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        1. 8. 空間四條直線a.b.c.d.滿足a⊥b.b⊥c.c⊥d.d⊥a.則必有A.a(chǎn)⊥c B.b⊥d C.b∥d 或a∥c D.b∥d 且a∥c 查看更多

           

          題目列表(包括答案和解析)

           

          第二節(jié) 完形填空(共20小題;每小題1.5分,滿分30分)

          閱讀下面短文,掌握其大意,然后從36—55各題所給的四個(gè)選項(xiàng)(A、B、C和D)中,選出可以填入空白處的最佳選項(xiàng)。

          I was only eight years old when the Second World War ended, but I can still remember something about the   36   celebrations in the small town where I lived on the day when the war in Europe ended. We had not   37   much from the war where, though, like most children of my age, I often saw   38   houses in the streets and the very big   39   lorries(卡車) passing through. But both at home and at school I had become   40   to the phrases “before the war” and “when the war is over”. “Before the war”, obviously,   41   had been better, though I was too young to understand why,   42   there had been no bombs then, and people had eaten things like ice cream and bananas, which I had  43   heard of. When the war was over we would go back to London, but this meant very  44   to me. I did not remember what London was like.

          What I remember now  45   V-Day(victory day) was the afternoon and the evening. Some boys and girls were collecting   46  and building an enormous bonfire(篝火). We stood and watched them for a time, and then I went home and   47   myself in with my key and waited for my parents to come back from work.

          It was May and still broad   48  when my mother arrived, and my father came in about an hour later. After dinner I said I wanted to   49   the bonfire, so when it got dark my father took me to the end of the street. The bonfire was very   50  , and somehow people had collected some old clothes to   51   “Hitler” with the moustache(胡子) they had put on top of it. Just as we arrived, they set light to it. The flames   52   soon. Everyone was cheering and shouting.

          I stood beside my father until the   53   started to go down, not knowing what to say. He said nothing, either. He had   54   in the First World War and remembered everything he had experienced. At last he said, “Well, that’s it, son. Let’s hope that this time it really will be the   55   one.”

          36. A. war                           B. victory                        C. Christmas                      D. birthday

          37. A. suffered                       B. learnt                              C. heard                              D. read

          38. A. crowded                  B. rebuilt                        C. bombed                          D. enlarged

          39. A. modern               B. old                                    C. railway                            D. army

          40. A. used                          B. devoted                          C. engaged                         D. related

          41. A. food                          B. things                         C. houses                                D. news  

          42. A. except that        B. now that                         C. for fear that                       D. in order that

          43. A. never                        B. hardly                         C. only                                  D. already

          44. A. much                        B .little                                 C. great                               D. important

          45. A. about                        B. on                                     C. for                                    D. during

          46. A. money                 B. wood                               C. information              D. clothes

          47. A. showed               B. allowed                           C. let                                     D. called

          48. A. early                         B. daylight                           C. dark                                 D. warm

          49. A. see                                B. light                                 C. find                                   D. put out

          50. A. high                           B. hot                                   C. dangerous                D. far

          51. A. draw                         B. paint                                C. write                                D. dress

          52. A. disappeared      B. happened                       C. rose                                 D. came

          53. A. sun                            B. moon                               C. fire                                   D. noise

          54. A. fought                 B. worked                            C. grown                        D. changed

          55. A. best                          B. worst                               C. first                                  D. last

           

          查看答案和解析>>

              閱讀下面短文,從短文后各題所給的四個(gè)選項(xiàng)(A、B、C和D)中,選出可以填入空白處的最佳選項(xiàng),并在答題卡上將該項(xiàng)涂黑。

          Growing up for me was a challenge. I started out at primary school and was always asked by my teacher to sit at the  36  of the class because I was a fool.

             I kept  37  things: I forgot nursery songs and spellings. I was the  38  of class jokes and I was all alone and  39 . I hated school, but my dad would hear none of it. He kept telling me I was a  40 , if I believed it.

