【省示范中学】安徽省肥东第二中学2019-2020学年高二上学期入学考试英语试题
安徽省肥东县高级中学2020-2021学年高二上学期期中考试英语试题 含答案
2020-2021学年高二年级第一学期期中考试英语试题注意事项：1.答卷前，考生务必将自己的姓名、考生号等填写在答题卡上。
2.回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。
如需改动，用橡皮擦干净后，再选涂其他答案标号。
回答非选择题时，将答案写在答题卡上。
写在本试卷上无效。
3.考试结束后，将本试卷和答题卡一并交回。
第一部分听力(共两节，满分30分)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 does the conversation take place?A.At the ticket office.B.On the phone.C.At the woman’s home.2.What does the man want to do?A.Chat with the woman.B.Lose some weight.C.Set up a program.3.How old is Jack?A.38.B.43.C.48.4.What can we learn from the conversation?A.Mr.Jones is busy now.B.Mr.Williams takes over Mr.Jones’s work.C.The man mistook Mr.Williams for Mr.Jones.5.What book are the speakers talking about?A.A book about funny pictures.B.A book about interesting stories.C.A book about buildings in the world.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。
2020-2021学年安徽省肥东县高二下学期期中考试英语试题Word版含答案
2020-2021学年安徽省肥东县高二下学期期中考试英语试题考试时间：120分钟第一部分听力（共两节, 满分30 分）第一节（共5 小题）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 is Fred now?A. At the restaurant.B. In the class.C. At home.2. What do the two speakers think of the opera?A. Both of them like it.B. Only the woman likes it.C. Only the man likes it.3. What about the woman's father?A. He is very old now.B. He is in poor health.C. He is upset at home.4. Why was the boy afraid that his father would scold him?A. He had broken his father's glass.B. He hadn't passed the examination.C. He had broken his mother's glass.5. What are the speakers talking about?A. A record.B. Some singers.C. A live concert.第二节（共15 小题）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, 各小题将给出5 秒钟的作答时间。
2019-2020学年合肥市第二中学高三英语第二次联考试卷及参考答案
2019-2020学年合肥市第二中学高三英语第二次联考试卷及参考答案第一部分阅读（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、D四个选项中选出最佳选项AThe history ofpop art begins with abstract art. Pop art emerged from the foundation of abstract art in the 1950s, first gaining recognition in Great Britain, then establishing itself in the United States in the 1960s.In the 1930s and 1940s, abstract art was greatly popular, but people began to hate this art form. Most abstract art produced in this era could be found in art galleries or the homes of the elite(名流), not in the homes of everyday people. Pop art sprung onto the scene as the people's art.Some art critics say pop art is a rebellion against abstract art; others say it is an extension of abstract art. You can see elements of abstract art in many pop art prints, especially those that consist of a collage（拼贴画）of images. However, some pop art pieces have nothing to do with abstract art, looking more like a photo of a popular consumer item, which impressed people deeply.Richard Hamilton and Eduardo Paolozzi were two of the first contemporary pop art pioneers recognised in Great Britain. They were a part of the Independent Group, an organised group of British artists who wanted to challenge ruling modernist approaches to culture. They recognised the value of modern advertising and comic book images. They used these popular images in art as a social commentary, often building irony and humour into their artworks, thus creating a new form of art. These pieces were mass-produced and sold at affordable prices.When pop art took off in the United States, it expanded to include a celebration of kitsch and the common images found in movies and television. Andy Wharhol is perhaps the most famous American pop art artist, known for his prints of the actress Marilyn Monroe, the singer Elvis Presley and of Campbell's soup cans. Andy Wharhol was inspired by images from advertisements and common consumer items. He also made a series of paintings which showed images of car accidents.1. Why did people dislike abstract art?A. People found it hard to understand.B. Ordinary people couldn't afford it.C. People disliked enjoying it in galleries.D. It wasn't based on everyday life.2. What impression do pop art works leave on people?A. They are a rebellion against abstract art.B. They have many elements of abstract art.C. They are created so real.D. They are products of advertisers.3. The Independent Group was set up to ________.A. introduce a new art form to the worldB. develop modern advertising furtherC. create new comic book imagesD. make British culture better knownBLast summer, I spent four months working in France, where the company I was working for put me up in a house that didn’t have Wi-Fi. I wasn’t looking forward to it.I soon discovered, however, that living in a house without Wi-Fi was easier than I expected.Contact between my friends and family was significantly reduced to the odd text message here and there. I couldn’t enjoy my usual web browsing on BBC iPlayer, social media sites, keeping up to date with the news, or even wanting to know the opening hours of shops in the new area I was in.I didn’t, however, spend a full four months without connecting to a Wi-Fi network. It was only a five minute walk to the reception where I could connect for free and spend as much time online as I wanted to at my own leisure. It made me think , though , how unnecessary it can be , how unnecessarily we rely on it—how we perhaps rely on it too much. As a person, I was more sociable. I spent more time with my housemates instead of hiding behind a computer screen. I did other things that I wouldn’t necessarily have done if I could have browsed the web at my leisure. I read more, I cooked meals for my friends, and I even tidied up more often. Dare I say it; I learned how to live without Wi-Fi. Dare I say it; I found it was easier than I had imagined.4. What was the writer’s first feeling when finding her house had no Wi-Fi?A. Unexpected.B. Angry.C. Shocked.D. Depressed.5. How did the writer keep in touch with her friends and family without Wi-Fi?A. By writing regularly.B. By text message.C. By video calls.D. By telegram.6. What was the writer’s life like without Wi-Fi?A. Dull.B. Lonely.C. Active.D. Relaxing.7. What can be a suitable title for the text?A. A life without Wi-FiB. Different views on the InternetC. The disadvantages of Wi-FiD. How to use the InternetCGetting rid of dirt, in the opinion of most people, is a good thing However, there is nothing fixed about attitudes to dirt.In the early 16th century, people thought that dirt on the skin was a means to block outdisease, as medical opinion had it that washing off dirt with hot water could open up the skin and let ills in. A particular danger was thought to lie in public baths. By 1538, the French king had closed the bath houses in his kingdom. So did the king ofEnglandin 1546. Thus began a long time when the rich and the poor inEuropelived with dirt in a friendly way. Henry IV, king ofFrance, was famously dirty. Upon learning that a nobleman had taken a bath, the king ordered that, to avoid the attack of disease, the nobleman should not go out.Though the belief in the merit(优点) of dirt was long-lived, dirt has no longer been regarded as a nice neighbor ever since the 18th century. Scientifically speaking, cleaning away dirt is good to health. Clean water supply and hand washing are practical means of preventing disease. Yet, it seems that standards of cleanliness have moved beyond science since World War II. Advertisements repeatedly sell the idea: clothes need to be whiter than white, cloths ever softer, surfaces to shine. Has the hate for dirt, however, gone too far?Attitudes to dirt still differ hugely nowadays. Many first-time parents nervously try to warn their children off touching dirt, which might be responsible for the spread of disease. On the contrary, Mary Ruebush, an American immunologist(免疫学家), encourages children to play in the dirt to build up a strong immune system. And the latter position is gaining some ground.8. The kings ofFranceandEnglandin the 16th century closed bath houses because .A. they lived healthily in a dirty environmentB. they thought bath houses were too dirty to stay inC. they considered bathing as cause of skin diseaseD. They believed disease could be spread in public baths9. Which of the following best describes Henry IV’s attitude to bathing?A. CuriousB. AfraidC. ApprovingD. Uninterested10. How does the passage mainly develop?A. By following the order of time.B. By making comparison.C. By providing examplesD. By following the order of importance.111. What is the author’s purpose in writing the passages?A. To call attention to the danger of dirt.B. To introduce the history of dirt.C. To present the change of views on dirt.D. To stress the role of dirt.DAccording to a survey, the wasteof food on the dining table occupies 10% of the total grain output.Last week, Meituan, a giant online food ordering platform, co-published a proposal with a number of business organizations, calling on restaurants to stop food waste and help develop new eating habits for customers. Following the proposal, merchants are asked to offer guidance for consumers, including reminding them during the ordering process about the taste of the ingredients, portion sizes and other information about the dishes, to helpthem avoid excessive ordering and food waste.Catering（餐饮)associations in more than 18 provinces have also joined the campaign to remove food waste. The Wuhan Catering Association proposed an “NT" ordering code for restaurants in which a group of 10 diners would only order enough for nine people. More food is only brought to the table if required. On Friday, the China Cuisine Association announced that it had teamed up with Ele. me, the Alibaba Group Holding-owned food delivery platform, to launch a "half-dish plan," encouraging restaurants to provide customers with the option to order smaller portions.Tang Zhisong, a professor at Southwest University Education School, said "Evaluating how much you can eat, how much you should buy and how to deal with the leftover is a way for young people to improve their self-management. It's also a means to teach them sharing food, caring about others, and more importantly, developing a mindset of suitability. "12. What's the purpose of the proposal mentioned in the passage?A. To change customers' attitude toward life.B. To promote a new policy on food delivery.C. To spread the idea of healthy eating.D. To encourage restaurants to reduce food waste.13. What does the underlined word “excessive" in Paragraph 2 prolably mean?A. More than enough.B. Less than required.C. Better than ever.D. Worse than before.14. Paragraph 3 is mainly developed by.A. offering analysesB. presenting a surveyC. giving examplesD. making comparisons15. What do Tang's words suggest?A. Sharing food is caring about others.B. Young people should have self-discipline.C. Reducing food waste has all-round benefits.D Saving food contributes to a sustainable society.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
安徽省肥东第二中学2019-2020学年高二数学上学期入学考试试题(PDF)答案
( ) + ( ) = ( ) = 1，∴ ( ) = ， ( ) = − ．
第 3 页，共 8 页
【解析】
1. 【分析】
根据函数成立的条件即可求出函数的定义域.本题主要考查函数定义域的求法，要求熟
练掌握常见函数成立的条件，比较基础．
【解答】
解：要使函数有意义，则 1 − > 0 ，即 3 +1>0
<1 > − ，即− < < 1，
∴函数的定义域为(− , 1)，故选 D．
2. 解：由图表可得， =
.
