may face in life.
28. What is the Pew Research Center report probably about?
A. Children’s news source.
B. Quality of journalism.
C. Children’s after-class activities.
D. Parent-child relationships.
29. When did the author learn how deeply attached her children are to newspapers?
A. our four sons would grow up to read printed pages with their own children
B. our youngest, Quin, 10, has also become an online news addict
C. the newspapers stopped coming to our doorstep seven days a week
D. we decided to make a list of what we have come to rely on newspapers
30. Which is not on the list of using newspapers for household?
A. to wallpaper for a doll house.
B. to get news from social networks.
C. to act as an umbrella when caught in rain.
D. to stuff under doors and in cracks to stop cold wind coming in.
31. How should children and future generations continue to value the newspaper?
A. using it as a means to a crafting project end.
B. relying on it to do cheaply and immediately.
C. growing up with a variety of print newspapers available daily.
D. getting a more touchable grasp on the issues they may face in life.
D
You already know that making a good first impression can go a long way. But forget all the advice you’ve received about dressing to impress or putting on a cheesy smile. It turns out that the true secret to building a lasting connection reaches much deeper than what you wear.
According to Amy Cuddy, a Harvard Business School professor who has
researched first impressions for more than 15 years, everyone asks two questions when they meeting someone new: Can I trust this person? And can I respect this person?
Both questions help you measure a person’s wa rmth and competence, respectively. But, Cuddy says, you should put gaining your peers’ trust over winning their respect—even in a workplace setting. “If someone you’re trying to influence doesn’t trust you, you’re not going to get very far; in fact, you might even draw suspection because you come across as a controller,” Cuddy wrote in her book Presence: Bringing Your Boldest Self to Your Biggest Challenges. “A warm, trustworthy person who is also strongly admired, but only after you’ve established trust do es your strength become a gift rather than a threat.”
But that’s not the only way you can start off on the right foot with a stranger. Your physical appearance matters, too. A 2020 study by psychologist Leslie Zebrowitz of Brandeis University found that people use four clues to judge your face: babyfacedness, familiarity, fitness, and emotional resemblance. While you can’t control all of these factors, you can improve your “emotional resemblance” by using body language that builds trust naturally.
The next time you meet someone new, focus on gaining their trust—not winning them over with a firm handshake.
32. What’s the main misunderstanding described in the first paragraph?
A. dressing to impress.
B. putting on a cheesy smile.
C. making a good first impression.
D. building a lasting connection.
33. Which is more important in a workplace setting according to Amy Cuddy?
A. gaining your peers’ trust.
B. winning your peers’ respect.
C. trying to influence your peers.
D. drawing your peers’ suspection as a controller.
34. What does Leslie Zebrowitz suggest in a 2020 study?
A. You can control your “fitness”.
B. You can control your “familiarity”.
C. You can improve your “babyfacedness”.
D. You can improve your “emotional resemblance”.
35. What is the best title for the text?
A. Judge one by a firmly-made handshake
B. Judge one by a naturally-built trust
C. Judge one by the first impression
D. Judge one by the physical appearance
第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
__36__ When someone tells you something that is true, but leaves out important information that should be included, he can give you a false picture.
For example, someone might say, “I just wo n a hundred dollars on the lottery (彩票). It was great. I took that dollar ticket back to the store and turned it in for one hundred dollars!”
__37__ Maybe, maybe not. We then discover that he bought $200 worth of tickets, and only one was a winner. He’s re ally a big loser!
He didn’t say anything that was false, but he left out important information on purpose. That’s called a half-truth. __38__
Some politicians often use this trick. Let’s say that during Governor
Smith’s last term, her state lost one millio n jobs and gained three million jobs. __39__ One of her opponents says, “During Governor Smith’s term, the state lost one million jobs!” that’s true. However, and honest statement would have been, “During Governor Smith’s term, the state had a net gain of two million jobs.”
Advertisers will sometimes use half-truths. __40__ An advertisement might say, “Nine out of ten doctors advised their patients to take Yucky Pills to cure toothache.” It fails to mention that they only asked ten doctors and nine of them work for the Yucky Company.
This kind of deception happens too of often. It’s a sad fact of life: Lies are lies, and sometimes the truth can lie as well.
A．This guy’s a winner, right?
B．Then she seeks another term.
C．Do you know of anyone who uses the truth to deceive?
D．Half-truths are not technically lies, but they are just dishonest. E．Half truths are aimed at economic and social science academics F．It’s against the law to make false statements so they try to mislead you with truth.
G．When it comes to advertisements, we must all use our intelligence and not be a slave to them!
第三部分语言知识运用（共两节，满分45分）
第一节（共20小题：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。
Experts say boredom is good for kids．It forces them to be creative，41 their imaginations and helps them discover new things．A(n) 42 in point is 13-year-old Luke Thill from Dubuque, Iowa.
