高三寒假作业(2)参考答案

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高三语文寒假作业：(二)(Word版含答案)

高三语文寒假作业（二）一、基础知识1.下列各组词语中，加点字的读音全都正确的一组是（）A．旌．（jīng）幡参．（shēn）商斐．（fěi）然成章晕头转．（zhuǎn）向B．桂棹．（zhào）漩．（xuàn）涡光风霁．（jì）月度长絜．（xié）大C．牛腩．（nán）谣诼．（zhuó）命途多舛．（chuǎn）剑拔弩．（nǔ）张D．芒种．（zhòng）鬈．（quán）发懵．（měng）懂无知载．（zài）笑载言2.下列各句中，加点的成语运用正确的一项是（）A．在强手如林的国际竞争舞台上，深圳市代表团全体成员通力合作，长袖善舞，终于使深圳市获得了世界大学生夏季运动会的主办权。

B．上海市政协委员钱程为青少年对方言的驾驭能力每况愈下忧心忡忡．．．．，并在上海两会上提出强化对学龄前儿童的沪语教育的提案。

C．在第三轮客战广东队受伤后，拉杜已经缺席了四场比赛，整整休息了10天，不光是球迷等得焦急，连他自己都刻不容缓．．．．要上场了。

D．从清末太爷爷到爷爷、父亲，再到自己，陈家四代人部是远近闻名的木版年画艺人；昨日，86岁的陈义文老人回首自己一生的蹉跎岁月．．．．，感慨万千。

3.依次填人下面一段文字横线处的语句，衔接最恰当的一组是（）英国医生普劳特首先指出有机食物可以分为三类物质，后分别称为糖类、脂肪和蛋白质。

，，。

由于蛋白质在环境中是比较稀少的，所以全用蛋白质做膳食以维持生活就很浪费，犹如木柴随手可得却用家具烧炉子一样。

①他们发现，蛋白质是最基本而必不可少的②只要有蛋白质供应，机体便能存活③19世纪的化学家和生物学家，逐渐研究清楚这些食物的营养性能④然而从蛋白质所提供的物质却能制造出必需的糖类和脂肪⑤身体不能从糖类和脂肪制造蛋白质⑥因为糖类和脂肪中没有氮A．⑤①⑥④③②B．③①②⑤⑥④C．③④⑤⑥①②D．⑤③①④②⑥4.下列有关文学常识和名著阅读的表述，有错误的一项是（）A. 《诗经》是我国第一部诗歌总集，也是我国诗歌最早的、最重要的一个源头，汉代以后被尊为儒家经典。

【名师原创全国通用】2014-2015学年高三寒假作业化学(二) Word版含答案

【原创】高三化学寒假作业（二）一．选择题（共7小题，每个小题只有一个正确选项）聚丙烯的结构简式：和互为同位素过氧化氢电子式：5．北京大学和中国科学院的化学工作者已成功研制出碱金属与C60形成的球碳盐K3C60，实6．Li﹣Al/FeS电池是一种正在开发的车载电池，该电池中正极的电极反应式为：2Li++FeS+2e ﹣1818二．填空题（共3小题）8．空气吹出法工艺，是目前“海水提溴”的最主要方法之一．其工艺流程如下：（1）溴在周期表中位于_________周期_________族．（2）步骤①中用硫酸酸化可提高Cl2的利用率，理由是_________．（3）步骤④利用了SO2的还原性，反应的离子方程式为_________．（4）步骤⑥的蒸馏过程中，温度应控制在80﹣90℃．温度过高或过低都不利于生产，请解释原因：_________．（5）步骤⑧中溴蒸气冷凝后得到液溴与溴水的混合物，可利用它们的相对密度相差很大的特点进行分离．分离仪器的名称是_________．（6）步骤①、②之后并未直接用“含Br2的海水”进行蒸馏得到液溴，而是经过“空气吹出”、“SO2吸收”、“氯化”后再蒸馏，这样操作的意义是_________．9．“酒是陈的香”，就是因为酒在储存过程中生成了有香味的乙酸乙酯，在实验室我们也可以用如右图所示的装置制取乙酸乙酯．回答下列问题：（1）写出制取乙酸乙酯的化学反应方程式_________（2）饱和碳酸钠溶液的主要作用是_________、_________、_________．（3）装置中通蒸气的导管要插在饱和碳酸钠溶液的液面上，不能插入溶液中，目的是_________．（4）若要把制得的乙酸乙酯分离出来，应采用的实验操作是_________．（5）做此实验时，有时还向盛乙酸和乙醇的试管里加入几块碎瓷片，其目的是_________．10．某研究性学习小组设计了一组实验验证元素周期律．Ⅰ：甲同学在a、b、c三只烧杯里分别加入50mL水，再分别滴加几滴酚酞溶液，依次加入大小相近的锂、钠、钾块，观察现象．甲同学设计实验的目的是_________，反应最剧烈的烧杯是_________（填a、b、c）．Ⅱ：乙同学设计实验验证非金属元素的非金属性越强，对应的最高价含氧酸的酸性就越强．他设计了如图装置以验证氮、碳、硅元素的非金属性强弱．乙同学设计的实验可直接证明三种酸的酸性强弱，已知A是强酸，常温下可与铜反应；B是块状固体；打开分液漏斗的活塞后，C中可观察到白色沉淀生成．（1）写出所选用物质的化学式：A：_________；B：_________；C：_________．（2）写出烧杯中发生反应的离子方程式：_________．参考答案一选择题。

高三年级语文寒假作业答案

高三年级语文寒假作业答案（实用版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

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首发吉林省高三寒假作业数学2含答案

高三数学寒假作业（函数与导数）本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，共22小题，共150分，考试时间120分钟，考生作答时将答案答在答题卡上，在本试卷上答题无效。

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，只有一项符合题目要求。

） 1.)()()(0000limx f xx f x x f x '=∆-∆+→∆，其中x ∆（）（A ）恒取正值或恒取负值（B ）有时可以取0（C ）恒取正值（D ）可以取正值和负值，但不能取02.设函数()y f x =在(0，+∞)内有定义，对于给定的正数K ，定义函数(),()(),()K f x f x K f x K f x K≤⎧=⎨>⎩，取函数ln 1()xx f x e +=，恒有()()K f x f x =，则 A ．K 的最大值为1e B ．K 的最小值为1eC ．K 的最大值为2D ．K 的最小值为23.双曲线221y x m-=的离心率大于2的充分必要条件是（）A ．12m > B ．1m ≥ C ．1m > D ．2m >4.函数32()f x x bx cx d =+++的大致图象如图所示，则2212x x +等于（）（A ）89（B ）109（C ）169（D ）2895.“使lg 1m <”成立的一个充分不必要条件是（）A. 0m >B. {}1,2m ∈C. 010m <<D. 1m <6.已知a ，b ，c ，d 为实数，且c>d ，则“a>b ”是“a+c>b +d”的 A ．充分而不必要条件 B ．必要而不充分条件 C ．充要条件 D ．既不充分也不必要条件7.已知复数z =,则“3πθ=”是“z 是纯虚数”的（）A ．充要条件B ．必要不充分条件C ．充分不必要条件D ．既不充分也不必要条件8.对12,(0,)2x x π∀∈，若21x x >，且1111sin x y x +=，2221sin x y x +=，则( ) （A ）y 1＝y 2 （B ）y 1>y 2（C ）y 1<y 2 （D ）y 1，y 2的大小关系不能确定9.已知复数i i z 1)3(tan --=θ,则“3πθ=”是“z 是纯虚数”的（）A.充要条件B.必要不充分条件C.充分不必要条件D.既不充分也不必要条件10.设函数()f x 为偶函数，且当0x ≥时，()14xf x ⎛⎫= ⎪⎝⎭，又函数()sin g x x x π=，则函数()()()h x f x g x =-在1,22⎡⎤-⎢⎥⎣⎦上的零点的个数为( )个。