= 2.5， =
.
.
=，
.
由线性回归方程恒过样本中心点，可得 = 1.3 × 2.5 − 1，
当 = 1时， = 1．当 = −1时， 所以 = ( )的值域是[1,5]；
= 5．
(3)因为ℎ( ) = ( ) − = − ( + 2) + 2在[1,3]上是单调函数，
所以 ⩽ 1或 ⩾ 3，即 ⩽ 0或 ⩾ 4．
综上：当 ⩽ 0或 ⩾ 4，ℎ( ) = ( ) − 在[1,3]上是单调函数．
由 + = ( ≥ 2)，可知：数列{ }是等差数列，利用等差数列的通项公式即可
得出． 【解答】
解：由 + = ( ≥ 2)，可知：数列{ }是等差数列，
首项为 1，公差为： − = ．∴ = 1 + ( − 1) = ，∴ = ． 故选 A．
9. 【分析】
本题考查向量的三角形法则和向量的数乘运算，属于基础题．
安徽省肥东县第二中学2019-2020学年高二(普通班)上学期第二次月考数学(文)试题 Word版含答案
肥东二中2019-2020学年度第一学期第二次月考高二年级数学试卷（文）一、选择题（本大题共12小题，共60.0分）1.在平面直角坐标系中，直线y=-2的倾斜角为（）A. B. C. 0 D. 不存在2.在空间直角坐标系中，点P（1，2，3）与点Q（2，1，2）之间的距离为（）A. B. 3 C. D. 13.如图，某几何体的三视图，其中正视图是腰长为2的等腰三角形，俯视图是半径为1的半圆，则该几何体的体积为( )A.B.C.D.4.若直线l1：（m+3）x+4y+3m－5=0与直线l2：2x+（m+5）y－8=0平行，则m的值为（）A. B.或 C. D.5.已知直线和不同的平面，下列命题中正确的是（）A. B.C. D.6.以点为圆心，且与y轴相切的圆的标准方程为A. B.C. D.7. 平面α截球O 的球面所得圆的半径为1，球心O 到平面α的距离为，则此球的体积为（ ）A. B. C. D.8. 若点P 为两条异面直线l ，m 外的任意一点，则（ ）A. 过点P 有且仅有一条直线与l ,m 都平行B. 过点P 有且仅有一条直线与l ,m 都垂直C. 过点P 有且仅有一条直线与l ,m 都相交D. 过点P 有且仅有一条直线与l ,m 都异面 9. 圆上的点到直线的距离最大值是（ ）A. 2B.C. D.10. 圆与圆的位置关系为( )A. 相离B. 外切C. 相交D. 内切11. 如图所示，在棱长为1的正方体ABCD -A 1B 1C 1D 1中，P 是A 1B 上一动点，则AP +D 1P 的最小值为（ ）A. 2B.C.D.12. 如图，四边形ABCD 是圆柱的轴截面，E 是底面圆周上异于A 、B 的一点，则下面结论中错误的是（）A. B.C. D.面面BCE二、填空题（本大题共4小题，共19.0分）13.水平放置的△ABC的直观图如图所示，已知A 'C’= 3，B'C'= 2，则△ABC中AB边上的中线的长度为________.14.直线关于点对称的直线的方程是_________________.15.已知a，b，c是三条不同的直线，α，β是两个不同的平面，①若α∥β，a⊂α，b⊂β，则a∥b；②若a∥b，b⊥c，则a⊥c；③若α∥β，a⊂β，则a∥α；④若a∥β，b∥β，a⊂α，b⊂α，则α∥β．则上述命题中正确的序号为的______．16.已知两定点,,如果动点P满足,则点P的轨迹方程为_______三、解答题（本大题共6小题，共72.0分）17.已知平面内两点，．Ⅰ求过点且与直线平行的直线的方程；Ⅱ求线段的垂直平分线方程．18.如图是一个以A1B1C1为底面的直三棱柱被一平面所截得到的几何体，截面为ABC，已知A1B1＝B1C1＝2，∠A1B1C1＝90°，AA1＝4，BB1＝3，CC1＝2，求：(Ⅰ)该几何体的体积；(Ⅱ)截面ABC的面积．19.已知点，圆.（1）求过点的圆的切线方程；（2）若直线与圆相交于、两点，且弦的长为，求的值.20.如图，在正方体ABCD-A1B1C1D1中，E为AC的中点．（1）求证：A1E∥平面B1CD1；（2）求证：平面B1CD1⊥平面AA1C1C．21.已知圆和，（1）求圆和圆的公共弦长；（2）求以圆和圆的公共弦为直径的圆的方程.22.如图，矩形ABCD所在平面与以BC为直径的圆所在平面垂直，O为BC中点，M是圆周上一点，且∠CBM=30°，AB=1，BC=2．（1）求异面直线AO与CM所成角的余弦值；（2）设点P是线段AM上的点，且满足AP=λPM，若直线CM∥平面BPD，求实数λ的值．肥东二中2019-2020学年度第一学期第三次月考高二年级数学参考答案(理)选择题 1——5 BCBCD 6——12 DCDDD CD13，14. -1/215.60度16. 417.1819202122.。
安徽省合肥市肥东县二中2019-2020学年高二生物上学期入学考试试题(含解析)
- 1 - 安徽省合肥市肥东县二中2019-2020学年高二生物上学期入学考试试题（含解析） 一、单选题 1.下列有关人体细胞生命历程的叙述，正确的是（ ） A. 细胞分化能使细胞中细胞器、tRNA的种类和数量发生改变 B. 衰老细胞的细胞核体积增大，细胞内的水分减少 C. 高度分化的细胞中，其核DNA不存在解旋现象 D. 有丝分裂间期，细胞有适度的生长，其相对表面积增大 【答案】B 【解析】 【分析】 1、细胞分化是指在个体发育中，由一个或一种细胞增殖产生的后代，在形态，结构和生理功能上发生稳定性差异的过程。细胞分化的实质：基因的选择性表达。 2、衰老细胞的特征：（1）细胞内水分减少，细胞萎缩，体积变小，但细胞核体积增大，染色质固缩，染色加深；（2）细胞膜通透性功能改变，物质运输功能降低；（3）细胞色素随着细胞衰老逐渐累积；（4）有些酶的活性降低；（5）呼吸速度减慢，新陈代谢减慢。 3、有丝分裂不同时期的特点：（1）间期：进行DNA的复制和有关蛋白质的合成；（2）前期：核膜、核仁逐渐解体消失，出现纺锤体和染色体；（3）中期：染色体形态固定、数目清晰；（4）后期：着丝点分裂，姐妹染色单体分开成为染色体，并均匀地移向两极；（5）末期：核膜、核仁重建、纺锤体和染色体消失。 【详解】A、细胞分化能使细胞中细胞器的种类和数量发生改变，但不会改变tRNA的种类和数量，A错误； B、衰老细胞的细胞核体积增大，细胞内的水分减少，B正确； C、高度分化的细胞中会进行蛋白质的合成，而蛋白质的合成包括转录和翻译两个步骤，其中转录过程中会发生解旋，C错误； D、有丝分裂间期，细胞有适度的生长，其相对表面积减小，D错误。 故选B。
2.如图是观察洋葱根尖有丝分裂实验的部分操作，下列评价合理的是（ ） - 2 -
A. 剪取洋葱根尖2～3mm，因为该区域属于根毛区，细胞有丝分裂旺盛 B. 该实验步骤中唯一错误的是在②和③之间缺少用清水漂洗这一环节 C. 在观察的图象中，b属于分生区的细胞，细胞已死亡 D. 解离的目的是使细胞分散开来 【答案】C 【解析】 【分析】 观察洋葱根尖细胞有丝分裂并制作装片步骤是： 1、解离：剪取根尖2-3mm（最好在每天的10-14点取根，因此时间是洋葱根尖有丝分裂高峰期），立即放入盛有质量分数为15%的氯化氢溶液和体积分数为95%的酒精溶液的混合液（1：1）的玻璃皿中，在室温下解离3-5min。 2、漂洗：待根尖酥软后，用镊子取出，放入盛有清水的玻璃皿中漂洗约10min。 3、染色：把洋葱根尖放进盛有质量浓度为0.01g/mL或0.02g/mL的龙胆紫溶液（或醋酸洋红液）的培养皿中，染色3-5min。 4、制片：取一干净载玻片，在中央滴一滴清水，将染色的根尖用镊子取出，放入载玻片的水滴中，并且用镊子尖把根尖弄碎，盖上盖玻片，在盖玻片再加一载玻片。然后，用拇指轻轻地压载玻片。取下后加上的载玻片，既制成装片。 【详解】A、剪取洋葱根尖2～3mm，因为该区域属于分生区，细胞有丝分裂旺盛，A错误； B、该实验步骤中错误1是在②和③之间缺少用清水漂洗这一环节，错误2是在染色后不需要用清水漂洗，B错误； C、分生区的细胞呈正方形，排列紧密，有的细胞正在分裂，故在观察的图像中，b属于分生区的细胞，由于经过了解离过程，细胞已死亡，C正确； D、解离的目的是使组织细胞彼此分离，压片的目的是使组织细胞分散开，D错误。 故选C。
2024学年安徽省肥东县重点中学十校联考最后英语试题含答案
2024学年安徽省肥东县重点中学十校联考最后英语试题含答案注意事项1．考生要认真填写考场号和座位序号。
2．试题所有答案必须填涂或书写在答题卡上，在试卷上作答无效。
第一部分必须用2B 铅笔作答；第二部分必须用黑色字迹的签字笔作答。
3．考试结束后，考生须将试卷和答题卡放在桌面上，待监考员收回。
Ⅰ. 单项选择1、—What do you know about bamboo?—Maybe bamboo has more uses than ________ in the world.A．any plant B．all the plants C．any other plant2、–Would you please tell me________?-In Zigong.A．where do you live B．where you live C．you live where3、—Sam，I called you yesterday，but you were not at home.—Oh，I at my aunt's.A．am B．was C．have been D．will be4、The bus will stop in front of the school.A．correct B．right C．correctly D．rightly5、—Susan has bought a large house with a swimming pool.—It ________ be very expensive. I never dream about it.A．must B．might C．can’t D．shouldn’t6、—Thanks ______ joining the Talk Show!—You're welcome.A．by B．on C．of D．for7、—It’s said that shopping online is safe.—. You’d better be careful.A．I think so B．No problem C．That depends8、—Do you dream of being a doctor or a pilot?—. I wan t to work for people’s health.A．A pilot B．Yes, I do C．No, I’m not D．A doctor9、Please______the rubbish into different litter bins according to the signs.A．puts B．put C．putting D．to put10、—Put waste bag into the dustbin, please.—It’s not waste bag. It’s my shopping bag.A．the;a B．a; the C．a; a D．/; theⅡ. 完形填空11、I still remember that day. I was waiting to get some 1 for shopping in a bank. Among the crowd, I noticed a little boy carrying some sunglasses in one hand and a big bag in 2The boy was about 10 years old. He was walking around the people inside the 3 and asked them to buy his sunglasses. But 4 would buy any from him. He tried from one person to another. From the look on his face, I knew he would not 5 anyway.Now, I decided to have a 6 with him. I went up and asked, “Do you go to school?” He nodded his head. Then I continued, “Why do you7 sunglasses?” He said nothing. I gave him $20 and said that I was not in8 of the sunglasses but he could keep the money. To my 9 , his face changed a lot, which is still in my memory today. I didn’t know10 to say next. Then he replied, “Either you buy sunglasses or you11 back the money. I don’t need your pity.” I felt very12 for what I did, and I told him that I would buy two pairs.I took these sunglasses home and kept 13 myself, “Did such a young boy need to do it for his self-respect（自尊）?” He could 14 take the $20 and left. But he chose to sell his sunglasses and get the money not because of others’15 I will remember this lesson forever.1．A．bags B．books C．money D．information2．A．another B．others C．the other D．the others3．A．shop B．school C．hotel D．bank4．A．nobody B．somebody C．everybody D．anybody5．A．give out B．give away C．give back D．give up6．A．talk B．quarrel C．walk D．trade7．A．send B．sell C．buy D．give8．A．danger B．need C．time D．trouble9．A．joy B．surprise C．fear D．horror10．A．how B．when C．where D．what11．A．take B．give C．pay D．send12．A．worried B．happy C．excited D．sorry13．A．telling B．answering C．asking D．watching14．A．easily B．proudly C．sadly D．hardly15．A．joke B．pity C．advice D．decisioⅢ. 语法填空12、This is Tammela School, a primary school in Finland. The students are having a math class with their robot teacher.The “teacher” is1．small, blue machine about 25cm high, Reuters reported.Whenever students have problems, it helps them very2．(patient) and never gets bored.“The robot can make students3．(active) in class than usual. I see Eliasas one of the 4．(tool) to get different kinds of practice and activities into the classroom,” a teacher told Reuters.So far the school5．