Luke was 43 of playing video games and riding his bike, so he decided to build a tiny house in his backyard instead．He made money from cutting lawns(草坪)and 44 exchanged some services，such as gaining the help of an electrical engineer 45 sweeping his garage．Luke also 46 spare materials from his grandmother’s house and other 47 materials from his neighbors for some of the windows and the door．
The 89-square—foot home cost $1，5 00 to build and 48 18 months．Inside there’s a kitchenette，a back sitting room，a table and a mounted(镶嵌的)TV，and an upstairs bedroom can be easily 49 by stairway．
Although Luke did the 50 and learned how to do all the work．he had his father’s 51 throughout the project．Greg Thill was very happy that his son learned to stay on 52 and deal with grown-ups． 53 ，he had some simple rules when Luke 54 the house：“You 55 the money．You build it．And you own it．’’
Luke is now in love with 56 . He has a YouTube channel and hopes to 57 other kids to start building． 58 ，he wants to build a bigger tiny house to live in，but for now，he 59_ in his new home a few nights a week，does homework there，and uses it to take a 60 from his twin brother．41．A．changes B．ignores C．improves D．weakens 42．A．method B．explanation C．procedure D．case 43．A．tired B．fond C．confident D．guilty 44．A．thus B．even C．still D．anyhow 45．A．in exchange for B．in praise for C．in support of D．in place of 46．A．updated B．ordered C．removed D．used
47．A．recycled B．cheap C．new D．raw 48．A．spent B．took C．saved D．wasted 49．A．supported B．accessed C．held D．1anded 50．A．research B．housework C．experiment D．discovery 51．A．permission B．help C．control D．order 52．A．credit B．business C．budget D．duty 53．A．Therefore B．Besides C．Rather D．However 54．A．finished B．decorated C．started D．painted 55．A．borrow B．donate C．raise D．distribute 56．A．books B．videos C．riding D．building 57．A．inspire B．press C．command D．warn 58．A．Luckily B．Eventually C．Frequently D．Strangely 59．A．brings out B．1eaves out C．hangs out D．puts out 60．A．ride B．risk C．chance D．break
第二节（共10小题；每小题1. 5分，满分15分）
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
In recent years, many original Chinese children's novels and picture books, with moving stories and Chinese elements, __61__ (reach)great heights in the international markets. Children's books have clocked 7.3 million volumes, __62__
(account) for 50.33 percent of all books exported.
Three factors have __63__(great) contributed to the __64__(grow): the depth of the story, traditional Chinese elements and emotions of the characters.
The meaning of children's books lies in conveying the profound connotation (内涵)behind the story. Through the unique interpretation of the humanity and the environment, __65__(write) share the same feelings with Chinese and Western readers.
Cao Wenxuan, __66__ is the writer of Bronze and Sunflower, even won Hans Christian Andersen Award. The English version of the book was published in 2020 by a British company, __67__ republished in 2020. It was included in "the voice of the world -- the world's__68__(beautiful) novel series".
The book tells the story of the growing relationship__69__city girl, Sunflower, and country boy, Bronze. The author displays the extreme struggle of the characters in __70__ face of hardship, and describes the true, the good and the beautiful in human nature with vigor(活力) and warmth.
第四部分写作（共两节，满分35分）
第一节短文改错（共10小题；每小题1分，满分10分）
假定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：在错的词下划一横线，并在该词下面写出修改的词。
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。
A neighbor told us about a trip he took with his 3-years-old son. It was the
first time the father and the boy have been away by themselves. The first night their spent in a hotel, the father moved his bed closely to the boy’s and when they were all ready to sleep, he turned the light. After a few minutes, a little voice said, “It surely is dark, isn’t it?” “No,” said the father, “It’s pretty dark, and everything is all right.” There was silent for a few more minutes, and then a small hand reache d over and took the father’s hand, “ I’ll just hold your hand,” said the little boy, “in case of you get frightened.”
第二节书面表达（满分25分）
假定你是李华，将参加学校举行的英文演讲比赛，已写好演讲镐。给教你英语口语一年并已回国一个月的外教Mr. Daniel写封邮件，请他帮你审核稿件并做出必要的修改。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
高三期初联考答案：
阅读：DBA DACB ACBD CADB CADBF
完型：41．C 42．D 43．A 44．B 45．A 46．D 47．A 48．B 49．B 50．A
51．B 52．C 53．D 54．C 55．C 56．D 57．A 58．B 59．C 60．D
语填：61.have reached 62.accounting 63.greatly 64.growth 65.writers 66.who 67.and 68.most beautiful 69.between 70.the
改错：3-year-old have-had their-they closely-close all-both turned out No-Yes and-but silent-silence in case
书面表达：
Dear Mr. Daniel,
How time flies! It’s been a month since you went back home after a year’s teaching us spoken English. How are you recently?
I’m writing to ask you for h elp. I will attend the annual English Speech Competition held in our school next week, and I have just completed my speech draft. However, I’m not quite sure about the sentences and structures used.
I know you are an expert in this field, so would you be kind enough to spare some time to go through them and do some necessary correction for me? The details are in the attachment.
Best wishes to you and your family!
Yours,
Li Hua
2016年辽宁省部分重点中学协作体高三模拟考试 数学（理科）试卷 2016.4.22 参考学校：东北育才大连八中等 第I 卷(选择题60分） 一、选择题：本大题共12个小题，每小题5分，共60分．每小题的选项中只有一项是正确的． 1.已知集合{|33},{|(4)0}A x x B x x x =-<<=-<，则A B =U A ．(0,3)B ．(3,4)-C ．(0,4)D ．()3,4 2.设i 是虚数单位，若复数()11i a a R i ++∈-是纯虚数，则a = A.2- B.1- C.0 D.1 3.在等差数列}{n a 中，已知,13,2321=+=a a a 则=++654a a a A.40 B.42 C.43 D.45 4.在△ABC 中，∠C=90°，)1,(k =,)3,2(=,则k 的值是 A.5 B.－5 C. 32 D.32 - 5.为了规定工时定额，需要确定加工零件所花费的时间，为此进行了5次试验，得到5组数据 ),(),,(),,(),,(),,(5544332211y x y x y x y x y x .根据收集到的数据可知20=x ，由最小二乘法求得回归 直线方程为486.0?+=x y ，则=++++54321y y y y y A.60B.120C.150D.300 6.已知点)3 1,(a 在幂函数b x a a x f )106()(2+-=的图象上,则函数)(x f 是 A.奇函数 B.偶函数 C.定义域内的减函数 D.定义域内的增函数 7.如图，正方体1111ABCD A B C D -中，E 为棱1BB 的中点，用过点1,,A E C 的平面截去该正方体的上半部分，则剩余几何体的左视图为
2018—2019学年度上学期六校协作体高三期初联合考试 英语试题 命题学校：北镇高中命题人：白雁冰校对人：李慧刘红梅 本试卷共150分，共页，答题时间100分钟。 第一部分听力（略） 第二部分阅读理解（共两节，满分40分） 第一节（共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳答案。 A Summer Activities Experience the romance of Paris with an unforgettable night out that combines three of the top tours in the City of Lights. Choose from dinner at the EiffelTower’s unique restaurant against the night sky, at Les Ombres restaurant, a particular meal aboard a dining cruise down the SeineRiver or cap off the night with a Parisian cabaret show at the Moulin Rouge nightclub.
