2016.11.27第13周每日一题及答案
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高三英语周练(unit13)一、英语知识应用:( )1. The CCTV has been broadcasting English programmes ever since 1997, many of which _____.A. are well receivedB. well received C .is well received D. are well accepted( )2. _____ that she did not study, she did well on the test.A. ConsideredB. ConsideringC. Being consideredD. Having been considered ( )3. All things_____, we’re doing quite well.A. considerB. being consideredC. consideringD. considered( )4. The chemist made a mistake when ______ the prescription.A. making upB. made upC. filledD. being filled( )5. The film “A World Without Thieves”,_______ the experiences of a young migrant worker,drew large audiences.A. being set inB. was set inC. having set inD. set in( )6. ______ that his story is true, what should we do?A. AssumeB. AssumedC. AssumingD. Being assumed( )7.Allow children the space to voice their opinions, they are different from your own.A.until B.even if C.unless D.as though( )8.Franklin’s move to quit smoking cigars to ______ her is seen by the servants as evidence______ he is in love with her.A.be pleased with; that B.please; whichC.please; that D.be pleased with; which( )9.In all my years as a detective I have never heard of a thief_______such a loss of memory.A.had B. to have C.having D.being had( )10.I was surprised by her words, which made me recognize silly mistakes I had made.A.what B.that C.how D.which( )11.He glanced over at her, that though she was tiny, she seemed very well put together.A.noting B.noted C.to note D.having noted( )12.—I’ve taken someone else’s green sweater by mistake.—It Harry’s. He always wears green.A.has to be B.will be C.mustn’t be D.could be( )13.Many people who had seen the film were afraid to go to the forest when they remembered the scenes people were eaten by the tiger.A.in which B.by which C.which D.that( )14.The news _______Lincoln was murdered filled the American people’s hearts with deep sorrow.A.which B.when C.that D.how( )15.The shopkeeper did not want to sell for he thought was not enough.A.where B.how C.what D.which( )16.Oil prices have risen by 32 percent since the start of the year, a record US$57.65 a barrel on April 4.A.have reached B.reaching C.to reach D.to be reaching( )17.—that he managed to get the information?—Oh, a friend of his helped him.A.Where was it B.What was it C.How was it D.Why was it( )18.Franklin Blake, meanwhile, ________a letter from Rosonna _____that she knew what he had done on the night the Moonstone disappeared.A.received; said B.received; saying C.receiving; said D.receiving; saying( )19.—Must I turn off the gas after cooking?—Of course. You can never be careful with that.A.enough B.too C.so D.very( )20.---Tom is never late for work. Why is he absent today?---Something ______to him.A.must happen B.should have happenedC.could have happened D.must have happened二、短文改错:As students, we have classes from early morningtill late afternoon. Therefore, take a ten-minute break 61.between class is definitely important, even necessary. 62.Otherwise we may feel both physically or mentally tired. 63.During the ten-minute break we did something to get 64.rid of tiredness. What we need is to have real rest, 65.instead of getting even tired. So don’t do anything that 66.will make you too excited. My ten-minute break is always pleased. 67.I usually do some simple exercises. Sometime I have a free chat 68.with my classmates or just take a walk during the break. 69.When the new class begins, I feel freshly again. 70.