高三一轮复习必修二第四章强化训练
2025届高考英语一轮总复习考案2必修二综合过关练习含解析新人教版
必修二综合过关规范限时检测第一部分听力(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。
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．Why is Laura late？ BA．She argued with her boss.B．She had to finish her work.C．She forgot the time.2．Where are the speakers？ AA．On a plane. B．On a bus.C．On a ship.3．What time is it now？ BA．19︰50. B．19︰55.C．20︰00.4．What does the man mean？ CA．He is waiting for someone else.B．He doesn't want to talk with Ms. Miller.C．He is busy now.5．What would the woman like to eat？ BA．A hot dog and a salad.B．A salad and some chips.C．A burger and a salad.其次节(共15小题，每小题1.5分，满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。
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。
听第6段材料，回答第6、7题。
6．What did Ramm find？ AA．A huge planet.B．A star symbol.C．A black hole.7．Where is the woman from？ CA．Scotland. B．England. C．New Zealand.听第7段材料，回答第8至10题。
2021届高三化学一轮复习必修二第四章化学与自然资源的开发利用综合测试试卷 Word版含答案
湖北通山2021届高三化学必修二第四章化学与自然资源的开发利用综合测试试卷（考试时间：100分钟试卷满分：100分）第I卷选择题一、选择题（每小题4分，共48分）。
1、如下图所示，利用海水可提取很多重要的化工原料。
下列有关说法正确的是（）A．第①步中除去粗盐中的SO42—、Ca2+、Mg2+、Fe3+等杂质，加入的药品挨次为：Na2CO3溶液→NaOH溶液→BaCl2溶液→过滤后加盐酸B．第②步中工业上可接受石墨为阴极，铁为阳极，接受阳离子交换膜的电解装置C．第③步中结晶出的MgCl2·6H2O可在空气中受热分解制无水MgCl2D．在第④步中溴元素被氧化，第⑤、⑥步中既有溴元素被氧化也有溴元素被还原2、海水是一个巨大的化学资源宝库，下列有关海水综合利用的说法，正确的是（）A．海水中的氯化物主要是氯化钠，因此“氯”被称为海洋元素B．海水蒸发制海盐的过程中只发生了化学变化C．从海水中可以得到NaCl，电解NaCl溶液可得到金属钠D．从海水中提取Br2、I2的过程中发生了氧化还原反应3、依据下图海水综合利用的工业流程图，推断下列说法正确的是（）已知：MgCl2·6H2O受热生成Mg(OH)Cl和HCl气体等。
A．除去粗盐中杂质（Mg2+、SO42－、Ca2+），加入的药品挨次为：NaOH溶液→Na2CO3溶液→BaCl2溶液→过滤后加盐酸B．在过程②中将MgCl2·6H2O灼烧即可制得无水MgCl2C．从能量角度来看，氯碱工业中的电解饱和食盐水是一个将化学能转化为电能的过程D．从第③步到第⑤步的目的是为了浓缩富集溴4、自然海水中主要含有Na+、K+、Ca2+、Mg2+、Cl-、SO42-、Br-、CO32-、HCO3-等离子，火力发电燃煤排放的含SO2的烟气可利用海水脱硫，其工艺流程如图所示：下列说法错误的是( )A.自然海水pH≈8的缘由是海水中的CO32-、HCO3-水解B.“氧化”是利用氧气将HSO3-、SO32-等氧化生成SO42-C.“反应、稀释”时加自然海水的目的是中和、稀释经氧气氧化后海水中生成的酸D.“排放”出来的海水中SO42-的物质的量浓度与进入吸取塔的自然海水相同5、海洋约占地球表面积的71%，对其进行开发利用的部分流程如图所示。
2012年高考第一轮复习课件-必修二Unit 4
3．They lived on the earth tens of millions of years ago，____________humans came into being... 千百万年前恐龙就在地球上生活，比人类的出现 要早得多…… 4．You should ____________the rainforest________I live and appreciate how the animals live together. 你应该多关注我居住的雨林并欣赏一下动物们是 如何在一起生活的。 1.As a result；die out 2.as；suggests 3.long before 4.pay more attention to；where
高频短语 1．________________ 2．________________ 3．________________ 4．________________ 5．________________ 来 6．________________ 7．________________ 8．________________ 灭亡；逐渐消失 和平地；和睦地；安详地 在危险中；垂危 如释重负；松了口气 突然笑起来；大声笑了出
12．The company____________heavily because of wrong judgement.At present，they are at a____________as to what kind of business to start.(lose) 1.employed 2.bitten 3.fierce 4.contains 5.importance 6.income 7.protection 8.appreciate 9.relief 10.decrease 11.(1)distant (2)distance 12.lost；loss
人教A版高中同步学案数学选择性必修第二册精品习题课件 第四章 综合训练
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8.[2023新高考Ⅰ]设 为数列{ }的前项和，设甲：{ }为等差数列；乙：{ }为等差
数列，则() C
A.甲是乙的充分条件但不是必要条件
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C.甲是乙的充要条件
D.甲既不是乙的充分条件也不是乙的必要条件
[解析]甲：{ }为等差数列，设其首项为 ，公差为，则 = +
[解析]设等差数列{ }的公差为,因为 ∈ ∗ 时,( + ) < + ,即
高考政治一轮复习统编版选择性必修二第三、四单元
选择性必修二第三单元就业与创业第四单元社会争议解决易混易错知识点辨析1.经营者不正当竞争的行为“搭便车”（也称“混淆行为”）虚假宣传、制作虚假广告的行为其他不正当竞争的行为①含义：经营者利用他人已经建立的商业信誉，通过某种假冒或者仿冒手段，使消费者发生误认的混淆行为。
②危害：既损害他人的商业信誉，又可能对消费者构成欺诈，损害社会公共利益，属于不正当竞争。
①经营者不得对其商品的性能、功能、质量、销售状况、用户评价、曾获荣誉等作虚假或者引人误解的商业宣传，欺骗、误导消费者；②经营者不得通过组织虚假交易等方式，帮助其他经营者进行虚假或者引人误解的商业宣传。
法律还规定，禁止实施商业诋毁行为、不当有奖销售行为、商业贿赂行为、妨碍或者破坏其他经营者合法提供的网络产品或者服务正常运行的行为等不正当竞争行为。
①仿冒：模仿别人的产品，使消费者发生误认，但是商品的质量是合格的，仿冒是一种欺诈行为；②假冒：假借别人的牌子，生产质量不合格的商品（假冒伪劣），假冒是一种违法行为。
【对点训练】1．（2022·北京海淀·高三期末）“二选一”是指网络购物、外卖送餐等领域的平台运营企业利用自身优势地位和平台内商家对平台的依赖性，采取不正当手段强迫商家只能在本平台或其他平台选择一个进行经营。
平台运营企业实施“二选一”行为（）①侵害了消费者自主选择的权利，消费者可以通过消费者协会维护自身权益②侵害了平台内商家自主经营的权利，商家可以向市场监督管理部门举报③是对竞争对手的不正当竞争行为，对方可以提交仲裁机构进行商事仲裁④限制了相关市场竞争，破坏了市场秩序，人民检察院应对其提起刑事诉讼A．①② B．①③ C．②④ D．③④2.（2022·浙江省东阳市第二高级中学高二阶段练习）春节期间，某珠宝店打出“购买任何一件首饰均赠送一份特大礼物”的宣传广告。
小黄夫妇在该店购买了一枚戒指，结果得到的“特大礼物”只是一只大气球。
高考英语(人教)大一轮复习领航课件：必修二+Unit+4 Wildlife+protection
7．pay attention to__注__意____________ 8．pick out___挑__选__出_________ 9．come into being_形__成__；___产__生______ 10．according to_按__照__；__根__据__…__…__所_ 说 11．so that_以__至__于__；__结__果_____ 12．do harm to_损__害__；__伤__害__；__对__…_ …有害
话题积累 水滴石穿 基础盘点 自我演练 要点精研 考点讲练
课时规范训练
话题：生物保护
1.bring about 带来
2.result in 导致
3.die out 灭亡；逐渐消失 4.tear down 拆掉；拆毁
5.in peace 和平地；和睦地；安详地
6.in danger(of) 在危险中；垂危
☞即时演练 单句语法填空 1．Those species inadaptable to changing conditions may die __o_u_t____. 2．I smiled ___in_____ relief after I heard I had passed the examination. 3 ． Something must be done to protect the environment from _b_e_in_g__p_o_ll_u_te_d_(pollute)．