答案高三语文寒假作业2

高三语文寒假作业2一、读一读1、记得海德格尔曾说过，生命充满了劳绩，但还诗意地栖居于这块土地上。

要感谢海德格尔，这位精神的探索者，为我的心里留下了一隅空白。

让我在心烦意乱之际，能够冷静地思考，吟上一句“人生天地间，若白驹过隙，忽然而已”；让我在忙碌中，能够偷得浮生半日闲，欣赏一段“他年傍得蟾宫客，不在梅边在柳边”的还魂爱情。

如五柳先生，“怀良辰以孤往，或植杖而耘籽”；如东坡先生，“颂明月之诗，歌窈窕之章”；如守着瓦尔登湖的梭罗，如遥望乞力马扎罗之雪的海明威。

他们都是诗人，在属于自己的空白天地中，诗意地栖居。

(《月圆是画，月缺是诗》)2、风雨过后，眼前会是鸥翔鱼游的天水一色；走出荆棘，前面就是铺满鲜花的康庄大道；登上山顶，脚下便是积翠如云的空蒙山色。

在这个世界上，一星陨落，黯淡不了星空灿烂，一花凋零，荒芜不了整个春天。

人生要尽全力度过每一关，不管遇到什么困难不可轻言放弃。

二、语言文字运用（20分）1、下列各句中，加点的成语使用恰当的一项是（3分）( )A．俗话说得好：知错就改不算错，犯而不校．．．．错中错。

我是你的朋友，你做错了事可以对我说，让藏在心灵深处的心事，也出来晒晒太阳。

B．大冬会上，伴随着《长江》悠扬的旋律，张丹、张昊在冰场上近乎完美地完成了三周抛跳、捻转三周等动作。

场外的观众们则作壁上观．．．．，大声为他们加油。

C．工程已接近尾声，指挥部要求大家牢记“行百里者半九十．．．．．．．”的古训，再接再厉，为这项国家重点工程画上一个圆满的句号。

D．在这次世乒赛男子团体比赛中，我方教练斟酌再三，布出奇兵，大胆启用新人，出奇．．制胜．．了老对手瑞典队。

2、下列各句中，没有语病的一句是（3分）( )A．当许多人还在对我国2009年1300多万辆的汽车销售量津津乐道时，2010年前11个月，中国的汽车销售量已经达到了1639万辆，成为全球最大的汽车市场。

B．由于各方面的因素，包括自然灾害比较多，需求比较旺盛，美元贬值，影响到国际市场的石油、农产品、粮食、棉花等价格上涨。

高三数学寒假作业(2)及答案

有一项是符合题目要求的）1.已知集合(){}|30M x x x =-<，{}|2N x x =<，则MN =( )A ．()0,2-B ．()2,0C ．()3,2D ．()3,2- 2．已知命题2:,210,p x R x ∀∈+>则（） A ．2:,210p x R x ⌝∃∈+≤ B ．2:,210p x R x ⌝∀∈+≤ C ．2:,210p x R x ⌝∃∈+<D ．2:,210p x R x ⌝∀∈+<3．向量a =（1，-2），b =（6，3），则a 与b 的夹角为( ) A ．60︒ B ．90︒ C ．120︒ D ．150︒ 4．在△ABC 中，角A 、B 、C 的对边分别为a 、b 、c , 已知A =3π, a =3, b =1，则c = ( )A ．1B ．2C ．3—1D ．3 5．已知两条直线,m n ，两个平面,αβ，给出下面四个命题： ①//,m n m n αα⊥⇒⊥ ②//,,//m n m n αβαβ⊂⊂⇒ ③//,////m n m n αα⇒ ④//,//,m n m n αβαβ⊥⇒⊥其中正确命题的序号是( ) A ．①③ B ．②④ C ．①④ D ．②③6.函数)sin()(ϕω+=x x f (,0,02)x R ωϕπ∈>≤<的部分图象如图，则（）A ．ω＝2π，ϕ＝4πB ．ω＝3π,ϕ＝6πC ．ω＝4π,ϕ＝4πD ．ω＝4π,ϕ＝45π131oy x7.三个学校分别有1名、2名、3 名学生获奖，这6名学生排成一排合影，要求同校的任两名学生不能相邻，那么不同的排法有( ) A ．36种B ．72种C ．108种D ．120种8．如图，设点P 为△ABC 内一点，且AP →= 25 AB → + 15AC → ，则△ABP 的面积与△ABC 的面积之比是（） A ．2：5 B . 1：5C . 1：4D . 1：39.已知{(,)|6,0,0}x y x y x y Ω=+≤≥≥，{(,)|4,0,20}A x y x y x y =≤≥-≥，若向区域Ω上随机投一点P ，则点P 落入区域A 的概率为( ) A ．31 B ．32 C ．91 D ．92 10.已知双曲线12222=-y ax 的一条准线与抛物线x y 42-=的准线重合，则该双曲线的离心率为（） A.22B.2C.2D.21二、填空题：本大题共7个小题，把答案填在题中横线上.11.若a =)1,8(-，b =)4,3(，则a 在b 方向上的投影是 ; 12．复数ii++12的共轭复数是 . 13.已知x 、y 满足y x z k y x x y x 420,305+=⎪⎩⎪⎨⎧≥++≤≥+-且的最小值为－6，则常数k= . 14．若)2,0(,135)4sin(πααπ∈=-且，则)4cos(2cos αα+值为 .15．如图，函数)(x f y =的图象在点P 处的切线方程是8+-=x y ，则)5()5(f f '+= .16．若1)2(33)(23++++=x a ax x x f 有极大值和极小值，则a 的取值范围是____________17．下列程序执行后输出的结果是 . i =11 s=1 DO s=s* i i = i －1 LOOP UNTIL i <9 PRINTs END三、解答题：本大题共4小题，解答应写出文字说明、证明过程或推演步骤.18.已知函数f(x)=2cosx(sinx-cosx)+1，x ∈R. (1)求函数f(x)的最小正周期T ； (2)求函数f(x)的单调增区间；(3)求函数f(x)在区间⎥⎦⎤⎢⎣⎡43,8ππ上的最小值和最大值.19．已知函数)1(log )()()1(>==+a x f x g y x a与的图象关于原点对称.（1）写出)(x g y =的解析式；（2）若函数m x g x f x F ++=)()()(为奇函数，试确定实数m 的值；（3）当)1,0[∈x 时，总有n x g x f ≥+)()(成立，求实数n 的取值范围.21.如图，在正方体1111D C B A ABCD -中，E 、F 分别是BB 1的中点．（１）证明F D AD 1⊥；（２）求AE 与F D 1所成的角；（３）证明：面⊥AED 面11FD AA 1寒假作业3答案一、选择题1-5 BABBC 6-10 CDBDB二、填空题11.-4 12.2123+i 13.0 14．132415．211 16.12-<>a a 或 17.990 三、解答题18(1)T=π (2))(83,8Z k k k ∈⎥⎦⎤⎢⎣⎡++-ππππ(3)最小值-1…，最大值2…19．解：（1）设M （x ，y ）是函数)(x g y =图象上任意一点，则M （x ，y ）关于原点的对称点为N （－x ，－y ）N 在函数)1(log )(+=x x f a 的图象上，)1(log +-=-∴x y a)1(log x y a --=∴ （2）m x F x ax a+-=-+)1()1(log log )( 为奇函数.mm x F x F x ax ax ax a-+-=+-∴-=-∴-++-)1()1()1()1(log log log log )()(00log log log 211111=∴==+=∴+--+m m a xx a xxa（3）由n n x g x f xx a ≥≥+-+11log ,)()(得设)1,0[,11log )(∈-+=x x xa x Q ，即可只要由题意知n ≥min Q(x),,)121(log )(xax F -+-= 在[0，1)上是增函数.0)0()(min ==∴Q x Q 即0≤n 即为所求.20.解：(I)将事件“第一次、第三次均抽到白球”记作A ，则P (A ) = 16 ⨯16 =136A1(II)设 ξ 是三次抽取中抽到白球的次数，则 ξ~ B (3,16 )ξ 的分布列为E ξ = 3·P (A ) = 3·16 = 1221.（1）证明：因为AC 1是正方体，所以AD ⊥面DC 1。