21. Which activity will you choose if you want to see cabaret show? A. Eiffel Tower Dinner B. Seine River Cruise Dinner
C. Les Ombres restaurant Dinner D. Moulin Rouge Show 22. What will the visitors do at the end of the SeineRiverdinner cruise? A.visit the Louvre B. visit theEiffelTower C. visit the Notre Dame cathedral D. visit the district of Montmartre 23. How much does the Les Ombres restaurant Dinner cost? A. $282.62 B. $313.37 C. $318.10 D. $348.84 B What can be better than a sweet treat with health benefits? As it happens, our favourite February food, chocolate, has a few shinning characteristics. It comes from the Theobroma cacao tree (food for the Gods), from a bean that grows on that tropical tree. Chocolate originated in Mexico and Central and South America, but West Africa now produces most of the world’s cocoa. Look for fair trade chocolate that meets environmental and labour standards at natural foods markets in Kitsilano and the West End, at Karmavore in New Westminster and at Nature’s Fare Markets throughout the province. Dark or semisweet chocolate is typically a vegan(素食) product. Because chocolate contains antioxidants（抗氧化剂） that prevent the oxidation （氧化）of LDL (bad) cholesterol（胆固醇）, it has gained a reputation of being beneficial for our heart health. Eaten in an appropriate amount, chocolate may lower blood pressure. Chocolate is also a source of iron –a “precious metal” when it comes to human health. As part of red blood cells, iron plays a central role in transporting oxygen to the body and carrying away the waste product carbon dioxide. Each day, we lose tiny amounts of iron in cells that are missing from skin and the inner lining of the intestine(肠壁). If our intake is not enough
2019-2020学年辽宁省沈阳市五校协作体高一（上）期中物理试卷 一、选择题（1-7为单选，8-12为多选，全选对得4分，漏选得2分，选错或多选不得分，共48分） 1．（4分）在物理学发展过程中，有许多科学家做出了突出贡献，关于科学家和他们的贡献，下列说法正确的是（）A．胡克用“理想实验”推翻了亚里士多德的“力是维持物体运动的原因”的观点 B．平均速度、瞬时速度和加速度等描述运动所需要的概念是牛顿首先建立的 C．伽利略利用小球在斜面上运动的实验和逻辑推理研究出了落体的运动规律 D．笛卡尔发现了弹簧弹力和形变量的关系 2．（4分）下列说法不正确的是（） A．当物体的大小和形状对研究的问题没有影响或影响可以忽略时，物体可视为质点 B．平均速度的大小一定等于初速度和末速度的平均值 C．北斗导航卫星定位提供的是被测物体的位置 D．时间间隔确切地说就是两个时刻之间的间隔，反映的是某一事件发生的持续程度 3．（4分）在平直公路上行驶的a车和b车其位移﹣时间（x﹣t）图象分别为图中直线a和曲线b，已知b车的加速度恒定。3秒时直线a和曲线b刚好相切。则下列说法正确的是（） A．a车做匀速运动且其速度为v a＝m/s B．b车加速度大小为2m/s2 C．t＝3时，a车和b车相遇，但此时速度不等 D．t＝1s时，b车的速度为10m/s 4．（4分）一个质点做匀变速直线运动，依次经过a、b、c、d四点。已知经过ab、bc和cd的时间分别为t、2t、4t，ac和bd的位移分别为x1和x2，则质点运动的加速度为（） A．B．
C．D． 5．（4分）下列说法中正确是（） A．弹簧不受力时，它的劲度系数为零 B．由μ＝可知，动摩擦因数与滑动摩擦力成正比，与压力成反比 C．物体静止时，对水平支持物的压力就是物体的重力 D．用细线将物体悬挂起来，静止时物体的重心一定在悬线所在的直线上 6．（4分）2019年7月16日，在韩国光州世界游泳锦标赛跳水项目男女混合团体决赛中，中国组合林珊/杨健获得该项目金牌。将林珊进入水中后向下的运动视为匀减速直钱运动，该运动过程的总时间为t。林珊入水后第二个时间内的平均速度为v1，全程的平均速度为v2，则为（） A．5：4B．3：5C．4：5D．5：3 7．（4分）如图所示，质量均为m的a、b两物体，放在上、下两个固定的水平挡板之间，物体间用一竖直放置的轻弹簧连接，在b物体上施加水平拉力F后，两物体始终保持静止状态，已知重力加速度为g。则下列说法正确的是（） A．a物体对水平挡板的压力大小可能为2mg B．b物体可能受4个力的作用 C．b物体所受摩擦力的大小为F D．a物体所受摩擦力的大小为F 8．（4分）如图甲所示，质量相等的物块A和B用一个轻质弹簧连接，竖直放置在水平地面上，最初系统静止。现用力缓慢拉木块A直到木块B刚好离开地面，测得木块B对地面的压力N相对应两木块之间的距离L，作出N ﹣L图象如图乙，下列说法正确的是（）
2020学年度下学期省六校协作体高一期中考试 英语试题 本试卷分为选择题和非选择题两部分，总分150分，考试用时100分钟。 选择题部分 第一部分听力（共两节，满分30分）略 第二部分阅读理解（共两节，满分35分） 第一节（共10小题；每小题2.5分，满分25分） 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项，并在答题纸上将该项涂黑。 A On the first day of my new high school, I almost had a nervous breakdown. Everything about the school seemed so difficult. When I got home, my parents said, “You're nervous and that's okay. Everyone is afraid of high school.” I denied it. I wanted to be strong, so I refused to let anyone know about my fear, even my closest friends. On the first day I was late for every class and was constantly lost. The school seemed like a puzzle that I couldn't figure out. Was this how the whole year was going to be? I didn't think I could rise to this challenge, especially carrying a huge backpack that I could hardly lift. It was so big that I could knock someone out with it!