(introduce) four robot teachers, one of whom is a language teacher that can speak 23 languages and dance to music." 6．is necessary to encourage kids to come up7．new ways to make use of technology in school life," the head of the school 8．(add) in the interview.The robot teachers are used9．(help) improve learning. This doesn't mean that human teachers will lose their jobs. The robots can teach well,10．they are not able to keep class in order. The school still needs human teachers.Ⅳ. 阅读理解A13、Do you make New Year’s resolutions ? A resolution is a promise you make to yourself .In the new year, do you want to change one of you bad habits such as sleeping late? Or do you plan to save your pocket money for a trip ? Tell us your resolutions and get a fresh start this year!John: In the new year I will try to work harder. I will review lessons every day and spend less time playing computer games . I will also try to lose weight.Jim : My big plan this year is to release （发行）my own music CD in the summer. I’ve written over 10 songs , most of them are about the environment, school and friends . I’ve also recorded one song, but it’s not perfect. I will do it aga in later.Andy: I need to do more sport , like playing basketball ,so that I can lose some weight and grow stronger this year. I will also practice hard to improve my spoken English and Spanish （西班牙语）.Maria ：I will work harder this year to try to get into t he top 10 of my class. As a member of our school’s pistol shooting（手枪射击）team ,this year I will practice more. I will try to win a prize at the city competition.Lily: I will visit my grandparents more often this year and bring them their favorite food. I hope they will be healthy. I will also listen to and learn more English songs so that I can improve my spoken English.1．What do both John and Andy want to do in the new year?A．Play less games. B．Play basketball.C．Lose weight. D．Improve their spoken English.2．Who wrote and recorded a song last year?A．John B．Jim. C．Maria. D．Lily.3．Who wants to win in a shooting competition?A．Maria. B．Andy. C．Jim. D．Lily.4．Which of the following is NOT Lily's resolution?A．Visit her grandparents. B．Cook at her grandparents' house.C．Bring her grandparents food. D．Learn English songs.5．Who will spend time improving spoken English?A．John and Jim. B．Jim and Andy.C．Andy and Maria D．Andy and Lily.B14、Not only a popular singer was Yao Beina, but also she was an energetic and warm-hearted angel. She had her corneas (眼角膜) donated to two men who needed them, which helped them see the world clearly again.Yao was born in a music family on Sept. 26, 1981 in Wuhan. She started to learn the piano at the age of 4, and she sang her first song on the stage when she was 9 years old. Yao did quite well in singing, so she took part in the thirteenth Youth Singing Competition and won the first prize.She became well-known to the public after making a series of songs for the hit TV drama “The Legend of Zhenhuan” in 2012, and the mandarin version (中文版本) of “Let It Go” from Disney’s “Frozen”. In July 2013, she competed in The Voice of China II and finally got the second place in Na Ying’s team. She had won a lot of music awards before she wa s famous.Yao Beina was unfortunate to be diagnosed（诊断）with breast cancer (乳腺癌) and had a successful operation in 2011. Since then, she has fought against the disease for about four years while keeping singing, but sadly she failed. She originally thought of donating all of her organs (器官) to save others’ lives, but failed to do it because of her serious illness.She’s gone, even though she had never stopped struggling with cancer. Heaven just got another beautiful angel, with her beautiful voice and kindness.1．Yao Beina had her __________ donated to save others.A．two corneas B．all organs C．heart D．kidney2．How old was Yao Beina when she started to sing for people?A．Four. B．Nine. C．Thirteen. D．Thirty.3．Which is TRUE about Yao Beina according to the passage?A．She started to play the piano at the age of 5.B．She had great voice and won a lot of awards in music.C．She was a weak and selfish girl.D．She won over the breast cancer in the end.4．What’s the passage mainly about?A．Y ao Beina’s family.B．Y ao B eina’s disease.C．Y ao Beina’s teacher.D．Yao Beina’s art achievements.C15、I heard the following curious story from a railway acquaintance (相识的人). He was a gentleman of more than seventy years of age, and his good face and sincere manner put the stamp of truth on everything he said.“You know, in Siam the royal white elephant is very important. It is sacred to kings, and only kings can have a white elephant. And white elephants are more important than the king.”Very well…five years ago…After a misunderstanding between the countries, the King of Siam decides to send the Queen of England a present. This present must be a royal one. And what present can be as royal as a white elephant? It is my job to deliver the present to her Majesty the Queen. I travel with my servants, and the officers and helpers of the elephant, in a ship. Soon we arrive in New York harbour and I find a place for my royal elephant to stay in Jersey City. The elephant is not well and we must stay in New York until the doctors say he is better and can travel again._________________________________. I get a phone call in the middle of the night: the white elephant is stone! For some moments I feel helpless. Then I become calmer. There is only one thing I can do. I hurry to New York City and ask the first policeman that I meet to bring me to the headquarters (总部) of the police force. I am fortunate. The chief of the force, the well-known Inspector Blunt, is there. I tell him everything. He does not seem at all surprised. He asks me to sit do wn and says calmly, “Let me think for a moment, please.”Then he sits down at his office table and leans his head on his hand. Some people are working at the other end of the room. For the next six or seven minutes the only sound I can hear is the sound of their pens. The inspector sits quietly, thinking. Finally he raises his head, and I can see from his face that he has a plan.--- From The Stolen White Elephant1．Why does the King of Siam decide to send a present to the Queen of England?A．Because he wants to fight against England.B．Because he wants to show he is friendly.C．Because the Queen’s birthday is coming.D．Because there is a misunderstanding between them.2．What does the phrase put the stamp of truth on everything he said mean?A．His words are just jokes. B．His words are not all true.C．People can believe his words. D．He often posts the letters with stamps.3．Which of the following sentence can be put in the blank?A．The day passes without any other result.B．It all started with a very simple idea.C．Everything seems to be all right and they arrive there.D．All goes well for two weeks --- then my problems begin.4．According to the passage, we can infer that__________________.A．