三、完型填空:…Each of us fails from time to time. If we are wise, we accept the failures as a 21 part of the learning process. But all too often as parents and teachers we 22 this same right to our children.Donnie was my youngest thirdgrader. He was a shy, nervous boy. His fear of 23 kept him from classroom games that other children played with joy. He 24 answered questions-he 25 be wrong. I tried my best to build his self-confidence. But 26 changed until midterm, 27 Mary Anne, a student teacher, was assigned(指派、分配)to our classroom.She was young and pretty, and she loved children. My pupils, Donnie 28 admired her. One morning we were working on 29 problems on the blackboard. Donnie had copied the problems and filled in answers. 30 with his progress, I left the children with Mary Anne and went for art materials. When I returned, Donnie was in tears. He’d missed the third maths problem. My student teacher looked at me 31 . suddenly her face brightened. From the desk we 32 , she got a canister(小筒) filled with 33 .“Look, Donnie,” she said, kneeling beside him and 34 lifting the tear-stained face from his arms. “I’ve got something to show you.” She removed the pencils, one 35 , and placed them on his desk. “See these pencils, Donnie?” she continued. “They belong to Mrs. Lindstrom and me. See how the erasers are 36 ? That’s because we make mistakes too. Lots of them. But we 37 the mistakes and try again. That’s 38 you must learn to do, too.”She kissed him and stood up. “Here,” she said, “I’ll 39 one of these pencils on your desk so you’ll remember that 40 makes mistakes, even teachers.” Donnie looked up with love in his eyes and a smile---the first I’d seen on his face that year.( )21.A.former B.useless C.necessary D.fair( )22.A.deny B.admit C.give D.require( )23.A.friendship B.failure C.success D.teachers( )24.A.often B.seldom C.ever D.frequently( )25.A.must B.can C.might D.will( )26.A.everything B.nothing C.something D.anything( )27.A.when B.because C.so D.while( )28.A.excepted B.including C.included D.contained( )29.A.English B.history C.maths D.geography( )30.A.Eager B.Angry C.Surprised D.Pleased( )31.A.in despair B.in public C.in want D.in silence( )32.A.spared B.shared C.stared D.bought( )33.A.books B.pencils C.knives D.erasers( )34.A.gently B.slightly C.quickly D.skillfully( )35.A.at times B.at one time C.at a time D.at time( )36.A.dry B.clean C.new D.worn( )37.A.make B.rewrite C.copy D.erase( )38.A.what B.which C.that D.why( )39.A.remain B.leave C.lie D.set( )40.A.everybody B.nobody C.somebody D.one四、阅读理解:AIt gives me great pleasure today to say a few words in praise of a man we will all miss very much. To be honest, I can’t imagine we will do without him when he’s gone. Bill Masters almost single-handed built up our sales force in the Houston area and developed the market position that we enjoy today. In only six years, he has brought the firm from a very low fifth position in the area sales to the point where we now outsell all but one of our competitors. Not only have we got 37 percent of the market under Bill’s leadership; we are increasing our share with each passing month.As you know, the company has moved Bill to northern California to work his sales magic in one of this company’s most competitive areas. But we know that if anyone can do it, Bill Masters can, and I know you all join me in wishing him the best of luck in his new work.( )41.The speech was made .A.at a welcome meeting B.after someone diedC.when somebody was leaving D.when they had a new manager( )42.How long did Masters work there?A.37 years. B.Less than 5 years.C.About six years. D.Since he began to work.