2021年高三数学寒假作业2含答案

2021年高三数学寒假作业2含答案一、选择题.1.已知函数 f (x)是定义在 R 上的奇函数，且当x＞ 0时， f (x) ＝2x－ 3,则f (－2) =（）A．1 B．—1 C．D．－2.函数y=ln的图象大致为( )A．B．C．D．3.若函数是R上的单调减函数，则实数a的取值范围是( )A．（﹣∞，2） B．C．（0，2）D．4.已知f（x）为R上的减函数，则满足的实数x的取值范围是( )A．（﹣∞，1）B．（1，+∞）C．（﹣∞，0）∪（0，1） D．（﹣∞，0）∪（1，+∞）5.如果，那么( )A．y＜x＜1 B．x＜y＜1 C．1＜y＜x D．1＜x＜y6.下列函数中，在区间（0，+∞）上为增函数的是( )A．y= B．y=（x﹣1）2C．y=2﹣x D．y=log0.5（x+1）7.已知等差数列{a n}的前n项和为S n，若a4=18﹣a5，则S8=( )A．18 B．36 C．54 D．728.已知某几何体的三视图，则该几何体的体积是( )A．12 B．24 C．36 D．489.若点P是曲线y=x2﹣lnx上任意一点，则点P到直线y=x﹣2的最小距离为( )A． B．1 C． D．210.已知F1、F2是双曲线=1（a＞0，b＞0）的左、右焦点，若双曲线左支上存在一点P与点F2关于直线y=对称，则该双曲线的离心率为( )A． B． C． D．2二．填空题.11.已知是实数，若集合｛｝是任何集合的子集，则的值是▲。

