高一寒假作业5
苏教版高中数学必修二高一年级寒假作业(五).docx
2014-2015学年度高一年级数学寒假作业(五)高一数学 2015.2编制人:蒋云涛 审核:备课组一、填空题:本大题共14个小题,每小题5分,共计70分,请把答案直接填写在答题卡相应的位置........上。
1.sin 960=__________。
2、已知集合},20|{Z x x x A ∈≤<=,则集合A 的子集个数3、已知sin()3cos()0πθπθ-++=,其中(0,)2πθ∈,则=θcos .4.已知函数()lg 3f x x x =+-在区间(,)a b 上有一个零点(,a b 为连续整数),则a b += 。
5. 函数wx x f tan )(=)0(>w 的图象的相邻两支截直线2=y 所得的线段长为的值是则)12(,8ππf 。
6.函数)cos 23lg(x y -= 的定义域为 。
7. 函数)sin(ϕ+=wx A y )0,0(>>w A 的部分图象如图所示,则)11(...)2()1(f f f +++3)的值等于______________。
8、已知函数1()lg sin 1x f x x x-=++,若()2f m =,则()f m -= 9、已知)(x f y =是定义在R 上的奇函数,且当0>x 时,x x f 21)(+=,则=)8(log 21f .10.若两个函数的图象经过若干次平移后能够重合,则称这两个函数为“同形”函数。
给出下列三个函数:x x x f cos sin )(1+=,2()2sin 2f x x =+,3()sin f x x =,试写出一对“同形”函数是_____________.11、已知()f x 为定义在,22ππ⎡⎤-⎢⎥⎣⎦上的偶函数,当0,2x π⎡⎤∈⎢⎥⎣⎦时,()2cos 3sin f x x x =-, 设(cos1),(cos2),(cos3)a f b f c f ===,则,,a b c 的大小关系为 .12.函数|s in |2s in x x y +=,]2,0[π∈x 的图象与直线k y =有两个交点,则k 的取值范围为 .13、函数)62sin(3)(π-=x x f 的图象为C .如下结论: ①函数的最小正周期是π; ②图象C 关于直线π31=x 对称; ③函数125,12()(ππ-在区间x f )上是增函数; ④由x y 2sin 3=的图象向右平移3π个单位长度可以得到图象C . 其中正确的是 . (写出所有正确结论的序号)14.给出下列命题:① 存在实数α,使2sin =α②存在实数α,使23cos =α③函数)23sin(x y +=π是偶函数 ④8π=x 是函数)452sin(π+=x y 的一条对称轴方程⑤若βα、是第一象限的角,且βα>,则βαs in s in >其中正确命题的序号是_______________二、解答题:本大题共6小题,计90 分。
高一物理寒假作业5(2021年整理)
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高一物理寒假作业(五)一、选择题1.如图所示,清洗楼房玻璃的工人常用一根绳索将自己悬在空中,工人及其装备的总重力为G,悬绳与竖直墙壁的夹角为α,悬绳对工人的拉力大小为F1,墙壁对工人的弹力大小为F2,则()A.F1=错误!B.F2=Gtan αC.若缓慢减小悬绳的长度,F1与F2的合力变大D.若缓慢减小悬绳的长度,F1减小,F2增大2.如图所示,一斜劈C被两个小桩固定在光滑的水平地面上,B置于斜面上,通过细绳跨过光滑的定滑轮与A连接,连接B的一段细绳与斜面平行,A、B、C都处于静止状态,则()。
A.B受到C的摩擦力一定不为零B.C可能受到左边小桩的弹力C.不论B、C间摩擦力大小、方向如何,C一定受到右边小桩的弹力D.水平面对C的支持力的大小可能等于B、C的总重力3.F1、F2是力F的两个分力。
若F=10 N,则下列哪组力不可能是F的两个分力( )。
A.F1=10 N F2=10 N B.F1=20 N F2=20 NC.F1=2 N F2=6 N D.F1=20 N F2=30 N4.在建筑工地上有一台塔吊正在匀速吊起一块水泥板,如图所示。
水泥板重G,绳PA能承受的最大拉力为2G,绳AB、AC等长且能承受的最大拉力均为G,则AB与AC之间的夹角不能超过()。
A.30° B.60°C.90° D.120°5.如图所示,凹槽半径R=30 cm,质量m=1 kg的小物块在沿半径方向的轻弹簧挤压下处于静止状态。
新教材高一英语寒假作业Unit5新人教版必修
Unit 5 MusicDiscovering Useful Structures & Listening and Talking1、The factory _______ (unemployed) over 2,000 people.2、You are smart and _______ (talent) on this subject.3、They spent a lot of money_______ ( equipment) the school with new computers.4、I didn’t have the _______(slight) idea who that man was.5、Some members travelled a long _______(distant) to attend the meeting.6、我成了一名教师,因为我喜欢书籍和人甚于政治。
I became a teacher because I _____ books and people_____ politics.7、不要像跟孩子说话那样跟我说话。
Don’t talk to me _______ you talk to a child.8、上中学时,我试演过各种角色。
In high school,I ____ ____ ____ all kinds of characters.9、认为经济将继续好转是有道理的。
_____ _____ _____ _____ _____ _____ the economy will continue to improve.10、除了电影事业外,雷德福还是位公认的环保斗士。
_____ _____ _____ his movie work, Redford is known as a champion of environmental causes.11、 Music is not just a set of sounds and rhythms. Its influence on the brain is much deeper than any other human experiences. Keep on reading to know all the amazing power of music.A recent study suggested that preterm (早产的babies appeared to experience less pain and feed more when listening to music. Experts led by Dr. Manoj Kumar of the University of Alberta, Canada,found that music had a beneficial effect on reducing the pain of preterm babies when experiencing painful medical tests. It also appeared to benefit full-term babies during operations.Many people experiencing brain damage often have speech and movement-related problems. Music can help them recover from brain injuries. As a different and effective treatment, doctors often advise such patients to listen to good music toimprove the parts of the brain responsible for these two functions. When people with neurological (神经系统的)disorders hear a musical beat,it helps them regain a balanced walk.Though music cannot make deafness disappear, it really can stave off the loss of hearing. There was an experiment involving 163 people, 74 of whom were musicians. Participants were asked to do some listening tests. Musicians heard the sounds better than non-musicians, and this difference got clearer with age. This means that a 70-year-old musician hears better than a 50-year-old non-musician, even in a noisy environment.Besides, music can mend a broken heart. It is not about a thrown-away love, but about a heart attack. The matter is that music can help people recover from a heart attack or a heart operation by reducing blood pressure, slowing down the heartbeat rate and reducing anxiety. Listening to quality music produces positive emotions, improves the movement of blood and expands blood vessels, thus promoting quick recovery of the whole cardiovascular (心血管的)system.1.How does music affect preterm babies?A.It helps reduce their pain.B.It helps develop their potential in music.C.It helps improve their hearing systems.D.It helps repair their neurological systems.2.What does the underlined phrase "stave off" in Paragraph4 mean?A.Lead to.B.Increase.C.Prevent.D.Break into.3.Why can music mend a broken heart?A.Because it has a positive effect on human body systems' work.B.Because it can help people prevent diseases caused by anxiety.C.Because it helps make a person feel optimistic about life.D.Because it can help patients recover in a slow way.4.What may be the best title for the text?A.Who can benefit from musicB.The best time to listen to musicC.The way to choose quality musicD.How music affects our mind and body12、 Hospitals employ many therapeutic(治疗的) methods, such as medication(药物治疗), massage(按摩) therapy