( )43.When Bill started to work in Houston area, he had to help him.A.many people B.nobody C.about 37 people D.very few people( )44.Bill increased the company’s sale .A.by 37 percent every month B.to the second largest in the areaC.to be the fifth largest in the area D.five times as much as beforeBBeijing—A recent Chinese blockbuster(轰动的作品) “A World Without Thieves” is based on the experiences of a young migrant worker carrying 60,000 yuan on a train packed with thieves. But while the image of a warm-hearted but somewhat naive migrant worker may have made film fans chuckle, it’s a sure bet that most of China’s migrant workers are yet to step into a cinema to admire it.“Forty yuan a ticket? I can’t afford it,” said Shen Jie, a migrant worker at a construction site in Dongzhimen, east Beijing.Shen found it hard to remember when he last saw a film, or what it was about. “It must be 10 years ago,” he said.Though they are the builders of the nation’s theaters and cinemas, a limited cultural life is common among China’s 120 million migrant workers.Shen arrived from East China’s Zhejiang Province in 1991. Life was better then; money seemed to come more easily. “Now, as more and more workers are rushing to the capital, it’s too hard to earn money, and none of us dare think about seeing films,” he said.For many like Shen, the dream is earning enough to pay for their children’s education so they can find jobs in the cities and say goodbye to the hardships of rural life forever. This drives themto work hard and save as much as possible.With a monthly salary of less than 500 yuan, Shen has to send money home to his little son and silver-haired parents.In Shen’s small dormitory, which he shares with seven other co-workers, there is a well-thumbed copy of a magazine published in 1998.A recent survey by local media revealed that 80 percent of migrant workers spent their spare time sleeping and chatting because of exhaust and a lack of income. The same survey found that 47 percent of migrant workers have to work for more than 10 hours a day. Around 40 percent do not even possess a book, and nearly 60 percent say they are dissatisfied with their cultural life.Like many of Shen’s co-workers, reading newspapers and hanging out in Beijing’s streets provide evening entertainment.( )45.We can infer from the passage “A World Without Thieves” is a film that .A.talks about experiences of a group of thievesB.deals with the life of migrant workersC.explains how to catch thieves on trainsD.attracts many migrant workers( )46.As for the migrant worker, Shen Jie, .A.life was harder when he first came to work in BeijingB.he enjoyed a lot of films ten years agoC.his wish was to pay for his son’s educationD.the capital is too hard a place for him to make any money( )47.According the passage, which of the following is TRUE?A.the workers enjoy reading very much, no matter how old the magazines areB.the workers have so little to read that they often read the same magazine again and again C.the workers enjoy magazines because they are easy to understandD.the workers think highly of the copy of the magazine published in 1998( )48.The main idea of this passage is that migrant workers .A.lack cultural experiences B.are not very well-paid in BeijingC.are looked down upon by city people D.need the government’s attentionCThe private automobile has long played an important role in the United States. In fact, it has become a necessary and important part of the American way of life. In 1986, 69 percent of American families owned at least one car, and 38 percent had more than one. By giving workers rapid transportation, the automobile has freed them from having to live near their place of work. This has encouraged of the growth of the cities, but it has also led to traffic problems.For farm families the automobile is very helpful. It has made it possible for them to travel to town very often for business and for pleasure, and also to transport their children to distant schools.Family life has been affected