辽宁重点中学协作体2019年高考重点-理 综 辽宁省重点中学协作体 2018年高考模拟考试 理综试题 考前须知 1、答题前考生务必先将自己的姓名、准考证号填写在答题卡上认真核对条形码上的姓名、 准考证号并将条形码粘贴在答题卡的指定位置上。 2、选择题答案使用2B铅笔填涂如需改动用橡皮擦擦干净后再选涂其它答案标号非选择题答案使用0.5毫米的黑色中性签字笔或碳素笔书写字体工整、笔迹清晰。 3、请按照题号在各题的答题区域黑色线框内作答超出答题区域书写的答案无效。 4、保持卡面清洁不折叠不破损。自己求作答并用2B铅笔在答题卡上把所选题目对应的题号涂黑。可能用到的相对原子质量 H1C12N14O16Na23S32Ca40Mn55 第一卷 【一】选择题此题共13小题每题6分在每题给出的4个选项中只有一项为哪一项符合题目要求的。 1、细胞的各种膜性结构间相互联系和转移的现象称为膜流。以下关于“膜流”的表达正确的选项是 A、神经递质的释放、质壁分离和吞噬细胞摄取抗原都表达了膜流 B、大肠杆菌和酵母菌均能发生膜流现象 C、膜流的方向只能是内质网→高尔基体→细胞膜 D、膜流可参与细胞不同结构间或细胞内外的物质转运 2、以下实验的操作过程与目的均正确的选项是 3、将纯种的二倍体伞花山羊草甲〔AA〕与近缘纯种黑麦乙〔EE〕杂交后，经多代选育出如 下图所示的新品种丙〔图中的同源染色体，黑色部分是来自乙的染色体片段，甲没有此片段〕。以下相关表达不正确的选项是 A、杂交选育过程中可能发生过DNA上碱基对的替换 B、杂交选育过程中一定发生过基因重组 C、丙品种的产生为生物的进化提供了原材料 D、丙品种与纯种黑麦乙杂交，假设后代所有染色体正常联会， 那么共能产生3种配子
2019-2020学年辽宁省六校协作体高三（上）期初生物试卷 一、选择题（共30小题，每小题1.5分，满分45.0分） 1. 下列有关酵母菌、蓝藻、小球藻的叙述，正确的是（） A.都具有以核膜为界限的细胞核 B.都以DNA作为细胞的遗传物质 C.都只能通过有氧呼吸获得能量 D.都能通过有丝分裂增加细胞数量 【答案】 B 【考点】 原核细胞和真核细胞的形态和结构的异同 【解析】 【解答】 解：A.蓝藻没有核膜包围的细胞核，A错误； B.酵母菌、蓝藻、小球藻都具有细胞结构，都以DNA为遗传物质，B正确； C.酵母菌属于兼性厌氧型，蓝藻和小球藻属于有氧呼吸型，但也能进行无氧呼吸，C错误； D.酵母菌和小球藻可通过有丝分裂增加细胞数量，而蓝藻属于原核细胞，只能进行二 分裂，D错误。 故选：B。 2. 生物体内某些重要化合物的元素组成和功能关系如图所示。其中X、Y代表元素，a、 b、c是组成A、B、C三种生物大分子的单体，这三种单体的结构可用d或e表示。据图 分析正确的是（）
A.人体细胞中单体a、b的结构可用d表示，人体中d的种类有4种 B.大肠杆菌细胞内单体c的结构可用e表示，e的种类约有20种 C.a，b是生物体内遗传信息的携带者，C是生命活动的主要承担者 D.A、B的多样性由d中的n充分体现，C的多样性由e中的R充分体现 【答案】 B 【考点】 核酸的结构和功能的综合 蛋白质在生命活动中的主要功能 蛋白质分子的化学结构和空间结构 【解析】 分析图形： 1.本题的突破口是A→B→C，进而推测出A是DNA，B是信使RNA，C是蛋白质；a表示脱氧核苷酸，b表示核糖核苷酸，c表示氨基酸； 2.d表示核苷酸，n为含氮碱基，f表示五碳糖，m表示磷酸； 3.e表示氨基酸。 【解答】 解：A.根据图形分析已知a表示脱氧核苷酸，b表示核糖核苷酸，d表示核苷酸，人体内的核苷酸有8种，A错误； B.根据图形分析已知c表示氨基酸，组成生物体的氨基酸的种类大约有20种，B正确； C.A是DNA，是生物体内遗传信息的携带者，C是蛋白质，生命活动的主要承担者，C 错误； D.C蛋白质的多样性除了与e中的R有关，还与氨基酸的数目、排列顺序和肽链的空间结构有关，D错误。 故选：B。 3. 下列关于细胞成分、结构和功能的叙述，正确的是（） A.动物细胞膜的组成成分中含有糖蛋白、糖脂、磷脂和胆固醇等 B.人体剧烈运动时肌肉细胞产生的CO2量比消耗的O2量多 C.线粒体中不会出现ATP的水解和DNA聚合酶的催化 D.有氧呼吸时葡萄糖进入线粒体须经过两层生物膜 【答案】 A 【考点】 线粒体、叶绿体的结构和功能 细胞膜的成分 细胞呼吸的过程和意义
2020届辽宁省五校协作体高三上学期联合模拟英语试题学校:___________姓名：___________班级：___________考号：___________ 一、阅读选择 Below you will find a profile of each gap year program. If there is a specific program you are interested in or a question you have regarding these programs, please feel free to contact them directly. Youth International Since 1997, Youth International has provided many people with the most exciting and educational experience of their life. It is a learning program that combines international travel, inter-cultural exchange, home stays, volunteer community service work and outdoor adventures. Phone:1-720-270-3323 Carpe Diem Education Through volunteer service, travel and cultural exchange, students of Carpe Diem Education receive a personal insight into themselves and their culture. We specialize in guiding summer and semester