and music therapy. And music therapy is growing in popularity.Sandra Siedliecki is a Senior Scientist at the Nursing Institute of Cleveland Clinic in Ohio. She says music is a low-cost treatment. And she says scientists have done a lot of research on music's effect on pain. Dr. Marian Good did a lot of studies looking at surgery(外科) patients and the use of music. In her studies, patients just listened to relaxing music. Dr. Good found that her surgery patients took fewer painkillers after they listened to music. Music had a good effect on short-term pain. However, chronic pain, the kind that recurs(复发) continually, changed a little under the effect of music.Dr. Linda Chian was studying something different. She was not interested in patients’ pain, but instead, the ir anxiety. She spent a lot of time with people who were in the hospital because their anxiety was so great that they couldn't breathe. People with this condition often have to use breathing machines. Dr. Chian said that the machines sometimes did little to improve their condition. Sometimes they even made things worse. The patients would become more anxious. Dr. Chian let nurses tell patients that music was a good choice to make them feel better. They also placed signs near the patients' beds —Listen to your music at least twice a day. The people who listened to music had a reductio(减少) in the amount of medication they received. In addition, their anxiety reduced by about 36 percent.Both doctors had similar explanations for why music was so helpful. Music can be a very powerful distracter(干扰) in the brain when we're listening to music that is pleasing and then it interrupts stressful thoughts.1.Dr. Marian Good s studies show that music therapy _________.A.can help patients recover fastB.cannot take the place of medicationC.doesn't work well on all patientsD.is cheaper than massage therapy and medication2.Which of the following is TRUE according to the passage?A.Dr. Good and Dr. Chian didn't agree with each other on music's effect.B.Patients will forget their illnesses completely while listening to musicC.Patients with great anxiety would not recover after taking medicine.D.Listening to enjoyable music is a good way to relieve anxiety.3.What does the underlined word “it” in the last paragraph re fer to?A.The brain.B.Music.C.Stress.D.Medicine.4.What is the author's purpose of writing the passage?A.To show that music therapy is useful.B.To encourage all patients to listen to music.C.To tell how to reduce pain and anxiety.D.To explain how music reduces pain and anxiety.13、 Vienna is a beautiful old city on the river Danube. It's the capital city of Austria and the centre of 1.________(Europe) classical music. From 1750 a lot of composers and musicians 2.________(come) to study and work in Vienna. The most famous family of musicians was the Strauss family.There were two composers 3.________(call) Johann Strauss:a father and a son. The father, Johann Strauss the elder, wrote and played music 4.________ a classical dance—a waltz. His waltzes made him famous all over Europe.The son, Johann Strauss the younger, was even 5.________(successful) and popular than his father. He wrote more than 400 waltzes and his most famous one was The BlueDanube. He wrote it in 1867. Strauss and Mozart were two of 6.________ most important composers.Mozart was born in Austria in 1756. By the time he was six, he 7.________(play) not only the piano, but also the violin and the organ. His family took him around Europe and he gave 8.________(concert) in many cities. He wrote his first opera at the age of 12 and hundreds of beautiful pieces of music for the classical orchestra.9.________(fortunate), he died 10.________ he was only 35. Some people say he was the greatest European composer.答案以及解析1答案及解析:答案:1.客观填空 employs解析:句意:这家工厂雇用了 2000多名员工。
高一数学寒假作业05 函数的概念与表示(教师版)
高一数学寒假作业专题05函数的概念与表示1.已知函数f(x)={2−x ,x ≤0f(x −1),x >0,则f(2021)=( )A .2B .12C .1D .4【答案】C 【解析】当x >0时,f (x )=f (x −1),故在x >0时,f (x )为周期函数,最小正周期为1,因为2021>0,所以f (2021)=f (2021×1+0)=f (0),又因为当x ≤0时,f (x )=2−x ,所以f (0)=20=1,所以f(2021)=1 故选:C2.函数f(x)=√x +1+1x−1的定义域是( )A .[-1,+∞)B .(-1,1)∪(1,+∞)C .(1,+∞)D .[-1,1)∪(1,+∞)【答案】D 【解析】要使函数f(x)=√x +1+1x−1有意义, 必须满足{x +1≥0x −1≠0,解得x ≥−1,且x ≠1,所以函数f(x)=√x +1+x x−1的定义域是[−1,1)⋃(1,+∞), 故选:D.3.函数f(x)={2x 2,0≤x <1,2,1≤x <2,3,x ≥2的值域是( )A .RB .[0,+∞)C .[0,3]D .[0,2]∪{3}【答案】D 【解析】当0≤x <1时,f(x)∈[0,2); 当1≤x <2时,f(x)=2; 当x ⩾2时,f(x)=3,根据分段函数的性质可知,f(x)的值域为[0,2]⋃{3}. 故选:D .4.已知函数f (x )满足2f (x )+f (1x)=x ,则f (2)=( )A .12B .1C .76D .2【答案】C 【解析】由已知可得{2f (x )+f (1x )=x 2f (1x )+f (x )=1x ,解得f (x )=2x 2−13x,其中x ≠0,因此,f (2)=76. 故选:C.5.函数y =f (x )的图象与直线x =1的公共点有( ) A .0个 B .1个 C .0或1个 D .无数个【答案】C 【解析】当x =1在函数f (x )的定义域内时,函数y =f (x )的图象与直线x =1有一个公共点(1,f (1));当x =1不在定义域内时,函数y =f (x )的图象与直线x =1没有公共点. 故选:C.6.下列函数f (x )与g (x )表示同一函数的是( ) A .f (x )=x 2−1x−1和g (x )=x +1B .f (x )=1和g (x )=x 0C .f (x )=x +1和g (x )=√x 2+2x +1D .f (x )=x 和g (x )=lne x【答案】D 【解析】 对A ,f (x )=x 2−1x−1=x +1,定义域为{x |x ≠1},g (x )=x +1定义域为R ,故不是同一函数,故错误; 对B ,f (x )=1定义域为R ,g (x )=x 0=1,定义域为{x |x ≠0},故不是同一函数,故错误; 对C ,g (x )=√x 2+2x +1=√(x +1)2=|x +1|, 由f (x )=x +1,解析式不同,故不是同一函数,故错误; 对D ,f (x )=x 定义域为R ,g (x )=lne x =x 定义域为R ,故是同一函数,故正确; 故选:D7.某校要召开学生代表大会,规定各班每10人推选一名代表,当班人数除以10的余数大于6时,再增选一名代表,则各班推选代表人数y 与该班人数x 之间的函数关系用取整函数y =[x]([x]表示不大于x 的最大整数,如[π]=3,[4]=4)可表示为( ) A .y =[x+210] B .y =[x+310]C .y =[x+410]D .y =[x+510]【答案】B【解析】设班级人数的个位数字为n,令x=10m+n,(m∈N),当0≤n≤6时,y=m,当7≤n≤9时,y=m+1,综上,函数关系式为y=[x+310].