in various ways. The car helps to keep families together when it is used for picnics, outings, and other shared experiences. However, when teenage children have the use of the car, their parents can’t keep an eye on them. There is a great danger if the driver has been drinking alcohol or taking drugs —or is “showing off”by speeding or breaking other traffic laws. Mothers of victims of such accidents have formed an organization called MADD(Mothers Against Drunk Driving). These women want to prevent further tragedies(悲剧). They have worked to encourage the government to limit the youngest drinking age. Students have formed a similar organization, SADD(Students Against Drunk Driving) and are spreading the same message among their friends.For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.( )49.Which of the following is NOT mentioned in the text?A.Cars have encouraged the growth of the cities.B.Cars can bring families together when they go for picnics.C.Cars have enabled people to live far from their place of work.D.Cars help city families to transport their children to faraway schools.( )50.What has been done to deal with the problem of drunk driving?A.Parents have paid more attention to their children.B.Some organizations have been set up against drunk driving.C.Mothers have tried to persuade their children not to drink alcohol.D.University students have asked the government to solve the problem.( )51.We can infer from the text that in America.A.it will be more difficult for people to get new carsB.parents will not allow their children to have their own carsC.the government will encourage people to use public transportationD.cars will still be popular though they have caused many problemsDFull face transplants are no longer science fiction fantasy(幻想), a leading surgeon has said, adding that they are technically feasible(可行的) but ethically(道德的) complex.Peter Butler from London’s Royal Free Hospital called for a debate on the ethics of such an operation made possible by new drugs which stop the body’s immune system(免疫系统) rejecting a transplanted face. “It is not ‘can we do it?’but ‘should we do it?’”he told the BBC. “The technical part is not complex, but I don’t think that’s going to be the very great difficulty …. The ethical and moral debate is obviously going to have to take place before the first facial transplantation. ”The British Association of Plastic Surgeons(整形外科医生) will discuss the microsurgical procedure(微型外科技术), which could give new skin, bone, nose, chin, lips and ears from deceased donors(捐赠人) to patients disfigured损伤外貌by accidents, burns or cancer. But surgeons could have trouble finding enough willing donors. Butlers said his survey of doctors,nurses and members of the public showed most would accept a face transplant but few were willing to donate their own after dying.Despite a number of ethical concerns, Christine Piff, who founded the charity Let’s Fact It after suffering a rare facial cancer 25 years ago, welcomed the possibility of face transplants. She rejected the idea that the procedure would mean people would end up living with a dead person’s face. “There are so many people without faces, I have half a face …, but we are all so much more than just a face …, you don’t take on their personality. You are still you,” she told reporters. “If we can donate other organs of the body then why not the face. I can’t see anything wrong with it.”