             A  41  around came one day when I remembered the  42  of the word “Cognoscenti”; a word all the other “  43 students ” had forgotten how to spell  44  they spent their free time making fun of me. I wasn’t asked to spell,  45  I raised up my hand. So I stood up and went to the front of class,  46  23 pairs of eyes staring at me. My teacher grabbed her stick, ready to hit me if I’d  47_ . I wrote the letters, spelt the word and became an instant champion. Afterwards, I  48  and won, for my school, five Spelling Bee championships.

             Secondary school had its own share of challenges. I was a tall kid and wasn’t good at any  49 , except looking. I loved basketball and tennis.  50  I held a bat(球拍), I was laughed at by my opponent. He  51  six straight sets(盤,局) without sweat and there I was, sweating like I’d run a marathon, whereas I hadn’t even  52  a single point. My dad’s  53  kept playing in my ears “Stanley, you’re a champion if you believe it.”

          Believe it I did, because I wasn’t only good at tennis and basketball, I was an all-round athlete and  54  won both athletic and  55  scholarships to university.

          36. A. front

          B. back

          C. side

          D. corner

          37. A. forgetting

          B. leaving

          C. repeating

          D. using

          38. A. cause

          B. inventor

          C. object

          D. course

          39. A. rootless

          B. homeless

          C. careless

          D. friendless

          40. A. champion

          B. fool

          C. character

          D. failure

          41. A. moment

          B. possibility

          C. turn

          D. change

          42. A. meaning

          B. spelling

          C. way

          D. form

          43. A. polite

          B. dishonest

          C. bright

          D. absent-minded

          44. A. once

          B. while

          C. when

          D. because

          45. A. even though

          B. as though

          C. in case

          D. only if

          46. A. for

          B. as

          C. with

          D. before

          47. A. hesitated

          B. succeeded

          C. lied

          D. failed

          48. A. presented

          B. represented

          C. requested

          D. proposed

          49. A. exercise

          B. mathematics

          C. sport

          D. spelling

          50. A. At first

          B. First of all

          C. The first time

          D. For the first time

          51. A. won

          B. owned

          C. missed

          D. gained

          52. A. reached

          B. seized

          C. caught

          D. scored

          53. A. message

          B. information

          C. sentences

          D. words

          54. A. even

          B. still

          C. almost

          D. nearly

          55. A. economic

          B. historic

          C. academic

          D. financial

          查看答案和解析>>


          第二節(jié):完形填空(共20小題,每小題1.5分,滿分30分)
          閱讀下面短文,掌握其大意,然后從36~55各題所給的四個(gè)選項(xiàng)(A、B、C和D)中,選出最佳選項(xiàng),并在答題卡上將該項(xiàng)涂黑。
          Throughout history,people have been the victims of pickpockets.Today,  36  is one of the most rapidly increasing  37 .Pickpockets are increasing   38  and developing better methods to Practice their skill.  39  one million Americans lose money to pickpockets every year.No one is really safe  40  a skilled pickpocket.His victims,or“marks” 41  they are rolled,can be rich or poor,young or old.  42 the 18th century,pickpockets   43  in England.Large crowds of people would gather to watch the hanging  44 was supposed to be a warning to other pickpockets.  45 ,in time the practice Was discontinued.
          Police officials say that most   46  pickpockets come from South America. 47 these expert pickpockets  48   in special schools called Jingle Bell School.A pickpocket graduates from a J.B. 4 9 he is able to steal a wallet from a dressed dummy that has  50 inside its pockets!
          Some of the  51  places of pickpockets are banks,airports,supermarkets,trains and bus stations.  52 a pickpocket will work with another pickpocket  53  his partner.  54  being the victim of a pickpocket,it is   55 to be very careful when in the midst of large gatherings of people.
          36.A.pick pocketing           B.stealing pickpockets 
          C.to pickpocket             D.to steal pickpockets
          37.A.headaches           B.faults           C.mistakes                 D.crimes
          38.A.by far                 B.a(chǎn)t random    C.in number              D.out of order
          39.A.Automatically     B.Obviously    C.Approximately       D.Subsequently
          40.A.a(chǎn)gainst               B.with            C.out of                    D.from
          41.A.since                  B.a(chǎn)s                C.so                          D.thus
          42.A.At                      B.Since           C.From                     D.During
          43.A.were hanged       B.would hang   C.were hung              D.must be hung
          44.A.what                  B.of which      C.which                    D.a(chǎn)mong whom
          43.A.Therefore           B.At once       C.Because                 D.However
          46.A.a(chǎn)ttractive            B.convenient    C.efficient                 D.serious
          47.A.Much of             B.A large amount of   
          C.Many of                 D.A great number
          48.A.a(chǎn)re researched     B.specialize            C.a(chǎn)re trained              D.major
          49.A.where                 B.when                  C.a(chǎn)lthough                D.however
          50.A.money                B.jewelry               C.bells                      D.rings
          51.A.favorite              B.liking                    C.favored                  D.be liked
          52.A.Seldom               B.Once                  C.Often                     D.Forever
          53.A.like                    B.being                  C.for                        D.a(chǎn)s
          54.A.To avoid             B.To neglect           C.Trying not              D.To forget
          55.A.critical               B.fortunately          C.important               D.obvious

