选择条件国:∈R,f)≥受(I)由题意得:f(x)=2cosx·cos(x+p)=2cosx(cosx.coso-sinx.sin)=2cos2x.coso-sin 2x.sino=cos2x·cosp-sin2x·sin⑩+cospcos(2x+)+cos因为x∈R,2受,所以了的最小值为/受,即c0誓+p=-1.所以p=2k+m号=2ae,因为水行所以。=号(Ⅱ)同选择条件①的(Ⅱ).(18)(共12分)解:(1)由题意令4-x2=0得x=2.所以A(-2,0),B(2,0)因为点Pt,O)在线段AB上(不与端点重合),所以-2
5.Where are the speakers probably?听力材料Text7A.In a store.B.In the street.W:Hello,Mike.It's Helen calling.C.At a police station.M:Hi,Helen.Are you feeling better?You were听absent from school on Thursday and Friday.(8)听力材料Text5W:I feel much better now.I'll be back to school onMonday.I'm calling to ask about the homework.M:Sit down,please.Now tell us what happened.(8)(9)W:I was going window shopping near LindenM:We have chemistry and geography homework.Street when suddenly I found my wallet hadFor chemistry,we are asked to write a report onbeen stolen.the experiment we did on Wednesday.ForM:Don't worry.We'll look into the casegeography,we need to write a 200-word articleimmediately.about what we can do about environmental8gpollution.第二节W:Thank you.By the way,did you have any听第6段材料,回答第6、7题。④tests when I was absent?听M:Yes,we had a math test.I didn't do it well.A 6.What are the speakers talking about?A.Their dreams.B.Their hobbies.力(10)I'm going to study hard this weekend.C.Their jobs.W:Come on.You're sure to get a good gradeA 7.Why is Bella studying English hard?next time.A.To start a new career.M:Thank you very much.B.To have a bright future.C.To realize her childhood dream.听力材料Text6听第8段材料,回答第11至13题。W:John,did you have a dream when you were aC 11.Why does Ellen visit Mr Smith?little boy?(6)A.To apply for a job.B.To show her story.听M:Of course,I did.I dreamed of being a pilot听C.To ask him for help.when I grow up,but unfortunately,I didn'tC 12.What is Jack doing at present?realize it.A.Editing the school newspaper.W:I had the same experience with you.When IB.Organizing some classroom activities.was a little girl,I dreamed of being a greatC.Running for president of the students'union.scientist.But now you see,I'm just a commonA 13.What does Ellen want students to do afteroffice clerk.(7)class?M:OK,forget about it.Bella,do you have someA.Attend concerts.B.Do some writing.practical dreams at present?gC.Read some books.听力材料Text8W:Yes.Now I'm working hard to learn English,M:Come in,please.and I want to be a translator some day.(7)W:Mr Smith?M:You're promising.Just follow your dream and听M:Yes,I am.And you are ...力never give up.力W:My name is Ellen.M:Hello,Ellen.Sit down,please.Is something thematter?W:I'd like you to do me a favor.(11)M:Well,I'm the editor of our school newspaper.Do you have a story?W:I'm planning to run for president of thestudents'union.(12)听第7段材料,回答第8至10题。B 8.What is the probable relationship betweenM:Against Jack?(12)Well,that is news.Whythe speakers?听A.A couple.B.Classmates听do you think the voters will vote for youagainst Jack?C.Teacher and student.W:Because I care about students in our school.C 9.Why does the woman call the man?I want us students to learn more thanA.To ask for sick leave.reading,writing and other subjects in class.IB.To report her health problem.also want us students to do after-schoolC.To get homework information.activities like going to concerts.(13)A 10.In which test did the man do badly?M:Great!I can surely print the news underA.The math test.B.The chemistry testthe title of“Vote for Ellen.She Cares'”C.The geography test.