故选:B.8.若函数f(x)={a x,x>1(4−a2)x+2,x≤1是R上的增函数,则实数a的取值范围为()A.(1,8)B.(1,+∞)C.[2,4]D.[4,8)【答案】D【解析】分段函数f(x)在R上为单调递增函数,需满足在各段内单调的基础上还得满足在临界点上左边界的值不大于右边界的值,即a>1且4−a2>0,a1≥4−a2+2,解得4≤a<8,故选:D.9.下列关于函数f(x)=1|x|+1的叙述正确的是()A.f(x)的定义域为{x|x≠0},值域为{y|y≥1}B.函数f(x)为偶函数C.当x∈[−1,0)时,f(x)有最小值2,但没有最大值D.函数g(x)=f(x)−x2+1有1个零点【答案】BC【解析】对A,f(x)的定义域为{x|x≠0},因为1|x|>0,所以1|x|+1>1,故值域为{y|y>1},所以A错误;对B,因为f(−x)=1|x|+1=f(x),所以f(x)是偶函数,B正确;对C,当x∈[−1,0)时,f(x)=1|x|+1≥2,所以C正确;对D,如图,f(x)=1|x|+1与y=x2−1有两个交点,所以g(x)有2个零点,所以D错误.故选:BC.10.下列各组函数是同一个函数的是()A.f(x)=√x+1⋅√x−1与g(x)=√x2−1B.f(x)=√−x3与g(x)=x√−xC.f(x)=√x2与g(x)=1|x|D.f(x)=(√x)2x与g(x)=(√x)2【答案】CD【解析】A选项,f(x)的定义域为{x|x≥1},g(x)的定义域为{x|x≤−1或x≥1},不是同一个函数. B选项,f(x)=√−x3,x≤0,f(x)=√−x⋅x2=−x√−x≠g(x),不是同一个函数.C选项,f(x)=√x2=1|x|=g(x),是同一个函数.D选项,f(x)=(√x)2x =1(x>0),g(x)=(√x)2=1(x>0),,是同一个函数.故选:CD11.已知函数f(√x−1)=2x+√x−3,则()A.f(1)=7B.f(x)=2x2+5xC.f(x)的最小值为−258D.f(x)的图象与x轴只有1个交点【答案】AD【解析】令t=√x−1≥−1,得√x=t+1,则x=(t+1)2,得f(√x−1)=f(t)=2t2+5t,故f(x)=2x2+5x,x∈[−1,+∞),f(1)=7,A正确,B错误.f(x)=2x2+5x=2(x+54)2−258,所以f(x)在[−1,+∞)上单调递增,f(x)min=f(−1)=−3,f(x)的图象与x轴只有1个交点,C错误,D正确.故选:AD12.已知函数f(x)=ln(1+x)−ln(1−x),则下列说法正确的是()A .f (x )的定义域为(−1,1)B .f (x )是奇函数C .f (x )是减函数D .若f (x )<0,则−1<x <0 【答案】ABD 【解析】由{1+x >01−x >0,得−1<x <1,所以函数f (x )的定义域为(−1,1),故选项A 正确; 因为f (x )=ln (1+x )−ln (1−x ),所以f (−x )=ln (1−x )−ln (1+x )=−f(x), 所以f (x )是奇函数,故选项B 正确;易知y =ln (1+x )在(−1,1)内单调递增,y =−ln (1−x )在(−1,1)内单调递增, 所以函数f (x )=ln (1+x )−ln (1−x )在在(−1,1)内单调递增,故选项C 错误; 由f (x )<0,得ln (1+x )−ln (1−x )<0,即ln (1+x )−ln (1−x )<0,所以ln (1+x )<ln (1−x ),所以0<1+x <1−x ,解得−1<x <0,故选项D 正确. 故选:ABD.13.设函数y =√1+2x +a ⋅4x ,若函数在(−∞,1]上有意义,则实数a 的取值范围是_____.【答案】[−34,+∞) 【解析】设t =2x ,∵x ∈(−∞,1],∴0<t ≤2.则原函数有意义等价于1+t +at 2≥0在t ∈(0,2]上恒成立, ∴a ≥−t+1t 2,设f (t )=−1+t t 2=−(1t +12)2+14,∵0<t ≤2,所以1t ∈[12,+∞),∴f (t )≤f (12)=−34,∴a ≥−34.故答案为:[−34,+∞)14.已知函数f(x)=ln 2−x2+x −2,若f (a )=1,则f (-a )=_______【答案】−5 【解析】因为f (x )=ln 2−x2+x −2,所以f (−x )=ln 2+x2−x −2,∴f (x ) +f (−x )=ln 2−x2+x +ln 2+x2−x −4=ln [(2−x2+x )×(2+x2−x )]−4=−4, 则f (a )+f (−a )=−4,又因为f(a)=1,所以f(−a)=−5.故答案为:−5.15.直角梯形ABCD ,如图(1),动点P 从B 点出发,沿B →C →D →A 运动,设点P 运动的路程为x ,△ABP 的面积为f (x ).如果函数y =f (x )的图象如图(2)所示,则△ABC 的面积为__.【答案】16 【解析】由题意结合图(2)可知:BC =4,CD =9−4=5,AD =14−9=5, 过D 作DG ⊥AB∴AG =3,由此可求出AB =3+5=8. S △ABC =12AB ⋅BC =12×8×4=16. 故答案为:16.16.已知函数f (x )={x 3+1,x >00,x =0x 3−1,x <0,则不等式f (2−x 2)+f (−x )≥0的解集为___________.【答案】[−2,1] 【解析】∵函数f(x)={x 3+1,x >00,x =0x 3−1,x <0,当x >0时,−x <0,∴f(−x)=−x 3−1=−f(x), 当x <0时,−x >0,∴f(−x)=−x 3+1=−f(x), ∴f(x)为奇函数,又x >0时,f(x)=x 3+1>1单调递增,x <0时,f(x)=x 3−1<−1单调递增,f(0)=0,∴f(x)在在R 上单调递增,∴原不等式即:f (2−x 2)≥−f(−x)=f(x), 则2−x 2≥x ,解得:−2≤x ≤1. 故答案为:[−2,1]17.已知f (x )={(6−a)x −4a,x <1,log a x,x ≥1,是R 上的增函数,求a 的取值范围.【答案】65≤a <6 【解析】f (x )是R 上的增函数,则当x ≥1时,y =log a x 是增函数,∴a >1. 又当x <1时,函数y =(6-a )x -4a 是增函数.∴6-a >0,∴a <6. 又(6-a )×1-4a ≤log a 1,得a ≥65. ∴65≤a <6.18.求抽象函数的定义域.(1)已知函数f (x )=√1−x +√x +3,求函数f (x +1)的定义域; (2)已知函数f (3x +1)的定义域为(−1,6],求f (2x −5)的定义域. 【答案】 (1)[−4,0]; (2)(32,12]. 【解析】(1)由f (x )=√1−x +√x +3, 得{1−x ≥0x +3≥0,解得:−3≤x ≤1, ∴函数f (x )=√1−x +√x +3的定义域为[−3,1], 由−3≤x +1≤1,得−4≤x ≤0, 即函数f (x +1)的定义域为[−4,0]. (2)∵函数f (3x +1)的定义域为(−1,6], ∴−1<x ≤6,则−2<3x +1≤19, 即函数f (x )的定义域为(−2,19], 由−2<2x −5≤19,得32<x ≤12, ∴f (2x −5)的定义域为(32,12].19.已知函数f (x )满足对任意x 1,x 2∈R ,都有f(x 1+x 2)=f(x 1)f(x 2),f (x )>0 恒成立.且当x <0时,f (x )>1.(1)求f(0):(2)判断f(x)在R上的单调性,并证你的结论:(3)解不等式f(x)f(1-2x)>1.【答案】(1)f(0)=1;(2)f(x)在R上单调递减,证明见解析;(3)(1,+∞).【解析】(1)对任意x1,x2∈R,都有f(x1+x2)=f(x1)f(x2),令x1=x2=0,可得f(0)=f2(0),又f(x)>0,∴f(0)=1;(2)函数f(x)在R上递减.证明如下:设x1<x2,则x1−x2<0,则f(x1−x2)>1且f(x2)>0.∴f(x1)=f(x1−x2+x2)=f(x1−x2)f(x2)>f(x2),则函数f(x)在R上单调递减;(3)由(1)可知,f(0)=1,∴f(x)f(1−2x)>1=f(0),又对任意x1,x2∈R,都有f(x1+x2)=f(x1)f(x2),∴f(x+1−2x)>f(0),根据函数f(x)在R上单调递减可得,1−x<0,∴x>1,故不等式的解集为(1,+∞).20.(1)已知f(x)是一次函数,且满足2f(x+3)−f(x−2)=2x+21,求f(x)的解析式;(2)已知f(x)为二次函数,且满足f(0)=1,f(x−1)−f(x)=4x,求f(x)的解析式.【答案】(1)f(x)=2x+5;(2)f(x)=−2x2−2x+1.【解析】(1)设f(x)=ax+b(a≠0),则2f(x+3)−f(x−2)=2[a(x+3)+b]−[a(x−2)+b]=2ax+6a+2b−ax+2a−b=ax+8a+b=2x+21,所以a =2,b =5, 所以f(x)=2x +5. (2)因为f (x )为二次函数, 设f(x)=ax 2+bx +c(a ≠0). 由f(0)=1,得c =1. 又因为f(x −1)−f(x)=4x ,所以a(x −1)2+b(x −1)+c −(ax 2+bx +c)=4x , 整理,得−2ax +a −b =4x ,求得a =−2,b =−2, 所以f(x)=−2x 2−2x +1. 21.已知函数f (x )=a⋅2x +12x −1的图象经过点(1,3).(1)求a 的值(2)证明:函数f (x )是奇函数 【答案】 (1)a =1; (2)证明见解析. 【解析】(1)因为函数f (x )=a⋅2x +12x −1的图象经过点(1,3),所以3=a⋅21+121−1,解得:a =1.(2)由(1)知:f (x )=2x +12x −1,由2x −1≠0可得x ≠0,所以f (x )=2x +12x −1的定义域为{x|x ≠0}关于原点对称, f (−x )=2−x +12−x −1=(2−x +1)⋅2x (2−x −1)⋅2x=1+2x 1−2x=−2x +12x −1=−f (x ),所以函数f (x )是奇函数. 22.已知函数f(x)=x 21+x 2.(1)求f(2)+f (12),f(3)+f (13)的值; (2)求证:f(x)+f (1x )是定值;(3)求f(2)+f(3)+⋯+f(2022)+f (12)+f (13)+⋯+f (12022)的值. 【答案】 (1)1;1 (2)证明见解析 (3)2021 【解析】【分析】 (1)f(x)=x 21+x 2,f(2)+f (12)=41+4+141+14=1,f(3)+f (13)=91+9+191+19=1.(2)f(x)+f (1x )=x 21+x 2+(1x)21+(1x)2=x 21+x 2+11+x 2=1.(3)f(2)+f(3)+⋯+f(2022)+f (12)+f (13)+⋯+f (12022)[f(2)+f (12)]+[f(3)+f (13)]+⋯+[f(2022)+f (12022)]=2021×1=2021.。
(新教材)统编版高中政治高一寒假作业5 我国社会主义市场经济体制(含答案)
1.(2020·新课标I)2019年10月,《中共中央关于坚持和完善中国特色社会主义制度、推进国家治理体系和治理能力现代化若干重大问题的决定》首次将数据与劳动、资本、土地等并列,将其列为生产要素。
数据被列为生产要素是因为()①数据广泛融入生产过程,具有独特创造力②数据是最具流动性的基础性资源②数据的所有权和使用权可以分离④数据对提高生产效率的作用日益凸显A.①② B.①④C.②③ D.③④2.(2020·天津卷)对漫画《摇身一变》反映的经济现象认识正确的是()《摇身一变》作者:王铎①这是市场调节自发性的表现②市场交易应该遵循诚实守信的原则③供求关系决定价格,供不应求价格上涨④名人效应影响价格是市场调节盲目性的表现A.①④ B.①②C.②③ D.③④1.市场经济就是市场在资源配置中起决定性作用的经济。
在市场经济中,生产什么、如何生产、为谁生产,主要是通过市场机制的调节来实现的。
以下关键词中,不体现市场机制的是()A.价格B.供求C.行政命令D.竞争2.只有在某些障碍因素使市场调节不能正常发挥作用或者市场反应滞后的情况下,才有必作业 5 我国社会主义市场经济体制要采取某些导向性的产业政策来消除市场瓶颈,或提前为市场布局。