12.△ABC中，∠B=120°，AC=7，AB=5，则△ABC的面积为．13.向量，在正方形网格中的位置如图所示，设向量=﹣λ，若⊥，则实数λ=．14.若不等式对于任意正实数x、y成立，则k的取值范围为．三、解答题.15.已知定义域为R的函数f（x）=是奇函数．（Ⅰ）求b的值；（Ⅱ）判断函数f（x）的单调性；（Ⅲ）若对任意的t∈R，不等式f（t2﹣2t）+f（2t2﹣k）＜0恒成立，求k的取值范围．16.如图，在各棱长均相等的三棱柱ABC﹣A1B1C1中，∠A1AC=60°，D为AC的中点．（1）求证：B1C∥平面A1BD；（2）求证：平面ABB1A1⊥平面AB1C．17.已知函数f（x）=x3+ax2﹣x+c，且a=f′（）．（1）求a的值；（2）求函数f（x）的单调区间；（3）设函数g（x）=[f（x）﹣x3]•e x，若函数g（x）在x∈[﹣3，2]上单调递增，求实数c的取值范围．【】新课标xx年高三数学寒假作业2参考答案1.B2.A【考点】函数的图象．【专题】函数的性质及应用．【分析】根据复合函数的单调性可知函数f（x）在（﹣∞，）为增函数，在（，+∞）为减函数，问题得以解决【解答】解：设t==，当x＞时，函数t为减函数，当x＜时，函数t为增函数，因为y=lnt为增函数，故函数f（x）在（﹣∞，）为增函数，在（，+∞）为减函数，故选：A【点评】本题考查了函数图象的识别，根据函数的单调性是常用的方法，关键是判断复合函数的单调性，属于基础题．3.B【考点】函数单调性的性质；指数函数的单调性与特殊点．【专题】计算题．【分析】由函数是单调减函数，则有a﹣2＜0，且注意2（a﹣2）≤．【解答】解：∵函数是R上的单调减函数，∴∴故选B【点评】本题主要考查分段函数的单调性问题，要注意不连续的情况．4.D【考点】函数单调性的性质．【分析】由函数的单调性可直接得到的大小，转化为解分式不等式，直接求解或特值法均可．【解答】解：由已知得解得x＜0或x＞1，故选D．【点评】本题考查利用函数的单调性解不等式，属基本题．5.C【考点】指、对数不等式的解法．【专题】转化思想；数形结合法；不等式的解法及应用．【分析】由对数的运算性质可化原不等式为log2x＞log2y＞log21，由对数函数的单调性可得．【解答】解：原不等可化为﹣log2x＜﹣log2y＜0，即log2x＞log2y＞0，可得log2x＞log2y＞log21，由对数函数ylog2x在（0，+∞）单调递增可得x＞y＞1，故选：C．【点评】本题考查指对不等式的解法，涉及对数的运算性质和对数函数的单调性，属基础题．6.A【考点】对数函数的单调性与特殊点．【专题】函数的性质及应用．【分析】根据基本初等函数的单调性，判断各个选项中函数的单调性，从而得出结论．【解答】解：由于函数y=在（﹣1，+∞）上是增函数，故满足条件，由于函数y=（x﹣1）2在（0，1）上是减函数，故不满足条件，由于函数y=2﹣x在（0，+∞）上是减函数，故不满足条件，由于函数y=log0.5（x+1）在（﹣1，+∞）上是减函数，故不满足条件，故选：A．【点评】本题主要考查函数的单调性的定义和判断，基本初等函数的单调性，属于基础题．7.D【考点】等差数列的前n项和．【专题】等差数列与等比数列．【分析】由等差数列的性质可得a1+a8=a4+a5=18，代入求和公式可得．【解答】解：由题意可得a4+a5=18，由等差数列的性质可得a1+a8=a4+a5=18，∴S8===72故选：D【点评】本题考查等差数列的性质和求和公式，属基础题．8.A【考点】由三视图求面积、体积．【专题】计算题；空间位置关系与距离．【分析】利用三视图判断几何体的形状，通过三视图是数据，求出几何体的体积即可．【解答】解：三视图复原的几何体是底面为边长4、3的矩形，高为3的棱锥，高所在棱垂直底面矩形的一个得到，所以棱锥的体积为：=12．故选：A．【点评】本题主要考查关于“几何体的三视图”与“几何体的直观图”的相互转化的掌握情况，同时考查空间想象能力．9.C【考点】点到直线的距离公式．【专题】转化思想；导数的综合应用．【分析】由题意知，当曲线上过点P的切线和直线y=x﹣2平行时，点P到直线y=x﹣2的距离最小．求出曲线对应的函数的导数，令导数值等于1，可得切点的坐标，此切点到直线y=x﹣2的距离即为所求．【解答】解：点P是曲线y=x2﹣lnx上任意一点，当过点P的切线和直线y=x﹣2平行时，点P到直线y=x﹣2的距离最小．直线y=x﹣2的斜率等于1，令y=x2﹣lnx，得y′=2x﹣=1，解得x=1，或x=﹣（舍去），故曲线y=x2﹣lnx上和直线y=x﹣2平行的切线经过的切点坐标为（1，1），点（1，1）到直线y=x﹣2的距离等于，∴点P到直线y=x﹣2的最小距离为，故选：C．【点评】本题考查点到直线的距离公式的应用，函数的导数的求法及导数的意义，体现了转化的数学思想方法，是中档题．10.B【考点】双曲线的简单性质．【专题】计算题；圆锥曲线的定义、性质与方程．【分析】求出过焦点F2且垂直渐近线的直线方程，联立渐近线方程，解方程组可得对称中心的点的坐标，代入方程结合a2+b2=c2，解出e即得．【解答】解：过焦点F2且垂直渐近线的直线方程为：y﹣0=﹣（x﹣c），联立渐近线方程y=与y﹣0=﹣（x﹣c），解之可得x=，y=故对称中心的点坐标为（，），由中点坐标公式可得对称点的坐标为（﹣c，），将其代入双曲线的方程可得，结合a2+b2=c2，化简可得c2=5a2，故可得e==．故选：B．【点评】本题考查双曲线的简单性质，涉及离心率的求解和对称问题，属中档题．11.略12.【考点】正弦定理的应用；余弦定理．【专题】解三角形．【分析】先利用余弦定理和已知条件求得BC，进而利用三角形面积公式求得答案．【解答】解：由余弦定理可知cosB==﹣，求得BC=﹣8或3（舍负）∴△ABC的面积为•AB•BC•sinB=×5×3×=故答案为：【点评】本题主要考查了正弦定理和余弦定理的应用．在求三角形面积过程中，利用两边和夹角来求解是常用的方法．13.【考点】平面向量数量积的运算．【专题】计算题；平面向量及应用．【分析】由向量垂直的条件得到（﹣λ）•=0，求出向量AB，AC的坐标和模，再由数量积的坐标公式，即可求出实数λ的值．【解答】解：∵向量=﹣λ，⊥，∴=0，即（﹣λ）•=0，∴=λ∵，，∴=6，||=2，∴λ=．故答案为：．【点评】本题考查向量的数量积的坐标表示、向量垂直的条件、向量的模，考查基本的运算能力，是一道基础题．14.【考点】函数最值的应用．【专题】计算题；压轴题．【分析】将不等式转化为k2≥．只要求得最大值即可．【解答】解：显然k＞0，故k2≥．令t=＞0，则k2≥令u=4t+1＞1，则t=．可转化为：s（u）=，于是，≤（1+2）=．∴k2≥，即k≥时，不等式恒成立（当x=4y＞0时等号成立）．故答案为：【点评】本题考查将不等式的恒成立问题转化为求函数最值问题，求最值时一般是转化为基本函数解决，或用基本不等式，或用导数求解．15.【考点】函数恒成立问题；函数奇偶性的性质；二次函数的性质；利用导数研究函数的单调性．【专题】计算题．【分析】（Ⅰ）利用奇函数定义f（x）=﹣f（x）中的特殊值f（0）=0求b的值；（Ⅱ）设x1＜x2然后确定f（x1）﹣f（x2）的符号，根据单调函数的定义得到函数f（x）的单调性；（III）结合单调性和奇函数的性质把不等式f（t2﹣2t）+f（2t2﹣k）＜0转化为关于t的一元二次不等式，最后由一元二次不等式知识求出k的取值范围．【解答】解：（Ⅰ）因为f（x）是奇函数，所以f（0）=0，即⇒b=1，∴．（Ⅱ）由（Ⅰ）知，设x1＜x2则f（x1）﹣f（x2）=﹣=因为函数y=2x在R上是增函数且x1＜x2∴f（x1）﹣f（x2）=＞0即f（x1）＞f（x2）∴f（x）在（﹣∞，+∞）上为减函数（III）f（x）在（﹣∞，+∞）上为减函数，又因为f（x）是奇函数，所以f（t2﹣2t）+f（2t2﹣k）＜0等价于f（t2﹣2t）＜﹣f（2t2﹣k）=f（k﹣2t2），因为f（x）为减函数，由上式可得：t2﹣2t＞k﹣2t2．即对一切t∈R有：3t2﹣2t﹣k＞0，从而判别式．所以k的取值范围是k＜﹣．【点评】本题主要考查函数奇偶性与单调性的综合应用；同时考查一元二次不等式恒成立问题的解决策略，是一道综合题．16.【考点】平面与平面垂直的判定；直线与平面平行的判定．【专题】转化思想；综合法；空间位置关系与距离．【分析】（1）连接AB1和A1B，交于E，连接DE，运用中位线定理和线面平行的判定定理，即可得证；（2）运用菱形的对角线垂直和线面垂直的判断和性质，可得A1B⊥平面AB1C，再由面面垂直的判定定理，即可得证．【解答】证明：（1）连接AB1和A1B，交于E，连接DE，由D，E分别为AC，A1B的中点，可得DE∥B1C，由DE⊂平面A1BD，B1C⊄平面A1BD，即有B1C∥平面A1BD；（2）由菱形ABB1A1，可得AB1⊥A1B，∠A1AC=60°，D为AC的中点，可得A1D⊥AC，又BD⊥AC，则AC⊥平面A1BD，即有AC⊥A1B，又AB1⊥A1B，则A1B⊥平面AB1C，而A1B⊂平面ABB1A1，则平面ABB1A1⊥平面AB1C．【点评】本题考查线面平行和面面垂直的判定，注意运用线面平行和面面垂直的判定定理，考查空间线面位置关系的转化，属于中档题．17.【考点】利用导数研究函数的单调性；导数的运算．【专题】导数的综合应用．【分析】（1）先求出函数的导数，得到f′（）=3×+2f′（）×﹣1，解出即可；（2）先求出函数的导数，解关于导函数的方程，从而得到函数的单调区间；（3）问题等价于h（x）=﹣x2﹣3x+c﹣1≥0在x∈[﹣3，2]上恒成立，只要h（2）≥0，解出即可．【解答】解：（1）f′（x）=3x2+2ax﹣1，当x=时，得a=f′（）=3×+2f′（）×﹣1，解之，得a=﹣1．（2）∵f（x）=x3﹣x2﹣x+c，∴f′（x）=3（x+）（x﹣1），列表如下：﹣（﹣，1） 1 （1，+∞）x （﹣∞，﹣）f′（x）+ 0 ﹣0 +f（x）↗有极大值↘有极小值↗所以f（x）的单调递增区间是（﹣∞，﹣）和（1，+∞）；f（x）的单调递减区间是（﹣，1）．（3）函数g（x）=（﹣x2﹣x+c）e x，有g′（x）=（﹣x2﹣3x+c﹣1）e x，因为函数在区间x∈[﹣3，2]上单调递增，等价于h（x）=﹣x2﹣3x+c﹣1≥0在x∈[﹣3，2]上恒成立，只要h（2）≥0，解得c≥11，所以c的取值范围是：c≥11．【点评】本题考查了函数的单调性问题，考查导数的应用，函数恒成立问题，是一道中档题．B27707 6C3B 氻 [23858 5D32 崲sn * 31895 7C97 粗27345 6AD1 櫑26899 6913 椓j22965 59B5 妵精品文档实用文档。

江苏省兴化市2020届高三语文上学期寒假作业(二)新人教版

高三年级语文学科寒假作业（二）2020年1月19日（作业用时：60分钟）一、语言文字运用1.下列词语中，字形和加点的字读音全都正确的一项是（）A. 活性炭韬光养晦冗．（rǒng）长唾．(chuí)手可得B. 谐奏曲咄咄逼人怆．(chuàng)然怙恶不悛．(qǔn)C. 威慑力暇不掩瑜攫．(jué)取恪(kè)尽职守D. 笑眯眯按图索骥荒谬．(miù) 返璞．(pú)归真2.下列句子中，加点的成语使用正确的一项是（）A. 伴着落日的余晖，诗人缓步登上了江边的这座历史名楼，极目远眺，晓霞尽染，鸿雁南飞，江河日下．．．．，诗意油然而生。

B. 下午，今年的第一场春雨不期而遇．．．．，虽然没有电视台预报的降水量大，但还是让京城一直干燥的空气变得湿润了一些。

C. 这位明星曾带给观众很多快乐，不少“粉丝”竞相模仿他的表演，但这次他因醉酒驾车而触犯法律的行为却不足为训．．．．。

D. 由于日本福岛因地震发生核泄漏，一时间“服用碘盐可以防辐射”的传言不绝如缕．．．．，造成我国许多地方出现排队抢购碘盐的怪现象。

3．下列各句中，没有语病．．．．的一项是（）A．中华全国总工会紧急拨款100万元，用于在黑龙江省鹤岗新兴煤矿爆炸事故中遇难矿工家属的慰问。

B．人才培养的质量是衡量一所大学办得好不好的重要因素，大力提高人才培养水平是高等教育改革发展的战略课题。

C．这个垃圾处理厂原设计日处理垃圾1000吨，现在，平均日处理垃圾达到了2300吨，早就处于超负荷运转了。

D．在宣泰战斗中，我军歼灭国民党军两个团，生俘团长一名，缴获了大批枪支弹药和武器物资。

4．下列各组词语中，没有错别字的一组是（）A．厉行节约再接再厉变本加厉励精图治B．无事生非循规蹈矩事必躬亲委屈求全C．炫赫一时明火执仗拾人牙慧不肖子孙D．颐指气使遗人笑柄得不偿失浮想联翩5．下面是英国学者里基-特里维尔关于“战略环境评价”的经典性定义，请提取反映其主要信息的三个重要词语。