人教版高中数学选择性必修第二册第四章专题强化练1等差数列的综合运用 同步练习(含解析)
专题强化练1等差数列的综合运用一、选择题1.(2020安徽阜阳高二上期末,)已知等差数列{a n}的前15项和为45,若a3=-10,则a13=()A.16B.55C.-16D.352.(2020山东济宁高二上期末,)朱世杰是历史上最伟大的数学家之一,他所著的《四元玉鉴》卷中“如像招数”五问中有如下问题:“今有官司差夫一千八百六十四人筑堤,只云初日差六十四人,次日转多七人,每人日支米三升.”其大意为“官府陆续派遣1864人前往修筑堤坝,第一天派出64人,从第二天开始每天派出的人数比前一天多7人,修筑堤坝的每人每天分发大米3升.”在该问题中前5天共分发多少升大米?()A.1170B.1440C.1512D.17723.(2020山东临沂高二上期末,)已知S n为等差数列{a n}的前n项和,且 77+4a4=30,则3a5-a7=()A.6B.12C.24D.484.(2019辽宁沈阳东北育才学校高二期中,)在等差数列{a n}中,已知a5+a6=4,则log2(2 1·2 2·…·2 10)=()A.10B.20C.40D.2+log255.(2020北京石景山高三上期末,)在等差数列{an}中,设k,l,p,r∈N*,则“k+l>p+r”是“a k+a l>a p+a r”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6.(多选)(2020山东潍坊高二上期末,)设数列{a n}是等差数列,公差为d,S n是其前n项和,a1>0且S6=S9,则()A.d>0B.a8=0C.S7或S8为S n的最大值D.S5>S6二、填空题7.(2019陕西西安一中高二上月考,)在等差数列{a n}中,若a3+a5+a7+a9+a11=100,则3a9-a13的值为.8.(2020辽宁沈阳高三上教学质量检测,)已知等差数列{an}的前n项和为S n,且a1+a3=10,S4=72.数列{b n}中,b1=2,b n b n+1=-2,则a1b2000=.9.(2020河南濮阳高二上期末,)若数列{a n}满足a1=0,a2=1,a3=3,且{a n+1-a n}为等差数列,则a n=.10.(2020辽宁辽阳高三上期末,)在数列{a n}中,a1=3,且 +1-2 +1- -2 =2.(1){a n}的通项公式为;(2)在a1、a2、a3、…、a2019这2019项中,被10除余2的项数为.三、解答题11.(2020广东中山一中高二上第二次统测,)某化工企业在2019年底投入100万元购入一套污水处理设备.该设备每年的运转费用是0.5万元,此外每年都要花费一定的维护费,第一年的维护费为2万元,由于设备老化,以后每年的维护费都比上一年增加2万元.(1)求该企业使用该设备x年的年平均污水处理费用y(万元);(2)问:为使该企业的年平均污水处理费用最低,该企业几年后需要更换新的污水处理设备?12.(2020山东高考第一次模拟,)已知S n为数列{a n}的前n项和,a n>0, 2+2a n=4S n+3,且a n b n=1.(1)求数列{b n}的通项公式;(2)求满足b1b2+b2b3+…+b n b n+1<17的n的最大值.答案全解全析一、选择题1.A依题意得,15( 1+ 15)2=45,∴a1+a15=6,∴a3+a13=a1+a15=6,又a3=-10,∴a13=16.故选A.2.A由题意得,每天分发的大米升数构成等差数列{a n},设公差为d,则d=7×3=21,记第一天共分发大米为a1=64×3=192(升),则前5天共分发大米5a1+5×(5−1)2×d=5a1+10d=5×192+10×21=1170(升).故选A.3.B设等差数列{a n}的首项为a1,公差为d,由 77+4a4=30,得17×7×( 1+ 7)2+4a4=30,又a1+a7=2a4,所以5a4=30,即a4=6.所以3a5-a7=3(a1+4d)-(a1+6d)=2a1+6d=2(a1+3d)=2a4=12,故选B. 4.B因为2 1·2 2·…·2 10=2 1+ 2+…+ 10=25( 5+ 6)=25×4,所以log2(2 1·2 2·…·2 10)=log225×4=20.故选B.5.D若等差数列{a n}为a1=5,a2=4,a3=3,a4=2,a5=1,……则当k=1,l=5,p=2,r=3时,k+l>p+r成立,但a k+a l>a p+a r不成立,所以充分性不成立;当k=1,l=2,p=3,r=4时,a k+a l>a p+a r成立,但k+l>p+r不成立,所以必要性不成立.综上可知,“k+l>p+r”是“a k+a l>a p+a r”的既不充分也不必要条件,故选D.6.BC由S6=S9得,S9-S6=0,即a7+a8+a9=0,又a7+a9=2a8,∴3a8=0,∴a8=0,∴B正确;由a8=a1+7d=0,得d=- 17,又a1>0,∴d<0,∴数列{a n}是单调递减的等差数列,∴a n>0(n∈N*, ≤7),a n<0(n∈N*, ≥9),∴S7或S8为S n的最大值,∴A错误,C正确;∵S6-S5=a6>0,∴S6>S5,∴D错误.故选BC.二、填空题7.答案40解析根据等差数列的性质,知a3+a5+a7+a9+a11=(a3+a11)+(a5+a9)+a7=5a7=100,即a7=20,故3a9-a13=a5+a13+a9-a13=a5+a9=2a7=40.8.答案21解析设{a n}的公差为d,∵S4=4( 1+ 4)2=2(a1+a4)=72,∴a1+a4=36,又a1+a3=10,∴a4-a3=d=26,又a1+a3=2a1+2d=10,∴a1=-21.∵b n b n+1=-2,∴b n≠0,∴b n+1=-2 ,∴b n+2=-2 +1=-2-2=b n,∴{b n}是以2为周期的周期数列,∴b2000=b2=-2 1=-1,∴a1b2000=21.9.答案 2-n2解析设等差数列{a n+1-a n}的公差为d,由题意得,a2-a1=1,a3-a2=2,∴公差d=2-1=1,∴a n-a n-1=1+(n-2)×1=n-1(n≥2,n∈N*),∴a n=a1+(a2-a1)+(a3-a2)+…+(a n-a n-1)=0+1+2+3+…+(n-1)=( -1) 2= 2-n2,n≥2,n ∈N*.经检验,此式对a1也适用,∴a n= 2-n2(n∈N*).10.答案(1)a n=2n2-n+2(2)403解析(1)∵ +1-2 +1- -2 =2,且 1-21=1,1为首项,2为公差的等差数列,∴ -2 =1+2(n-1)=2n-1,∴a n=2n2-n+2.(2)被10除且余数为2的整数可表示为10k+2(k∈Z),令a n=2n2-n+2=10k+2,可得10k=n(2n-1),∵n∈N*,且1≤n≤2019,2n-1为奇数,∴n为10的倍数或2n-1为5的奇数倍且n为偶数.当n为10的倍数时,n的取值有10、20、30、...、2010,共201个;当2n-1为5的奇数倍且n为偶数时,n的取值有8、18、28、 (2018)共202个.综上所述,在a1、a2、a3、…、a2019这2019项中,被10除余2的项数为201+202=403.三、解答题11.解析(1)依题意得,该企业使用该设备x年的维护费为(2+4+6+…+2x)万元,则总费用为[100+0.5x+(2+4+6+…+2x)]万元,因此y=100+0.5 +(2+4+6+…+2 )=x+100 +1.5(x∈N*).(2)由(1)及x∈N*可得,y=x+100 +1.5≥当且仅当x=100 ,即x=10时等号成立.即当x=10时,y取得最小值.∴该企业10年后需要更换新的污水处理设备.12.解析(1)由 2+2a n=4S n+3①得,当n=1时, 12+2a1=4S1+3,又S1=a1,∴ 12-2a1-3=0,解得a1=3或a1=-1.∵a n>0,∴a1=3.当n≥2时,-12+2a n-1=4S n-1+3②,①-②整理得a n-a n-1=2(n≥2,n∈N*),∴数列{a n}是首项为3,公差为2的等差数列,∴a n=3+(n-1)×2=2n+1,∴b n=12 +1.(2)设c n=b n b n+1=1(2 +1)(2 +3)=12所以b1b2+b2b3+…+b n b n+1=121117+…+12 +1=12令12-17<0,解得n<9,n∈N*,所以n的最大值为8.。
2022届一轮复习北师大版高中英语单元梳理：必修二 Unit4 Cyberspace 课件
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【词块必记】 (1)focus on focus one’s eyes on focus one’s attention on focus one’s mind on (2)in focus out of focus
【人教版】2019届高三英语一轮复习练习案 必修二 Unit 4 含答案