三第一节信息转述你将听到彼得的一段独白。录音播放两遍请根据所听到的内容和要点提示,在50秒钟内说信息转述及询一段话,包含全部要点。现在你有15秒钟的时间阅读要点提示。1.On Monday6.On Saturday2.On Tuesdayand SundayHow Peter usesthe computer3.On Wednesday5.On Friday4.On Thursday下面请听录音两遍。三现在你有50秒钟的时间准备。你可以这样开始:Let me tell vou about Peter...信息转He is a middle school student.He uses hiscomputer to do lots of things.On Monday,hesearches for some information for his homework.On Tuesday,he sends emails to his friends.Thereis no homework on Wednesday,so he plays及询computer games.On Thursday,he doesn'tuse the computer.On Friday,he talks to hiscousin Bob in America on the Internet.OnSaturday and Sunday,Peter watches movies othe computer.听力材料I'm Peter.I am a middle school student.Iuse my computer to do lots of things.On Monday.I search for some information for my homework.息On Tuesday,I send emails to my friends.There isno homework on Wednesday,so I play computergames.On Thursday,I don't use the computer.I取play basketball with my friends in the sports hall.On Friday,I talk to my cousin Bob in America onthe Internet.On Saturday and Sunday,I watchmovies on the computer.三第二节询问信息你希望了解更多关于彼得的情况,请根据以信息转下提示向她提两个问题。每个问题有15秒钟的准备时间和8秒钟的提问时间。请你准备第一个问题。及1.你会用电脑打印文件吗?Can you print the documents with the computer?问请你准备第二个问题。2.你通常在电脑上玩什么游戏呢?What games do you play on the computer?2
0.20C02(g)+3H2(g)6020CH20*-0.60+0H*+3H*CH;OH(g)空-1.00C02(g)C0*HCOOH CHO,*+H20(g)-1.406H*+6H*+4H*+3H*HCOO*CHO*CHOH*-1.80+OH*+0日*HOH*+5H*反应历程+2H*+H*+H20*①△H(填“>”或“”或“
参考答案:3.June.芳美酒报社4.The girl's brother.EARNINGENGLISH听力材料第18期信息W:When is our friend Peter's birthday,Bob?七年级广东听说训练M:On the fifth day of next month.W:July 5th?(期末)Oh,my brother Paul's birthday is on the取same day.M:Really?Let's have a birthdayparty for them.听以下短文一遍,给你50秒钟的时间准备,然后模仿朗读。当听到“开始录音"的信号后,立即听第三段对话,回答第5-6两个问题。现在你有在50秒钟内朗读短文,当听到要求"停止录音"的10秒钟的阅题时间。④信号时,应立即终止朗读。①5.What's John's favorite subject?模仿Hello,my name is David.Ping-pong is my信(History.Math./Music.)favorite sport.I always play ping-pong with my6.Who is the girl's music teacher?friend after school.I think it's interesting.I have(Miss Green./Miss Brown./Mr.Smith.)five ping-pong balls.There is also a baseball inmy room.It's my brother Jimmy's.He plays it取well,but I can't play it.g第一节听选信息参考答案:5.History.6.Miss Brown听三段对话,每段播放两遍。各段播放前你有听力材料10秒钟的阅题时间。各段播放后有两个问题。请W:What's your favorite subject,John?根据所听到的问题和括号内的提示,选择正确的M:I really like history because it's interesting.W:信息在8秒钟内口头回答。Do you like your history teacher Miss Green?息听第一段对话,回答第1-2两个问题。现在你有M:Yes,but my favorite teacher is Mr.Smith.W:Mr.10秒钟的阅题时间。①息Smith?1.What sports does the girl like?M:He is my math teacher.What about you?取(Baseball./Ping-pong./Soccer.)