对此,下列理解正确的是()①计划和市场是配置资源的基本手段②计划和市场对资源配置的目的不同③市场在资源配置过程中起决定性作用④选择资源配置方式要先市场后计划A.①②B.①③C.②④D.③④3.读下图,下列判断正确的是()A.这个图示展示的是计划配置资源的流程B.这个图示展示的是市场配置资源的流程C.这个图示说明价格由多种因素共同决定D.这个图示说明市场是企业经营成功的决定因素4.2019年正式实施的电子商务法规定,电子商务经营者应当依法办理市场主体登记,依法履行纳税义务。
电子商务法的实施旨在()①促进电商履行责任,提高电商的营利能力②营造公平竞争环境,抵制不正当竞争行为③规范网络交易行为,维护网络交易秩序④提高电商的准入门槛,增强电商经营者的纳税意识A.①②B.②③C.①④D.③④5.近年来,网络商品交易迅猛发展。
新教材高一英语寒假作业Unit5新人教版必修
Unit 5 Languages around the worldDiscovering Useful Structures & Listening and Talking1、Many pictures have _________ (base) on simple geometric designs.2、A botanist can tell apart _________ (vary) of plants.3、He _________ (regard) as an important figure in history.4、She struggled _________ (bring) up a family alone.5、Now that we are all part of the _________ (globe) village, everyone becomes a neighbour.6、Do you know the building ________ _______ is flying a red flag?7、He would never tell me the reason ________ ________ he was late.8、The age ________ _________ children can go to school is seven.9、The pencil __________ _________ he wrote was broken.10、The woman _________ ________ I learned the news is a nurse.11、 Every week in China, millions of people will sit in front of their TVs watching teenagers compete for the title Character Hero, which is a Chinese-style spelling bee (拼字大赛). In this challenge, young competitors must write Chinese characters by hand. To prepare for the competition, the competitors usually spend months studying dictionaries.Perhaps the show's popularity should not be a surprise. Along with gunpowder and paper, many Chinese people consider the creation of Chinese calligraphy to be one of their primary contributions to civilization. Unfortunately, all over the country, Chinese people are forgetting how to write their own language without computerized help. Software on smartphones and computers allows users to type in the basic sound of the word using the Latin alphabet. The correct character is chosen from a list. The result? It's possible to recognize characters without remembering how to write them.But there's still hope for the paint brush. China's Education Ministry wants children to spend more time learning how to write.In one Beijing primary school we visited, students practice calligraphy every day inside a specially decorated classroom with traditional Chinese paintings hanging on the walls. Soft music plays as a group of six-year-olds dip brush pens into black ink. They look up at the blackboard often to study their teacher's examples before carefully attempting to reproduce those characters on rice paper. "If adults can survive without using handwriting, why bother to teach it now?" we ask the calligraphy teacher, Shen Bin. "The ability to write characters is part of Chinese tradition and culture," she reasons. "Students must learn now so they don't forget when they grow up," says the teacher.1. What can we learn about the Character Hero?A. It's the most-viewed TV program in China.B. It's open to people of all ages and all walksC. It draws great public attention across the country.D. It aims to spread Chinese culture to the world.2. Why are Chinese people forgetting how to write the characters?A. Because Chinese people are using the Latin alphabet instead of the characters.B. Because Chinese people no longer use brush pens or practice calligraphy.C. Because Chinese people needn't write by hand as often with the help of technology.D. Because Chinese people don't refer to dictionaries very often.3. According to Shen Bin, being able to write characters by hand is _______.A. helpful to keep Chinese tradition and culture aliveB. a requirement made by China's Education MinistryC. necessary for adults to survive in ChinaD. an ability to be developed only when you are students4. Where does this text probably come from?A. A science report.B. A news report.C. Children's literature.D. An advertisement.12、Languages have been coming and going for thousands of years, but in recent times there has been less coming and a lot more going. When the world was still populated by hunter-gatherers, small, tightly knit (联系) groups developed their own patterns of speech independent of each other. Some language experts believe that 10, 000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them.Soon afterwards, many of those people started settling down to become farmers, and their languages too became more settled and fewer in number. In recent centuries, trade, industrialisation, the development of the nation-state and the spread of universal compulsory education, especially globalisation and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English, Spanish and Chinese are increasingly taking over.At present, the world has about 6,800 languages. The distribution of these languages is hugely uneven. The general rule is that mild zones have relatively few languages, often spoken by many people, while hot, wet zones have lots, often spoken by small numbers. Europe has only around 200 languages; the Americas about 1,000 ; Africa 2, 400 ; and Asia and the Pacific perhaps 3,200, of which Papua New Guinea alone accounts for well over 800. The median number (中位数) of speakers is a mere 6,000,which means that half the world’s languages are spoken by fewer people than that.Already well over 400 of the total of 6, 800 languages are close to extinction (消亡),with only a few elderly speakers left. Pick, at random, Busuu in Cameroon (eight remaining speakers), Chiapaneco in Mexico (150), Lipan Apache in the United States (two or three) or Wadjigu in