必修二Unit 4[基础回顾]Ⅰ.单句语法填空(导学号02516075)1．More attention should be paid to improving(improve) the safety of school buses，which has become a big concern of the whole society.2．I received a letter containing(contain) some important information about the project.3．After he retired，the old man did all he could to protect the old temple from being damaged(damage)．4．You needn't have taken a taxi.Why didn't you catch the last bus as I told you?5．Instead，I suggested choosing(choose) some students to see him on behalf of the whole class.(2015·浙江卷，书面表达)6．The boss of the company is trying to create an easy atmosphere where his employees (employ) enjoy the work.(2015·天津卷，单选)7．No one has come up with a convincing explanation of why dinosaurs died out.8．We appreciate participating(participate) in this activity，which has helped to build an emotional connection between the old and the young.9．The only way to succeed (succeed) at the highest level is to have total belief that you are better than anyone else on the sports field.10．It makes our school dirty and unpleasant，and does harm to the image of our school.Ⅱ.单句改错(每句一错)(导学号02516076)1．She is a kind-hearted woman and often has a mercy on people who are in trouble.去掉mercy前的a2．Mary has employed himself in making preparations for her trip to America all the afternoon.himself→herself3．The scientist explained in his book how the universe was came into being.去掉was 4．Justin suggested that I went with him to a private place where we could be alone. went→go5．With the government's aid，those affecting by the earthquake have moved to the new settlements.affecting→affectedⅢ.佳句写作(导学号02516077)1．如果你按照我说的去做，你的梦想将很快实现.(as)答案：If you do as I say，your dream will come true soon.2．我们已经没有时间来仔细考虑了.(There be句型)答案：There has been no time for us to think it over.3．我们钦佩他们解决那个问题的方法.(way)答案：We admired the way in which/that he solved the problem.4．如果你能帮我个忙，我将不胜感激.(appreciate)答案：I would appreciate it if you could offer me a hand.5．她无法再克制自己了——她突然发怒了.(contain oneself)答案：She couldn't contain herself any longer—she burst into anger.[技能提升]Ⅰ.阅读理解(导学号02516078)(2018·漳州模拟)When I was little，I'd see tons of bats flying around streetlights at night in my neighborhood in upstate New York.But I'll never forget the first time when I saw a bat up close.By the time I turned 7，though，I noticed something strange: All the bats in my neighborhood had disappeared，and I wondered why.Then，three years ago，when I was 11 and visiting the state fair，I learned what had happened to my town's bats.A disease called “white nose syndrome”had killed 93 percent of New York State's bats.I was horrified.Then I wrote a letter to the host of an environmental program on the local radio station，asking if they could do a show on bats.They did!But I still wanted to find a way to educate people face to face.I reached out to a teacher I had in elementary school and asked if I could make a presentation to her class.I described how bats help farmers by eating crop-damaging insects.It went over so well that other teachers started requesting me.Over the past three years，I've talked in front of everyone from 5-year-old to senior citizens！Many people think that bats are blind，and that they always carry diseases，but none of that is true.The more I present，the more I notice that I am changing minds.And while getting people to respect bats is pretty hard，getting them to respect me has been difficult too.When I first applied to host a booth(摊位) at a local street fair，the managers thought I was too young.But I refused to take “no” for an answer.I continued to make_my_case，and they said yes! The best part is，I impressed them so much—100 visitors on my first day—that they now invite me back every year.[语篇解读]本文主要讲述的是作者是如何拯救蝙蝠的.1．All the bats in the neighborhood disappeared because they________.A．were killed by a diseaseB．moved to another habitatC．were hunted by other animalsD．hid in a place where people couldn't find them解析：A[细节理解题.根据第二段第二句可知，社区所有蝙蝠的消失是由一种疾病导致的.]2．The author wrote a letter to the host in order to ask them to________.A．donate some money to save batsB．make a radio program about batsC．announce new findings about batsD．finish some questionnaires about the fair解析：B[细节理解题.根据第二段可知.作者给主持人写了一封信，想让他们制作一期关于蝙蝠的节目.]3．How did the author save bats?A．By building a new home for them.B．By volunteering to work in the wild.C．By improving their living environment.D．By educating people that they are beneficial.解析：D[推理判断题.根据第三段I described how bats help farmers by eating crop-damaging insects.可知，作者是通过教育人们蝙蝠是有益的，来拯救蝙蝠.] 4．What does the underlined phrase “make my case” in the last paragraph mean?A．Make impressive persuasion.B．Look into the matter.C．Quarrel with them.D．Stick to the facts.解析：A[词义猜测题.根据前面的句子可知，当“我”第一次申请在当地的集市上办一个摊位时，经理们认为“我”太年轻.但“我”拒绝接受“不”的回答.再结合they finally said yes可判断出，此处make my case是继续努力说服经理们让我“办”一个摊位.] Ⅱ.阅读填句(七选五)(导学号02516079)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.In my neighbourhood，I've seen corner stores robbed by teenagers and people beaten on the street.I've had my house robbed three times.I'm sick of it!Since the seventh grade，I've found a safe haven(避难所) at the Boys & Girls Clubs of Greater Milwaukee after school.Someone told me that they had a football team，and that's why I started going.