inspector Blunt seems to know who the thief isB．inspector Blunt is very famous in New York CityC．the white elephant is dead in the middle of the nightD．people can own white elephants besides kings in SiamD16、Robots are increasingly being developed to think and act like humans. But it is difficult for engineers to create humor (幽默) in machines. Computer scientists have hoped to help them understand humor. But they failed again and again. Why is it so difficult?Kiki, a computer language expert (专家), studies humor at a university. “Most robots are powered by art ificial intelligence (人工智能AI). But AI will never understand jokes like humans do.” He said, “The main problem is that AI system doesn’t have the sense of humor.”Other experts agree that context (语境) is very important to understand humor, both for humans and robots. In one project, Tristan Miller, a computer scientist, studied more than 10, 000 puns. Puns are a kind of joke that uses a word with two meanings. For example, you could say, “Balloons (气球) do not like pop music.” The word “pop” can be a way of saying popular music, or “pop” can be the sound a balloon makes when it explodes (爆炸). “A robot might not understand the joke because it doesn’t know the meaning of the puns.” Miller said.Although it’s difficult, some scientists say there are good reason s to keep trying to teach humor to robots. It can make machines understand humans better and serve humans better. And it can also help them to think more like humans.But other scientists don’t think it’s a good idea to teach humor to robots. They may find humor, but they may use it in a wrong way. Maybe bad AI will start killing people because it thinks it is funny. Besides, it may make some peoplefeel not safe. The comedians (喜剧演员) may lose their jobs when the robots can understand humor.1．Kiki is an expert who studies ______ at a university.A．humans B．humor C．AI system D．robots2．What does the underlined word "pun" mean in Paragraph 3?A．语言B．笑话C．双关语D．同义词3．From the passage, we know that ______.A．AI system has the sense of humorB．context is very important to understand humor only for humansC．if robots understand humor, they can’t serve humans betterD．some scientist think it’s good to teach robots humor but others don’t4．If we put the passage into three parts, which of the following is the best?1 ②=Para. 2 ③=Para. 3 ④=Para. 4 ⑤=Para.5)A．①;②③④;⑤B．①;②③;④⑤C．①②;③④;⑤D．①②;③;④E17、To many students, joining social media “circles” (朋友圈) is now more important than making new friends in real life. And it’s easy. If you have a mobile phone, you can downl oad many things such as Sina Weibo, QQ and WeChat.“I love to check my friends’ updates (更新). I also enjoy news and humor shared on social media,” said Wang Wei, 14, from a middle school in Shenzhen. While enjoying these, Wang distances himself from real l ife. “I love playing the plane-shooting game on WeChat, but have no interest in playing chess with my classmates,” said Wang.Deng Yunyun, 14, from Xuhui Middle School in Shanghai, said that social media has influenced their normal life. Last month, his school held a basketball match, and a student hurt his leg. Instead of giving him some help, students were busy with updating WeChat blogs about the accident. “I think they need to learn to balance their real and online lives, and what worries parents and te achers a lot is safety.” said Deng.“Many students are happy to tell their interests and personal information to their social media ‘friends’. And this could bring them danger,” said Miss Wang, a teacher from a Shenzhen middle school. “For example, the use of WeChat’s shake-shake allows users to connect to other users nearby. Also police warn about the risks of making friends in this way.”“Be careful. Do not use the locating function (定位功能) at any moment, do not give your name, and do not post the photos o f your community,” said Wang.1．According to the passage, the following separate the students from the real life EXCEPT ________.A．reading news shared on social mediaB．playing some kinds of games on WeChatC．being busy with updating WeChat blogsD．staying at home to watch TV programs2．Why did nobody offer help when a student hurt his leg?A．Because his classmates were busy sharing their updates.B．Because his classmates didn’t regard him as their friend.C．Because he didn’t belong to their social media “circles”.D．Because there were few students there at that moment.3．The underlined word “this” in the fourth paragraph refers to ________.A．the use of WeChat’s shake-shakeB．having no interest in playing chess with friendsC．paying too much attention to t heir social media “circles”D．sharing personal information with their social media ‘friends’4．What is the main idea of the passage?A．The use of WeChat’s shake-shake adds risks of making friends online.B．Warn students not to use WeChat’s locating functio n in case of danger.C．WeChat separates students from real life and also may bring them danger.D．Joining social media “circles” is more important than making friends in real life.F18、阅读理解。
安徽省肥东县第二中学2019_2020学年高二生物上学期第二次月考试题(普通班)
安徽省肥东县第二中学2019-2020学年高二生物上学期第二次月考试题（普通班）一、单选题（本大题共30小题，共60.0分）1.为了探究生长素的作用，将去尖端的玉米胚芽鞘切段随机分成两组，实验组胚芽鞘上端一侧放置含有适宜浓度IAA的琼脂块，对照组胚芽鞘上端同侧放置不含IAA的琼脂块，两组胚芽鞘在同样条件下，在黑暗中放置一段时间后，对照组胚芽鞘无弯曲生长，实验组胚芽鞘发生弯曲生长，如图所示。
根据实验结果判断，下列叙述正确的是（）A. 胚芽鞘b侧的IAA含量与b′侧的相等B. 胚芽鞘b侧与胚芽鞘c侧的IAA含量不同C. 胚芽鞘b′侧细胞能运输IAA而c′侧细胞不能D. 琼脂块d′从a′中获得IAA量小于a′的输出量2.如图表示生长素浓度对植物根、芽和茎生长的影响，与此图无关的结论是（）A. 生长素对三种器官的作用具有两重性，低浓度促进生长，高浓度抑制生长B. A、B、C点对应的生长素浓度分别是促进根、芽、茎生长的最适宜浓度C. D点对应的生长素浓度对茎和芽都具有促进作用D. 幼嫩的细胞对生长素反应灵敏，成熟的细胞对生长素反应不灵敏3.甲图为横放在地面上的植物的生长状况，乙图为植物生长素浓度对植物生长的影响曲线。
试分析甲图中C部位和D部位的生长素浓度分别相当于乙图中的哪一区间（）A. Ⅰ～Ⅱ区间和Ⅱ～Ⅲ区间B. Ⅱ～Ⅲ区间和Ⅰ～Ⅱ区间C. Ⅲ～Ⅳ区间和Ⅰ～Ⅲ区间D. Ⅰ～Ⅱ区间和Ⅲ～Ⅳ区间4.关于植物激素及其类似物在农业生产实践中的应用，符合实际的是（）A. 黄瓜结果后，喷洒一定量的脱落酸可防止果实的脱落B. 利用低浓度2，4-D作除草剂，可抑制农田中杂草的生长C. 用一定浓度的赤霉素溶液处理黄麻、芦苇等植物，可使植株增高D. 番茄开花后，喷洒一定浓度的乙烯利溶液，可促进子房发育成果实5.对如图所示图中有关的生物学意义的描述正确的是（）A. 甲图中若在c点处将神经切断，则刺激b点后，a点会兴奋，肌肉会收缩B. 乙图为人体体液的四种成分相互关系，则体内细胞与B之间不能直接物质交换，体内细胞与A之间才能直接进行物质交换C. 丙图中，对向光弯曲的植物而言，若B点为茎背光侧对应的生长素浓度，则c点不可能是茎向光侧对应的浓度D. 丁图中靶细胞裂解与效应T细胞内的溶酶体有关6.研究小组探究了萘乙酸（NAA）对某果树扦插枝条生根的影响，结果如图。
安徽省合肥市肥东县第二中学2019-2020学年高二上学期期末数学(文)试题(解析版)