Australia (one, with a question-mark): none of these seems to have much chance of survival.1. What can we infer about languages in hunter-gatherer times?A. They developed very fast.B. They were large in number.C. They had similar patterns.D. They were closely connected.2. Which of the following best explains "dominant" underlined in paragraph 2?A. Complex.B. Advanced.C. Powerful.D. Modem.3. How many languages are spoken by less than 6,000 people at present?A. About 6, 800.B. About 3,400.C. About 2,400.D. About 1,200.13、Over 2,200 years ago, Emperor Qin Shi Huang, the first Emperor in Chinese history, established (建立) the official Chinese writing characters. The new, characters made writing calligraphy ①_________ (little)difficult. It allowed people to use characters with more straight strokes, thus ②________ (make) it easier to write with brushes. This ③_______ (create) the clerical script (隶书). Over time, other changes were also made, ④_________ eventually led to the formation of the five styles in Chinese calligraphy. As ⑤__________ result, calligraphy became ⑥________ (wide) accepted. Calligraphy also had its practical values because it was a good way to make friends and was more presentable as a gift rather than jewelry or money. Does calligraphy still have these practical functions now? Yes. Many people practice calligraphy as a way ⑦_________ (raise) their cultural accomplishment (成就). Older people use calligraphic writing as a method to keep fit. They believe that when a person concentrates on ⑧__________ (write) calligraphy, his inner happiness is inspired. I had thought computer would lead to the ⑨_________ (disappear) of Chinese calligraphy. Now I understand that’s not likely to happen. How can you give your boss computer-printed calligraphy as a gift? You don't, ⑩__________ you want him to fire you!答案以及解析1答案及解析:答案:been based解析:考查语态。
2022-2021学年上学期高一生物寒假作业 05 必修一第5章 细胞的能量供应和利用(解析版)
生物学科高一寒假作业(五)作业范围:必修一第5章细胞的能量供应和利用时间: 70分钟分值:100分第Ⅰ卷(共60分)一、选择题(说明:本卷共20小题,在每小题给出的四个选项中,只有一项是符合题目要求的。
每小题3分。
)1.叶肉细胞内的下列生理过程,肯定在生物膜上进行的是()A.H2O的产生 B.O2的生成 C.ATP的合成 D.[H]的消耗【来源】【百强校】2021届河北省衡水中学高三上第三次调研考生物A卷【答案】B【题型】选择题【难度】较易2.下列有关酶的探究试验的描述,正确的是()A.将温度由低温调至最适温度,酶的活性不变B.探究蛋白酶的专一性,可用双缩脲试剂进行检测C.肯定底物条件下,酶活性增加,最终产物的生成量增加D.较低的pH环境中,胃蛋白酶仍能保持活性【来源】【百强校】2021届河南省新乡市一中高三上9月考生物试卷【答案】D【解析】将温度由低温调至最适温度,酶的活性上升,A错误;蛋白酶的化学本质是蛋白质,不能用双缩脲试剂进行检测,B错误;肯定底物条件下,酶活性增加,反应速率加快,但是最终产物的生成量不变,C错误;胃蛋白酶的最适pH为1.5,D正确。
考点:探究酶的特性【题型】选择题【难度】较易3.下列试验中科学家使用的手段或技术显著不同于其它的是()A.科学家对分泌蛋白的合成和分泌的争辩B.鲁宾和卡门证明光合作用释放的氧气来自水C.恩格尔曼证明叶绿体是光合作用的场所D.卡尔文探明C02中的碳在光合作用中转化成有机物中碳的途径【来源】【百强校】2021届内蒙古临河区巴彦淖尔市一中高三9月考生物试卷【答案】C考点:光合作用的发觉史、分泌蛋白的合成与分泌过程【题型】选择题【难度】较易4.运动员处于安静状态和猛烈运动状态下的骨骼肌细胞,分解葡萄糖过程中产生的CO2摩尔数与消耗的O2摩尔数的比值分别为()A.1、小于1.0 B.1、大于1.0C.1、1 D.小于1.0、小于1.0【来源】【百强校】2021届河北省沧州一中高三上学期10.7周测生物A卷【答案】C【解析】人体细胞无氧呼吸的产物是乳酸,不产生二氧化碳。
人教版高中物理必修二高一寒假作业(5)
体仍运动时,物体受到的摩擦力为_______;当水平推力为15N而物体静止时,物体受到的摩擦力为_______;当水平推力为40N时,物体受到的摩擦力又为_______。
(g=10N/kg)7.用手握住绳的两端,在绳的中点悬挂一重物,改变两绳间的夹角θ,如果物体始终处于平稳状态(绳的拉力的合力始终等于重力),则当θ=_______时,绳中的拉力最小,当θ=_____时绳中的拉力等于重力,在θ角增大的过程中,绳中的拉力逐渐变_____。
8.在做《探究求合力的方法》的实验中,有下列一些实验步骤:A.把橡皮条的一端固定在A点,将两条细绳接在橡皮条的另一端B.记下两个弹簧秤的读数,描下橡皮条结点的位置OC.记下弹簧秤的读数,描下细绳的方向D.按同样的比例作出这个F′的图示E.只用一个弹簧秤通过细绳把橡皮条的结点拉到同样的位置OF.比较F′与用平行四边形定则求得的合力FG.在纸上按比例作出这两个力F1和F2的图示H.通过细绳用两个弹簧秤互成角度拉橡皮条,橡皮条伸长使结点到达某一位置O I.在桌上平放一块方木板,在木板上垫一张白纸,用图钉将纸固定在方木板上J.描下两条细绳的方向K.用平行四边形定则作出合力F将实验步骤的序号按正确次序排列______________________________。
9.两个共点力的夹角为90º时,它们的合力大小为10N,如果这两个力成某一角度θ时,它们的合力与其中的一个分力垂直,且大小为8N,求这两个力的大小。
高一物理寒假作业(5)参考答案1.【答案】A【解析】力的本质是物体对物体的作用,力不能离开物体而独立存在。
A正确,C错误。
力有接触力和场力两种,物体间不一定要接触,B错误。
力的大小可以用弹簧秤测量,天平是用来测量质量的仪器,D错误。
2.【答案】D【解析】重力是由地球的吸引而产生的,不管物体静止还是运动,也不管物体上升还是下落,地面附近同一物体的重力大小、方向都不会发生改变,重力的大小可由公式G =mg求出。
高一历史寒假作业(五)
高一历史寒假作业(五)一、选择题,每小题的四个选项中,只有一项符合题意。
1.明成祖时,“特简(选拔)解缙、胡广、杨荣等直文渊阁,参预机务。
阁臣之预机务自此始。
然其时,入内阁者皆编、检、讲读之官,不置官属,不得专制诸司。
……嘉靖以后,朝位班次,俱列六部之上。
”据此,对明代内阁的说法正确的是A.开辟了入仕做官的新途径B.自设立起即为法定决策机构C.六部逐渐成为内阁下属机构D.地位虽有变化但职能基本未变2.下图是秦与隋唐时期的中央官制示意图,比较两图最能说明的是A.唐代中央官吏日渐增多 B.唐代以分散相权而保障君权C.唐代尚书省权力最大 D.太尉与御史大夫的权力分别下放到兵部与吏部3.在古代雅典伯里克利时期,所有年龄在30岁以上的男性公民都有资格在陪审法庭供职。
刻着每个民选审判官名字的小铭牌,被塞进一个抽签装置里,这个装置能够随机分配每天的陪审员。
以下对该制度设计的理解,不正确的是A.保证审判的公正性 B.激发公民参政积极性C.一定程度限定陪审员资格 D.确保公民参政时间4.比较下列两幅图,两种制度的最本质区别在于A.左图反映了中国的民主,右图反映了美国的民主B.左图反映了封建社会的民主,右图反映了资本主义社会的民主C.左图反映了封建君主专制,右图反映了资产阶级民主政治D.左图的官员都是任命的,右图的官员都是民选的5.近代以来,欧美各国或通过资产阶级革命,或通过王朝战争确立了资产阶级代议制。
学习了“政治文明历程”模块中的《近代西方资本主义政体的确立》后,你认为下列说法正确的是A.英国首相不经选举产生,而是由议会少数党领袖担任B.美国总统由选举产生,并且权力不受任何机构的制约C.法国总统由两院联合组成的议会以绝对多数票选出D.德意志帝国首相主持帝国政府,对议会负责不对皇帝负责6.1917年列宁发表了著名的《四月提纲》,为布尔什维克党制订策略。
这个文件在刚提出时,并没有被全党立即接受,但很快被广大人民群众所接受。
高一鲁教版化学寒假作业5
鲁版高一寒假作业五1.能用H++OH-=H2O来表示的化学反应是A.氢氧化镁和稀盐酸反应B.Ba(OH)2溶液滴入稀硫酸中C.澄清石灰水和稀硝酸反应D.二氧化碳通入澄清石灰水中2.下列反应中必须加入还原剂才能进行的是A.Cl2→Cl-B.Zn→ Zn2+C.H2→H2O D.CuO→CuCl23.将饱和FeCl3溶液分别滴入下列液体中,能形成胶体的是()A.冷水B.沸水C.NaOH溶液D.NaCl溶液4.某溶液中只含有Na+、Al3+、Cl-、SO42-四种离子,已知前三种离子的个数比为3∶2∶1,则溶液中Al3+和SO42-的离子个数比为A.1∶2 B.1∶4 C.3∶4 D.3∶25.对溶液中的离子反应,下列说法:①不可能是氧化还原反应;②只能是复分解反应;③可能是置换反应;④不能有分子参加。
其中正确的是A.①③B.③C.①②D.③④6.下列物质中,不属于...合金的是A.硬铝B.黄铜C.钢铁D.金箔7.下列物质中既能跟稀H2SO4反应, 又能跟氢氧化钠溶液反应的是①NaHCO3②Al2O3③Al(OH)3④AlA.③④B.②③④C.①③④D.全部8.将Fe、Cu、Fe2+、Fe3+和Cu2+盛于同一容器中充分反应,如Fe有剩余,则容器中只能有A.Cu、Fe3+B.Fe2+、Fe3+C.Cu、Cu2+、Fe D.Cu、Fe2+、Fe9.下列应用或事实与胶体的性质没有关系的是()A.用明矾净化饮用水B.用石膏或盐卤点制豆腐C.在FeCl3溶液中滴加NaOH溶液出现红褐色沉淀D.清晨的阳光穿过茂密的林木枝叶所产生的美丽景象(美丽的光线)10.下列分散系最稳定的是()A.悬浊液B.乳浊液C.胶体D.溶液二、简答题:11.已知NaCl中混有Na2CO3固体,请用简要的语言说明除去Na2CO3的方法,并写出有关的反应化学方程式。
三、推断12.由A和B两种盐组成的混合物,进行了下列实验:(6分)试判断,A、B分别是。
高一化学寒假作业5
假期作业5相对原子质量:Na 23 Al 27 Fe 56 O 16 N14 Cl 35.5一、选择题:(本题包括27小题,,共 54 分。