__1__It's so nice to know that I can go in and talk to them about anything that is bothering me.One day，La Ketta，a senior program manager at the club，heard us talking about howfrustrated we were by the Ketta said，“Why don't we make a documentary about it？”__2__We talked about why the violence is happening，how it is affecting our neighbourhood，and what we can do to put an end to it.Finally，we were able to premiere(首次公演) it at a real theater—in front of a sold-out crowd of about 1,000 people! I felt like a celebrity(名人)．The local TV news channel interviewed me，which made my heart race.And in the Q & A session after the movie，a 5-year-old boy went up to the microphone and asked，“How can I be more like you？”__3__Since the premiere，I've seen so many new faces at the Boys & Girls Clubs，which means that our message got through to some parents.But that's not the only effect.__4__This experience has taught me that you don't have to be an adult to make change.You don't need to be an elected official either.__5__You might feel timid(胆怯的)，but trust me：You have more power than you think.A．It was the sweetest thing ever.B．Usually，though，I'm too busy watching my back.C．I wish I could let my mind wander to a football play.D．You can get up one day and decide to make the world a better place.E．But once I joined the club，the people there started to feel like families to me.F．We've gotten calls from people across the country who want to show our movie!G．She found people teach us to use video equipment，and then we interviewed some community members.[语篇解读]本文是记叙文.一位高中生与俱乐部成员一起制作纪录片反对社会暴力.1．E[E项与下文的“It's so nice to know that I can go in and talk to them about anything that is bothering me.”相呼应.]2．G[G项与上文的“Why don't we make a documentary about it？”及下文的“We talked about...”相呼应.]3．A[A项中的It指代上文的“...a 5-year-old boy went up to the microphone and asked，‘How can I be more like you？’”.]4．F[F项与上文的“But that's not the only effect.”相呼应，说明首次公演不仅在当地引起了轰动，而且引起了全国范围内的关注.]5．D[D项与上文的“...you don't have to be an adult to make change.You don't need to be an elected official either.”相呼应，说明改变世界无须等待，应该即刻行动.] Ⅲ.语法填空(导学号02516080)Over the years，I have met some interesting people.Two of 1.________most interesting people were two elderly sisters，Joan and Bernice,2.________way of talking about people inspired me.It was always a 3.________(pleasant) to visit these two sisters.Just being greeted at the door was a joy.They couldn't be 4.________(happy) when seeing me.I always heard about the people who were there before me.Every person 5.________(talk) about in a positive way.The conversation would go something like this，“Oh，Kay，so-and-so was here yesterday，she 6.________(be) just ‘the salt of the earth’，isn't she？” The other sister would reply，“Oh，yes! You just can't believe 7.________wonderful she is.”I never heard they said a negative word about anyone.NEVER!I understood why these two had so much company when other people complained that no one cared about 8.________(they)．It was their attitude 9.________people.There was no doubt that when the next person came to visit，he was going to hear how I was “the salt of the earth”．What a wonderful example these two elderly sisters were to me! I will always be 10. ________(thank) that I had the opportunity to know them.答案：1.the 2.whose 3.pleasure 4.happier5．was talked 6.is7.how8.them9．toward(s)/to10.thankful。
人教新课标届高考一轮复习必修二Unit4Unit5 A卷
最新 精品 Word 欢迎下载 可修改单元训练金卷·高三·英语卷（A ）必修二 Unit 4-Unit 5注意事项：1. 答题前，先将自己的姓名、准考证号填写在试题卷和答题卡上，并将准考证号条形码粘贴在答题卡上的指定位置。
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第Ⅰ卷第一部分 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。
AAs the saying goes, “Without music, life would be a mistake.” Music is very important in our lives and here are four of the greatest musicians in history.Ludwig van Beethoven(1770-1827)Born in Bonn, Germany, Beethoven never held an official position in Vienna. He supported himself by giving concerts, teaching piano, and the sale of his compositions(作品). The last 30 years of Beethoven’s life were filled with a lot of hard times, the first of which was his deafness. Beethoven’s music greatly influenced the next generation of musicians.Johann Sebastian Bach(1685-1750)Bach, “the father of modern music”, was born in Eisenach, Germany. His parents died when he was nine years old, and in 1695 he went to live with his brother Johann Christoph, who