          查看答案和解析>>

          第二部分:閱讀理解(20小題, 每小題2分,滿分40分)

          閱讀下列短文, 從每題所給的四個(gè)選項(xiàng) (A、B、C和D) 中, 選出最佳選項(xiàng)

          A New Zealand fishermen caught what may prove to be a world-record-breaking colossal squid(魷魚).

          In the cold, dark waters of the Antarctic hides a creature with eight arms, two super long tentacles(觸須) and eyes as big as dinner plates. Sound like something out of a science fiction movie? Think again.

          On February 21, New Zealand fishermen landed a colossal squid the length of a school bus. They had been fishing with long lines for Chilean sea bass in the waters off the coast of New Zealand when they caught the rare squid. With two hours of hard work, the crew skillfully pulled the creature into a net and dragged in aboard their ship.

          Scientists evaluate that the animal weighs about a half ton and is about 40 feet long. That would make this colossal squid the biggest on record.

          First identified in 1925 after two tentacles were found in a whale’s stomach, the colossal squid has long been a mystery. The animals are not easy to observe because they can go down to ocean depths of 6,500 feet. What scientists do know from studying the bodies of a half dozen colossal squids is that they are fierce hunters.

          The recently captured colossal squid has been frozen to keep it for scientific study. It will be transported to New Zealand’s national museum, Te Papa, in the capital city of Wellington. Experts believe it to be the first adult male ever caught undamaged. Scientists hope to learn more about the colossal squid’s diet, behavior and reproductive(繁殖)patterns.

          “Scientists will be very interested in this amazing creature, ”said New Zealand Fisheries Minister Jim Anderson. “It adds immeasurably to our understanding of the marine environment. ”

          1. Why is it usually difficult for experts to observe the squid?

          A. Because it moves too fast                       B. Because it is too large.

          C. Because it is dangerous.                      D. Because it can go down to deep ocean.

          2. What can be inferred from the passage?

          A. The squid is from a science fiction story 

          B. The fishermen often meet colossal squids

          C. Scientists know much about the colossal squid. 

          D. The fishermen had some difficulty catching the large squid.

          3. What’s the purpose of catching such a huge squid?

          A. To make it into food  B. To set a world record 

          C. To do research on it  D. To display it for visitors

          4. What would be the best title for the passage?

          A. The biggest squid ever found                      B. Scientific research on squid

          C. The lifestyle of the colossal squid         D. How the fishermen caught the squid

           

          查看答案和解析>>

          閱讀下面短文,從短文后各題所給的四個(gè)選項(xiàng)A、B、C和D中,選出最佳選項(xiàng)。

          On Sunday morning, January 29, the call woke me up. It was the president of ABC News. “Lee, Bob has been __41__ in Iraq,” he said, choosing his words __42__. “He’s alive but he may have taken shrapnel (炮彈碎片) to the brain.”