( )52.The underlined word “deceased” in the third paragraph probably means .A.willing B.dead C.diseased D.dying( )53.When Christine Piff says “There are so many people without faces…”, she refers to the people .A.who are dishonorable and shamelessB.who have got their faces transplantedC.who are seriously injured by accidentD.who are disfigured by accidents, burns and cancer( )54.According to the passage, what makes it likely to carry out a facial transplantation?A.Drugs are available to stop the body’s immune system rejecting a transplanted face.B.It’s morally practical, though technically complex.C.Most people accept the idea of face transplants.D.The British Association of Plastic Surgeons has performed the operation.( )55.What is implied but not stated in the passage?A.Christine Piff has been the first lucky patient to receive a face transplant.B.Surgeons have difficulty finding enough willing donors.C.The main difficulty with the operation lies in the matter of ethics and morality.D.Nobody other than Christine Piff is quite in favor of the donation of organs.( )56.What would be the best title for the text?A.First Facial Transplantation B.Debate on the Ethics of Face TransplantC.Let’s Face It D.Face Transplant No Longer Science FictionEWhile income worry is a rather common problem of the aged, loneliness is another problem that aged parents may face. Of all the reasons that explain their loneliness, a large geographical distance between parents and their children is the major one. This phenomenon is commonly known as “Empty Nest Syndrome”(空巢综合症).In order to seek better chances outside their countries, many young people have gone abroad, leaving their parents behind with no clear idea of when they will return home. Their parents spend countless lonely days and nights, taking care of themselves, in the hope that someday their children will come back to stay with them. The fact that most of these young people have gone to Europeanized or Americanized societies makes it unlikely that they will hold as tightly to the value of duty as they would have if they had not left their countries. Whatever the case, it had been noted that the values they hold not necessarily match what they actually do. This geographical and cultural distance also prevents the grown-up children from providing response in time for their aged parents living by themselves.The situation in which grown-up children live far away from their aged parents has been described as “distant parent phenomenon”, which is common both in developed countries and in developing countries. Our society has not yet been well prepared for “Empty Nest Syndrome”. ( )57.According to the passage, the loneliness of aged parents is mainly caused by .A.their earlier experience of feeling lonelyB.the unfavorable living conditions in their native countriesC.the common worry about their incomeD.the geographical distance between parents and children( )58.Many young people have gone abroad, leaving their aged parents behind, to .A.live in the countries with more moneyB.seek a better place got their aged parentsC.continue their studies abroadD.realize their dreams in foreign countries( )59.If young people go abroad, .A.they do not hold to the value of duty at allB.they can give some help to their parents back homeC.they cannot do what they should for their parentsD.they believe what they actually do is right( )60.From the last paragraph, we can infer .A.the situations in the developed and developing countries are differentB.“Empty Nest Syndrome” has arrived unexpectedly in out societyC.children will become independent as soon as they go abroadD.the aged parents are not fully prepared for “Empty Nest Syndrome”高三英语周练(unit13)参考答案一、英语知识应用:1-5ABDAD 6-10CBCCA 11-15ADACC 16-20BCBBD三、完型填空:21-25CABBC 26-30BACCD 31-35ABBAC 36-40DDABA四、阅读理解:41-44CCDB 45-48DCBA 49-51DBD 52-56BDACD 57-60DDCB二、短文改错:61.take-taking 62.class-classes 63.or-and 64.did-do 65.real-a real66.tired-more tired 67.pleased-pleasing68.Sometime-Sometimes 69.正确70。