was an organist(风琴手) in Ohrdruf. He stayed there until 1700. Eight years later, he moved back to Weimar, where he served as court organist for nine years. His music greatly influenced classical music.Frédéric Chopin(1810-1849)Chopin was born in Warsaw, Poland. He showed a talent for the piano at a very young age. Chopinbegan composing when he was still a child, but some of his early works have been lost. He gave his first public concert in 1818. Chopin was considered as the leading musician of his time.Franz Schubert(1797-1828)Schubert was born and died in Vienna. Unlike most of his predecessors, Schubert was not a great performer. He never had much money but he was very productive. He wrote his first masterpiece when he was only sixteen. However, he died young, before his talents had even been known. 21. Beethoven did not make a living by ________. A. teaching students B. giving concerts C. selling his worksD. doing business22. Bach worked as an organist in Weimar until ________. A. 1765B. 1707C. 1750D. 171723. What do we know about the four musicians? A. They all lived a hard life at their old age. B. They were all talented musicians. C. They became famous at a young age. D. They were all good at playing the piano.BHow do young people learn best? This is something I think about a lot when teaching foreign languages to young people. I often find that traditional teaching methods are neither always effective nor interesting for young brains to learn a foreign language.After moving to southern Italy I was lucky to have had the chance to run a private course teaching English to under 7-year-olds. I was aware that children liked to sing and enjoyed games so I wanted to use these tools to help my students develop English conversation skills. I found some fun and easy songs online, which they loved. I also found the English versions of some nursery rhymes they recognized. All of them were very interesting and helpful but students could still not have a basic conversation in English.I knew I wanted these guys to be fully immersed in the language I was teaching and I also wanted them to speak it. I was keen to give 90% of my lessons in English but I kn ew it’d be difficult to get them to speak in a foreign language they have little or zero exposure to outside our lessons, so I had to come up with a simple yet effective plan.此卷只装订不密封 班级 姓名 准考证号 考场号 座位号One day I decided to prepare a simple dialogue in English, so that I could get them to sing and chant(有节奏地反复地唱) it, rather than simply getting students to repeat the phrases. I discovered that chanting some conversational sentences was the way to get students to speak in English — it worked!So when teaching English to young people now, I encourage them to make up their own songs and chants to help them remember expressions or complex sentences.24. What is the passage mainly talking about?A. How to make young learners like a foreign language.B. How to teach foreign languages to young people.C. How to run a private course in southern Italy.D. How to help the younger children with studies.25. What does the underlined word “immersed” mean in the 3rd paragraph?A. AmusedB. BuriedC. RelatedD. Informed26. How did the author feel when faced with difficulty in teaching?A. He found it impossible to teach children with little English.B. He tried to be a patient and responsible teacher.C. He realized he was unable to finish the task of teaching.D. He actually kind of discouraged and disappointed.27. What can be inferred from the passage?A. Mistakes are an important part of education.B. A teacher can never tell where his influence stops.C. A teacher should understand his students’ needs.D. Confidence is the first step on the way to success.CWhat to do if you find a sick, injured or abandoned wild animal General tipsDon’t remove an animal from its natural habitat(the animal may not need assistance, and you could do more harm than good).Check the animal periodically for 24-48 hours.Keep your distance.Young animals babiesIf you find an abandoned young animal, separated from adults or left on its own — keep cats and dogs away and limit noise.An adult may not return if it is noisy or if people are close by.Get help for a wild animalIn Ontario, wildlife rehabilitators(复健员) are authorized by the Ministry of Natural Resources and Forestry to provide temporary care to sick, injured and abandoned wildlife so it can be returned to the wild. Rehabilitators commit significant time and resources, and many seek donations to