2019-2020学年度第一学期期末教学质量检测高二数学试卷（文科）注意事项：1.本试卷考试时长120分钟，满分150分；2.请在答题卷规定位置注明班级、考号和姓名；3.请将所做答案填写在答题卷上，写在试卷上无效！交卷时，只需上交答题卷.第I 卷（选择题 共60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.命题“0x ∀>，使得210x x ++≥”的否定是（ ）A. 00x ∃≤，使得20010x x ++≤B. 00x ∃>，使得210x x ++<C. 0x ∀>，使得210x x ++>D. 0x ∀≤，使得210x x ++> 【答案】B【解析】【分析】全称命题的否定，需先将“∀”改为“∃”，再把结论否定，据此分析选项可得答案．【详解】解：命题“0x ∀>，使得210x x ++≥”的否定是：00x ∃>，使得210x x ++<.故选：B ．【点睛】本题主要考查全称命题的否定的写法，属于基础题．2.直线20x y a --=与直线10x y +-=的交点位于第一象限内，则实数a 的取值范围是（ ） A. 1,2⎛⎫+∞ ⎪⎝⎭ B. 1,2⎛⎫-∞- ⎪⎝⎭ C. 11,22⎛⎫- ⎪⎝⎭ D. 11,22⎡⎤-⎢⎥⎣⎦ 【答案】C【解析】【分析】联立方程组解出交点坐标，结合象限内点坐标的特点，解不等式即可解决．【详解】解：由1020x y x y a +-=⎧⎨--=⎩，解得122122a x a y +⎧=⎪⎪⎨-⎪=⎪⎩， Q 直线20x y a --=与直线10x y +-=的交点位于第一象限内，∴120120a a +>⎧⎨->⎩，解得：1122a -<<， 则实数a 的取值范围是11,22⎛⎫-⎪⎝⎭. 故选：C ．【点睛】本题主要考查两直线交点坐标的求解，以及象限内点坐标的特点．3.已知直线l 的斜率与直线326x y -=的斜率相等，且直线l 在x 轴上的截距比在y 轴上的截距大1，则直线l 的方程为（ ）A. 151060x y --=B. 151060x y -+=C. 6430x y --=D. 6430x y -+=【答案】A【解析】【分析】设直线l 的方程为320x y c -+=，再根据直线l 在x 轴上的截距比在y 轴上的截距大1，可得132c c --=，解得c 的值，可得所求直线的方程．【详解】解：Q 直线l 的斜率与直线326x y -=的斜率相等，可设直线l 的方程为320x y c -+=．再根据且直线l 在x 轴上的截距比在y 轴上的截距大1， 可得132c c --=，解得65c =-， 故直线l 的方程为63205x y --=， 即：151060x y --=.故选：A. 【点睛】本题主要考查两条直线平行的条件和直线方程，以及直线在坐标轴上的截距．4.棱长为2的正方体的外接球的表面积为（ ）A. 12πB. 4πC. 16πD. 20π【答案】A【解析】【分析】 根据正方体与其外接球之间的关系，求出外接球的半径，即可得出球的表面积．【详解】解：易知，正方体的体对角线是其外接球的直径，则2R ==R 所以24412S R πππ===．故选：A ．【点睛】本题考查了正方体的外接球问题，一般会考虑正方体的棱长、体对角线等与其外接球的半径间的关系来解决问题．5.已知圆22:2410C x y x y +-++=，点P 在圆C 上，点(2,2)Q -在圆C 外，则PQ 的最大值为( ) A. 5B. 6C. 7D. 8【答案】C【解析】【分析】 圆C 的标准方程为：()()22124x y -++=，PQ 的最大值就是CQ 的长度与半径之和.【详解】圆C 的标准方程为：()()22124x y -++=，又2PQ CP CQ CQ ≤+=+，5CQ ==，故PQ 的最大值为7，当且仅当,,P C Q 三点共线时等号成立.故选C.【点睛】圆中的最值问题，往往转化为圆心到几何对象的距离的最值问题.有时也可利用三角换元把最值问题转化为三角函数式的最值问题来处理.6.设,m n 是两条不同的直线，,αβ是两个不同的平面，且,m n αβ⊂⊂，下列命题中正确的是（ ）A. 若αβ⊥，则m n ⊥B. 若//αβ，则//m nC. 若m n ⊥，则αβ⊥D. 若n α⊥，则αβ⊥【答案】D【解析】选项A 中，直线m n ，可能相交、平行或异面，故不正确．选项B 中，直线m n ，可能平行或异面，故不正确．选项C 中，平面αβ，可能平行或相交，故不正确．选项D 中，由面面垂直的判定定理可得正确．选D ．7.已知一几何体的三视图如图所示，俯视图由一个直角三角形与一个半圆组成，则该几何体的体积为A. 612π+B. 624π+C. 1212π+D. 2412π+【答案】A【解析】 根据给定的三视图可知，该几何体是一个底面为直角边分别为2和4的直角三角形，侧棱为3的直三棱柱，以及一个底面半径为2，母线长为3的半个圆柱的组合体，所以该几何体的体积为2112432361222V ππ=⨯⨯⨯+⨯⨯=+，故选A ． 【方法点睛】本题利用空间几何体的三视图重点考查学生的空间想象能力和抽象思维能力，属于难题.三视图问题是考查学生空间想象能力最常见题型，也是高考热点.观察三视图并将其“翻译”成直观图是解题的关键，不但要注意三视图的三要素“高平齐，长对正，宽相等”，还要特别注意实线与虚线以及相同图形的不同位置对几何体直观图的影响.8.已知命题:0p x ≥；命题:q x ∀∈R ，210x x --=．则下列命题为真命题的是（ ）．A. p q ⌝∨B. p q ⌝∧C. p q ∨⌝D. p q ⌝∧⌝【答案】C【解析】分析：先判断命题p 和q 的真假，再判断选项的真假.详解：由题得命题p 是真命题，对于命题q,因为=1+40∆>，所以方程有两个不相等的实数根，所以命题q 是假命题，A 选项．p ⌝为假命题，p q ⌝∨为假命题．B 选项．p q ⌝∧为假命题．C 选项．q ⌝为真命题，p q ∨⌝为真命题．D 选项．p q ⌝∧⌝为假命题．故真命题是C ，故答案为C.点睛：（1）本题主要考查含逻辑联结词的命题的真假，意在考查学生对这些基础知识的掌握水平.(2)复合命题真假的判断口诀：真“非”假，假“非”真，一真“或”为真，两真“且”才真.9.已知直线20kx y ++=和以()2,1M -，()3,2N 为端点的线段相交，则实数k 的取值范围为（ ） A. 32k ≤ B. 32k ≥ C. 4332k -≤≤ D. 43k ≤-或32k ≥ 【答案】D【解析】【分析】由直线系方程求出直线所过定点，再由两点求斜率，求得定点与线段两端点连线的斜率，数形结合求得实数k 的取值范围．【详解】解：由直线20kx y ++=可知直线过定点(0,2)P -，且斜率为k -，又(2,1)M -，(3,2)N ，如图，2130(2)2PM k --==---，224033PN k --==-． ∴直线20kx y ++=和以(2,1)M -，(3,2)N 为端点的线段相交，则k -的取值范围为34(,][,)23-∞-+∞U ． k 的取值范围是：(-∞，43][32-U ，)+∞．故选：D.【点睛】本题考查了直线系方程的应用，以及两点求直线的斜率，还考查了数形结合的解题思想方法，是中档题．10. BC 是Rt△ABC 的斜边,PA⊥平面ABC,PD⊥BC 于D 点,则图中共有直角三角形的个数是（ ）A. 8个B. 7个C. 6个D. 5个【答案】A【解析】 试题分析：因为PA ⊥平面ABC ，BC ⊂平面ABC ，所以PA BC ⊥，又PD BC ⊥于D ，连接,AD PD PA A ⋂=,所以BC ⊥平面,PAD AD ⊂平面PAD ，所以BC AD ⊥，又BC 是Rt ABC ∆的斜边，所以BAC ∠为直角，所以图中的直角三角形共有,,,,,ABC PAC PAB PAD PDC PDB ∆∆∆∆∆∆，ADC ∆，ADB ∆，故选A ．考点：直线与平面垂直的性质．11.若2215:O x y e +=与222:())2(0O x m y m -∈R e +=相交于A ，B 两点，且两圆在点A 处的切线互相垂直，则线段AB 的长是( )A. 1B. 2C. 3D. 4【答案】D【解析】【分析】由题意画出已知两个圆的图象，利用圆的性质可以得到两切线互相垂直时，满足过对方的圆心，再利用直角三角形进行求解．【详解】由题意作出图形分析得：由圆的几何性质知：当两圆在点A 处的切线互相垂直时，切线分别过对方圆心21O O 、．则在21Rt O AO ∆中，12O A O A =，斜边上的高为半弦，且21O O AB ⊥,用等积法可得：•542ABAB ==．故选D ．【点睛】本题考查了圆与圆的位置关系，考查了圆的切线性质及直角三角形中求解线段长度的等面积的方法，属于基础题．12.“2a =”是“直线210ax y +-=与(1)20x a y +-+=互相平行”的（ ）A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分也不必要条件【答案】A【解析】【分析】利用两条直线互相平行的条件进行判定【详解】当2a =时，直线方程为2210x y +-=与20x y ++=，可得两直线平行；若直线210ax y +-=与()120x a y +-+=互相平行，则()12a a -=，解得12a =， 21a =-，则“2a =”是“直线210ax y +-=与()120x a y +-+=互相平行”的充分不必要条件，故选A【点睛】本题主要考查了两直线平行的条件和性质，充分条件，必要条件的定义和判断方法，属于基础题．第Ⅱ卷（非选择题 共90分）二、填空题（本大题共4个小题，每小题5分，共20分.把答案填写在答题卡相应的题号后的横线上）13.点P 在圆22:1O x y +=上运动,点Q 在圆C ：()2231x y -+=上运动,则PQ 的最小值为________． 【答案】1【解析】【分析】设连心线OC 与圆O 交于点P'，与圆C 交于点'Q ，当点P 在P'处,点Q 在'Q 处时PQ 最小，从而可得结果.【详解】如图，设连心线OC 与圆O 交于点P'，与圆C 交于点'Q ，当点P 在P'处,点Q 在'Q 处时PQ 最小，圆22:1O x y +=的圆心为原点，半径为1；圆C ：()2231x y -+=圆心为()3,0，半径为1 最小值为|12''3111P Q OC r r =--=--=，故答案为1.【点睛】本题主要考查圆的方程与性质以及解析几何求最值，属于中档题.解决解析几何中的最值问题一般有两种方法：一是几何意义，特别是用圆锥曲线的定义和平面几何的有关结论来解决，非常巧妙；二是将解析几何中最值问题转化为函数问题，然后根据函数的特征选用参数法、配方法、判别式法、三角函数有界法、函数单调性法以及均值不等式法.14.不论m 为何实数，直线()1(21)5m x m y m -+-=-恒过的定点坐标是______________.【答案】()94-，【解析】直线方程即：()()2150m x y x y +--+-= ，求解方程组：210{50x y x y +-=+-= 可得：9{4x y ==- ， 即直线恒过定点()9,4- .15.已知圆()()22:439C x y -+-=，若(),P x y 是圆C 上一动点，则y x的最大值是________. 【答案】247【解析】【分析】 由题意设y k x =，即0kx y -=，圆心到直线的距离3d =，可得y x的最大值． 【详解】解：由题意，设y k x=，即0kx y -=， 因为圆()()22:439C x y -+-=，圆心为()4,3，半径为3， 则圆心()4,3到直线0kx y -=的距离3d =，2407k ∴剟， 即y x 的最大值是247． 故答案为：247． 【点睛】本题考查直线与圆的位置关系，还运用点到直线的距离公式．16.已知椭圆22:24C x y +=，设O 为原点.若点A 在直线2y =上，点B 在椭圆C 上，且OA OB ⊥，则线段AB 长度的最小值________.【答案】【解析】【分析】设出A ，B 两点的坐标，利用向量垂直的条件得出A ，B 坐标间的关系，用距离公式表示出AB ，消元后建立AB 的函数关系，利用基本不等式求出最小值．【详解】解：由题意，设点A ，B 的坐标分别为(,2)t ，0(x ，0)y ，其中00x ≠． 因为OA OB ⊥，所以·0OAOB =u u u r u u u r ，即0020tx y +=，解得002y t x -=． 又220024x y +=，所以222220000002||()(2)()(2)y AB x t y x y x =-+-=++- 222220000022004844(04)2y x x y x x x =+++=++<…． 因为22002084(04)2x x x +<厔，当204x =时等号成立，所以2||8AB …．故线段AB长度的最小值为故答案为：【点睛】本题考查了利用基本不等式求解最值问题，同时运用向量的数量积公式，以及两点间的距离公式，对学生的运算和数据处理能力要求较高.三、解答题（本大题共6个小题，共70分.解答应写出文字说明、证明过程或演算步骤）17.已知圆22:8120C x y y +++=，直线:20l ax y a ++=.（1）当a 为何值时，直线l 与圆C 相切；（2）当直线l 与圆C 相交于A ，B两点，且AB =时，求直线l 的方程.【答案】（1）34（2）7140x y ++=或20x y ++=. 【解析】【分析】 （1）圆C 的圆心(0,4)C -半径2r =，由直线:20l ax y a ++=与圆相切，利用点到直线距离公式列出方程，能求出a 的值．（2）直线l 与圆C 相交于A 、B两点，且||AB =d ==离d =a ，由此能求出直线方程．【详解】解：将圆C 的方程228120x y y +++=配方得标准方程为()2244x y ++=，则此圆的圆心为()0,4-，半径为2.（1）若直线l 与圆C 相切，则圆心()0,4-到直线:20l ax y a ++=的距离等于2，2=，34a ∴=； （2）直线l 与圆C 相交于A ，B两点，且AB =，Q圆心到直线的距离d =而d ==1a \=或7.故所求直线方程为7140x y ++=或20x y ++=.【点睛】本题主要考查直线与圆的位置关系，圆的弦长以及直线方程和点到直线的距离公式的应用，同时考查学生运算求解能力．18.如图，在四棱锥P ABCD -中，底面ABCD 是正方形，E 、F 分别为PC 、BD 的中点，侧面PAD ⊥底面ABCD .（1）求证：EF P 平面PAD ；（2）若EF PC ⊥，求证：平面PAB ⊥平面PCD .【答案】（1）见解析；（2）见解析【解析】【详解】分析：．1）连结，则是的中点，220(1)0y x a x y ay a =⎧⎨-++-+=⎩为的中点，得220(1)0y x a x y ay a =⎧⎨-++-+=⎩．利用线面平行的判定定理，即可证得//EF 平面PAD ； (2)由（1）可得，PA PC ⊥，又由220(1)0y x a x y ay a =⎧⎨-++-+=⎩．平面ABCD 为正方形，得CD ⊥平面PAD ．所以CD ⊥PA．从而得到PA ⊥平面PDC ，利用面面垂直的判定定理，即可证得平面PAB ⊥平面PCD ．详解：（1）连结，则是的中点，E 为的中点，故在CPA V 中，EF //PA ，因为PA ⊂平面PAD ，EF ⊄平面PAD ，所以EF //平面PAD(2)由（1）可得，EF//PA ，又EF⊥PC ，所以PA⊥PC因平面PAD ⊥平面ABCD ，平面ABCD 为正方形所以，CD ⊥平面PAD ，所以CD⊥PA ，又CD PC C ⋂=，所以PA⊥平面PDC又PA ⊂平面PAB ，所以平面PAB ⊥平面PCD点睛：本题考查线面位置关系的判定与证明，熟练掌握空间中线面位置关系的定义、判定、几何特征是解答的关键，其中平行、垂直关系证明中应用转化与化归思想的常见类型：(1)证明线面、面面平行，需转化为证明线线平行；(2)证明线面垂直，需转化为证明线线垂直；(3)证明线线垂直，需转化为证明线面垂直． 19.已知圆C 的圆心为(2,1)．若圆C 与圆x 2．y 2．3x ．0的公共弦所在直线过点(5．．2)，求圆C 的方程．【答案】(x ．2)2．(y ．1)2．4.【解析】【分析】先设圆C 半径，再对应相减两圆方程得公共弦所在直线方程，代入点求得半径.【详解】设圆C 的半径长为r ，则圆C 的方程为(x ．2)2．(y ．1)2．r 2．即x 2．y 2．4x ．2y ．5．r 2，两圆的方程相减，得公共弦所在直线的方程为x ．2y ．5．r 2．0.因为该直线过点(5．．2)，所以r 2．4，则圆C 方程为(x ．2)2．(y ．1)2．4.【点睛】本题考查两圆公共弦求法，考查基本求解能力.20.已知0c >且1c ≠，设命题:p 函数xy c =在R 上单调递减，命题:q 对任意实数x ，不等式20x c +>恒成立.（1）求非q 为真时，实数c 取值范围；（2）如果命题p q ∨为真命题，且p q ∧为假命题，求实数c取值范围.【答案】（1）012c <≤（2）()10,1,2c ⎛⎤∈+∞ ⎥⎝⎦U 【解析】【分析】 （1）先写出q ⌝，再根据q ⌝为真时，判别式大于等于0，求解实数c 的取值范围；（2）由命题“p q ∨ ”为真命题，“p q ∧ ”为假命题，得出p 与q 中一真一假．然后利用交、并、补集的混合运算求解．【详解】（1）由题可知，q ⌝：存在0x R ∈，不等式20x c +…成立；当q ⌝为真时，(240c ∆=-≥，即12c ≤， 又0c >且1c ≠，102c ∴<≤ （2）因为命题:p 函数x y c =在R 上单调递减，若命题p 为真，则01c <<，已知命题:q 对任意实数x ，不等式20x c +>恒成立，若命题q 为真，则(240c ∆=-<得12c >， 又因为0c >且1c ≠，所以112c <<或1c >， 因为命题“p q ∨”为真命题，“p q ∧”为假命题，所以p 和q 中一真一假，当p 真q 假时，012c <≤，当p 假q 真时，1c >， 综上所述：()10,1,2c ⎛⎤∈+∞ ⎥⎝⎦U . 【点睛】本题考查复合命题的真假判断，还涉及指数函数的单调性，以及一元二次不等式恒成立问题的求解方法，是中档题．