每题2分)1.由Zn,Fe,Al,Mg四种金属中的两种组成的混合物10g,与足量的盐酸反应产生的氢气在标况下为11.2升,则混合物中一定含有的金属是A.Zn B.Fe C. Al D.Mg2.下列各组溶液,不另加其他试剂就可以将它们分别开的是A.NaCl, HCl, NaAlO2, NaHCO3 B.NaSO4, KNO3,(NH4)2SO4,MgCl2C.FeCl3, NaOH, AlCl3, HNO3 D.AgNO3, NaCl, NaSO4, NaI3.钠与水反应的现象和钠的下列性质无关的是A.钠的熔点较低 B.钠的密度小于水 C.钠的硬度较小D.钠的还原性强4.下列灭火剂能用于扑灭金属钠着火的是A.干冰灭火剂 B.黄沙C.干粉灭火剂 D.泡沫灭火剂5.证明某溶液只含有Fe2+而不含有Fe3+的实验方法是()A.先滴加氯水,再滴加KSCN溶液后显红色B.先滴加KSCN溶液,不显红色,再滴加氯水后显红色C.滴加NaOH溶液,先产生白色沉淀,后变灰绿,最后呈红褐色D.只需滴加KSCN溶液6.在含有1molFeSO4的溶液中投入一小块金属钠,反应完全后,滤出沉淀并洗涤之,然后在空气中灼烧沉淀得到的固体物质是()A.Fe B.FeO C.Fe(OH)3 D.Fe2O36.某无色溶液能与镁反应放出氢气,此溶液中可能大量共存的离子组是A.H+, Ba2+, Mg2+, Cl-B.K+, Cl-, SO42-, AlO2-C.K+, OH-, SO32-, MnO4- D.Ca2+, H+, Cl-, NO3-7.取两份铝片,第一份与足量盐酸反应,第二份与足量烧碱溶液反应,同温同压下放出相同体积的气体,则两份铝片的质量之比为A.1:1 B.2:3 C.3:2 D.1:68.将铜片投入到稀硫酸中,铜片不溶,加入下列试剂后,可使铜片溶解的是A.稀盐酸B.硫酸钠晶体C.硝酸钠晶体D.氯化铁晶体9.镁、铝、铜三种金属粉末混合物, 加入过量盐酸充分反应, 过滤后向滤液中加入过量烧碱溶液, 再过滤, 滤液中存在的离子有A.AlO2-B.Cu2+C.Al3+D.Mg2+10.Na2O2与水反应能够产生O2,这一反应在呼吸面具、潜水艇及太空飞船中可为人体提供呼吸所用的O2。
高一寒假作业五参考答案
高一寒假作业五参考答案
一、1. B(A项,粘贴/沾沾自喜;C项,伛偻/衣衫褴褛;D项,泄露/公开露面,读音相同)
2.A(A项,“平易近人”既指态度谦虚和蔼,使人容易接近,又指(文字)浅显,容易了解。
B项,“脱颖而出”比喻人的才能全部显示出来。
使用对象有误。
C项,“特立独行”指有操守,有见识,不随波逐流。
不合语境。
D项,“春意阑珊”指春天就要过去了。
阑珊:将尽,将衰。
前后矛盾。
)
3.C(A项搭配不当(主宾不当),句子主干成了“李俊被逮捕成为大案”。
B项成分残缺,造成句意不明,“以便”后应补上“社会车辆”一类词语;D项句式杂糅,删掉“的原因”。
)
4. C(A山清水秀 B焕然一新 D再接再厉)
二、 (1)不扶而直/白沙在涅
(2)君子以自强不息/君子以厚德载物
(3)佳木秀而繁阴/水落而石出者
(4)侣鱼虾而友麋鹿
(5)和者必寡/其实难副
三、
5.(6分)①文章开宗明义,提出观点:鲁迅对《水浒传》是肯定的(2分),②接着,举例论证鲁迅对《水浒传》的介绍是认真负责的,③然后,论述了鲁迅对《水浒传》的思想内容是肯定的,④最后,说明了“鲁迅正确阐明《水浒传》能够在中国民间盛行的社会原因”。
(每点1分,答出三点得4分)
6.(6分)①费心地研究《水浒传》的各种版本(3分);②下了很大的功夫去寻找《水浒图》(3分)。
7.(6分)①《水浒传》中可以体现中国社会有水浒气;(2分)②《水浒传》有一定的历史价值;(2分)③《水浒传》在鲁迅所生活的时代也还有着一定的社会价值和现实意义。
(2分)。
【名师原创 全国通用】2014-2015学年高一寒假作业 化学(五) Word版含答案
【原创】高一化学寒假作业(五)一.选择题(共7小题,每个小题只有一个正确选项)3.下列溶液中Cl﹣浓度由大到小的顺序是()①200mL 2mol/L MgCl2溶液②1000mL 2.5mol/L NaCl溶液③300mL 5mol/L KClO3溶液7.下列过程或事实涉及氧化还原反应的是()①蔗糖炭化②用氢氟酸雕刻玻璃③铁遇冷的浓硫酸钝化④装碱液的试剂瓶不用玻璃塞⑤雷雨发庄稼⑥实际使用的浓硝酸显黄色.二.填空题(共3小题)8.(1)新切开的金属钠,切面呈_________色,在空气中很快变暗,有关的化学方程式是_________.(2)将小块金属钠投入盛有水的烧杯里,钠熔化成闪亮的小球,说明_________.(3)因此,钠通常保存在_________中,钠元素在自然界存在的形态为_________.(4)过氧化钠可用作于供氧剂,写出过氧化钠与二氧化碳反应的化学方程式_________.9.下列框图中的字母分别代表一种常见的物质或其溶液,相互之间的转化关系如下图所示(部分产物及反应条件已略去).已知A、B为气态单质,F是地壳中含量最多的金属元素的单质;E、H、I为氧化物,E为黑色固体,I为红棕色气体;M为红褐色沉淀.请回答下列问题:(1)B中所含元素位于周期表中第_________周期,_________族.(2)A在B中燃烧的现象是_________.(3)D+E→B的反应中,被氧化与被还原的物质的物质的量比是_________.(4)G+J→M的离子方程式是_________.(5)Y受热分解的化学方程式是_________.10.某化学兴趣小组的同学进行Cl2、NH3的制备及性质检验等实验的流程和部分装置如图:①利用A、G装置设计一个简单的实验验证Cl2、Fe3+、I2的氧化性强弱为Cl2>Fe3+>I2(实验中不断地小心振荡G装置中的试管).请写出A中发生反应的离子方程式_________,试剂M为_________溶液,证明氧化性为Cl2>Fe3+>I2的实验现象是_________.②已知3Cl2+2NH3═6HCl+N2,当D的烧瓶中充满黄绿色气体后,关闭a、c打开b,D中的现象为_________,反应一段时间后,关闭b打开c,观察到的现象为_________.参考答案一选择题32Fe。
高一物理寒假作业5
物理(60分钟)腊月廿三上午相互作用11.下列力的说法中正确的是()A.力是物体对物体的作用,所以只有直接接触的物体间才有力的作用。
B.由有一定距离的磁铁间有相互作用力可知,力可以离开物体而独立存在。
C.力是使物体发生形变和改变物体运动状态的原因。
D.力的大小可以用天平测量。
2.关于重力的说法中正确的是()A.在落向地球时,物体受的重力大于它静止时受的重力。
B.因重力的方向总是竖直向下的,故重力一定和地面垂直。
C.重力就是物体对水平桌面的压力。
D.一个物体不论是静止还是运动,也不论是怎么运动,受到的重力都是一样。
3.下列关于重心的说法正确的是()A.重心是物体的各部分所受重力的合力的作用点。
B.密度均匀形状规则的物体的重心必与其几何中心重合。
C.重心是物体上最重的一点。
D.直铁丝被弯曲后,重心便不在中点,但一定还在铁丝上。
4.下列说法中正确的是()A.有弹力必定有摩擦力,有摩擦力必定有弹力。
B.轻杆不同于轻绳,弹力的方向可以不在杆的直线方向上。
C.摩擦力的大小一定与物体所受的重力大小成比。
D.摩擦力的方向总是与运动方向相反,起阻碍物体运动的作用5.一根绳子能承受的最大拉力是G,现把一重力为G的物体拴在绳的中点,两手靠拢分别握绳的两端,然后漫漫地向左右两边分开,当绳断时两段绳间夹角应稍大于()A. 30°B. 60°C. 90°D. 120°6.用手握住瓶子,使瓶子在竖直方向静止,如果握力加倍,则手对瓶子的摩擦力()A.握力越大,摩擦力越大。
B.只要瓶子不动,摩擦力大小与前面的因素无关。
C.方向由向下变成向上。
D.手越干越粗糙,摩擦力越大。
7.如图所示,物体A与B相对静止,共同沿斜面C匀速下滑,则()A.A、B间无静摩擦力B.B受滑动摩擦力,大小为agmBsinC.B与斜面间的动摩擦因数au tan=D.斜面受B施加的滑动摩擦力的作用,方向沿斜面向下8.物体受三个共点力321FFF的共同作用,这三个力的大小是下列四组中哪些组时,这三个力的合力可能为零?()A.NF51=NF102=NF243=B.NF111=NF252=NF403=C.NF71=NF312=NF353=D.NF1001=NF752=NF243=9.关于分力和合力,以下说法不正确...的是()A.合力的大小,小于任何一个分力是可能的B.如果一个力的作用效果其它几个力的效果相同,则这个力就是其它几个力的合力C.合力的大小一定大于任何一个分力D.合力可能是几个力的代数和10.如图所示,在《探究求合力的方法》这一实验中,两弹簧秤现在的夹角为90º,使b弹簧秤从图示位置开始沿箭头方向缓慢转动,在这过程中,保持O点的位置和a弹簧秤的拉伸方向不变,则在整个过程中,关于a、b两弹簧秤示数的变化情况是()A.a示数增大,b示数减小B.a示数减小,b示数增大C.a示数减小,b示数先增大后减小D.a示数减小,b示数先减小后增大abOP6011.两个共点力的夹角为90º时,它们的合力大小,如果这两个力成某一角度θ时,它们的合力与其中的一个分力垂直,且大小为,求这两个力的大小。
高一年级(必修一、二)寒假作业5Word版含答案
高一年级(必修一、二)寒假作业5一、 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.下列说法正确的是 A. 0与{}0的意义相同 B. 高一(1)班个子比较高的同学可以形成一个集合 C. 集合{}()32A x y x y x N =+=∈,,是有限集 D. 方程0122=++x x 的解集只有一个元素2. 若0m >,0n >,0a >且1a ≠,则下列等式中正确的是( ) A .()m nm na a+= B .11mm aa=C .log log log ()a a a m n m n ÷=-D 43()mn = 3.下列图形中,表示函数图象的个数是A .1个B .2个C .3个D .4个4.某商品价格前两年每年提高10%,后两年每年降低10%,则四年后的价格与原来价格比较,变化的情况是 ( )A .减少1.99%B .增加1.99%C .减少4%D .不增不减 5.如图,当参数12,λλλ=时,连续函数(0)1xy x xλ=≥+ 的图像分别对应曲线1C 和2C , 则 ( ) A. 210λλ<< B. 210λλ<< C. 120λλ<< D. 120λλ<<6.18.设()f x 是定义在R 上的函数,且对任意,x y R ∈,均有()()()2014f x y f x f y +=++成立,若函数()()20132014g x f x x =+有最大值M 和最小值m ,则M m + =( ) A .-4028 B .-2014 C .2014 D .4028 7.已知1()1xf x x -=+,则f (x )的表达式为 A .11x x -+ B .11x x +- C . 11x x -+ D .21x x -8. 关于x 的方程a a x 232+=,在(1]-∞,上有解,则实数a 的取值范围是 A .[)(]1,01,2 -- B.[)[]1,02,3 -- C .[)(]1,02,3 -- D .[)[]1,01,2 --9.已知直线l :x +ay -1=0(a ∈R)是圆C :x 2+y 2-4x -2y +1=0的对称轴.过点A (-4,a )作圆C 的一条切线,切点为B ,则|AB |=( )A .2B .4 2C .6D .21010.设()f x 是R 上的偶函数,且在(0,+∞)上为增函数,若10x >,且120x x +<,则 A. 12()()f x f x >B. 12()()f x f x <C. 12()()f x f x =D.无法比较1()f x 与2()f x 的大小11. 三棱锥P ABC -的高为PH ,若三个侧面两两垂直,则H 一定为△ABC 的( ) A .垂心 B .外心 C.内心 D .重心12.有四根长都为2的直铁条,若再选两根长都为a 的直铁条,使这六根铁条端点处相连能够焊接成一个三棱锥形的铁架,则a 的取值范围是( )A .(0,6+2)B .(1,22)C .(6-2,6+2)D .(0,22)二、填空题:本大题共4小题,每小题5分,共20分.13. 已知集合{,},{1,01}P a b Q ==-,,则从集合P 到集合Q 的映射共有 种. 14.已知函数2()2([1,2])f x x x x =-∈-的值域为集合A ,()2[1,2]g x ax x =+∈-()的值域为集合B .若A B ⊆,则实数a 的取值范围是 .15. 设动点P 在棱长为1的正方体ABCD -A 1B 1C 1D 1的对角线BD 1上,记11D PD B=λ.当∠APC 为钝角时,λ的取值范围是________.16.