高三语文寒假作业(2)附答案

高三语文寒假作业（2）附答案班级姓名完成时间家长签字一、选择题1．下列词语中加点的字的读音完全相同的一组是（）A．晋升、灰烬、觐见、进退两难、噤若寒蝉B．闪烁、硕大、回溯、媒妁之言、数见不鲜C．邂逅、亵渎、狡黠、不屑一顾、歌台舞榭D．罪孽、啮齿、涅磐、劣迹昭彰、蹑手蹑脚【答案】A【解析】A项都读jìn；B项中“烁”“硕”“妁”“数”都读shuò，“溯”读sù；C项中“黠”读“xiá”，其余都读“xiè”；D项中“劣”读“liè”，其余读niè2、下列各句中，加点的成语使用恰当的一句是（）A．从纯粹制度理性来看，公车改革不应留漏洞，不能给既得利益者钻空子。

问题是，绝对完善的制度从来不是一挥而就的。

B．目前很多电视台明年的剧排都已经排满，如何‘消化’协调这些广告，寻找一种利益平衡是电视台目前的当务之急。

C、在捷克布拉格举行的国际天文学联合会第26届大会上，2500多名科学家决定将太阳系第九大行星冥王星逐出行星行列。

天文学界多年的争论至此尘埃落定，太阳系只剩下八大行星。

D．为了推销产品，商家打起了“绿色生活”、“环保电视”的注意。

专家提醒，环保电视市场鱼龙混杂，购买时须认清“中国环境标志”。

答案C解析：A．应为“一蹴而就”； B “当务之急”与“目前”相重复；D“鱼龙混杂”应为“鱼目混珠”二、阅读下面两则材料，回答问题。

材料一：随着2010年世博会临近，上海市政府开展了劝阻市民穿睡衣出门的活动。

有些居委会甚至还组织了劝导队，佩戴红绸带，衣着整齐地立在小区门口，看到有穿睡衣的居民出门，便上前劝阻。

材料二：对于上海市政府劝阻市民穿睡衣出门的做法，上海热线网(www.online )展开了调查，结果显示：认为穿睡衣出门是“素质低，不文明的表现”的占42．03％，认为这“很正常，只是图个方便”的占33．95％，而选择“很正常，看不惯就不要看”的也有24．02％。

2018年对口高三寒假作业(二)答案

2018年对口高三寒假作业（二）答案《祝福》同步练习一、选择题（12题每题3分）1.选出下列加点字注音全对的一项（）A悚然（sǒng）负疚（jiù）窈陷（yōu）B新正（zhēng）倔强（jiàng）炮烙（laò）C监生（jiàn）歆享（xīn）两颊（jió）D形骸（hǎi）谬种（miù）朱拓（tuò）(答案：C A、“窈”yǎo；B“烙”luò；D“拓”tà)2下列各组书写全都正确的一组是（）A、渣滓唾弃俨然沸反盈天B、寒喧缪种踌蹰相形见绌C、彷徨鬼秘幽微咀嚼赏鉴D、瘦削怨府桌纬绞丝银鐲（答案A B、寒暄谬种C、诡秘D、桌帏）3、下句括号处里依次应填入的词语恰当的一项是（）（）四婶，（）后来雇用的女工，大抵（）懒（）馋，（）馋而且懒，左右不如意，（）也还提起祥林嫂。

A、只有因为或或而且所以B、唯独由于非即或者所以C、只有因为非即或者所以D、只有因为或或甚至所以（答案C）4、下列横线上所填的词语恰当的一项（）①但随后也就自笑，觉得（a.偶尔b.偶然c.间或d.随便）的事，本没有什么深意义，而我偏要细细推敲……②旧历的年底最像年底。

③我在极短期的踌蹰中，想，这里的人照例相信鬼，然而她，却了。

④“我正要问你一件事——”她那没有的眼睛忽然发光了。

A、偶然毕竟疑虑精神B、偶尔毕竟疑惑精采C、偶然究竟疑虑光采D、偶尔究竟疑惑神采（答案B “偶然”是与“必然”相对；“偶然”与“经常”相对；“毕竟”在这里是“到底”的意思，而“究竟”是表示追问；“疑虑”着重在忧虑、担心，而“疑惑”着重在困惑；按搭配关系讲，应该选“精采”）5、“‘可恶！然而是；……。

’四叔说。

”.对鲁四老爷这句中的“可恶”的正确理解是（）A、指卫老婆子不该自己荐他来，又合伙劫她去，大家看了不成样子。

B、指卫老婆子合伙劫走了祥林嫂，给鲁四老爷家添了麻烦，还再上门来做什么？C、指鲁四老爷对祥林嫂被劫走内心愤愤不平，卫老婆子一伙实在可恶。

201 年高三物理寒假作业二 ·牛顿运动定律(答案详解)

201 年高三应届寒假生活·物理学科种瓜得瓜，种豆得豆，种上希望，四个月后，收获喜悦考试范围：牛顿运动定律、牛顿定律的应用；超重和失重一、选择题1. “扳手腕”是中学生课余非常喜爱的一项游戏。

如右图，甲、乙两同学正在进行“扳手腕”游戏，下列关于他们的手之间的力，说法正确的是（）A．甲扳赢了乙，是因为甲手对乙手的作用力大于乙手对甲手的作用力B．只有当甲乙僵持不分胜负时，甲手对乙手的作用力才等于乙手对甲手的作用力C．甲、乙比赛对抗时，无法比较甲手对乙手的作用力和乙手对甲手的作用力的大小关系D．无论谁胜谁负，甲手对乙手的作用力大小等于乙手对甲手的作用力大小2．在一次学校田径运动会上，小明同学以背越式成功地跳过了1.90米的高度，打破校运会记录，如右图。

若忽略空气阻力，g取10m/s2。

则下列说法正确的是（）A．小明下降过程中处于失重状态B．小明起跳以后在上升过程中处于超重状态C．小明起跳时地面对他的支持力大于他的重力D．小明起跳以后在下降过程中重力消失了3．据《新消息》报道，在北塔公园门前，李师傅用牙齿死死咬住长绳的一端，将停放着的一辆卡车缓慢拉动。

小华同学看完表演后做了如下思考，其中正确的是（）A．李师傅选择斜向上拉可以减少车对地面的正压力，从而减少车与地面间的摩擦力B．若将绳系在车顶斜向下拉，要拉动汽车将更容易C．车被拉动的过程中，绳对车的拉力大于车对绳的拉力D．当车由静止被拉动时，绳对车的拉力大于车受到的摩擦阻力4．如右图所示，物块A放在倾斜的木板上，木板的倾角α为30°和45°时物块所受摩擦力的大小恰好相同，则（）A．物块和木板间的动摩擦因数为0.5B．物块和木板间的动摩擦因数为22C．木板的倾角α为45°时物块可能在斜面上做匀速运动D．木板的倾角α为45°时物块的加速等于()2m/s125-5．一皮带传送装置如右图所示，皮带的速度v足够大，轻弹簧一端固定，另一端连接一个质量为m的滑块，已知滑块与皮带之间存在摩擦，当滑块放在皮带上时，弹簧的轴线恰好水平，若滑块放到皮带的瞬间，滑块的速度为零，且弹簧正好处于自由长度，则当弹簧从自由长度到第一次达最长这一过程中，物体的速度和加速度变化的情况是（）A．速度增大，加速度增大B．速度增大，加速度减小C．速度先增大后减小，加速度先增大后减小D．速度先增大后减小，加速度先减小后增大6．如右图所示，A、B两人用安全带连接在一起，从飞机上跳下进行双人跳伞运动，最后安全着陆，降落伞未打开时不计空气阻力。