21.如图，在四棱锥P ABCD -中，//AB CD ，AB AD ⊥，2CD AB =，平面PAD ⊥底面ABCD ，PA AD ⊥，E 和F 分别是CD 和PC 的中点．（1）求证：//BE 平面PAD ；（2）求证：平面BEF ⊥平面PCD ．【答案】（1）见解析（2）见解析【解析】【详解】试题分析：（1）根据已知条件判断ABED 为平行四边形，故有BE AD P ，再利用直线和平面平行的判定定理证得//BE 平面PAD ．（2）先证明ABED 为矩形，可得BE CD ⊥ ．可证证CD ⊥平面PAD ，可得CD PD ⊥ ，再由三角形中位线的性质可得EF PD P ，从而证得CD EF ⊥ ．利用直线和平面垂直的判定定理证得D ⊥平面BEF ，再由平面和平面垂直的判定定理证得平面BEF ⊥平面PCD ．试题解析：（1）∵//AB CD ，2CD AB =，E 是CD 的中点，∴//AB DE ，且AB DE =，∴ABDE 为平行四边形，∴//AD BE ，∴//BE 平面PAD ．（2）∵AB AD ⊥且ABDE 为平行四边形，∴BE CD ⊥，AD CD ⊥，由已知可得PA ⊥底面ABCD ，∴PA CD ⊥，∴CD ⊥平面PAD ，∴CD PD ⊥，∵E 和F 分别是CD 和PC 的中点，∴//PD EF ，∴CD EF ⊥，∴CD ⊥平面BEF ，∴平面BEF ⊥平面PCD ．22.已知椭圆2222:1(0)x y G a b a b +=>>,斜率为1的直线l 与椭圆G 交于,A B 两点，以AB 为底边作等腰三角形，顶点为(3,2)P -.（1）求椭圆G 的方程；（2）求PAB △的面积.【答案】（1）221.124x y +=（2）92 【解析】【分析】（1）根据椭圆的简单几何性质知a =2224b a c =-=，写出椭圆的方程；（2）先斜截式设出直线y x m =+，联立方程组，根据直线与圆锥曲线的位置关系，可得出AB 中点为00(,)E x y 的坐标，再根据△PAB 为等腰三角形知PE AB ⊥，从而得PE 的斜率为241334mk m -==--+，求出2m =，写出AB ：20x y -+=，并计算||AB =，再根据点到直线距离公式求高，即可计算出面积．【详解】（1）由已知得c =c a =a =2224b ac =-=， 所以椭圆G 的方程为221124x y +=． （2）设直线l 方程为y x m =+， 由22,{1124y x m x y ，=++=得22463120x mx m ++-=，① 设A 、B 的坐标分别为11(,)x y ，22(,)x y （12x x <），AB 中点为00(,)E x y ， 则120324x x m x +==-，004m y x m =+=， 因为AB 是等腰△PAB 的底边，所以PE AB ⊥．所以PE 的斜率为241334mk m -==--+，解得2m =，此时方程①为24120x x +=． 解得13x =-，20x =，所以11y =-，22y =，所以||AB =， 的此时，点(3,2)P -到直线AB ：20x y -+=的距离2d ==， 所以△PAB 的面积1922S AB d =⋅=． 考点：1、椭圆的简单几何性质；2、直线和椭圆的位置关系；3、椭圆的标准方程；4、点到直线的距离.【思路点晴】本题主要考查的是椭圆的方程，椭圆的简单几何性质，直线与椭圆的位置关系，点到直线的距离，属于难题．解决本类问题时，注意使用椭圆的几何性质，求得椭圆的标准方程；求三角形的面积需要求出底和高，在求解过程中要充分利用三角形是等腰三角形，进而知道定点与弦中点的连线垂直，这是解决问题的关键．。
安徽省示范中学2019-2020学年高二上学期入学考试 生物 Word版含答案
安徽省示范高中高二开学考试生物考生注意：1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分，共100分。
考试时间90分钟。
2.请将各题答案填写在答题卡上。
3.本试卷主要考试内容：人教版必修1、必修2第1～4章。
第Ⅰ卷(选择题共50分)一、选择题(本大题共25小题，每小题2分，共50分。
在每小题给出的四个选项中，只有一项符合题目要求。
)1.下列有关支原体(一类无细胞壁的原核生物)的说法，正确的是A.其遗传信息储存在脱氧核糖核苷酸中B不能在无生命的人工培养基上生长繁殖C.无内质网但能合成具有特定结构的膜蛋白D.存在维持其生命活动的生物膜系统2.下列有关蛋白质的说法，错误的是A.胰岛素的化学本质是蛋白质，因此不能通过口服胰岛素来治疗糖尿病B.血红蛋白溶液中加入食盐后会析出红色絮状物，稀释后絮状物又会消失C.高温能使抗体变性，从而使其无法与双缩脲试剂发生颜色反应D.分泌蛋白排出细胞的过程中，囊泡膜可与细胞膜融合3.下列关于细胞结构与功能的叙述，错误的是A.植物叶肉细胞的线粒体内膜和类囊体膜上都能合成A TPB.动物细胞中存在由蛋白质纤维构成的细胞骨架C.细胞核中携带遗传信息的DNA通过核孔进入细胞质来控制蛋白质合成D.唾液腺细胞分泌淀粉酶的过程体现了细胞膜的结构特点4结合右图分析，下列说法正确的是A若细胞中含有结构①，则该细胞只能进行有氧呼吸B.不能仅依据细胞中是否含有结构②来判断其是否是植物细胞C.结构③是细胞遗传和代谢的中心，核糖体的形成与③内某些结构有关D.真核生物的细胞中都含有结构①和结构③5.下列有关生物膜的叙述，错误的是A.细胞间的信息交流必须依赖于生物膜上的特异性受体B.真核细胞的生物膜系统为酶提供了大量附着位点C.某些生物膜上的糖蛋白具有保护和润滑作用D.某些生物膜上可发生能量转换和进行物质运输6.下列关于物质出入细胞的方式的叙述，错误的是A.某些小分子物质可通过主动运输进入细胞B.细胞内外浓度相等时不可发生物质的运输C.被动运输过程中有些载体蛋白需要发生形变D.某些物质通过小泡与生物膜的融合排出细胞7.下列关于细胞的质壁分离及复原的说法，错误的是A.不是所有植物细胞都可作为观察细胞的质壁分离及复原实验的材料B.将植物细胞置于高浓度的蔗糖溶液中，质壁分离及复原现象更明显C.植物细胞发生质壁分离的过程中，细胞的吸水能力增强D.若外界溶液是一定浓度的KNO3溶液，则细胞可能发生质壁分离后自动复原8.某研究小组同学为探究温度和pH对淀粉酶活性的影响进行了相关实验，得到如下图所示的实验结果。
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肥东二中2019—2020学年第一学期开学质量检测高二年级英语试题（满分：150分时间：120分钟）I听力（每题1.5分，共30分）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 did the man grow up?A.In America.B. In Australia.C. In New Zealand.2.What does the man's little brother like doing in the evening?A.Reading books.B. Watching TV.C. Playing with other boys.3.What does the woman mean?A.She doesn't like iced drinks （冷饮）.B. She can't provide any Coke.C. She'll get the man some coffee.4.What is the man probably?A.A singer.B. An actor.C. A writer5.Which room did Jenny stay in?A.Room 204.B. Room 205.C. Room 210.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三个选项中选岀垠佳选项，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，各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
请听第6段材料，回答第6、7题。
6.What does the man say about Henry?A.He is humorous （幽默的）.B. He is unpopular.C. He is talkative （健谈的）7.What will the two speakers do next?A.Tell each other a joke.B. Go to where Henry is.C. Make friends with Henry. 请听第7段材料，回答第8、9题。
8. When did the woman get here?A.At 5：45 pm.B. At 6：00 pm.C. At6：30 pm.9.How many times did the woman have to change buses?A. Once.B. Twice.C. Three times.请听第8段材料，回答第10至12题。
10.What did the man do before applying （(申请）for the job?A. He taught students art.B. He talked with customers.C・He visited students' parents.11.What does the woman think the man will find useful in this new job?A.His computer skills （技能）B. His job experience.C・His grades at school,12.What does the woman ask the man to do in the end?A.Wait for further information.B. Give his e-mail address to her.C・Come to work the next day.请听第9段材料，回答第13至16题。
13.What is the man doing now?A.Doing a survey.B. Reading a newspaper.C. Having a class.14.What does the man probably do?A. A teacher.B. A reporter.C. A student・15.How often does the woman watch the news on TV?A. Twice a week.B. Once a week.C. Once a month・16.How does the woman usually get her news?A.From mobile phone and the Internet.B.From newspapers and the Internet.C.From the Internet and radio.请听第10段材料，回答第17至20题。
17.What color is Carla's leather coat?A. Pink.B. White.C. Dark brown.18. How old is Carla?A. Seven years old.B. Three years old.C. Two years old.19.What do we know about the speaker's daughter?A.She walks Carla every night.B.She feeds Carla every day.C.She shares her bed with Carla.20.What is the purpose （目的）of the talk?A.To look for a lost dog.B.To introduce a young dog.C.To find someone to take care of a dog.II.阅读理解（每题2分，共40分）AMilk is really important because it can be given to all age groups especially children. The following are top five largest milk producing countries in the world in 2018.•IndiaNumber 1 on the list is India. Milk produced by India takes up 9.5 percent of the global milk production. In terms of cow's milk alone, India stands second to the USA, but has topped the list as most of the milk in India is from buffaloes （水牛）.India exports （进口）milk to countries like Pakistan, Afghanistan, UAE, and Nepal.•The USANumber 2 on the list is the USA. Although the USA stands second in terms of global milk production, it is the first when it comes to cow's milk. Very little is from the buffalo's milk. There are altogether 23 states which produce milk. They evenexport a large amount of dairy products as well as milk to Mexico, Saudi Arabia and China.•ChinaChina stands third in the highest milk producing countries in the world in 201 China exports （出口）milk only to a few countries. This is because they cannot satisfy the vastpopulation; thus even though it stands third in the milk production, it is the highest importer of milk products.•PakistanNumber 4 in the list is Pakistan. The main source of milk is from buffaloes in this country. Last year, the country produced 42 million tons of milk A little amount of milk also comes from goats.