取W:Hmm...My favorite subject is music because2.Why does Jack like soccer?it's relaxing.Miss Brown is my music teacher(It's easy./It's relaxing./It's interesting.)g参考答案:第二节回答问题1.Ping-pong.听下面一段独白,录音播放两遍。请根据所听2.It's easy.内容回答第7-10四个问题。当听到"开始录音"的听力材料信号后,请在8秒钟内口头回答。W:I like ping-pong.What about you,Jack?现在你有15秒钟的时间阅读这四个问题。④息M:I don't like it.It's boring.W:What sports do息7.What does Jenny like for breakfast?you like?M:I like soccer.I think it's easy for me.W:Oh,8.Where does Jenny eat lunch?取9.When does Jenny go home in the afternoon?I can't play it.I only watch it on TV.取10.Who does Jenny eat dinner with?听第二段对话,回答第3-4两个问题。现在你有10秒钟的阅题时间。④参考答案:3.What month is it now?7.Eggs and milk.信(August.July.June.)8.At school.4.Who is Paul?9.At5:45(The girl's friend./The girl's brother./The获取信息获取10.Her parents.girl's classmate.)豆
第1期A3版Keys:(One possible version)2.Kevin is so humorous that everyone in the class高频词汇likes him.3.solutionII.1.of you2.it was;forI.1.suitable2.ObviouslyIII.The use of the new technology makes it possible4.behaviourto increase the output of this product by 20%perII.1.focuses on 2.is addicted to 3.sign up formonth4.was responsible for语法进阶III.1.volunteers 2.challenge3.recommendI.1.NP2.NP3.AdjP4.AdvP5.NP4.generations5.expertII.1.impressive2.for3.completing5.to become6.where高能句式4.aI.I.Mr Smith raised his voice so that people sitting in7.decided8.be seen10.extremelythe back row could hear clearly9.disabilities
辽宁省实验中学2023-2024学年度高考适应性测试(一)数学参考答案一、单选题(每题只有一个选项是正确答案,每题5分,共40分)2345678CACBCDBB二、多选题(每题至少有一个选项为正确答案,少选且正确得3分,每题5分,共20分)9101112ADACABDBC三、填空题(每题5分,共20分)13.√514.54015.-2sin216.四、解答题(17题10分,其余每题12分,共70分)17.【详解】(1)取PD的中点G,连接AG、EG根据中位线定理,BG/CD,且G=CD=4B又ABIICD,所以ABIIEG,AB=EG,则四边形ABEG为行四边形,÷BEIIAG,:BEC面PAD,AGC面PAD,:BE∥面PAD;(2)以D为原点,DA、DC、过D且垂直底面的直线分别为x、y、:轴建立空间直角坐标系,设AB=1,则D(0,00)、A,0,0)、B(1,0)、C(0,20).设P(x,2)】由lDP=R+y严+z=2.AP=x-ヅ+y+z=2Cr=V2+0-2y+2=2上面联立解方程组得,1=2,BE=31得到4’2’4cos(m,BEm.BEV66面ABCD的法向量为m=(0,0,1),由网41x612√66故直线BE与面ABCD所成角的正弦值为12,答案第1页,共5页
1.①n.东道主②v.主办2.①v.出汗②n.汗水3.①v.作弊②n.骗子PART 2I.1.build up my strength2.bringing honour to China3.set a good example4.the master of the football fieldⅡ.1.champion2.injured3.give up4.lose heart5.athletes6.failure(s)PART 3I.1.Compared with to weight lifting2.make a difference3.rather than4.cut out high-fat foodsⅡ.1.isn'the2.No,I didn't3.doesn't it4.isn't it5.Yes,it was;isn't it语言知识应用篇1.a 2.to try3.addicted4.with 5.which 6.has provided