programs for high school students. Each course is carefully crafted to develop leadership and self-awareness within our students, who return home better prepared to be leaders in thought and action. Phone:503-285-1800 Center for Interim Programs Founded in 1980, the Center for Interim Programs is the first independent gap year organization in America. Based on students' interests and budget, our experienced teachers help make individual course choices including low cost volunteer options, language programs, research trips, and so on. We are committed to helping students find more experiences of formal education and work. Phone:413-585-0980 EF Gap Year An EF Gap Year offers students the ability to explore several countries where you will learn a language, volunteer for a good cause, gain international work experience 12-week semester or 26-week academic. Choose between a personalize your program to meet your learning. You can then by deciding where, when, and how you wish to stand interests own. Our
2021届辽宁省六校协作体高三生物第一次联考试题 第Ⅰ卷选择题（共35小题，共50分） 一、选择题（本题共35小题，第1-5题每题1分，第6-35题每题1.5分，共50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．禽流感病毒的遗传物质是单链RNA，病毒表面覆盖有两种不同的纤突，纤突具有抗原特性。纤突中的一种是红细胞凝集素(HA)，现已发现十几种，另一种是神经氨酸酶(NTA)，至少有9种，它们都是蛋白质。禽流感有H5N1、H7N9、H9N2等多种类型，下列说法错误的是( ) A．HA及NTA出现多种类型是单链RNA发生改变的结果 B．H5N1、H7N9、H9N2等多种类型的出现与染色体变异无关 C．H7N9亚型禽流感病毒侵染人体后，可在人体内环境中繁殖 D．禽流感病毒和其他生物共用一套遗传密码 2．组成生物体的细胞既具有多样性，又具有统一性。下列叙述正确的是( ) A．不同物种的细胞所含有机分子的结构都不同 B．同一个体的不同细胞，其元素含量都相同 C．DNA分子在原核细胞与真核细胞的主要存在形式不同 D．细胞学说揭示了细胞的统一性和多样性，以及生物体结构的统一性 3.幽门螺旋杆菌（简称Hp）是已知能够在人胃中生存的唯一微生物种类，可引起胃炎、消化道溃瘍等。尿素呼气实验是目前诊断Hp感染准确性最简单的方法，受试者口服13C 标记的尿素胶囊后，尿素在Hp产生的脲酶作用下水解为NH 3和13CO 2 ，通过测定受试者吹 出的气体是否含有13CO 2 作出判断。下列叙述错误的是( ) A. 绝大多数微生物不能在人胃内生存是因为不适应强酸环境 B. 检测Hp用了同位素标记法，所用13C对人体应该是无害的 C. 脲酶可降低尿素水解反应的活化能 D. Hp细胞内，脲酶需要在内质网和高尔基体中进行加工 4．诺贝尔生理学或医学奖获得者屠呦呦在抗疟药物研发中，发现了一种药效高于青蒿素的衍生物蒿甲醚，分子结构如下图。下列与蒿甲醚的元素组成完全相同的物质是（）A．纤维素 B．叶绿素 C．胰岛素 D．生长素 5．生物科学是一门实验科学。下列关于实验的叙述，正确的是( ) A．斐林试剂甲液与双缩脲试剂B液合理搭配使用可使梨提取液显紫色 B．切下的花生子叶薄片用50%酒精处理，更便于染色 C．缩小光圈的同时使用凹面反光镜可以更清晰地观察到颜色较浅的生 物材料 D．含糖量较高的生物材料，用斐林试剂检测后呈现的砖红色也较明显 6．生物体的生命活动离不开水。下列关于水的叙述，错误的是( ) A．在最基本生命系统中，H 2 O有自由水和结合水两种存在形式 B．由氨基酸形成多肽链时，生成物H 2 O中的氢来自氨基和羧基 C．有氧呼吸时，生成物H 2 O中的氢来自线粒体中丙酮酸的分解 D．H 2O在光下分解，产生的[H]将固定的CO 2 还原成(CH 2 O) 7．阐明生命现象的规律，必须建立在阐明生物大分子结构的基础上。下列有关生物大分子核酸和蛋白质的叙述正确的是( )
辽宁省部分重点中学协作体2020年高考模拟考试 物理试卷 本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，其中第Ⅱ卷第33—38 题为选考题，其它题为必考题。考生作答时，将答案答在答题卡上，在本试卷上答题无效。考试结束后，将本试卷和答题卡一并交回。 注意事项： 1.答题前，考生务必先将自己的姓名、准考证号填写在答题卡上，认真核对条形码上的姓名、准考证号，并将条形码粘贴在答题卡的指定位置上。 2．选择题答案使用2B铅笔填涂，如需改动，用橡皮擦擦干净后，再选涂其它答案标号；非选择题答案使用0.5毫米的黑色中性（签字）笔或碳素笔书写，字体工整、笔迹清楚。 3．请按照题号在各题的答题区域（黑色线框）内作答，超出答题区域书写的答案无效。4．保持卡面清洁，不折叠，不破损。 5．做选考题时，考生按照题目要求作答，并用2B铅笔在答题卡上把所选题目对应的题号涂黑。 可能用到的相对原子量：H：1 C：12 O：16 Na：23 Zn：65 Ni：59 第Ⅰ卷 二、选择題：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14~17题只有一项符合题目要求，第18~21 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。 1.如图为玻尔理论的氢原子能级图，当一群处于激发态n=3能级的氢原子向低能级跃迁时，发出的光中有两种频率的光能使某种金属产生光电效应，以下说法中正确的是（） A. 这群氢原子向低能级跃迁时能发出6种频率的光 B. 这种金属的逸出功一定小于10.2 eV C. 用波长最短的光照射该金属时光电子的最大初动能一定大于3.4eV