第13周周末作业班级_____________姓名_______________第一部分:勾股定理22.如图所示的一块地,AD=12m ,CD=9m ,∠ADC=90°,AB=39m ,BC=36m ,求这块地的面积.19.(10分)如图,一架云梯长25 m ,斜靠在一面墙上,梯子靠墙的一端距地面24 m.(1)这个梯子底端离墙有多少米?(2)如果梯子的顶端下滑了4 m ,那么梯子的底部在水平方向也滑动了4 m 吗?24.(7分)如下页图,折叠长方形的一边AD,使点D 落在BC 边上的点F 处,BC =10cm ,AB =8cm , 求:(1)FC的长;(2)EF 的长.25.(7分)如图,在长方体ABCD A B C D ''''-中,2AB BB '==,AD =3,一只蚂蚁从A 点出发,沿长方体表面爬到C '点,求蚂蚁怎样走路程最短,最短路程是多少?19,直角三角形的三边分别为a-b ,a ,a+b ,其周长为24cm ,求三角形的面积,第二部分:实数 (7) ()27523110-+⎪⎪⎭⎫ ⎝⎛+--π (2)()121230-++-(1)21831927⨯+- (1) 20032004(32)(32)-+(2)()()131381672-++- (4)2101.036813-+-5.(10分)已知23,23-=+=y x ,求)(22y x yx y xy x +-+++的值.第三部分:确定位置有一张图纸被损坏,但上面有如图所示的两个标志点A (-3,1),B (-3,-3)可见,而主要建筑C (3,2)破损,请通过建立直角坐标系找到图中C 点的位置.第四部分:一次函数21.(6分)已知与成正比例,且时.(1)求与之间的函数关系式;(2)当时,求的值.18.一次函数y=k1x﹣4与正比例函数y=k2x的图象经过点(2,﹣1).(1)分别求出这两个函数的表达式;(2)求这两个函数的图象与x轴围成的三角形的面积.20.一次函数y=(2a+4)x﹣(3﹣b),当a,b为何值时:(1)y与x的增大而增大;(2)图象经过二、三、四象限;(3)图象与y轴的交点在x轴上方;(4)图象过原点.22.(6分)如图,过A点的一次函数的图象与正比例函数y=2x的图象相交于点B,求这个一次函数的表达式.16. 某移动通讯公司开设了两种通讯业务:“全球通”使用者先缴50元月租费,然后每通话1分钟,再付话费元;“神舟行”不缴月租费,每通话1min 付费元.若一个月内通话x min ,两种方式的费用分别为y 1元和y 2元.(1)写出y 1、y 2与x 之间的函数关系式;(2)一个月内通话多少分钟,两种移动通讯费用相同;(3)某人估计一个月内通话300min ,应选择哪种移动通讯合算些.第五部分:二元一次方程组1、用指定的方法解下列方程组:(1) ⎩⎨⎧=+=-524y x y x (代入法) (2) ⎩⎨⎧-=--=-.2354,42y x y x (加减法)2、某制衣厂某车间计划用10天加工一批出口童装和成人装共360件,该车间的加工能力是:每天能单独加工童装45件或成人装30件。
周周练(13) 答案1. 解:(Ⅰ)设函数()g x 图像与x 轴的交点坐标为(a ,0),又∵点(a ,0)也在函数()f x 的图像上,∴320a a +=.而0a ≠,∴1a =-.(Ⅱ)依题意,()()f x g x =,即2ax ax x a +=-,整理,得 2(1)0ax a x a +-+=,①∵0a ≠,函数()f x 与()g x 图像相交于不同的两点A 、B ,∴0∆>,即△=22(1)4a a --=2321a a --+=(3a -1)(-a -1)>0.∴-1<a <31且0a ≠.设A(1x ,1y ),B(2x ,2y ),且1x <2x ,由①得,1x 2x ⋅=1>0, 121a x x a-+=-.设点o 到直线()g x x a=-的距离为d ,则d =12|||AB x x ==-.∴O A BS ∆=2112||x x-=21=.∵-1<a <31且0a ≠,∴当13a =-时,O A B S ∆有最大值33,O A B S ∆无最小值.(Ⅲ)由题意可知()()()()f x g x a x p x q -=--.10x p q a <<<<,∴()()0a x p x q -->,∴当()0,x p ∈时,()()0,f x g x ->即()()f x g x >.又()()()()()()(1)f x p a a x p x q x a p a x p ax aq --=--+---=--+, 0,110,x p ax aq aq -<-+>->且∴()()f x p a --<0, ∴()f x p a <-,综上可知,()()g x f x p a<<-.2. 解:(I )22()[(2)]x f x x a x a b e -'=++++,由条件得:(1)0f '=. 230a b ∴++=,32b a ∴=--.22()[(2)3]0x f x x a x a e -'=++-->得:(1)[(3)]0x x a ---->.当4a =-时,1x =不是极值点,4a ∴≠-.当4a >-时,得1x >或3x a <--;当4a <-时,得3x a >--或1x <.综上得:当4a >-时,()f x 的单调递增区间为(,3)a -∞--及(1,)+∞单调递减区间为(3,1)a --.当4a <-时,()f x 的单调递增区间为(,1)-∞及(3,)a --+∞单调递减区间为(1,3)a --.(II )(0,1)a ∈时,由(I)知()f x 在[0,1)上单调递减,在(1,2]上单调递增.∴当[0,2]x ∈时,11min ()(1)(1)(2)f x f a b e a e --==++=--.职 又2(0)(32)f a e-=--,(2)421f a b =++=,则(2)(0)f f >.∴当[0,2]x ∈时,1()[(2),1]f x a e -∈--.由条件有:2112max minmax [(2)]1()()()()m a m e f x f x f x f x -+++>-=-11(2)a e-=++.2(2)2m a m a ++>+.即2(1)20m a m ++->对(0,1)a ∈恒成立.令2()(1)2g a m a m =++-,则⎪⎩⎪⎨⎧≥-+=≥-=01)1(02)0(22m g m g解得:m ≥或2m ≤.3. 【解析】(1)证明:∵),(21OB OA OM += ∴M 是AB 的中点.设M 点的坐标为(x ,y ),由21(x 1+x 2)=x =21,得x 1+x 2=1,则x 1=1-x 2或x 2=1-x 1.而y =21(y 1+y 2)=21[f (x 1)+f (x 2)] =21(21+log 2)1log21122211x x x x -++-=21(1+log 2)1log122211x x x x -+- =21(1+log 2)1·12211x xx x --=21(1+log 2,21)0121··2121=+=()x x x x ∴M 点的纵坐标为定值21.(2)由(1),知x 1+x 2=1,f (x 1)+f (x 2)=y 1+y 2=1,S n =f (),1()2()1nn f n f n-+⋯++S n =f ()1()2()1nf n n f nn +⋯+-+-,两式相加,得2S n =[f ()1()1nn f n -+)+[f ()2()2nn f n-+)+…+[f ()1()1nf n n +-)=1111-+⋯++n ,∴S n =21-n (n≥2,n∈N *).(3)当n≥2时,a n =114114().(1)(1)(1)(2)12n n S S n n n n +==-++++++T n =a 1+a 2+a 3+…+a n =432+[()1111()4131+-++⋯+-n n ]=432+(.22)2131+=+-n n n由T n <λ(S n+1+1),得22+n n <λ·.22+n ∴λ>.444444)2(422++=++=+nn n n n n n ∵n+n4≥4,当且仅当n =2时等号成立,∴.21444444=+≤++nn因此λ>21,即λ的取值范围是(,21+∞).4. 解:(1)由题意,211()sin g x xxθ'=-+⋅≥0在[)1,+∞上恒成立,即2sin 10sin x xθθ⋅-⋅≥.∵θ∈(0,π),∴sin 0θ>.故sin 10x θ⋅-≥在[)1,+∞上恒成立, 只须sin 110θ⋅-≥,即sin 1θ≥,只有sin 1θ=.结合θ∈(0,π),得π2θ=.(2)由(1),得()()f x g x -=2ln mmx x x--.