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達(dá)志中學(xué)高三年英語單項練習(xí)2009-4-15

1. Because of ____ high demand for Type AB blood, _____supplies of it are usually limited.

A. the; the B. 不填; 不填     C. 不填; the          D. a; the        

2.The_________ flights between the mainland of China and Taiwan will benefit more travellers.

3.It’s required that some activities _________to celebrate the 30th anniversary of the reform and opening up.

 A. should hold       B. are held      C. be held    D. will be held

4.― Mum, it’s hopeless to improve my English because of my failure in this English test again.

―_________. Go on trying , and you’ll do better next time.

A. Don’t lose heart     B. That’s right C. It’s just like you          D. You are really a wet blanket

5.To my surprise, my good friend _________ stay up to study to prepare for the next important exams organized by ten famous high schools .

A. should           B. may             C. must               D. Can

6.The incident of Sanlu milk powder happened in September,2008 , _________ many countries in the world paid close attention to.

 A. that        B. when          C. which                    D. what

7.President Hu Jintao visited the museum of Xiaogang Village in Anhui in November, 2008. It was the first time that he _________ here .

A. came      B. had come        C. has come         D. has been coming 

8. ―Yang Liang has got a very good job in Chery Automobile Company, Ltd. .

    ― _________ he looks that happy .

A.It’s certain B.That’s because C.No doubt            D.No wonder

9. Hefei’s people have built a monument ______ those who devoted themselves to the development of New Hefei.

A. in honour of      B. in favor of    C. in search of    D. in need of

10. The song You And Me _________ on the radio interests everyone.

A. playing     B. played    C. is played              D. has been played

11.Liu Qian, a magician from Taiwan, ______audience of thousands on the CCTV Spring Festival Show.

A. appealed to       B. applied for C. approved of    D. appointed with

12. ___ wise nation is one good at learning, especially __that is good at learning from difficulties.

       A. the one B. The; on  C. A; one  D. The; the one

13. ---- What do you think of the film Hero directed by Zhang Yimou?

   ---- _______. I can’t think too highly of it.

A. It’s really something    B. It all depends    C. It’s just so-so         D. It’s really boring

14 I _______ to help you with your homework but I couldn’t spare any time. I _______ a composition last night and I’ll finish it today.

A. wanted; was writing   B. wanted; wrote    C. have wanted; wrote   D. had wanted; was writing

15  ---- You shouldn’t have talked back to our teacher like that.It was awfully impolite.

    ---- You are right.I _______ crazy at that moment.

A. must have been      B. might be  C. could have been      D. should have been

16 I’m glad to introduce Mr. Smith to you, without ______consideration our project would have ended in failure.

       A. whom         B. his        C. whose       D. who

17. How long do you think ________the computer company launches a new model?

 A. it will be before B. will it be until C. will it be when D. it will be that

18. The data shows ______ successful people have in common is _______they have perseverance.

A. that that, that   B. that what, that   C. what that, what      D. all that, because

19. Smith was overweight, so the doctor urged that not only ___have less fat and meat, but also he _____.

       A. should he; take exercise          B. ought he; take exercise

       C. he should; takes exercise        D. he ought; takes exercise

20. What a pity! I ______ in Hainan two more days, but something urgent needed to be dealt with back home.

A. must have stayed              B. needn’t have stayed 

C. may have stayed              D. could have stayed

21. ---I told him to take___he considered helpful to him and his family from everything __I was having then.        ----You were really kind to him.

     A. what; what      B. what; whichever    C. whatever; that    D. whichever; that

22. Having lived in town for quite a  few years, Mr. Green no longer felt ________ among the local people.

       A. out of order             B. out of place         C. out of control      D. out of question

23. Someone ______ up your seat to the lady with a baby, please.

     A.will give       B. would give       C. gives            D. give 

24. The further falling of the stock market as reported today has     a fresh wave of selling.

       A. set off           B. given off         C. put off                    D. got off

25.______ the best in a science competition, the three students were awarded scholarships totaling $ 21, 000.

       A. To be judged       B. Judged          C. Having judged       D. Judging

26. ― If you have any question, please feel free to call us.

― Thank you, Mr. Anderson. I certainly ______.

   A. should           B. can             C. will             D. shall

27 Research shows pet owners visit the doctor less often and experience less sleeping difficulties than ______ without a four-legged friend.

   A. ones             B. those           C. who             D. that

28. There might be different views on music but one fact cannot be ignored ______ it has a great effect on our emotions.

A. that             B. which           C. what            D. why

29Laboratory safety training is mainly to make the people ______ in a laboratory aware of the possible dangers that may threaten them.