如图,在透明塑料制成的长方体1111D C B A ABCD -容器内灌进一些水,将容器底面一边BC 固定于地面上,再将容器倾斜,随着倾斜度的不同,有下列四个说法:①水的部分始终呈棱柱状;②水面四边形EFGH 的面积不改变;③棱11DA 始终与水面EFGH 平行;④当1AA E ∈时,BF AE +是定值.其中正确说法是 .三、解答题:本大题共6小题,共70分,解答应写出文字说明,证明过程或演算步骤.已知全集为实数集R ,集合}31|{x x y x A -+-==,{|24}x B x =>.(I)分别求,,()R A B A B B A ;ð(II)已知集合}1|{a x x C <<=,若A C ⊆,求实数a 的取值范围.18.(本小题满分12分)已知1,0()2,0x f x x <⎧=⎨≥⎩,3(1)(2)()2f x f x g x ---=.(1)当12()x g x ≤<时,求;(2)当()x R g x ∈时,求的解析式,并画出其图象;[来(3)求方程[()]2[()]f g x x g f x =的解.19.(本小题满分12分)如图,三棱柱ABC -A1B 1C 1中,AA 1⊥BC ,A 1B ⊥BB 1. (1)求证:A 1C ⊥CC 1;(2)若AB =2,AC =3,BC =7,问AA 1为何值时,三棱柱ABC -A 1B 1C 1体积最大,并求此最大值.20.(本小题满分12分)已知函数2211)(x x x f +-=. (I)判断)(x f 的奇偶性; (II)求证:)1()(x f x f +为定值; (III )求111()()()(1)(2015)(2016)(2017)201720162015f f f f f f f ++++++的值.我国的烟花名目繁多,花色品种繁杂.其中“菊花”烟花是最壮观的烟花之一,制造时一般是期望在它达到最高点时爆裂,通过研究,发现该型烟花爆裂时距地面的高度h (单位:米)与时间t (单位:秒)存在函数关系,并得到相关数据如下表:(I)根据上表数据,从下列函数中,选取一个函数描述该型烟花爆裂时距地面的高度h 与时间t 的变化关系:,b kt y +=122y at bt c =++,3t y ab =,确定此函数解析式,并简单说明理由; (II)利用你选取的函数,判断烟花爆裂的最佳时刻,并求出此时烟花距地面的高度. 22.(本题满分12分) 已知实数x,y 满足关系式2264120x y x y +--+=,点P(x,y),A(-1,0),,B(1,0). (1) 求yx的最大值和最小值 (2) 求x-y 的最大值和最小值 (3) 求22PA PB +的最大值和最小值高一年级(必修一、二)寒假作业5参考答案一、选择题 (本大题共12小题,每小题5分,共60分.)1-5 DDBAD 6-10 AACCB 11-12 AA 二、填空题(本大题共4个小题,每小题5分,共20分.)13. 9 14.][3,)∞+∞ 3(-,-2 15. (13,1) 16.①③④ 三、解答题:本大题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.17.(本小题满分10分)解:(I)}31|{≤≤=x x A ,}2|{}42|{>=>=x x x B x}1|{≥=⋃x x B A}32|{≤<=⋂x x B A(){|2}{|13}{|3}R C B A x x x x x x ⋃=≤⋃≤≤=≤(Ⅱ)①当1≤a 时,φ=C ,此时A C ⊆;②1>a 时,A C ⊆,则31≤<a综合①②,可得a 的取值范围是]3,(-∞……………10分 18. (本小题满分12分)解:(1) 当1≤x<2时,x-1≥0,x-2<0,∴g(x)=216-=25. (2)当x<1时,x-1<0,x-2<0,∴g(x)=213- =1. 当x ≥2时,x-1>0,x-2≥0,∴g(x)= 226-=2.故1,1,5(),12,22, 2.x y g x x x <⎧⎪⎪==≤<⎨⎪≥⎪⎩ 其图象如右图.(3)()0[()]2,g x f g x x R >∴=∈ 5(1),0[()],2(2)2,0g x g f x g x ⎧=<⎪=⎨⎪=≥⎩所以,方程[()]2[()]f g x x g f x = 为 25,0,4,0x x x <⎧=⎨≥⎩所以x=x=2.19.(本小题满分12分)解:(1)证明 由AA 1⊥BC ,知BB 1⊥BC .又BB 1⊥A 1B ,BC ⊂平面BCA 1,A 1B ⊂平面BCA 1, 故BB 1⊥平面BCA 1,所以BB 1⊥A 1C . 又BB 1∥CC 1,所以A 1C ⊥CC 1.(2)如图所示,过A 1作BC 的垂线,垂足为D ,连接AD . 由AA 1⊥BC ,A 1D ⊥BC ,故BC ⊥平面AA 1D ,BC ⊥AD . 又AB =2,AC =3,BC =7,所以AB 2+AC 2=BC 2,故∠BAC =90°,所以S △ABC =12AD ·BC =12AB ·AC ,所以AD =2217.设AA 1=x ,在Rt△AA 1D 中,A 1D =AD 2-AA 21=127-x 2,S △A 1BC =12A 1D ·BC =12-7x 22. 从而三棱柱ABC -A 1B 1C 1的体积V =S 直·l =S △A 1BC ·AA 1=x 12-7x 22.因为x 12-7x 2=12x 2-7x 4=-7 x 2-67 2+367,故当x =67=427, 即AA 1=427时,体积V 取到最大值377. 20. (本小题满分12分)解:(I))(x f 的定义域R ,所以定义域关于原点对称. …………1分又)(11)(1)(1)-(2222x f x x x x x f =+-=-+--=, ……… ………3分∴)(x f 是偶函数 ……… .…………4分(Ⅱ)∵)(111111)1(1)1(1)1(22222x f x x x x x x x f -=+-=+-=+-=, ………………6分∴0)1()(=+xf x f 为定值. …………………8分(III ) 由(II )知原式111[()(2017)][()(2016)][()(2015)](1)201720162015f f f f f f f =++++++++…………………………10分0)1(0=+=f . ……………… …………12分 21.(本小题满分12分)解:(I)由表中数据分析可知,烟花距地面的高度随时间的变化呈先上升再下降的趋势,则在给定的三类函数中,只有2y 可能满足,故选择取该函数. …………3分设,)(2c bt at t h ++=有11104422542,20.171641a b c a a b c b a b c c ⎧=++⎪=-⎧⎪⎪=++⇒=⎨⎨⎪⎪=++=⎩⎪⎩…………6分所以,01204)(2)(≥++-=t t t t h ……………8分(Ⅱ)26)25(41)5(41204)(222+--=+--=++-=t t t t t t h , …………10分∴当烟花冲出后2.5s 是爆裂的最佳时刻,此时距地面的高度为26米. …………12分 22(本题满分12分)根据题意,设圆心22:(x 3)(2)1C y -+-=圆心C(3,2)设y k x =,则当直线y=kx 与圆C 相切时,y x取的最小值。
寒假作业(五)-2021-2022学年高一地理湘教版必修一
湘教版(2019)必修一高一寒假作业(五)(30个选择题、五个大题)作业范围:湘教版(2019)必修一作业时间:寒假一、选择题:(在每小题给出的四个选项中,只有一项是符合题目要求的。
).在德国和日本,随处可见厂房和大楼屋顶的黑色“硅极”,这就是太阳能屋顶。
风和日丽的白天,“屋顶”将太阳能转化为电能,把富余的电能送入电网。
我国有关专家指出:上海没有油田和煤矿,但有两亿平方米的屋顶,不能辜负了屋顶上这片免费的阳光。
据此完成下列小题。
1.上海的年平均太阳辐射量高于德国和日本,是因为( )A.地势高,空气稀薄B.河湖纵横,太阳有效辐射强C.地面裸露,比热容大D.纬度偏低,晴天多2.上海积极推广“太阳能屋顶计划”是因为( )A.常规能源短缺,能源需求量大B.其是我国太阳能资源最丰富的地区C.太阳能资源清洁、可再生、能量集中D.上海人口稠密,经济发达,能源蕴藏量大欧洲研究小组推测2030-2040年太阳活动将减少,太阳活动减少将导致太阳黑子和太阳耀斑减少60%,太阳进入休眠状态。
读太阳结构示意图,完成下列小题。
3.太阳耀斑和黑子分别位于图中( )A①② B.②③C③② D.②①4.太阳活动( )①发生在太阳大气层②可能引起地球上发生水旱灾害③发生在太阳内部④对人类生产生活不会产生影响A①②B②③ C.③④ D.①④读部分地质时期的生物演化过程示意图,完成下列小题。
5.关于甲、乙两地质年代,下列说法正确的是()A.甲是古生代,乙是中生代B.甲是中生代,乙是古生代C.甲是古生代,乙是元古宙D.甲是新生代,乙是古生代6下列化石可能出现于古生代地层的是()①三叶虫化石②恐龙化石③龟类化石④被子植物化石A.①②B. ①③C.②④D.③④读某地貌剖面示意图,完成下列小题。
7.由图可知( )A.该地貌属于流水侵蚀地貌B.由扇形地上部到扇缘带,沉积物颗粒逐渐变大C.扇形地中下部土壤肥沃,排水条件良好,适合农耕D.扇缘带地下水埋藏深8.该地貌最可能形成于( )A.河流入海口B.山间河谷出口C.大江大河中下游D.盆地中心沙漠治理是干旱区的重要课题,传统工程治沙主要是利用人工设置沙障(如草方格)来防止沙子移动。
河北省武邑中学2018-2019学年高一上学期英语寒假作业5
河北武邑中学2018-2019学年高一寒假作业英语学科(第5期)命制人:郑陆浩审查人:魏军霞班级_________ 学生姓名__________ 家长签字________________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中中选出最佳选项,并在答题卡上将该项涂黑。
ABelgium is the land of music festivals. There are rock, pop, world, electronic music festivals and more, so you’re sure to find a festival that suits your taste.GroezrockGroezrock could be considered the opener of the festival season in Belgium. This festival grew from a small event to an international festival that had 33,000 visitors in 2016.If you’re into the harder thing, this is where you need to go.When? April 29-30, 2017. Where? Meerhout. Music? Punk, and rock are what it contains. Free? No.Sfinks MixedSfinks is a world music festival working on bringing culture together. There are also plenty of things to do besides watching the performances(表演). Good to know for families: Sfinks is a kid-friendly festival, with workshops, storytelling and shows aimed at children.When? July 27-30, 2017. Where? Boechout. Music? World. Free? The festival rather than the camping is free.Graspop Metal MeetingIf Groezrock doesn’t seem wild enough to you, Graspop Metal Meeting might. As the name says, this festival is all about metal, rock and punk. In 2016 the festival received 140,000 visitors coming to watch the more than 100 bands performing.When? June 16-18, 2017. Where? Dessel. Music? Metal. Free? No.Genk on StageGenk on Stage is a pop musical with not only a lot of Belgian artists. 