()222()()m x x mf xg x x -+'∴-=. ∵()()f x g x -在其定义域内为单调函数,∴220mx x m -+≥或者220mx x m -+≤在[1,+∞)恒成立. 220mx x m -+≥ 等价于2(1)2m x x +≥,即221x m x+≥,而22211x x x x=++,(21x x+)max =1,∴1m ≥.220mx x m -+≤等价于2(1)2m x x +≤,即221x m x+≤在[1,+∞)恒成立,而221x x +∈(0,1],0m ≤.综上,m 的取值范围是(][),01,-∞+∞ . (3)构造()()()()F x f x g x h x =--,2()2ln m e F x mx x xx=---.当0m ≤时,[1,]x e ∈,0m mx x -≤,22ln <0e x x--,所以在[1,e ]上不存在一个0x ,使得000()()()f x g x h x ->成立. 当0m >时,22222222(())'m e m x x m eF x m xxxx-++=+-+=.因为[1,]x e ∈,所以220e x -≥,20mx m +>,所以(())'0F x >在[1,]x e ∈恒成立.故()F x 在[1,]e 上单调递增,m ax ()()4m F x F e me e ==--,只要40m me e-->,解得241e m e >-.故m 的取值范围是24(,)1e e +∞-.。
卜人入州八九几市潮王学校金海岸九年级上学期数学第13周周末作业班别:成绩: 一、选择题 1.2的倒数是 A.—2B.21C.2±D2 2.一组数据7,6,x,9,11的平均数是9,那么数x 等于 A.3B.10 C.12D.93.以下各图是右边直三棱柱的主视图的是 4.以下各点中在反比例函数xy 2-=的图像上的点是 A.(—1,—2)B.〔1,—2〕C.〔1,2〕D.〔2,1〕5.红丝带是关注艾滋病防治问题的国际性标志,人们将红丝带剪成小段,并用别针将折叠好的红丝带别在胸前,如下列图。
红丝带重叠局部形成的图形是 二、填空题〔此题有5小题,每一小题4分,一共20分〕6.2021年消费总值为13431000万元,用科学记数法可表示为__________万元 7.因式分解:=-x x43___________________8.如图,⊙O 是ABC ∆的外接圆,点D 在⊙O 上,∠ACB=∠D ,BC=2,那么AB 的长是_________________9.2007年4月15日起,奥运会开幕式门票开场向公众预售,承办开幕式的国家体育场有万个座位,扣除必须预售的门票,开幕式的可预售门票大约还有6万张,用于向全球出售,其中26000张将向国内公众公开出售.据预测,国内公众预订开幕式门票的人数将到达1000万.按规定,国内每名观众只能申购1张开幕式门票,并要通过抽签来谁能买到.我公民王芳也参加了申购,那么她中签的概率是________________________10.一个水池有有2个速度一样的进水口,1个出水口,单开一个进水口每小时可进水1立方米,单开一个出水口每小时可出水2立方米.。
某天0点到6点,该水池的蓄水量与时间是的函数关系如下列图〔至少翻开一个进水口〕。
.给出以下三个论断:(1)0点到3点只进水不出水;(2)3点到4点不进水只出水,(3)4点到6点不进水也不出水。
那么错误..的论断是______________________________(填序号) 三、解答题〔此题一共5小题,一共30分。
第十三次周考答案1、A (解析:B度duó;C脾pí,曝pù;D、间jiàn,肖xiào)2、B(解析:A涎xián ;C葸xǐ,劲jìng;D牖yǒu,逡qūn)3、答案:D (解析:A喧——暄;B玩——顽;杆——竿;C蟮——鳝)4、答案.B【解析】①侃侃而谈:指人理直气壮、从容不迫地说话。
②侧日而视:指不敢从正面看,斜着眼睛看,形容畏惧而又愤恨。
此处不合语境。
③众所周知:大家普遍知道的。
前面不能再加“大家”,重复。
④胸无城府:形容待人接物坦率真诚。
城府,借指待人处事的心机。
⑤不虞之誉:没有意料到或意想不到的赞扬。
⑥不情之请:指不合情理的请求。
称自己提出请求时的客气话,为自谦之词。
5、答案:C(解析:①倚马可待:形容文思敏捷,写文章快。
句意是指“工作细节”,不合语境。
②蚌病成珠:指珍珠由蚌痛苦孕育而成,比喻因不得志而写出好文章。
使用正确。
③举步维艰:指行走困难、行动不方便,也可形容处境。
使用正确。
④炙手可热:比喻权势大,气焰盛,使人不敢接近。
只能用来形容人,不能作“话题”的定语。
⑤积不相能:表示双方长期互不亲善,不和睦。
使用正确。
⑥当仁不让:原指以仁为任,无所谦让,后泛指遇到应该做的事,积极主动去做,不退让。
此处语境没有不“不退让”之意,该成语不合语境。
)6、答案C(A.成分残缺,应在“还”的前面添加“我们的剧目”。
B.语序不当,应将“如果”放在“美国国会”的前面。
D.句式杂糅,可把“把……为”改为“以……为”或“把……作为”。
)7、答案:C(解析:本题考查辨析并修改病句的能力。
A项,偷换主语。
在“容易导致心理产生一系列问题”处,偷换了主语。
B项,主宾搭配不当。
主语“超微颗粒污染物”和宾语“健康风险”不搭配,应在主语前加“吸入”。
D项,表意重复。
“旨在为了”语义重复,去掉“为了”。
)8、答案:C (解析:师:名词作动词,学习)9、答案:B (解析:可:难道,哪能)10、答案:D (解析:A ①连词,表递进,并且;②连词,表转折,却;B ①连词,表因果,所以;②形容词,原来的;C①代词,它的;②副词,大概;D①②都是助词,的。
典型登革热的症状特点每日一练(2016.11.26)一、单项选择题(每小题均有1个正确答案,请从每小题的备选答案中选出你认为正确的答案,在答题卡相应位置上用2B铅笔填涂相应答案代码。
每小题所有答案选择正确的得分;不答、错答、漏答均不得分。
答案写在试题卷上无效。
)1、成人体重50kg,头、颈部、胸、腹、会阴及双上肢均为Ⅱ°烧伤,伤后第1个24小时补胶体液的量为A.1225mlB.1425mlC.1625mlD.1825mlE.2025ml2、关节受外伤作用,发生异常扭转所致的损伤为( )A.挫伤B.挤压伤C.扭伤D.裂伤E.擦伤3、女性,双手、双前臂、右上臂和前胸有3手掌面积的烫伤,创面可见较大水疱疱壁较薄,疼痛较剧。
此病人的烧伤深度为( )A.浅Ⅱo及深ⅡoB.ⅢoC.浅ⅡoD.ⅡoE.深Ⅱo及Ⅲo4、损伤的护理诊断,下述哪项不正确( )A.疼痛B.体液不足C.潜在并发症D.低钾E.恐惧5、男性,42岁,前臂外伤手术缝合后5天,局部伤口红肿、疼痛,触之有波动感,T39℃,伤口换药时哪项不妥A.及时拆除缝线,充分引流B.伤口应每天换药一次C.正确应用抗菌药及引流物D.清洁伤口、清除坏死组织E.伤口应每2—3天换药一次6、有关损伤的急救和转运,下列哪项是错误的( )A.外露骨折断端应及时复位B.开放性伤口用无菌纱布覆盖,缠上绷带C.四肢动脉大出血时可上止血药D.脊柱骨折的伤员必须卧板床E.已明确无颅脑及腹部内脏损伤而剧痛的患者,可注射止痛剂7、男性,34岁,头面部发生爆炸伤,急需行清创缝合术,清创过程中以下哪项有错( )A.去除异物及坏死组织B.伤后6—8小时内清创C.若伤口污染重清创后可延期缝合D.若受伤超过12小时,不宜清创缝合E.伤后12小时内,经彻底清创可Ⅰ期缝8、女性,双手、双前臂、右上臂和前胸有3手掌面积的烫伤,创面可见较大水疱疱壁较薄,疼痛较剧。
此病人的烧伤深度为( )A.浅Ⅱo及深ⅡoB.ⅢoC.浅ⅡoD.ⅡoE.深Ⅱo及Ⅲo9、男性,18岁,头部被菜刀砍伤已2天余,伤口6cm,裂开,脓性分泌物较多。
山东省一级结构工程师考点:结构工程软件选用原则每日一练(2016.11.26)一、选择题1、在计算机网络中,常将实现通信功能的设备和软件称为:A.资源子网B.通信子网C.广域网D.局域网【答案】B2、用二进制数表示的计算机语言称为:A.高级语言B.汇编语言C.机器语言D.程序语言【答案】C用二进制数表示的计算机语言称为:机器语言。
3、在下面列出的四种码中,不能用于表示机器数的一种是:A.原码B.ASCII码C.反码D.补码【答案】B机器数的表示有原码表示法、反码表示法、补码表示法。
4、十进制的数256.625用十六进制表示是:A.110.BB.200.CC.100.AD.96.D【答案】C十进制数转换成十六进制数,整数部分除16取余,小数部分乘16取整。
5、操作系统中采用虚拟存储技术,实际上是为实现:A.在一个较小内存储空间上,运行一个较小的程序B.在一个较小内存储空间上,运行一个较大的程序C.在一个较大内存储空间上,运行一个较小的程序D.在一个较大内存储空间上,运行一个较大的程序【答案】B虚拟存储技术实际上是在一个较小的物理内存储器空间上,来运行一个较大的用户程序。