D. 由n=3能级跃迁到n=2能级时产生的光一定能够使该金属产生光电效应 【答案】B 【解析】 【详解】AB．由n=3能级的激发态向低能级跃迁时，辐射出三种频率光子的能量分别为12.09eV、10.2eV、1.89eV，结合题意，根据光电效方程可知，这种金属的逸出功一定小于10.2eV，故A错误，B正确； C．用波长最短即光子能量为12.09eV的光照射该金属时，其最大初动能最小值为 k 12.09eV10.2eV 1.89eV E=-= 则其最大初动能一定大于1.89eV，故C错误； D．由n=3能级跃迁到n=2能级时产生的光子能量为1.89eV，由上面分析可知只有两种频率的光能发生光电效应，因此一定不能够使该金属产生光电效应，故D错误。 故选B。 2.如图所示，一个“V”形槽的左侧挡板A竖直，右侧挡板B为斜面，槽内嵌有一个质量为m 的光滑球C．“V”形槽在水平面上由静止开始向右做加速度不断减小的直线运动的一小段时间内，设挡板A、B对球的弹力分别为F1、F2，下列说法正确的是( ) A. F1、F2都逐渐增大 B. F1、F2都逐渐减小 C. F1逐渐减小，F2逐渐增大 D. F1、F2的合外力逐渐减小 【答案】D 【解析】 光滑球C受力情况如图所示： F2的竖直分力与重力相平衡，所以F2不变；
2019—2020 学年度上学期省六校协作高三期初考试 英语试题 命题校：丹东四中命题人：贾凤玲校对人：姚兰 本试卷分三部分，卷面分数120分。总分150分。考试用时100分钟。 第一部分阅读理解（共两节，满分40分） 第一节（共15小题：每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。 A Amazing Stories of Animals Acting Just Like Humans ◆Horses are picky eaters Horses have an even better sense of smell than humans do. When horses raise their noses and open their nostrils (鼻孔), their nervous system allows them to sense smells we can’t sense. This might explain why they refuse dirty water and carefully move around meadows, eating only the tastiest grasses, experts say. ◆Whale says thanks In 2011, a whale expert spotted a humpback whale trapped in a fishing net and spent an hour freeing it. Afterward, in an hour-long display of thanks, the whale swam near their boat and leaped into the air about 40 times. ◆Pandas like to be naughty Is there anything more lovely than a baby panda, except maybe a human baby? In fact, baby pandas sometimes behave like human babies. They sleep in the same positions and value their thumbs. Pandas are shy by nature for its shy behaviors such as covering its face with a paw of ducking its head when confronted by a stranger. ◆A cat honors its owner Paper towels, and a plastic cup are just a few of the gifts that Toldo, a devoted three-year-old gray-and-white cat, has placed on his former owner Iozzelli Renzo’s grave every day since the man died in September 2011. Renzo adopted Toldo from a shelter when the cat was three months old, and the two formed an inseparable bond. After Renzo passed away, Toldo followed the coffin to the cemetery, and now “stands guard” at the grave for hours at a time. 21. What can horses do to pick the most delicious grasses? A. Feel them. B. Smell them. C. Observe them. D. Taste them.