•BrazilMilk production adds an important amount of revenue （收入）to the Brazilian government. Even though Brazil is known to the largest importer of dairy products, it still holds the 5th position in milk production・This is because of the increased support of the government as well as low production and processing costs.12.What do we know about India in producing milk?A.It is the largest milk exporter.B.Most of its milk is from cows.C.It produces about one tenth of global milk.D.It mainly imports milk from Asian countries.13.Where does the milk on a Chinese family's table most probably come from?A. The USA or ChinaB. India or the USAC. China or PakistanD. Pakistan or Brazil14.Which country may offer the greatest support in producing milk?A. The USAB. ChinaC. PakistanD. BrazilBWhile doing volunteer work in the supermarket last Saturday, I noticed a young family shopping for secondhand clothes. The dad was looking after their two-year-old son, while Mom was shopping ・He was so relaxed and patient with his son, and the kid did not pay any attention to what his dad said at all! The kid was totally lost in experiencing sound （hitting a wooden floor with his toy cars）and copying a few kids also playing nearby.The boy's shirt was rather wet from drool （口水）and, as a sensory input （感官键入）specialist, I also noticed sensory seeking actions・I was thinking over how to handlethis, as I knew this kid had sensory issues （问题）and could easily be developing far better if the got proper help・At a point I remembered food issues fitting what I saw, so I talked to the dad “Excuse me, how is your son with food? I think he might be making his mouth full of food before getting it down." The dad turned to me and was completely surprised・“How do you know that?” I explained my background and at that point Mom also entered the conversation.I explained a bit about sensory issues, and I was allowed to show some techniques. The amazing thing was when I applied pressure to his shoulder area, he made immediate eye contact （接触），followed by a huge smile. He loved the fact that he got input without needing to seek.Mom and Dad were shocked at how immediately this had effect on him, so I gave them a website of Si-therapists （感官键入治疗专家）.Mom and Dad both were very receptive and thanked me for being so helpful.15.What did the author find about the kid?A. He suffered from sensory problems.B・He was sensitive to sound.C.He enjoyed playing alone・D.He disliked his father.16.What was the kid's attitude towards the author's treatment?A.Doubtful.B.Uncaring.C.Positive.D.Negative.17.What will the kid's parents probably do next?A. Turn to the author for more help.B・Treat the kid as the author suggested.C.Try to make the kid smile more often.D.Encourage the kid to play with others.18.What kind of person is the author?A.Smart and healthy.B.Brave and sensitive.C・Patient and hard-working D.Careful and warm-hearted・CPhillip Island is a small island and nature reserve off the coast of South Australia, about 140 km from Melbourne. On the island you can see koalas, kangaroos, and the main attractions, the Penguin （企鹅）Parade on Summerland Beach.As dusk was coming nearer, we made our way down to the beach, as did everyone else. As it got darker, people talked less, keeping an eye out on the beach to see the arrival of that first penguin.Suddenly there was movement at the edge of the surf and all heads turned as one. There, standing by the edge of the water was the smallest penguin wc had ever seen. He looked left, then right, as if the was considering crossing a busy road and then he ran quickly across to the sand dunes （沙丘）and the penguin burrows （地洞）.He must have been the scout （侦察兵），because after him, there came groups of penguins, some consisted of two or three penguins, some had about ten or fifteen , but they all made that same mad dash across the sand into the burrows・Finally no more penguins emerged （出现）from the sea.You could see the penguins here every evening and morning, but they weren't in cages or in small pools, the sea was their playground and it is a sight we would definitely recommend to anyone.You weren't allowed to take flash photographs as it feared them. After the penguins had gone to their burrows, you could walk along boardwalks and see themthere. That's got to be worth a look.19.What does the text mainly talk about?A.The main attraction on Phillip Island.B.The Penguin Parade on Summerland Beach.C.The beautiful scenery on Phillip Island.D.How to protect the penguins on Phillip Island.20.Which of the following shows the right order of the Penguin Parade?a.The smallest penguin stands in front of the parade and looks around.b.Groups of penguins dash into the burrows one after another.c.The smallest penguin runs quickly to the burrowsd.There are no more penguins on the sea.e.The penguins appear as a whole・A. e, a, c, b, dB. a, b, c, e, dC. a, c, e, b, dD. e, a, b, c, d21.The text is intended for.A. teachersB. parentsC. kidsD. travelers22.What can be inferred from the text?A.The best time to see penguins is noon.B.You could take photos at any time.C.You could see penguins at dawn.D・You could play with the penguins.DWhat would it be like to take a walk on the surface of Mars? If you could design the tallest building in the world, what would it look like? Do you dream of being the next J. K. Rowling? This summer, you can experience all of these things, and more. All you need is an Internet connection and your imagination.A recent study found that many kids like to use the Internet to chat with friends, play games or check e-mail. But the next time you get on the web, try exploring the world instead. "With the Internet, you can go back 11,000 years in time, or go 11,000 kilometers across the planet.” Said Russell, an expert of Google.There is a weakh of information to be found online. For example, if your family is going on vacation somewhere, do a quick search online on the area before you start. What's the background of the place; wha's the history?" says Russell. "I like to tell my kids, "Whenever you have a question, whenever you have a doubt, search it out?Ready to begin a virtual journey of your own? Here are a few starting points to get you thinking and to help you on your way. You can invite your parents along the ride, too. Always ask for permission before downloading programs and software onto your computer. And, check with a parent or adult before visiting any new website.Travel around the world in 3-D with Google Earth. Begin in outer space and go quickly into the streets of any city, from Hong Kong to San Francisco. Or, visit ancient monuments, watch the changing rainforests over time, and dive underwater to explore tropical （热带的）reef.With the Moon in Google Earth tool, you can walk in Neil Armstrong's famous footsteps. Take a guided tour of the moon's surface with Armstrong's fellow shuttle （航天飞机）mate astronaut Buzz Aldrin.23.According to the text, if you want to go to Stonehenge in England, what can you do?A. Take the time shuttle.B.Search earth in Google.C.Find a tourism company in Google.D.Go to the cinema to watch 3-D film.24.Russell thought studentsA.spent too much time on the internet.B.should not chat and play games online.C.could solve their problems through the line.D.should learn to be imaginative by the Internet25.What can we know from the text?A.we can find lots of information we need