          When I saw Bob in the hospital, nothing could have __43__ me. He was unconscious. His __44__ was swollen to the size of a rugby ball and a piece of his skull was missing. All sorts of __45__ were coming out of his body. His left eye looked like a dead fish. I tried to __46__ myself that he didn’t look that bad, that this was the __47__ and that he’d only get better from here.

          There were many months of treatment __48__. Every morning I would head over to the hospital and check on Bob. In the __49__ that a mother uses with her baby I would __50__ to him. I let him know about the kids. I told him stories about us and some of our best __51__ together. I brought music and had home movies for Bob to hear.

          One day when I pushed open the door as usual, I __52__. Bob was sitting up in bed, a huge smile on his face. He saw me and __53__ his hands in the air. “Hey, sweetie,” he said, “where have you been?” I tried to speak but no words came out. This was so much more than I’d wanted and prayed for, __54__ I couldn’t really believe it. My husband was __55__ and he was calling me. Half of me wanted to shout in __56__ and gratitude and half of me wanted to __57__ everything, how I’d been there day after day for months. I __58__ to him.

          Bob was __59__. He had the best medical treatment possible and the finest doctors. But the most important thing __60__ to be the love that held us close.

          1.                A.hidden         B.caught          C.disturbed D.wounded

           

          2.                A.seriously        B.carefully        C.a(chǎn)ctively   D.freely

           

          3.                A.pleased        B.damaged        C.prepared D.choked

           

          4.                A.a(chǎn)rm            B.head           C.leg  D.hand

           

          5.                A.tools           B.clothes         C.weapons D.tubes

           

          6.                A.convince        B.a(chǎn)ccept          C.suggest   D.imagine

           

          7.                A.best           B.worst           C.least     D.most

           

          8.                A.then           B.ever           C.before   D.a(chǎn)head

           

          9.                A.name          B.sound          C.voice D.a(chǎn)ir

           

          10.               A.talk            B.shout          C.point D.refer

           

          11.               A.dreams         B.memories       C.thoughts   D.secrets

           

          12.               A.froze          B.cried           C.failed     D.left

           

          13.               A.held           B.found          C.lifted D.seized

           

          14.               A.that           B.but            C.which     D.a(chǎn)nd

           

          15.               A.off            B.up             C.down     D.back

           

          16.               A.a(chǎn)nger          B.relief          C.faith D.detail

           

          17.               A.forget          B.follow          C.explain    D.check

           

          18.               A.waved         B.walked         C.moved    D.ran

           

          19.               A.fortunate       B.patient         C.generous D.powerful

           

          20.               A.turned up       B.turned out      C.took up    D.took out

           

           

          查看答案和解析>>

          1.C   2.A   3.B   4.D   5.C   6.B   7.D   8.C   9.B  10.A

            11.120°   12.3x+y-1=0   13.   14.10    15.100    16.(1),(4)

          17.解:(1)設(shè)拋物線,將(2,2)代入,得p=1. …………4分

          ∴y2=2x為所求的拋物線的方程.………………………………………………………5分

          (2)聯(lián)立 消去y,得到. ………………………………7分

          設(shè)AB的中點(diǎn)為,則

          ∴ 點(diǎn)到準(zhǔn)線l的距離.…………………………………9分

          ,…………………………11分

          ,故以AB為直徑的圓與準(zhǔn)線l相切.…………………… 12分

          (注:本題第(2)也可用拋物線的定義法證明)

          18.解:(1)在△ACF中,,即.………………………………5分

          .又,∴.…………………… 7分

          (2)

          . ……………………………14分

          (注:用坐標(biāo)法證明,同樣給分)

          19.