高三语文寒假作业答案2

高三语文寒假作业答案(2)4.A解析：此题A项答案正确。

根据语境来推断此题。

“素养”与“修养”“品质”，词义有明显不同。

“情境”与“环境”“情形”也不一样。

“沟通”与“勾通”有明显差异。

5.B解析：“暴发”和“爆发”两个词都是动词，都含有“突然发作”的意思，但二者的使用范围有所不同，“爆发”的使用范围比“暴发”宽。

“暴发”：指突然发财或得势，多含有贬义;也指突然发作，多用于山洪、大水或疾病等具体事物和。

“爆发”：指因爆炸而迅猛发生，多用于具体事物;也指像那样突然地发生，多用于抽象事物，如革命、起义、运动等重大事变，再如力量、情绪等等。

“抚养”用于长对幼之间的爱抚、教养;“赡养”用于晚辈对长辈的照顾、供养。

“盈利”：获取利润。

“营利”：谋求私利。

(3)句中用“营利”更合适。

6.C解析：“起用”的意思是重新任用已退职或免职的官员，也指提拔使用新人;“启用”的意思是开始使用。

根据(1)句句意，应该是开始使用，应用“启用”。

“体验”的意思是通过实践来认识周围的事物;“体味”的意思是仔细体会，比如“人生苦乐”。

(2)句应该用“体味”。

“侧目”的意思是不敢从正面看，斜着眼睛看，形容畏惧而又愤恨;“刮目”的意思是指彻底改变眼光。

(3)句中说的是艺术欣赏方面的才能，应该用“刮目”。

7.A解析：“终身”指一生，一辈子，多就切身的事说;“终生”指一生，多就事业说。

结合语境，(1)句应选“终身”，据此排除C、D两项。

(2)句的语境是说时间久了认不出同桌，应选“辨认”(侧重“认”)，再排除B项，选A项。

另外，也可从第三组词入手辨别。

茶叶当然要尝一下才能领略其妙处，所以应选“品尝”(侧重“尝”)，排除“品评”(侧重“评”，评论)。

8.D解析：“审定”，审查决定;“审订”，审阅修订。

根据(1)句语境，“上作计划呈报上报实施”，重点应在“经上级审查决定”，故应选“审定”。

“许诺”“承诺”都有“答应照办”之意，不同在于“许”为“答应”之意，“承”为“承担”之意，“承诺”要比“许诺”庄重，根据语言环境“郑重立下誓言”，选“承诺”较合适。