online.B.Armstrong travelled to the moon at the first time.C.Kids could download programs onto the computer freely.D.Kids can visit the new website freely without parents' guide,26.The author wrote the text to encourage kids to・A. spend more time onlineB. do some research on scienceC.learn to use the computerD. explore the world online七选五ESome people think only school children do not agree with their parents, however, it is not true.Communication is a problem for parents and children of all ages. 36 Here is some advice for you to bridge the generation gap.37 Don't get to your parents when you are angry. On one hand, your parentsprobably won't consider your idea if you are shouting at them. On the other hand, you can't express yourself well if you are angry. Go some place to cool off. Make sure you understand why you are unhappy. Then think about what you want to say to your parents. If you don't think you can speak to them at the moment, try writing a letter.Try to reach a compromise （妥协）.Perhaps you and your parents disagree on something. 38For example, MichaePs mother didn't agree with him about buyinga motorcycle. They argue over it. But they finally came to a compromise・Michael bought the motorcycle, but only drove it on certain days.Of course, your parents might refuse to compromise on something. 39Showing respect will keep your relationship strong.40The values of your parents are probably different from those of your own.Tell your parents what you care about and why. Understanding your values might help your purposes in lift.A good relationship with your parents can make you a better and happier person. It is worth having a try!A.Talk about your values.B,Don't argue with your parents.C・Talk about your feelings and dreams.D.you can keep your disagreement and try your best to accept each other.munication problem between groups is also an important problem.F.If it is hard for you to communicate with your parents, don't worry about it.G In this situation, it is especially important to show love and respect to them.Ⅲ.完形填空（每题1.5分，共30分）Anna lived on the side of a valley. One summer, there was a very big 41 , and alot of houses down below Anna's were washed away. Anna's house was 42enoughto escape the flood, so when the water had 43and the other houses standing there44no roof and no walls and all covered with mud, her house was just all right.Her house was quite small, her husband was dead, and she had four children, 45Anna took in one of the families that had lost 46in the flood and she47her home with them until it was 48 for them to rebuild their house.Anna's friends were puzzled(困惑)when they saw Anna do this. They could not 49 why Anna wanted to give 50so much more work and trouble when she already had quite a few children to 51.“ Well," Anna 52her friends, u at the end of the First World War, a woman inthe town where I then lived found herself very 53, because her husband had been killed in the 54and she had a lot of children, 55 I have now. The day beforeChristmas , this woman said to her children, 4 We won't be able to have much for 56this year, so I'm going to make only one present to all of us. Now I'll go and get it.' She came back with a 57who was even poorer than they, and who had no parents. ‘ Here's our 58，’ she said to her children. The children were 59and happy to get such a present. They 60the little girl, and she grew up as their sister. Such was that Christinas present”the two parties to be in 68 same room together. Bullying is a problem that can cause serious damage unless the problem 69(solve) in time. Take any bullying that you hear about very 70( serious). You might even need to call the police in some situations.( )41. A. earthquake B. accident C. flood D. fire( )42. A. below B.high C.big D. small( )43. A. reduced B. came C.hit D. disappeared ( )44. A. to B.of C. by D. with( )45. A. so B. but C. for D. since( )46. A. nothing B. everything C. anything D. something( )47. A. gave B. found C. shared D. built( )48. A. possible B. necessary C. important D. obvious( )49. A. explain B. describe C. understand D. agree( )50. A. them B. herself C.hhn D. us( )51. A. support B. supply C. grow D. educate( )52. A. explained to B. asked for C. talked with D. turned up( )53. A. sad B. poor C. rich D.happy( )54. A. war B. storm C. rain D. flood( )55. A. because B. as C. which D. that( )56. A. Easter B. Halloween C. Thanksgiving D. Christmas ( )57. A. boy B. girl C. student D. teacher( )58. A. food B. festival C. sister D. present( )59. A. angry B. excited C. lovely D. sorry( )60. A. disliked B. gained C. welcomed D. ledIV语法填空(10×1.5=15分)Every day many teens wake up afraid 61 going to school. School bullying(校园欺凌)is a problem 62 affects millions of students, and it makes everyone 63 (worry), not just the kids. Yet because parents, teachers and other adults don't always see it, they may not understand how bad bullying can be.School bullying can threaten students, physical and emotional (感情的)64 (safe) at school and can influence their ability to learn. There 65 (be) a number of things you can do to make schools safe and prevent bullying.For younger kids, the best way of solving the bullying problem is to tell a trusted adult. For teens, the tell-an-adult way depends on the bullying situation. If you see or hear someone being beaten, you should step in 66 (stop) the bullying right way. If you cannot stop it by 67 (you), then find someone who can. It is important to keep the bully away from the person he or she is bullying. Do not force the two parties to be in 68 same room together. Bullying is a problem that can cause serious damage unless the problem 69 (solve) in time. Take any bullying that you hear about very 70 ( serious). You might even need to call the police in some situations.V.短文改错(10×1=10分)I'd like to introduce the class rules making by us all. We should come to school on school uniform. It's polite to greet our teachers when we met them. Secondly, we must listen to carefully in class and be actively in thinking. Also, we ought to do our homework and hand them in on time. Thirdly, we need to keep a classroom clean. And we required to turn off the lights and close the windows after we leave. Fourthly, being friendly is important. We're supposed to get along well and help each other to make progresses together. We all should follow the rules above.VI.写作(25分)假定你是李华，你的英国朋友David发来电子邮件，告诉你他打算署假来中国旅行，希望你给他推荐一个景点.请根据以下要点给他回一封邮件，内容包括，1表示欢迎；2推荐一个景点；3注意事项.注意：1词数100左右；2可以适当增加细节，以使行文连贯.肥东二中2019—2020学年第一学期开学质量检测高二年级英语答案I .听力（每题1.5分，共30分）1-5 BABCB 6-10. ABCBC 11-15. BAACC 16-20. ACACAII.阅读理解（每题2分，共40分）21-23. CAD 24-27. ACBD 28-31. BADC 32-35. BCAD36-40. FBDGA III.完形填空（每题1.5分，共30分）41-45. CBDDB 46-50. BCACB 51-55. AABAB 56-60. DBDBCIV•语法填空15分61. of62. that /which 63. worried 64. safety 65. are66. to stop 67. yourself 68. the 69. is solved 70. seriously V.改错（每题1分，共10分）71. made 72. in 73. meet74. to\ 75. active76.it77.the78 are Λ79. before 80. progressⅥ.写作（25分）（略）。