          解法一:(1)連OM,作OH⊥SM于H.

          ∵SM為斜高,∴M為BC的中點(diǎn),∴BC⊥OM.

          ∵BC⊥SM,∴BC⊥平面SMO.

          又OH⊥SM,∴OH⊥平面SBC.……… 2分

          由題意,得

          設(shè)SM=x,

          ,解之,即.………………… 5分

          (2)設(shè)面EBC∩SD=F,取AD中點(diǎn)N,連SN,設(shè)SN∩EF=Q.

          ∵AD∥BC,∴AD∥面BEFC.而面SAD∩面BEFC=EF,∴AD∥EF.

          又AD⊥SN,AD⊥NM,AD⊥面SMN.

          從而EF⊥面SMN,∴EF⊥QS,且EF⊥QM.

          ∴∠SQM為所求二面角的平面角,記為α.……… 7分

          由平幾知識,得

          ,∴

          ,即所求二面角為. ……………… 10分

          (3)存在一點(diǎn)P,使得OP⊥平面EBC.取SD的中點(diǎn)F,連FC,可得梯形EFCB,

          取AD的中點(diǎn)G,連SG,GM,得等腰三角形SGM,O為GM的中點(diǎn),

          設(shè)SG∩EF=H,則H是EF的中點(diǎn).

          連HM,則HM為平面EFCB與平面SGM的交線.

          又∵BC⊥SO,BC⊥GM,∴平面EFCB⊥平面SGM. …………… 12分

          在平面SGM中,過O作OQ⊥HM,由兩平面垂直的性質(zhì),可知OQ⊥平面EFCB.

          而OQ平面SOM,在平面SOM中,延長OQ必與SM相交于一點(diǎn),

          故存在一點(diǎn)P,使得OP⊥平面EBC. ……………………… 14分

            1.  

              ∵底面邊長為1,∴,

              ,

              .    ……………… 1分

              設(shè),

              平面SBC的一個(gè)法向量,

              ,

              ,

              ∴y=2h,n=(0,2h,1).… 3分

              =(0,1,0),由題意,得.解得

              ∴斜高. …………………………………………………… 5分

              (2)n=(0,2h,1)=,

              由對稱性,面SAD的一個(gè)法向量為n1. ………………………………6分

              設(shè)平面EBC的一個(gè)法向量n2=(x,y,1),由

              ,,得

               解得.………………… 8分

              設(shè)所求的銳二面角為α,則

              ,∴.…………… 10分

              (3)存在滿足題意的點(diǎn).證明如下:

              . ………………………… 11分

              ,令與n2共線,則. ……………… 13分

              .故存在P∈SM,使OP⊥面EBC.……………………… 14分

              20. 解:(1)當(dāng)n為奇數(shù)時(shí),an≥a,于是,. ………………3分

                       當(dāng)n為偶數(shù)時(shí),a-1≥1,且an≥a2,于是

              =. …………6分

              (2)∵,,∴公比.……9分

              . …………………………………………10分

              (注:如用求和公式,漏掉q=1的討論,扣1分)

               . ……………12分

              .……15分21.解:(1)∵,∴,∴. 1分

              ,即,∴. …3分

              ①當(dāng),即時(shí),上式不成立.………………………………………………4分

              ②當(dāng),即時(shí),.由條件,得到

              ,解得. ……………………………………………5分

              ,解得.…………………………………………6分

               m的取值范圍是. ………………………………………7分

              (2)有一個(gè)實(shí)根.………………………………………………………………………………9分

              ,即

              ,則

              ,. ………………………10分

               △>0,故有相異兩實(shí)根

              ,∴ 顯然,,

              ,∴,∴. …………12分

              于是

                                  

              為三次函數(shù)的極小值點(diǎn),故與x軸只有一個(gè)交點(diǎn).

              ∴  方程只有一個(gè)實(shí)根.…………………………15分

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