天津市耀华中学2021-2022学年高三上学期寒假综合练习(二)英语试题含解析

天津市耀华中学2022届高三寒假综合练习(二)英语I. 单选1. —It looks heavy.Can I give you a hand?—________A.No, thanks.B.Yes, my pleasure.C.No, never mind.D.Yes, I do.2. I refuse to accept the blame for something ________ was someone else’s fault.A.whoB.thatC.asD.what3. My mother opened drawer to ________ the knives and spoons.A.put awayB.put upC.put onD.put together4. All the dishes in this menu, ________ otherwise stated, will serve two or three people.A.asB.ifC.thoughD.unless5. —I apologize for not being able to join you for dinner.—________.We’ll get together later.A.Go aheadB.That’s rightC.Not to worryD.Don’t mention it6. I’m sure that your letter will get ________ attention. They know you’re waiting for the reply.A.continuedB.immediateC.carefulD.general7. I’m calling to enquire about the position ________ in yesterday’s China Daily.A.advertisedB.to be advertisedC.advertisingD.having advertised8. Encourage your children to try new things, but try not to ________ them too hard.A.drawB.strikeC.rushD.push9. Children who are not active or ________ diet is high in fat will gain weight quickly.A.whatB.whoseC.whichD.that10. It ________ have been Tom that parked the car here, as he is the only one with a car.A.mayB.canC.mustD.should11. Jenny nearly missed the flight ________ doing too much shopping.A.as a result ofB.on top ofC.in front ofD.in need of12. Scientists have many theories about how the universe ________ into being.A.cameB.was comingC.had comeD.would come13. It is immediately clear ________ the financial crisis will soon be over.A.sinceB.whatC.whenD.whether14. Could I speak to ________ is in charge of International Sales please?A.whoB.whatC.whoeverD.whatever15. His sister left home in 1998, and ________ since.A.had not been heard ofB.has not been heard ofC.had not heard ofD.has not heard ofII. 完形填空In the summer of my eleventh year, the home I had grown up in was __16__ in the middle of the night. Thankfully, my mom, dad, brothers and I __17__ through the smoke. However, we had only the night clothes we were __18__ in.I __19__ the rest of that night with friends of our family, __20__ trying to sleep in a bed in their basement. That’s because I was too __21__ to sleep. I didn’t know what __22__ things would lie ahead of us. The next day, my mom __23__ me a few T-shirts and pairs of jeans given to her by another friend. One pair of jeans was too short and the other was too long but I didn’t __24__. At least I had some clothes again. Meanwhile my dad __25__ to the blackened ruins of our home to see what he could find. The only thing he could __26__ was my mom’s wedding rings. The plastic case she had put them in that night had melted but protected the rings from the __27__.As the __28__ days went on, in spite of having little money, my dad was able to __29__ us a dusty old house by the side of the road near where our old house had been. As we moved in, our friends and our community continued to __30__ all they could to help us __31__ our feet. There were more clothes, furniture, food, money and even some books for me to recover from the disaster.Looking back now, I am __32__ for all we went through because it __33__ me so much about life, love and people. It showed me that when you have nothing left but __34__ ,for the first time you will see that love is enough.__35__ you always have “Enough” then for all the days of your life here.16.A.burned out B.taken up C.put out D.washed away17.A.walked B.escaped C.looked D.rested18.A.working B.eating C.entertaining D.sleeping19.A.preferred B.forgot C.spent D.describedually B.unsuccessfully C.formally D.irregularly21.A.scared B.crazy C.hesitant D.old22.A.illegal B.harmonious C.terrible D.smooth23.A.purchased B.brought C.awarded D.paid24.A.regret B.respond C.care D.contradict25.A.returned B.added C.referred D.admitted26.A.lose B.sense C.save D.recall27.A.mud B.ruins C.dust D.flames28.A.summer B.spring C.autumn D.winter29.A.buy B.rent C.borrow D.sell30.A.explain B.discount C.empty D.donate31.A.make use of B.check on C.get back on D.relieve of32.A.hateful B.anxious C.sure D.grateful33.A.guaranteed B.taught C.warned D.discouraged34.A.love B.clothes C.furniture D.food35.A.Can B.Should C.Must D.MayIII. 阅读理解AWhen first entered, Vanak Restaurant does not look like much of a restaurant, but once the pleasant smells of kabob (烤肉串) hit the senses, you are incapable of calling it anything less.Owned by a local couple, this Persian restaurant has an inviting, homelike atmosphere that many restaurants lack.The space is small with only a few dining tables and nearly no decoration, but the environment is truly charming.Lying in a hardly noticeable street corner, the restaurant still attracts all customers, especially those experienced in the delights of Middle Eastern cooking.A common sight is that of old Persian men sitting in the corner talking loudly about world topics, watching news events on TV, drinking a black tea known as Persian chai, and reading local Persian newspapers all the while trying to finish off their plates piled with food.The variety of food at the restaurant is limited, but the amount of each dish is fairly large. Most of the meals can serve two people and are under $10, so not only is it affordable but practical as well.The food especially appeals to health-conscious eaters because each dish is very healthy, made with limited fat and oil and served straight off the grill (烤肉架).The main dish that the restaurant is popular for is its kabobs, which are different styles of grilled meat.One delicious and extremely healthy dish is the Joojeh Kabob, which is made of grilled chicken pieces served with either rice or bread. Another great kabob is the Cheio Kabob, a kabob consisting of grilled beef.Although the restaurant is small, the atmosphere and the food is delicious. It is a place that should not be overlooked.36. When first entering the restaurant, one can find that it________.A.has pleasant smells of kabobsB.is splendidly decoratedC.is crowded with dining tablesD.looks like a common restaurant37. What activity is also mentioned apart from dining in the restaurant?A.Reading local English newspapers.B.Drinking a kind of black coffee.C.Watching news events on TV.D.Discussing world topics in low voices.38. The food of the restaurant________.A.is served in small amountsB.is rather expensiveC.is rich in varietyD.is very healthy39. What is the dish Joojeh Kabob mainly made of?A.Rice.B.Chicken.C.Bread.D.Beef.40. It can be inferred from the passage that the restaurant________.A.occupies a large spaceB.owns a favorable locationC.is popular for its special foodD.has a quiet environment insideBOne evening in February 2007, a student named Paula Ceely brought her car to a stop on a remote road in Wales. She got out to open a metal gate that blocked her path. That’s when she heard the whistle sounded by thecar almost a kilometre down the railway tracks.Ceely’s near miss made the news because she blamed it on her GPS device. She had never driven the route before. It was dark and raining heavily. Ceely was relying on her GPS, but it made no mention of the crossing. “I put my complete trust in the device and it led me right into the path of a speeding train,” she told the BBC.Who is to blame here？Rick Stevenson, who tells Ceely’s story in his book When Machines Fail Us, points the finger at the limitations of technology. We put our faith in digital devices, he says, but our digital helpers are too often not up to the job. They are filled with small problems. And it’s not just GPS devices：Stevenson takes us on a tour of digital disasters involving everything from mobile phones to wireless keyboards.The problem with his argument in the book is that it’s not clear why he only focuses on digital technology, while there may be a number of other possible causes. A map-maker might have left the crossing off a paper map. Maybe we should blame Ceely for not paying attention. Perhaps the railway authorities are at fault for poor signaling system. Or maybe someone has studied the relative dangers and worked out that there really is something specific wrong with the GPS equipment. But Stevenson doesn’t say.It’s a problem that runs through the book. In a section on cars, Stevenson gives an account of the advanced techniques that criminals use to defeat computer-based locking systems for cars. He offers two independent sets of figures on car theft；both show a small rise in some parts of the country. He says that once again not all new locks have proved reliable. Perhaps, but maybe it’s also due to the shortage of policemen on the streets. Or changing social circumstances. Or some combination of these factors.The game between humans and their smart devices is amusing and complex. It is shaped by economics and psychology and the cultures we live in. Somewhere in the mix of those forces there may be a way for a wiser use of technology.If there is such a way, it should involve more than just an awareness of the shortcomings of our machines. After all, we have lived with them for thousands of years. They have probably been fooling us for just as long.41. What did Paula Ceely think was the cause of her accident?A.She was not familiar with the road.B.It was dark and raining heavily then.C.The railway workers failed to give the signal.D.Her GPS device didn’t tell her about the crossing.42. The phrase “near miss” (Paragraph 2) can best be replaced by________.A.close hitB.heavy lossC.narrow escapeD.big mistake43. Which of the following would Rick Stevenson most probably agree with?A.Modern technology is what we can’t live without.B.Digital technology often falls short of our expectation.C.Digital devices are more reliable than they used to be.D.GPS error is not the only cause for Ceely’s accident.44. In the writer’s opinion, Stevenson’s argument is________.A.one-sidedB.reasonableC.puzzlingD.well-based45. What is the real concern of the writer of this article?A.The major causes of traffic accidents and car thefts.C.The shortcomings of digital devices we use.D.The relationship between humans and technology.CHave you ever complained, “I remember reading it, but I can’t remember what it said？”If so, then you should try the SQ4R reading method.S＝Survey. The first step is to take a few minutes skimming the chapter. Don’t read it yet, just look at topic headings, key words, and read the summary.Q＝Question. As you prepare to read the chapter, turn the first topic into a question or two. As you read, search for the answer. This will help you organize your reading—find the parts that answer your question, give an example, consist of related information or that may answer a later question. Most importantly, this gives you a reason to read the next paragraph.R＝Read. Read in short “bites” (部分), then determine how that answers the question(s) you originally posed (提出).Often as you read other questions will arise.R＝Recite. Now can you answer your question(s) in your own words？If you can’t, reread the material to find the answers or determine if you need to change the question. You are rehearsing (重复, 默诵) for the time when you will need to know the answer. A good technique for rehearsing answers is to briefly jot down (草草记下) the key words that remind you of the essence of the answer without writing down every detail.R＝Relate. Most of us try to relate what we are reading to what we already know. It is always easier and more satisfying to remember information that is personally meaningful. Everything has a context. Some information may take more reflection before you are able to grasp its relationship with what you already know while other information may simply require more research, to understand how it fits with other data.R＝Review. One way to minimize memory decay (衰退) and to store the material you have studied firmly in your mind is by reviewing it. After you finish reading the entire chapter, skim back over it and any note you made.Effective studying requires effective reading. Rather than getting “intellectual indigestion” while reading straight through a chapter, instead you should stop to survey, question, read, recite, relate, and review so as to improve your reading comprehension.46. What does the passage mainly tell us?A.Six steps to skim through a chapter.B.The purpose of using the SQ4R reading method.C.An effective way of getting “intellectual indigestion”.D.A method to help you learn what you read effectively.47. In the author’s view, the step of “reading” is a process that________.A.you determine what questions should be posed and answeredB.you find key words to remind you of the essence of a chapterC.you search for answers to the questions you created before readingD.you make preparations for the next steps—recite and relate48. Why does the author advise readers to relate what they learn while reading a chapter?A.Because it can make us recognize the meaningful information.C.Because it’ll be more enjoyable as we’ll be reminded of what we’ve known.D.Because it’ll be easier to grasp and remember the information from the chapter.49. How can we remember what we have learned firmly according to the passage?A.By reading it.B.By reviewing it.C.By questioning it.D.By relating it.50. Unlike the SQ4R reading method, “intellectual indigestion” may result from the way of________.A.rehearsing for the time when you will need to know the answerB.not finding a purpose for reading the next paragraphC.reading straight through a chapter ineffectivelyD.reviewing many times to store materials in your mindDIn Western countries people have been using the installment plan since the first half of the twentieth century. Today, a large number of families in Great Britain buy furniture, household goods and cars by installments. In the U.S.A., the figure is much higher than in Great Britain, and people there spend over 10 percent of their income on the installment plan.The price of an article bought on installments is always higher than the price that would be paid by cash. There is a charge for interest. The buyer pays one quarter or one third of the price as a down payment when the goods are delivered to him. He then makes regular payments, weekly or monthly, until the full price is paid up. The legal ownership of the goods remains with the seller until the final payment has been made.Installment buying has advantages and disadvantages It can help couples with small incomes to furnish their homes and start housekeeping. It increases the demand for goods, and in this way helps business and employment. There is, however, the danger that when business is bad, installment buying may end suddenly, making business much worse. This may result in a great increase in unemployment. If the people on the installment plan lose their jobs, they will probably not be able to make their payments. If great numbers of people are not able to pay their installment debts, there is a possibility that businessmen cannot collect their debts and will therefore lose money. If businessmen lose money or fail to make a satisfactory profit, it becomes more likely to have a depression. This is why, in some countries, the government controls the installment plan by fixing the amount of the down payment and installments to discourage people from buying more than they can pay for on the installment plan.51. Which of the following is NOT true about the installment plan?A.A lot of British families use the installment plan.B.More than 10 percent American families buy things on installments.C.Americans depend more on installment than British people do.D.Americans spend one tenth of their income on installment buying.52. Goods bought on installments are more expensive than goods bought by cash because________.A.the buyer has to pay extra money as interestB.the delivery of the goods charges extra moneyC.the buyer has to pay a down paymentD.the service offered by installment plan charged extra money53. What will happen to a buyer if he fails to make the full payment for an item bought on installments?A.He might lose his job.C.He will have to sell what he has bought.D.He will go into debt.54. The advantage of installment buying might include all the following EXCEPT that________.A.purchasing power is strengthenedB.employment might be increasedC.people develop a good habit of saving moneyD.young couples are able to furnish their homes55.In some countries, the governments control the installment plan to________.A.increase employmentB.avoid depressionsC.ensure that businesses make good profitsD.ensure that people can pay for what they buyIV. 阅读表达A loving person lives in a loving world. A hostile person lives in a hostile world. Everyone you meet is your mirror. Mirrors have a very particular function. They reflect the image in front of them. Just as a physical mirror serves as the vehicle to reflection, so do all of the people in our lives.When we see something beautiful such as a flower garden, that garden serves as a reflection. In order to see the beauty in front of us, we must be able to see the beauty inside of ourselves. When we love someone, it’s a reflection of loving ourselves. We have often heard things like “I love how I am when I’m with that person.”That simply translates into “I’m able to love me when I love that other person.”Often when we meet someone new, we feel as though we “click”. Sometimes it’s as if we’ve known each other for a long time. That feeling can come from sharing similarities.Just as the “mirror” or other person can be a positive reflection, it is more likely that we’ll notice it when it has a negative connotation. For example, it’s easy to remember times when we have met someone we’re not particularly crazy about. We may have some criticism in our mind about the person. This is especially true when we get to know someone with whom we would rather spend less time.Frequently, when we dislike qualities in other people, ironically, it’s usually the mirror that’s speaking to us. I began questioning myself further each time I encountered someone that I didn’t particularly like. Each time, I asked myself, “What is it about that person that I don’t like？” and then “Is there something similar in me？” I could see a piece of that quality in me. So what did that mean？It means that just as I can get annoyed or disturbed when I notice that aspect in someone else, I’d better reexamine my qualities and consider making some changes. Even if I’m not willing to make a big change, at least I consider how I might modify some of the things that I’m doing.At times we meet someone new and feel distant, disconnected or disgusted. Although we don’t want to believe it, and it’s not easy or desirable to look further, it can be a great learning lesson to figure out what part of the person is being reflected in you. It’s simply just another way to create more self-awareness.56. Why is everyone we meet our mirror according to the passage？(no more than 10 words)57. What is the reflection of our loving others？(no more than 10 words)58. What does the underlined word “modify” mean？(no more than 2 words)59. How can we benefit from a person who has the qualities that we don’t like？(no more than 10 words)60.What will you do to develop your self-awareness in daily life？(no more than 25 words)天津市耀华中学2022届高三寒假综合练习(二)英语答案I. 单选1．A本题考查情景交际。