assist with their work.Every effort is made by wildlife rehabilitators to ensure wildlife in their care do not become tame(驯服).Find a wildlife rehabiltatorTo get help for a sick, injured or abandoned animal, you can contact:●an authorized wildlife rehabilitator●your local Ministry of Natural Resources and Forestry district officeHealth risksIf you come across sick or diseased wildlife and you suspect there is a public health risk(such as West Nile virus), contact your regional or local health unit immediately: Ontario Public Health Units.Public safetyIf the animal is alive and there is a public safety issue, contact your local police department.28. Which is the general solution if you find an abandoned animal?A. Leave it where it is and observe it.B. Remove it from its natural habitat.C. Stay with it and care for it.D. Pretend not to have seen it.29. Wildlife rehabilitators are devoted to .A. providing constant care to wildlifeB. making wild animals well-tameC. releasing wildlife back to the wildD. donating large sums to charity30. Who will you contact if you find a wild animal at the risk of public health in Ontario?A. Ontario Public Health Units.B. An authorized wildlife rehabilitator.最新精品Word 欢迎下载可修改C. The local police department.D. The Ministry of Natural Resources and Forestry.31. What’s the purpose of the text?A. To teach people how to train animals.B. To give advice on protecting endangered wildlife.C To call on people to raise pets.D. To introduce the animals in Ontario.DHaving a learning disability doesn’t mean you can’t learn, but you’ll need some help and need to work extra hard. If you have a learning disability such as dyslexia or dyscalculia, remember that you are not slow or stupid.Learning disabilities can be genetic(基因的). That means they can be passed down in families through the genes. But kids today have an advantage over their parents. Learning experts now know a lot more about the brain and how learning works, and it’s easier for kids to get the help they need.Dyslexia is a learning disability that means a kid has a lot of trouble reading and writing. Kids who have trouble with math may have dyscalculia. Other kids may have language disorders, meaning they have trouble understanding language and understanding what they read. It can be confusing, though. How do we tell if a kid has a learning disability? Reading, doing math, and writing letters may be tough for lots of kids at first. But when those troubles don’t fa de away(逐渐消失) and it’s really difficult to make any progress, it’s possible that the kid has a learning disability.Finding out you have a learning disability can be upsetting. You might feel different from everyone else. But the truth is that learning disabilities are pretty common. And if your learning specialist or psychologist has figured out which one is right track. Now, you can start getting the help you need to do better in school.But for this special help to really work, you’ll need to practice the new skills you’re learning. It may take a lot of efforts every day. That can be a challenge, but you can do it. Soon, you’ll enjoy the results of all your hard work: more fun and success in school.32. What do we know about the learning disability?A. It is a physical disease.B. It can be treated by doctors quickly.C. It happens to children who are lazy.D. It gets you into trouble when learning a subject.33. Children are likely to have a learning disability ________.A. if their parents have the same problemB. if they are not interested in a subjectC. if they don’t get help in timeD. if they don’t work hard34. How can you know if you have a learning disability?A. Your teacher says you are a slow student.B. You can’t make progress after hard work.C. You have trouble with some lessons at first.D. Your learning style is different from others.35. What’s the main purpose of the text?A. To find out the reasons for learning disabilities.B. To get parents to know more about their children.C. To help people know and deal with learning disabilities.D. To ask teachers to help students with learning disabilities.第二节七选五（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。
2012年高考第一轮复习课件-必修二Unit 4 (1)
10．The government shouldn’t____________(减 少)the income of the workers by raising their taxes. 11．用distant的适当形式填空 (1)Nowadays，with such a good public transportation system，it’s easy to take trips to____________places. (2)The faces of four famous American presidents on Mount Rushmore can be seen from a____________of 60 miles.