6、软件系统中,能够管理和控制计算机系统全部资源的软件是;A.应用软件B.用户程序C.支撑软件D.操作系统【答案】D软件系统中,能够管理和控制计算机系统全部资源的软件是操作系统。
7、因特网是一个联结了无数个小网而形成的大网,也就是说:A.因特网是一个城域网B.因特网是一个网际网C.因特网是一个局域网D.因特网是一个广域网【答案】B因特网是一个网际网,也就是说因特网是一个联结了无数个小网而形成的大网。
8、数字签名是最普遍、技术最成熟、可操作性最强的一种电子签名技术,当前已得到实际应用的是在:A.电子商务、电子政务中B.票务管理中、股票交易中C.股票交易中、电子政务中D.电子商务、票务管理中【答案】A数字签名是目前电子商务、电子政务中应用最普遍、技术最成熟的、可操作性最强的一种电子签名方法。
第十三周科学周考
姓名:
一、填空。
1.神经分布于( ).脑神经由()发出,主要分布于人体的()和();脊神经从()发出,主要分布于人体的()和()。
2.神经就像(),起着()的作用。
3.脊髓在我们的()中央,藏在()里,与( )相连。
4 .()分担一部分简单的指挥和协调工作,是脑和神经间的‘‘联络站”。
二.判断。
1.大脑和脊髓是人体的神经中枢。
( )
2.神经专门负责传递信息。
()
3.神经传递信息的速度非常快。
()
4.神经系统包括大脑、小脑和神经。
()
5.信号要经过许多中间步骤,才能达到人体的最高指挥中心。
()
三.选择。
1.人脑的颜色是()的。
A.黄色
B.红色
C.淡粉红色
2.人的左脑负责指挥()。
A.音乐、绘画、幻想、梦想
B数学、逻辑、语言、书写
C.语言、书写、幻想、梦想
3.人的右脑控制( )的运动。
A.左半身
B.右半身
C.下半身
四.名词解释。
1.传入神经:
2.传出神经:
五.为什么每上一节课要休息10分钟?
六.我们做数学题时,神经系统是怎样工作的?
七.赛跑时,神经系统是怎样工作的?。
第13章课后习题答案13-1解(1 )( 2 )==2879.13mm( 3 )不考虑带的弹性滑动时,( 4 )滑动率时,13-2解(1 )( 2 )=(3 )= =13-3解由图可知=图13.6 题13-3 解图13-4解(1 )=( 2 )由教材表13-2 得=1400mm( 3 )13-5解由教材表13-6 得由教材表13-4 得:△=0.17kW, 由教材表13-3 得:=1.92 kW, 由教材表13-2 得:,由教材表13-5 得:取z=313-6解由教材表13-6 得由图13-15 得选用 A 型带由教材表13-3 得选初选取==1979.03mm由教材表13-2 得=2000mm由教材表13-3 得:=1.92 kW,由教材表13-4 得:△=0.17kW 由教材表13-2 得:,由教材表13-5 得:取z=413-7解选用A 型带时,由教材表13-7 得,依据例13-2 可知:,=2240mm , a =757mm ,i=2.3 ,。
由教材表13-3 得=2.28 kW,由教材表13-4 得:△=0.17kW,由教材表13-2 得:取z =5由此可见,选用截面小的 A 型带较截面大的 B 型带,单根带的承载能力减小,所需带的根数增多。
13-8 解略。
13-9解由教材表13-9 得p =15.875mm ,滚子外径15.875(0.54+cot =113.90mm15.875(0.54+cot =276.08mm=493.43mm13-10解(1)由图13-33得查教材表13-11,得取由式(13-18)得P ≤( 2 )由图13-33 得可能出现链板疲劳破坏( 3 )由图13-34 查得可用滴油润滑。
13-11解( 1 )链轮齿数假定,由教材表13-10,取,,选实际传动比链轮节数初选中心距=取由教材表13-13查得取估计此链传动工作位于图13-33所示曲线的左侧,由教材表13-11得采用单排链,≤由教材图13-33得当=960r/min时,08A链条能传递的功率满足要求,节距p =12.7mm。
司考考试案例分析题拿分技巧每日一练(2016.11.25)一、单项选择题(每题的备选项中,只有1个最符合题意)1、甲与乙教育培训机构就课外辅导达成协议,约定甲交费5万元,乙保证甲在接受乙的辅导后,高考分数能达到二本线。
若未达到该目标,全额退费。
结果甲高考成绩仅达去年二本线,与今年高考二本线尚差20分。
关于乙的承诺,下列哪一表述是正确的?A.属于无效格式条款B.因显失公平而可变更C.因情势变更而可变更D.虽违背教育规律但属有效【司法部答案】D【考点】合同条款的效力认定【答案解析】《合同法》第40条规定,“格式条款具有本法第五十二条和第五十三条规定情形的,或者提供格式条款一方免除其责任、加重对方责任、排除对方主要权利的,该条款无效”。
题目当中并未给出系格式条款的信息,A不选。
《民法通则意见》第72条规定,“一方当事人利用优势或者利用对方没有经验,致使双方的权利义务明显违反公平?等价有偿原则的,可以认定为显失公平”?该合同内容确定,并无主观意思上的瑕疵,未出现显失公平,B不选。
《合同法解释二》第26条规定,“合同成立以后客观情况发生了当事人在订立合同时无法预见的、非不可抗力造成的不属于商业风险的重大变化,继续履行合同对于一方当事人明显不公平或者不能实现合同目的,当事人请求人民法院变更或者解除合同的,人民法院应当根据公平原则,并结合案件的实际情况确定是否变更或者解除”。
题目情形不符合情势变更,C不选。
确保能考上二本可能违背教育规律,因为考试成绩影响因素较多,并不仅仅系于培训质量,但并不违反合同法第52条规定的五种无效情形,D可选。
2、甲对乙享有10万元的债权,甲将该债权向丙出质,借款5万元。
下列哪一表述是错误的?A.将债权出质的事实通知乙不是债权质权生效的要件B.如未将债权出质的事实通知乙,丙即不得向乙主张权利C.如将债权出质的事实通知了乙,即使乙向甲履行了债务,乙不得对丙主张债已消灭D.乙在得到债权出质的通知后,向甲还款3万元,因还有7万元的债权额作为担保,乙的部分履行行为对丙有效【司法部答案】D【考点】应收账款质权的设立与对抗效力【答案解析】《物权法》第228条规定,“以应收账款出质的,当事人应当订立书面合同。
如果你想要射门,就必须先拿到上场资格
——1班大队长
2016.11.27
1、(多选)下列说法中错误
..的是
A.举重前,运动员把两手伸入盛有白色粉末“镁粉”的盆
中,然后互相摩擦掌心,这样做能够减少手掌心与杠铃间的
摩擦力
B.形状规则物体的重心在它的几何中心
C.用拳头打击棉花包,虽然拳头不感到疼痛,但是棉花包
对拳头有作用力
D.两个力的合力可能等于较小的那个分力
3、(多选)如图所示,A、B是两
个叠放在水平面C上的长方形物
块,对B施一向右的水平推力F,
物体A和B以相同的速度做匀速直
线运动,由此可知,A、B间的动摩擦因数μ1和B、C间的
动摩擦因数μ2有可能是
A.μ1=0,μ2=0B.μ1=0,μ2≠0
C.μ1≠0,μ2=0 D.μ1≠0,μ2≠0
4、(多选)如图所示,以水平力F压物体A,
这时A沿竖直墙壁匀速下滑,若物体A与墙面
间的动摩擦因数为μ,A物体的质量为m,那么
A物体与墙面间的滑动摩擦力大小等于
A.μmg B.mg C.F D.μF
5、(多选)如图所示,质量为m的木
块在与水平方向成α角斜向上的拉力F
作用下沿水平地面匀速滑动,木块与水
平地面之间的动摩擦因数为μ,以下说法中正确的是
A.木块受到地面摩擦力大小等于F cosα
B.木块对地面摩擦力大小等于mg
C.木块对地面的压力大小等于mg-F sinα
D.木块受到地面摩擦力大小等于μ(mg-F sinα)
6、(A题)如图所示,物体a、b和c叠放在水平桌面上,水平力F b=5N、F c=10 N分别作用于物体b和c上,物体a、b 和c仍保持静止。
以F1、F2、F3分别表示a与b、b与c、c 与桌面间的静摩擦力的大小,则
A.F1=5 N,F2=0,F3=5 N
B.F1=5 N,F2=5 N,F3=0
C.F1=0,F2=5 N,F3=5 N
D.F1=0,F2=10 N,F3=5 N
(B题)如图所示,一根质量为M、
长为L的均匀长方体木料放在水
平桌面上,木料与桌面间的滑动摩
擦力大小为重力的μ倍。
现用一水平力F推木料,当木料经过图示位置时,已知重力加速度为g,则桌面对它的滑动摩擦力大小为______。
7、重200N的物体放在水平面上,已知物体与地面间的动摩擦因数为0.5,最大静摩擦力为120N。
现用劲度系数为6000N/m的弹簧水平拉物体,则当弹簧的伸长量分别为1.5cm、2.5cm时,物体受的摩擦力分别为多大?
答案:
1、AB;3、BD;4、BD;5、ACD;6、(A题)C,(B题)μM g;7、90N,100N。