2020届辽宁省沈阳市高三上学期五校协作体期中联考 地理试卷 ★祝考试顺利★ 考试时间：90分钟考试分数：100分 试卷说明：本试卷分第Ⅰ卷选择题（1－30题，共45分）和第Ⅱ卷(非选择题，31－33题，共55分)。答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。作答时，将答案写在答题纸上，写在本试卷上无效。 第Ⅰ卷(选择题共45分) 下图示意某流域人口分布情况，据此完成1－3题。 1.该流域人口分布特点是 A.空间分布比较均匀且比较稠 密 B.3550-3650 m的百米高程最为 密集 C.距河8—10 km分布人口最多 D.高程4500m以上人口密度变化剧烈 2.该流域可能位于 A.巴西高原 B.南部非洲 C.藏南谷地 D.北美大草原 3.影响该流域人口距河流不同距离空间分布差异的主要因素是 A.水能资源分布 B.地形地势和坡向 C.交通通达度 D.取用水方便程度 20世纪50年代，随着科学技术的发展，日本科学家发明了地膜覆盖技术并应用于农业生产。近年来，我国西北地区采用黑白条带地膜覆盖法(如下图所示)，即在垄中间用透光性高的白色塑料薄膜，垄两侧用透光性低的黑色塑料薄膜，以此提高农作物产量。据此完成4－6题。 4.20世纪50年代，日本科学家发明的地膜覆盖技术最可能首先应用于 A.水稻种植 B.樱桃种植 C.蔬菜种植 D.棉花种植 5.垄两侧铺设黑色塑料薄膜可以 A.降低土壤湿度 B.抑制垄两侧杂草滋生 C.改善土壤肥力 D.促进作物光合作用 6.垄中间的白色塑料薄膜能够保持土壤中的水分，关键在于其能够 A.增加大气降水 B.减少地表下渗 C.增加地表径流 D.减少水分蒸发 绿道是一套不受机动车干扰的绿色步行通道系统，连接城市内各个大小绿地。目前，我国城市绿道建设局限于局部公园、道路绿化，与城市整体景观及市民休憩活动联系不强，呈散点状分布，景观质量有待提高。据此完成7－8题。 7.建设城市绿道的目的主要是 A.改善城市景观，提升环境质量 B.构建新型道路系统，改善城市交通状况 C.加强城乡联系，促进城乡一体化 D.合理规划，提高土地利用效率 8.目前，我国城市绿道呈散点状分布的主要原因是 A.城区人口密度较大 B.城市规划建设滞后 1 / 7
辽宁六校协作体2021届高三第一次联考 数学试题 一、单项选择题：本大题共8小题，每小题5分，共40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．“{1,2}m ∈”是“ln 1m <”成立的（ ） A ．充分非必要条件 B ．必要非充分条件 C ．充要条件 D ．既非充分也非必要条件 2．函数1 ()lg 2 x f x x =-的零点所在区间为（ ） A ． (0,1) B ．(1,2) C ． (2,3) D ． (3,4) 3．某医院拟派甲、乙、丙、丁四位专家到3所乡镇卫生院进行对口支援，若每所乡镇卫生院至少派1位 专家，每位专家对口支援一所医院，则选派方案有（ ） A.18种 B.24种 C.36种 D.48种 4．若R x ?∈，使得(2)a x x ≤-成立，则实数a 的最大值为（ ） A ．B ．2 C ．1 D ．0 5．已知cos (0)()(1)1(0) x x f x f x x π≤?=? -+>?，则44 ()()33f f +-的值为（ ） A ．1- B ．1 2 - C ．0 D ．1 6．已知函数()f x 的部分图象如图所示，则()f x 的解析式可能为（ ） A ．sin ||()2cos x f x x = + B ．sin ln || ()2cos x x f x x ?=+ C ．cos ln ||()2cos x x f x x ?=+ D ．cos ()x f x x = 7．为了普及环保知识，增强环保意识，某中学随机抽取 30名学生参加环保知识竞赛，得分（10分制）的频数分布表 如下：
设得分的中位数e m ，众数0m ，平均数x ，下列关系正确的是（ ） A ．0e m m x == B ．0e m m x =< C ．0e m m x << D ．0e m m x << 8．已知函数()f x 的定义域为R ，且(1)f x +是偶函数，(1)f x -是奇函数，()f x 在[1,1]-上单调递增， 则（ ） A ．(0)(2020)(2019)f f f >> B ．(0)(2019)(2020)f f f >> C ．(2020)(2019)(0)f f f >> D ．(2020)(0)(2019)f f f >> 二、多项选择题：本大题共4小题，每小题5分，共20分。在每小题给出的四个选项中，有多项符合题目要求。全部选对的得5分，部分选对的得3分，有选错的得0分。 9．设全集R U =，集合2 {|,R}A y y x x -==∈，集合2 {|20,R}B x x x x =+-<∈，则（ ） A ．A ∩B=(0,1) B ．(2,)A B =-+∞ C ．A ∩ B=(0,+∞) D ． A ∪ B=R 10．已知函数()()(0,0,0)f x Acos x A ω?ω?π=+>><<的图象的一个最高点为,312π?? - ??? ，与之相邻的一个对称中心为,06π?? ??? ，将()f x 的图象向右平移6π个单位长度得到函数()g x 的图象，则（ ） A ．()g x 为偶函数 B ．()g x 的一个单调递增区间为5,1212ππ?? - ??? ? C ．()g x 为奇函数 D ．()g x 在0,2π?? ???? 上只有一个零点 11．下列说法正确的是（ ） A.将一组数据中的每个数据都乘以同一个非零常数a 后，方差也变为原来的a 倍； B.若四条线段的长度分别是1，3，5，7，从中任取3条，则这3条线段能够成三角形的概率为1 4 ； C.线性相关系数r 越大，两个变量的线性相关性越强；反之，线性相关性越弱； D.设两个独立事件A 和B 都不发生的概率为1 9 ，A 发生且B 不发生的概率与B 发生且A 不发生的概率相同，则事件A 发生的概率为 23 . 12．定义：若函数()F x 在区间[],a b 上的值域为[],a b ，则称[],a b 是函数()F x 的“完美区间”．另外，