保护……不受……(危害) 注意 形成；产生
9．________________ 按照；根据……所说 10．________________ 以致于；结果 1.die out 2.in peace 3.in danger(of) 4.in relief,5.burst into laughter 6.protect...from 7.pay attention to e into being 9.according to 10.so that
12．The company____________heavily because of wrong judgement.At present，they are at a____________as to what kind of business to start.(lose) 1.employed 2.bitten 3.fierce 4.contains 5.importance 6.income 7.protection 8.appreciate 9.relief 10.decrease 11.(1)distant (2)distance 12.lost；loss
第四单元+社会争议解决+课件-2025届高考政治一轮复习统编版选择性必修二法律与生活
案件
了和气，有成本
考法2.把握当事人的诉讼权利
诉讼权利
委托诉讼代 理人或辩护 人的权利
权利内容
当事人因身陷纠 纷而参与诉讼时 ，很可能面临缺 乏法律知识与技 能、无暇参加诉 讼活动等问题， 需要委托其他人 帮助自己进行诉 讼
意义
维护当事人合 法的实体权利 和程序权利， 使案件得到公 正的审理
注意事项
用
据，证人证言，当事人的陈述，鉴定意见，勘验笔录、现
证
场笔录③刑事诉讼法规定的证据：物证，书证，证人证言
据
，被害人陈述，犯罪嫌疑人、被告人供述和辩解，鉴定意
见，勘验、检查、辨认、侦查实验等笔录，视听资料、电
子数据
重 收集与保存证提非常重要，如果缺乏证据意识，不注意收
要 集和保存证据，一旦发生纠纷，难免处于不利地位
2.与诉讼相关的试题的答题模版 （1）题型特点： 此类试题往往以具体案例入手，分析出现争议的原因，并提供 合理化建议。 （2）解题方法 ①通读材料，理清材料讲述的事件大概。 ②联系所学关于诉讼、调解、仲裁的相关知识，判断该题是否 属于诉讼。重点明确仲裁与诉讼的区别。 ③结合材料，联系诉讼的知识作答。
性
①民事诉讼实行“谁主张，谁举证”的举证原则。法律规定 当事人对自己提出的主张有责任提供证据。没有证据或者证 举 表 据不足的，由负有举证责任的当事人承担不利后果。特殊情 证 现 况实行举证責任倒置原则②在行政诉讼中，作为被告的行政 责 机关应当提供作出该行政行为的证据和所依据的规范性文件 任 。其原因在于行政诉讼的核心问题是行政机关的行政行为是 否合法，而行政相对人在举证能力上无法与行政机关抗衡。 因此，法律以这样的举证责任分配方式来体现公正③在刑事 诉讼中，公诉案件举证责任由人民检察院承担，自诉案件举 证责任由自诉人承担 基 以事实为根据，以法律为准绳，这是任何诉讼都必须遵循的 本 基本原则。证据作为认定案件事实的依据，是诉讼的灵魂。 原 在诉讼中全面贯彻证据裁判规则，有利于正确解决纠纷，在 则 每一个司法案件中实现公平正义
2020届一轮复习人教版必修二Unit4学案设计（39页）
2020届一轮复习人教版必修二Unit4学案设计话题素材——野生动物保护好词1.decrease v. 减少；降低2.conservationn. 保存；保护3.survival n. 幸存；存活4.habitat n. 栖息地5.peacefuladj. 和平的6.attach_importance_to... 认为……很重要7.take_action 采取行动8.do what we can 尽我们所能9.do_harm/damage_to 对……有伤害10.keep the balance of... 保持……平衡11.be concerned about 关注；担心12.cut_down 砍伐13.live in harmony with... 与……和谐相处14.run out of 用完；用尽15.arouse people's awareness of environmental protection 提高人们的环保意识佳句1.There_is_no denying that it_is_human_beings_that led to the disapperance of the poor animals.不能否认的是正是人类才导致了这些可怜的动物的消失。
2.With_your_help,_we believe we can improve_the_living_environment of the animals soon, thus increasing its number.在你的帮助下，我们相信我们很快就能够改善动物的生存环境，这样它们的数量就会增加。
3.Powerful_measures_should_be_taken to punish those who do_harm_to wildlife.应采取强有力的措施去惩罚那些伤害野生动物的人。
[精美语篇]With the development of society and economy, many animals have disappeared during the long history of the earth and many more are in danger of extinction for many reasons. Above all, their habitat is threatened, resulting in a lack of food. Besides, they are being hunted without mercy. As we know, animals are our friends. To protect them is to protect ourselves. So we should first raise people's awareness of protecting the environment and not buying products of endangered species because when the buying stops, the killing can, too. Second, we can collect money to help protect wildlife and build reserves. As for the government, it should pass laws to prevent endangered animals from being hunted.In a word, human beings should learn to live in peace with wildlife. If everyone makes a little contribution, it will make a big difference for wild animals. Let's take action right now.高频单词1．protection (n.) 保护→protect (vt. &vi.) 保护→protective (adj.) 保护的2．decrease (vi.&vt.) 减少；(使)变小；(使)变少→increase (vi. &vt.) (反义词)增加3．loss (n.) 损失；遗失；丧失→lose (vt. &vi.) 遗失；丢失；损失→lost (adj.) 迷路的；迷失的4．reserve (n.) 保护区(vt.) 保留；预留5．hunt (vt. &vi.) 打猎；猎取；搜寻→hunter (n.) 猎人→hunting (n.) 狩猎运动；打猎6．respond (vi.) 回答；响应；做出反应→response (n.) 回答；反应7．distant (adj.) 远的；远处的→distance (n.) 距离；远方8．relief (n.) (痛苦或忧虑的)减轻或解除；减轻痛苦的事物→relieve (vt.) 使减轻；缓解9．laughter (n.) 笑；笑声→laugh (v.&n.) 笑；发笑→laughing (adj.) 可笑的；带笑意的10．mercy (n.) 仁慈；宽恕；怜悯→merciful (adj.) 仁慈的；宽容的11．contain (vt.) 