2021年高三物理寒假作业2含答案

2021年高三物理寒假作业2含答案一、选择题.1.（单选）关于力学单位制说法中正确的是( )A．kg、m/s、N是导出单位B．kg、m、J是基本单位C．在国际单位制中，质量的基本单位是kg，也可以是gD．只有在国际单位制中，牛顿第二定律的表达式才是F＝ma2.（多选）关于平抛运动，下面说法正确的是（）A．由于物体只受重力作用，因此平抛运动是匀变速运动B．由于速度的方向不断变化，因此平抛运动不是匀变速运动C．平抛运动的时间由抛出时的高度和初速度的大小共同决定D．平抛运动的水平位移由抛出时的高度和初速度的大小共同决定3.（单选））图象如下图所示，由图象可以看出在0〜4 s内（）A.甲、乙两物体始终同向运动B.4s时甲、乙两物体间的距离最大C.甲的平均速度等于乙的平均速度D.甲、乙两物体之间的最大距离为4 m4.（多选）理想变压器正常工作时，原线圈一侧与副线圈一侧保持不变的物理量是（）A．频率 B．电压 C．电流 D．电功率5.（单选）质量为60kg的人，站在升降机内的台秤上，测得体重为480N，则升降机的运动应是（）A．匀速上升或匀速下降B．加速上升C．减速上升D．减速下降6.（单选）如图所示，电流表与螺线管组成闭合电路，以下不能使电流表指针偏转的是（）A．将磁铁插入螺线管的过程中B．磁铁放在螺线管中不动时C．将磁铁从螺线管中向上拉出的过程中D．将磁铁从螺线管中向下拉出的过程中7.（单选）如图所示，把长为L的导体棒置于垂直纸面向里的匀强磁场中，磁感应强度为B，当导体棒中通以方向向左的电流I时，导体棒受到的安培力大小和方向分别是（）A．大小为BIL，方向竖直向上B．大小为BIL，方向竖直向下C．大小为，方向竖直向上D．大小为，方向竖直向下A、B均处于静止状态,此时弹簧压缩量△x1。

现通过细绳将A向上缓慢拉起，第一阶段拉力做功为W1时，弹簧变为原长；第二阶段拉力再做功W2时，B刚要离开地面，此时弹簧伸长量为△x2。

人教版高三语文寒假作业答案

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文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如职场文书、合同协议、总结报告、演讲致辞、规章制度、自我鉴定、应急预案、教学资料、作文大全、其他范文等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor. I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!Moreover, our store provides various types of classic sample essays for everyone, such as workplace documents, contract agreements, summary reports, speeches, rules and regulations, self-assessment, emergency plans, teaching materials, essay summaries, other sample essays, etc. If you want to learn about different sample essay formats and writing methods, please stay tuned!人教版高三语文寒假作业答案导语高三学生很快就会面临继续学业或事业的选择。

高三年级语文寒假作业本答案

精心整理高三年级语文寒假作业本答案【篇一】1.橘子jú百舸gě寥廓liáokuò峥嵘zhēngróng 遏止è遒劲qiú灰烬jìn 笔杆gǎn 瞳孔tòng 惆怅chòu 轻蔑miè嘲讽憎恨象。

“光完全，绝对)(绝交)( 假：(借)(凭借，借助)(宽容)(假，不真，与“真”相对)(如果、假如)(给与)4.而(连词表示并列关系。

)(连词，表示递进关系。

可译为“并且”“或”“而且”。

)(连词，表示承接关系。

可译为“就”“接着”，或不译)(连词，表示转折关系，可译为“但是”“却”。

)(连词，表示假设关系。

可译为“如果”“假如”。

)(连词，表示修饰关系，即连接状语。

可不译。

)(用作代词。

只用作第二人称，一般作定语，译为“你的”)(复音虚词“而已”，放在句末，表示限止的语气助词，(3)枯得2出了它的高，又用细节描写，写怒江发源之远，用“腾”字是写森气之厉，又写作者自己的表现，烘托出怒江，绝壁令人生畏(内心感受，1分)。

(合计得2分)感悟：1)理解十八种手法;2)在答题时学会筛选，宁多不漏。

7.(6分)本文用不少笔墨写牛，这对环境描写和人物刻画各有什么作用?牛不肯挪动半步的恐惧和溜索时流泪发抖：(1)侧面表现怒江峡谷的高峻险恶;(2分)(2)与“我”“战战兢兢”互相映衬;(2分)又与领队及汉子的勇);2)1.全球化视野追求卓越的意识宽松环境平和的心态2.韩愈的文章追求波澜起伏的独特美。

3、①要加强网络信息管理②对待网络信息要理智。

(或不要轻信网络谣言。

)4.新媒体多平台互联网体系传播5.胶囊旅馆是在日本加班文化背景下产生的一种空间小、配备齐、费用低的旅馆。

6.利比亚宣布全国解放重建任务艰巨或卡扎菲时代结束利比亚2分)人)分)她做一切事情。

2.(1)①语意双关，有距离才有美,另一层意思是请保持好车距,只有保持一定的距离，相互才是安全的,才是一件“美”事。