2019年辽宁省重点中学协作体高考模拟考试化学试题7．下列各组物质的分类正确的是 A．胶体：雾、银氨溶液、蛋白质溶液B．非电解质：己烷、乙酸乙酯、淀粉 C，糖类：葡萄糖、麦芽糖、纤维素D．同系物：正戊烷、异戊烷、新戊烷 8．下列有关实验说法或做法合理的是 A．某溶液中加入碳酸钠溶液产生白色沉淀，再加盐酸沉淀消失，说明该溶液中有Ca2+ B．鉴别CO2和SO2可以用品红溶液也可以用硝酸钡溶液 C．测氯水的pH，可用玻璃棒蘸取氯水滴在pH试纸上，待其变色后和标准比色卡比较D．除去C2H50H中的CH3COOH，先加足量的氢氧化钠溶液，再分液 9．下列排列顺序正确的是 ①热稳定性：H2O>HF>H2S ②原子半径：Na>Mg>O ③碱性：NaOH>Mg(OH)2>Al(OH)3④结合质子(H+)能力：OH->HCO3->CH3COO- A．①②③B．②③④C．①③④D．①②④ 10．在容积为2.0 L的密闭容器内，物质D在T ℃时发生反应，其 反应物和生成物的物质的量量随时间t的变化关系如右图，下列 叙述错误的是 A．从反应开始到第一次达到平衡时，A物质的平均反应速率为 0. 067mol/(L·min) B．根据右图该反应的平衡常数表达式为 ()() () 2 2 C A C B k C D = C．若在第5分钟时升高温度，则该反应的正反应是吸热反应， 反应的平衡常数增大，B的反应速率增大 D．若在第7分钟时增加D的物质的量，A的物质的量变化情况符合b曲线 11．下列叙述不正确的是 A．核电荷数等于最外层电子数的离子，其对应的元素在周期表第二周期ⅥA族 B．锂钒氧化物电池的总反应式为：V2O5+x Li→Li x V2O5。则其正极的电极反应式为：V2O5+x Li++x e-→Li x V2O5。，供电时Li+向正极移动 C．F2、C2H4、Na2O2、C2H6、H2O2都是含有非极性键的共价化合物 D．Y和Z均由元素R组成，反应Y+2I-+2H+=I2+Z+H2O，其中的R元素在地壳中含量位居第一12．常温下将醋酸钠、盐酸两溶液混合后，溶液呈中性，则混合后溶液中有关微粒的物质的量浓度关系及说法正确的是 A．c(CI-)=c(CH3COOH) B．c(Na+)= c(CH3COO-) C．c(CH3COO-)< c(CI-) D．溶液中只存在两个平衡 13．下列说法正确的是： A．已知某温度下纯水中的C(H+)=2×l0-7mol/L，据此无法求出水中C(OH-) B．已知MgCO3的K SP=6.82×l0-6，则在含有固体MgCO3的MgCl2、Na2CO3溶液中，都有c(Mg2+) =c(CO32-)，且c(Mg2+)·c(CO32-) = 6.82×106 mol2/L2 C．已知： 共价键C—C C=C C—H H—H 键能/kJ·mol-1348 610 413 436 CH3CH3
辽宁省五校协作体2018届高三上学期期中 考试语文试题 考试时间150分钟分数：150分 第Ⅰ卷阅读题 甲必考题 一、现代文阅读（9分，每小题3分） 阅读下面的文字，完成1~3题。 “腾笼换鸟”是几年前我国一些沿海地区根据当地经济发展状况和国家转变经济发展方式大战略提出的区域经济战略。由于国际金融危机冲击和经济形势变化，这一战略没有得及全面实施。有人质疑“腾笼换鸟”脱离我国的优势，迟滞地区经济发展。近年，有关议论并未停止。 对于“腾笼换鸟”的不同看法，实质上是对于是按照既有模式追求较高经济增长速度还是让经济转入新的增长轨道而宁可牺牲一部分增长速度的不同看法，也就是对于如何正确处理眼前利益与长远利益关系的不同看法。一般地讲要兼顾眼前利益与长远利益没有多少实际意义，关键是怎么兼顾、怎么把握好时机。经济学界最近兴起的关于刘易斯拐点的讨论，有助于厘清对于“腾笼换鸟”的不同看法。 刘易斯拐点是发展经济学的一个著名命题，由诺贝尔经济学奖获得者阿瑟·刘易斯提出。该理论认为，在二元经济实现工业化的过程中，随着农村劳动力向非农产业转移，农村
富余劳动力逐渐减少，最终将走向枯竭，出现一个从劳动力过剩转向劳动力短缺的转折点。这个转折点就是刘易斯拐点。当然，所谓的劳动力短缺并不是绝对短缺，而是相对短缺，表现为劳动力成本大幅度上升，不涨工资就招不到合适的员工。这个工资成本明显上升的时点就是刘易斯拐点。刘易斯拐点的存在，在日本和“亚洲四小龙”工业化的过程中都得到过验证。不过，对于人口众多的我国说是否已经到了刘易斯拐点尚有争议，因为我国还有约1亿农村劳动力需要转移到非农产业，劳动力并不缺乏。如果尚未到达刘易斯拐点，则仍然可以而且应该继续发挥低成本劳动力的优势，发展相关产业，“腾笼换鸟”似可缓行；如果刘易斯拐点已经到，“腾笼换鸟”则势在必行。 这里的关键在于怎样理解刘易斯拐点。刘易斯拐点并非意味着劳动力绝对短缺，而是表现为工资大幅度上涨。虽然我国仍有约1亿农村富余劳动力，但随着农业生产效率提高和农民收入增加，如果非农产业不大幅度提高工资水平，农民就不愿背井离乡进城务工。而一旦工资大幅度上涨，显然就是刘易斯拐点的到。从近年一些沿海地区和内地同时出现“民工荒”和“涨薪潮”等现象看，应该说刘易斯拐点在我国已经到。与南亚、东南亚一些国家相比，我国普通打工者的工资水平已经不再具有优势，甚至高于这些地区的许多国家。 在刘易斯拐点已经到，我国不再具有劳动力、资、环境