包含；容纳；容忍→container (n.) 容器12．affect (vt.) 影响；感动；侵袭→affection (n.) 喜爱；感情→effect (n.) 影响；效果；作用13．appreciate (vt.) 鉴赏；感激；意识到→appreciation (n.) 欣赏；感谢14．succeed (vi.) 成功(vt.) 接替；继任→success (n.) 成功→successful (adj.) 成功的→successfully (adv.) 成功地15．employ (vt.) 雇用；利用(时间、精力等)→employer (n.) 雇主→employee (n.) 雇员；雇工→employment (n.) 雇用；使用；就业→unemployment (n.) (反义词)失业；失业率16．harm (n. &vt.) 损害；危害→harmful (adj.) 有害的→harmless (adj.) 无害的17．bite (vt. &vi.) 咬；叮；刺痛→bit (过去式)→bitten (过去分词) 18．inspect (vt.) 检查；视察→inspection (n.) 视察→inspector (n.) 检查员；视察员19．incident (n.) 事件；事变20．secure (adj.) 安全的；可靠的→security (n.) 安全；安全感21．fierce (adj.) 凶猛的；猛烈的→fiercely (adv.) 凶猛地；凶残地重点短语1．die_out 灭亡；逐渐消失2．in_peace 和平地；和睦地；安详地3．in_danger_(of) 在危险中；垂危4．in_relief 如释重负；松了口气5．burst_into_laughter 突然笑起来；大声笑了出来6．protect...from 保护……不受……(危害)7．pay_attention_to 注意8．pick_out 挑选出9．come_into_being 形成；产生10．according_to 按照；根据……所说11．so_that 以至于；结果12．do_harm_to 损害；伤害；对……有害热点句型1．as 引导方式状语从句It shows the importance of wildlife protection, but I'd like to help as_the_WWF_suggests (按照世界野生生物基金会的建议)．(教材P26) 2．be to do 表示将来的打算。
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《控制与设计》强化训练
广东版 制作 王爱军
1
【复习目标】
• 1、深入理解控制的含义，能够区分手动控 制与自动控制以及开环控制与闭环控制 • 2、掌握开环控制与闭环控制方框图的绘制 • 3、理解控制系统中各量的具体作用和含义 • 4、会绘制简单的控制系统框图
2
【重难点】
• 开环控制与闭环控制的区分 • 控制系统框图的绘制
门的开、关
输入量
声音传感 控制器
电动机
门
输出量
“芝麻开门”声控开门系统的控制方框图
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区别：有无反馈
开环控制系统方框图
控制量
给定值
（输入量）
控制器
执行器
被控对象
被控量
（输出量）
闭环控制系统的方框图
（输入量）
﹢ 给定量
比较器
控制量
（输出量）
控制器
执行器
被控制对象
被控量
﹣
检测装置
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问题4:在电冰箱的温度控控制系统中，下列情况不属 于影响其温度控制的干扰因素是 A、频繁开关电冰箱门 拿取食物 B、电冰箱所在房间的温度骤变 C、将热菜或热饭放入电冰箱中 D、在电冰箱外放一盆冷水
（5）画出该控制系统方框图。
设定水位 + 输入 —
连杆机构
进水 阀门 量 水箱
实际水位 输出
浮球
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2、太阳能是二十一世纪最有开发前景的新能源，下图是太阳 能热水器的设计草图，请回答下列问题。 （1）下图中的阀门1不能省略，原因是 阀门的作用是控制自来水给太阳能热水器注水。省略后，自 来水会持续给太阳能注水，造成水资源的浪费。当注满水后， 关掉阀门还可以防止太阳能水倒流。故不能省略。 （2）淋浴时，使用者可以通过手动流量冷热双控开关调控水温， 开环 此供水系统属于 控制系统（填“开环”或“闭环”）。 14
5
区别：是否是在人的直接干预下完成 的控制任务
人工（手动）控制：控制系统必须在人
的直接干预下才能完成控制任务
自动控制：在控制的过程中不需要人的干
预，（但可能有人的参与。）就可按期望 规律或预定程序进行的控制系统。
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问题3：下列控制属于开环控制还是闭环控制 A红外线感应自动门 B电饭锅温控系统 C现代化农业温室的温度控制 D自动声控灯
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(1)该控制系统是开环控制系统还是闭环控制系统？ 闭环控制 (2)该控制系统的被控对象和输出量分别是什么？ 水箱 实际水位 (3)该控制系统中浮球起什么作用？ 浮球作为这个控制系统的检测装置，测量出水箱的实际水位高度，通过 连杆机构的传递，求出与给定水位的差值，从而使系统控制进水阀门的 开和关，起反馈的作用 （4）想使家用抽水马桶节约用水，减少水箱每次冲水量，如图所示下列方案 最不适合（ C ） • A．在水箱中放置1块砖头，以减少水箱的实际蓄水量 • B．设计两种冲水方式，半箱冲洗与整箱冲洗 • C．往进水阀方向调节浮球，缩短连杆长度 • D．控制出水阀开启时间，使其在水未放完之前关闭。 12
开环控制：系统的输出量对系统的控制没有影响的 控制系统。 （无反馈） 闭环控制：系统的输出量返回到输入端并对控制过 程产生影响的控制系统。 （有反馈）
导弹发射，是闭环控制系统。导弹控制系统会根据对 目标的偏差纠正偏差以力争命中目标。 大炮发射，是开环控制系统。开炮前瞄准控制，炮弹 一旦出了膛就不能调整。 7
问题5：闭环控制系统中的反馈是指 A由输入端到输出端的全过程 B被控量和输出量的比较过程 C对输入信号（偏差值）进行运算处理，并发出控制命 令的过程 D将输出量通过检测装置，返回到输入并与输入量进行 9 比较，从而减少输出量的偏差，稳定输出量。
• 在控制系统中，除输入量（给定量）以外，引起 被控量变化的各种因素称为干扰因素 • 引起原因：人为 环境 克服干扰的基本方法: 1、消除干扰 2、减弱干扰3、提高控制系统性能 • 反馈：在控制系统中，将输出量通过适当的检测 装置返回到输入端并与输入量进行比较的过程
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参考答案
题号 答案 题号 答案 1 B 2 C 3 D 4 A 5 D 6 A 7 D 8 C
9 B
10 D
11 A
12 C
13 C
14 C
15 B
16 B
【合作探究题目】 1、如图所示是抽水马桶水箱自动控制系统。当水箱出水时， 水位下降，浮球下沉，打开水阀，此时水箱进行补水，直到水 箱的水位上升到给定水位，浮球上升，进水阀关闭。请回答以 下问题：
【补充：课后练习】
《阿里巴巴与四十大盗的故事》我们耳熟能详。请 你设计一个现实版的阿里巴巴与四十大盗中的“芝 请写出“芝麻开门”声控开门系统的控制方框图，有兴趣的 麻开门”声控门。分析输入、输出、控制器、执行 同学课后可以制作模型，把神话变成现实。 器、被控对象等各量。绘制出控制系统的方框图。
声音： “芝麻芝麻， 开门吧” 可以识别、 记忆 的芯片
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【自主学习】
• 用5~8分钟时间回顾本章知识要点。着重解决 以下几个问题： • ⑴明确具体控制现象中的控制对象、控制目 的以及控制手段 • ⑵手动（人工）控制与自动控制的主要区别 • ⑶开环控制与闭环控制的主要区别和判断 • （4）控制系统中的反馈与干扰
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自主学习检测
问题1：请回答水龙头水流控制现象中，控制对 象、控制目的和控制手段分别是什么？ 问题2指出下列控制是人工控制还是自动控制