A. working          B. work            C. to work         D. worked

30 The volunteers who help the homeless children believe that every person has something to give in return for what ______.

    A. has received       B. has been received   C. will receive      D. will be received

31. Times are changing and the world is not as safe as it once was, ______ is one reason many children have a cell phone with them.

    A. what             B. who             C. that             D. which

32 ― I’m going to the skating rink, Mrs. Jenkins. Are you driving that way?

―Not exactly. But __I drop you off at the corner of Main Street? It’s only a few blocks away.

 A. how about         B. what if           C. so what          D. why not

33. With my Christmas shopping all ______ care of, I am currently enjoying the benefits of being at home.

A. to take            B.  to be taken       C. taken            D. taking

34 It wasn’t ______ years later that pizzas were introduced and soon became popular in the United States.

A. until             B. after             C. before           D. when

35 There’s probably ______ no simpler way to lose ______ weight than to stop watching television.

A. a; 不填          B. a; the             C. 不填; 不填      D. 不填; the

36. Sometimes we become so focused on getting things done that we ______ to give ourselves a break.

A. have forgotten     B. had forgotten       C. forgot           D. forget

37. The first time I wrote a short story I was proud of, she read it to the class because she knew it needed ______.

A. to be shared       B. being shared        C. to share          D. shared

38. People talked much about the film. There was no obvious reason why it could not be ______ the original.

A. a as good film as   B. a as film good as    C. as a good film as   D. as good a film as

39 You must spend less time on the baseball field and ______ doing homework. Your grades aren’t too good, as you know.

A. much             B. many             C. more            D. most

40.The novel was completed in 1978,       the economic system has seen great changes

    A.when         B.during which   C since then       D .since when

41.Stella, you       things about, Look, what a mess in your room!

A always throw  B have always throw  C are always throwing  D have always been throwing

42.A truly creative person can tell the same story time after time and still       with fresh ideas.

A come along         B come on C come up           D come out

43.Jack must be worried about something You can       it from the look on his face,

A regard             B recognize          C read          D realize

44. -Steve        come back because the window is opened.

-Yes , but he          left it open last night

A must have; might have  B might have ; can’t have C can have ; should have D might ; must have

45.-I’ve passed the driving test!

       

A Well done!     B I am afraid not. C That will do !      D I’m glad to

46.After having gone,           far, George did not want to turn back.

    A? enough          B.much            C.such             D.that

47.一Is Mike a diligent student?

    一No, but he is a lazy one, if         

    A? anything         B.something        C everything         D.nothing

48.Would you like         knife and fork.Or would you other use          chopsticks,sir?

    A.the:the            B.a(chǎn):不填    C.不填:the          D.the:the

49.What a table! I’ve never seen such a thing before.It is         it is long.

   A.half not as wide as                B.wide not as half as

   C.not half as wide as                D.a(chǎn)s wide as not half

50.This is a very interesting book.I’11 buy it         

  A.how much may it cost                B.it may cost

  C.however much it may cost             D.how may it cost

51.There is a real possibility that these animals could be frightened.    a sudden loud noise.  

   A.being there     B.should there be   C.there was       D.there having been

52.Even           foreigners know that 2009 is the Year of the Ox in China.

       A./                         B.the                      C.a(chǎn)n                       C.a(chǎn)

53.With so many approaches to study foreign languages,never          so much fun.

       A.have learning been                              B.learning has been

       C.has learning been                                D.learning have been

52.一Please keep off the grass.

一Sorry. I didn’t          the sign.

       A.watch                 B.notice                 C.note                    D.realize

55.一Mom, will you be back         dinner before six o’clock?

―I’ll try to. But maybe a bit later than that.

       A.during                B.a(chǎn)t                       C.to                      D.for

56.―Remember the first time we met on the campus,Sharon?

―Of course,I do.You         a lecture to the freshmen.

       A.would give       B.were giving      C.gave                   D.a(chǎn)re giving

57.People must be familiar with this product,as they constantly see it         on TV.

       A.a(chǎn)dvertise             B.a(chǎn)dvertising       C.a(chǎn)dvertised           D.to advertise

58.―Is there anything else I can do for you,Jack?

―No,thanks.I really appreciate       when you lent all your notes to me before the exam.

       A.it                        B.one                    C.this                     D.that

59.一Mr. Smith,you are wanted on the phone.

―Thank you.         no one knows I’m here.

       A.For                    B.And                   C.But                    D.So

60.Once formed,bad habits are hard to         .

       A.get hold of    B.get used to            C.get rid of            D.get along with

61.Many fans have been waiting outside the hotel for hours just       a look at the movie star.