80,000 people attended Genk on Stage in 2016.When? June 23-25, 2017. Where? Genk. Music? Pop. Free? Yes.1 Which may start the festival season in Belgium?A.Groezrock.B. Sfinks Mixed.C. Graspop Metal Meeting.D. Genk on Stage.2. What do we know about Sfinks Mixed?A.It enjoys worldwide popularity.B. It’s mainly intended forkids.C.It mixed fun with culture.D. The camping there is free.3. Where are crazy metal music enthusiasts’ most likely to go?A.Meerhout.B. Boechout.C. Dessel.D. GenkBHow many times have we expressed how rude young people are for texting while having a conversation? They try to fix eyes on their smartphone screen while nodding. What goes through your mind is “how rude they are!”Have we forgotten some of the old school manners that our parents, grandparents, and teachers taught us – manners that have nothing to do with a mobile device or iPad, but everything to do with long-forgotten Golden Rules we were raised with?When I was growing up, there was etiquette(礼仪) to coughing. When coughing, we were told to turn our head away and block off our mouth. This might sound amusing to many young people. But if we didn’t follow these etiquettes, we would get a quick reminder(提醒) to the back of our head. When we were given something, and forgot to say “thank you”, elders would seriously remind us, “aren’t you forgetting to say something”, which was immediately followed by a “thank you”.Maybe technology has affected our brains so much that we can never go back to those golden days we like. It seems as if we have thrown out manners and etiquette with the bathwater. Simple etiquette is missing in society. A thank-you-note for a gift you have received all fall into the same box of manners. People are just cold these days because we are on the run every day in the world.In the work environment have you ever come across a sign: “Your mother doesn’t work here, clean up by yourself”? We often hear people say, the younger generation have no manners. I think people in general irrespective(无关的)of age have lost theirmanners. We’ve allowed bad manners to go unchecked. We simply stand bad behavior.In a world of more good manners, less closing of doors in our faces, more space given, and more “thank you” or “please” exch anged, our younger generation will have an improved quality of life.4.What is the purpose of the first paragraph?A.To point out young people’s bad manners.B.To introduce the main topics of the text.C.To stress the importance of cell phone.D.To explain the effect of cell phones on people.5.In the passage, Golden Rules refer to_______.A.modern family mannersB. rules observed at schoolC.rules everyone has to followD. etiquette started by oldergeneration6.Based on the passage, when one person coughs, blocking off his mouth, __________.A.the younger person will feel it necessaryB.the younger person will feel it funnyC.the older people will think little of himD.the older people will teach him a lesson7.According to the author, young people have no manners mainly because of ______________.A.the parents and teachers’ improper act and attitudeB. the fast developedtechnologyC. the people’s attitude towards running awayD. the busy lifestylespeople have第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
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2016年昆山市高中寒假自主学习材料
高一语文(5)
练习时间:2015.1.30
学生姓名
家长签名
1. C【①“正是江南好风景,落花时节又逢君”,“好风景”的“江南”是乐景,二人相逢是乐情,故不属于“以乐景写哀情”;“江头宫殿锁千门,细柳新蒲为谁绿”,“细柳新蒲”是充满生机的乐景,“为谁绿”指无人欣赏,“宫殿锁千门”指人烟荒芜,抒发的是哀情,此二句是“以乐景写哀情”。
②“气氛”指一定环境中给人某种强烈感觉的精神表现或景象;“氛围”指周围的气氛和强调。
“氛围”的范围大于“气氛”,跟前面的“环境”一词更搭配。
③.“两全其美”指做一件事顾全两个方面,使两方面都很好;“一举两得”指做一件事得到两种收获。
前者强调“美”,后者强调“得”,“得”更符合语境。
】
2.C解析:A讥诮(qiào) B不屈不挠(náo)D慰藉(jiè)
3.B 豁然开朗:豁然:形容开阔;开朗:开阔明亮。
从黑暗狭窄变得宽敞明亮。
比喻突然领悟了一个道理。
安之若素:表示对反常现象或不顺利的情况视若平常,毫不在意。
现也指对错误言论或事物不闻不问,听之任之。
视而不见:指不注意,不重视,睁着眼却没看见。
也指不理睬,看见了当作没看见。
祸起萧墙:萧墙:古代宫室内当门的小墙。
指祸乱发生在家里。
比喻内部发生祸乱。
4.B(A“达4万多公顷”表达不合逻辑;C宾语残缺,在“情况”后应有“方式”“手段”等词语与“采用”搭配;
D 项中“必须从解决人民群众关心关注的问题作为改革重点”中“从”改成“把”)
5.D 《过秦论》应为《六国论》
6.【解析】D(醒来)
7.【解析】C 正确,“之”的用法都是取消句子独立性。
其隙也:那。
其皆出于此乎:大概。
觉而起:表承接。
君子博学而日参省乎己:表递进。
游于是乎始:句中语气词。
其闻道也固先乎吾:相当“于”,比。
8.【解析】 B “施施”“漫漫”与两个“则”表现的是作者被贬官后“恒惴栗”,精神苦闷而无所排遣的状态。
9.(1)【解析】认为凡是这个州的山水有奇异姿态的,都为我所拥有、欣赏了,但未曾知道西山的怪异独特. (2)【解析】深青的夜色,从远处而来,直到什么都看不见了,还是不想回家。
10.略
11.(4分)
不一样:“两颊上已经消失了血色,”“眼光也没有先前那样精神了”。
(1分)——健康状态和精神面貌与前一次不一样了。
(1分)身份不一样了,是嫁了第二次后,丈夫又死了,儿子也死了,再次守寡。
(1分)
还一样:一样的穿着打扮,一样的驯顺的态度。
(1分)酌情给分。
12.(4分)
四婶:被祥林嫂悲惨的遭遇所感染,流露出一种本能的同情。
(1分)
王熙凤:为了讨好贾母,是在演戏。
(1分)
四婶:既有一点本能的同情心,更有自私的心理。
(1分)
王熙凤:矫揉造作,故作姿态。
(1分)
13.(4分)
祥林嫂:农村妇女的朴实、善良,看似平静的叙述背后是失去爱子的巨大悲痛。
(2分)
王熙凤:老到,八面玲珑,机变逢迎,善于察言观色。
(2分)
14.(4分)
①行动上的“小心”:听到“我来迟了,不曾迎接远客!”林黛玉心里觉得那人“放诞无礼”,只是不说,见了面还是连忙起身迎接。
(2分)
②称呼上也非常“小心”:外祖母说,“你只叫他‘凤辣子’就是了。
”她知道外祖母可以开玩笑,自己可随便不得,待她明白过来,“忙陪笑见礼,以‘嫂’呼之。
”不敢有丝毫马虎。
(2分)
15.B理解全面给3分,E ,理解准确,和主旨关系密切,给2分,A项正确,但过于直白浅显,给1分,C项“喜欢从菜市选料如萝卜、黄瓜、鱼翅类”错,D项“他的画是雅致的,其创意似不多见”与原文不符。
)
16.(6分)①“乐而不淫,哀而不伤”是说快乐和悲伤都要有节制,不要走向两个极端。
②既有高雅的趣味,又有与世俗亲近的真诚。
③写诗为文抒情有节制,不刻画大奸大恶,更不以污秽的东西入文,保持一种高尚的矜持。
(每答对一点给2分,意思答对即可)
17.①文章将汪曾祺与袁枚比,是要比出二人的同中之异:袁枚讥讽为世人所艳称的“燕窝、海参”为“虚名之士”,汪曾祺把“鱼翅”轻轻抛在一边,两者如出一辙,然而汪曾祺对家常小菜的喜欢才是真喜欢。
②与陶渊明和苏轼比,是要比出异中之同:他们身上的一个共同点,即“士大夫的趣味,平民的情怀”。
陶、苏的风雅自不消说,他们与世俗的亲近也是真诚的。
汪曾祺继承的,正是陶渊明和苏东坡的余韵。
(6分每答出一点给3分,意思对即可。
)
18.8分):观点明确,给1分;论述合理、理由充分,给4分;联系现实谈看法3分)文中写汪曾祺先生的雅:有“不喜‘大菜’,只喜‘小菜’这样的文人故习”;作画是‘写意’,大体还是传统文人画的路子。
(1分)他的俗:喜欢的小菜都是家常物什,喜欢画的对象完全的生活化平民化。
(1分)写他的“俗”,其实是写他对世俗生活的本真热爱,同时又突出了他不同于一般文人的“雅”。
亦俗亦雅,相得益彰,写出了如陶渊明、苏轼一样既耿介清高,又让平民可亲可感的汪老形象。
(2分)。