2023-2024学年上学期高三牛津(JSS)第15-18期参考答案及解析选择性必修二Units1-2参考答案及部分解析参考答案1-5 BACAB6-10ABCBC11-15 CABAB16-20 ACCAB21-25 DDBBC26-30 ADABB31-35 DADCB36-40 EAFCB41-45 BCACD46-50 CADBD51-55 ABDAC56.harmonious57.published58.and59.annually60.selecting61.by62.criteria63.where64.to be displaced65.extends写作第一节One possible version:Take a step towards a healthier lifeOur school's World Walking Day Celebration last week was a remarkable achievement,surpassingour wildest expectations.The refreshing walk brought the entire school together,showcasing theincredible effects of physical activity.Along the way,the atmosphere was electric as students actively engaged in conversationconnected with one another,and took in the awe-inspiring scenery.The day was truly one to cherish,to celebrate,and to enjoy.Not only did it promote physicalactivity and a healthy lifestyle,but it also taught us the significance of determination andperseverance,reminding us that every step counts towards a healthier life.第二节One possible version:As I watched the ball sailing through the air,I was extremely nervous.I felt like my heart was inmy mouth as I waited for it to land.This was the crucial point.To my horror,it sailed past thedefender and landed far from the goalpost.The defender quickly passed it to one of histeammates who kicked it in the direction of their goal.I simply could not believe my eyes!Whatluck!He shot it in just as the whistle blew and the crowd exploded with cheers and screams!Myworld fell apart in an instant.The other team had won and it was because of me!The reality of what had just happenedwashed over me,and I felt a hot flush rise to my cheeks,turning them red.The weight of mymistake felt heavy and the shame that consumed me was unbearable.Too embarrassed to faceanyone,I fled to the nearest bathroom,tears streaming down my face.Leslie,upon seeing me inthis state,offered kind words of comfort that eased my pain.I learned a valuable lesson that daypride comes before a fall,and being humble is essential for success.部分解析阅读第一节A篇
(3)适量运动可延缓心肌衰老,请基于上述研究提出一个合理的解释:27.(12分)我国有近二亿公顷的盐碱地,大部分植物无法在此生存,而耐盐植物藜麦能生长。通过研究藜麦叶片结构发现,其表皮有许多盐泡细胞,该细胞体积是普通表皮细胞的100倍以上,里面没有叶绿体,Na*和CI在盐泡细胞的转运如图所示。请回答下列问题:表皮盐泡细胞▲Na■CIoH:日.切(1)盐碱地上大多数植物很难生长,主要原因是导致植物无法从土壤中获取充足的水分而萎蔫。据图推测,藜麦的耐盐作用机制是通过的方式,将Na+和CI运送到表皮盐泡细胞的(填细胞器名称)中储存起来,从而避免高盐对其他细胞的影响。(2)下表为藜麦盐泡细胞和其他几种普通植物的叶肉细胞膜中部分蛋白的相对含量。其中(填字母)最可能是藜麦,结合题干信息,做出以上判断的理由是蛋白种类BCDNa*载体蛋白812511C1载体蛋白2746葡萄糖转运蛋白38286668(3)将藜麦成熟的盐泡细胞浸于一定浓度的NaCl溶液中,一段时间后放在显微镜下观察,发现原生质体的体积没有发生明显变化。分析其原因:可能是NaCl溶液浓度低于细胞液浓度,没有发生质壁分离;还有可能是发生了28.(14分)为探究遮光处理对马铃薯植株光合作用和产量的影响,以荷兰7号马铃薯品种原种为实验材料,苗齐后设置正常光照(CK)、单层遮光网遮盖处理(乙,)、双层遮光网遮盖处理(乙,)》三组实验,间隔取样测量期为14天,分别测定叶绿素相对含量(SPAD)如下表。回答下列问题:处测定日期品种理06-24(第1次)】0708(第2次)07-22(第3次)0805(第4次)08-19(第5次)CK46.400,40.36739.50040.70023.133荷兰7号Z43.43338.70040.23337.46713.26740.73340.93339.20022.3339.467(1)提取马铃薯叶的色素,需要对叶肉细胞进行破碎,因为叶绿素存在于叶肉细胞叶绿体的上,据表可知,遮光后叶绿素含量总体呈趋势。(2)遮光后,植物为暗反应提供的诚少,短时间内C,含量(3)不同程度遮光条件下,测出荷兰7号马铃薯光合作用的生理指标如下图所示。遮光条件下,气孔导度(Gs)、净光合速率(Pn)的值均减小,Gs减小能引起Pn减小的原因是礼泉县高三生物中期学科素质调研-7-(共8页)扫描全能王创建



答案)
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