       A.have                   B.having                C.had                     D.to have

62.―Have the traffic police caught the driver?

―Yes. He         only two hours after the accident occurred.

       A.was caught          B.caught                 C.has caught           D.has caught

63.     is generally the case, those who care for the weakest members of society are respected.

       A.Which                B.That                    C.What                  D.As

64.―Do you know where the headmaster is? I have something urgent.

―Oh, he         have gone far, for his computer is still on in the office.

       A.won’t                 B.mustn’t               C.can’t                   D.wouldn’t

65.       she didn’t win the game,she was still happy because she had made it into the finals.

       A.As                      B.Although          C.Because              D.If

66. _______ Hong Kong Film Festival, whose current edition runs until April _______ 13th 2009, has also struggled among fresh competition.

A. /, the                         B. A, the               C. The, /                       D. /, /

67. ---- I’ve never found a better job.

   ---- _______!

       A. Life is hard         B. Don’t worry   C. Congratulations  D. Sorry to hear that

68. If a computer crashes,you will lose the file you         on unless you save it regularly.
A. are working         B. work                        C. will work                 D. worked

69. The number 5.12 is a special number, ______, I think, that will be remembered

by all the people in Sichuan Province.

A. what                 B. one                    C. which           D. it

70. Ella made a mistake, but then she corrected the situation ______ it got worse.

A. where                B. before               C. until                 D. when

71 The global economic slowdown _______ millions of guest workers jobless has caused thousands of firms to close down this year,

A. left          B. having left            C. to leave                 D. leaving

72. ---- What were you trying to prove to the police? 

---- _______ I was last night.

      A. That                 B. When                C. Where                     D. What

73. Women think it is men’s business to earn money and theirs to spend it ――______, during their husbands’ life, but, at any rate, after husbands’ death.
A. if possible                  B. if so                         C. if any                       D. if ever

74. ---- Who are making so much noise in the street?

     ---- _______ the children of the Clintons.

       A. They are                  B. It is                         C. There are              D. That is

75. They had meant to catch the 10:20 train, but _______ it was gone.

A. found                 B. had found                 C. were finding         D. would find

76. How I wish I could _____my ideas in simple and wonderful English when chatting on the net!

    A. set up                        B. set off               C. set over                D. set out

7. It isn’t cold enough for there _______ a snow tonight, so I can leave my car outside instead of in the garage.

     A. to be                         B. would be                  C. is going to be            D. being

78 You ______ pay too much attention to your reading skills, as it is so important.

    A. must                  B. shouldn’t                  C. cannot                     D. need

79 What have you got _______ will help a cold?

    A. what                         B. that              C. it                            D. who

80. The flying car Transition can travel at speeds up to 115 mph for 450 miles in the air, _______ at highway speeds on the ground, and fold up to fit in a standard garage .

A. driving                     B. drive                        C. to drive                    D. driven

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1DDCAA   6;CBDAB  11ACADA  16CABAD

21CBDBA  26 CBAAB  31DBCAC  36DADCD

41 CCCAA  46DABCC  51BACBD  56BCACC

61DADCB  66CCABB71 DCABA    76 DACBB

試題詳情

學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

湖南省2009屆高三?十二校聯(lián)考第一次考試學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

語文試卷學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

總分:150分   時量150分鐘  學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

長郡中學(xué)  衡陽八中  永州四中  岳陽縣一中  湘潭縣一中  湘西民中

石門一中  澧縣一中  郴州一中  益陽市一中  桃源縣一中  株洲二中

由                                                                   聯(lián)合命題學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

試題詳情

湖南省2009屆高三十二校聯(lián)考第一次考試學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

生 物 試 卷     學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

總分:70分   時量:90分鐘     2009年3月8日   10:00--11:30學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

聯(lián)合命題

            隆回一中;澧縣一中;郴州一中;益陽市一中;桃源縣一中;株洲市二中學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

第Ⅰ卷(選擇題  共30分)學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

試題詳情

湖南省2009屆高三十二校聯(lián)考第一次考試學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

物  理  試  卷學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

總分:120分  時量:90分鐘  2009年3月7日學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

長郡中學(xué);衡陽八中;永州四中;岳陽縣一中;湘潭縣一中;湘西州民中

石門一中;澧縣一中;郴州一中;益陽市一中;桃源縣一中;株洲市二中

       由                                                         聯(lián)合命題學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

  學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

試題詳情

湖南省2009屆高三  十二校聯(lián)考  第一次考試學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

理科數(shù)學(xué)試卷學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

總分:100分  時量:90分鐘  2009年3月8日學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

長郡中學(xué);衡陽八中;永州四中;岳陽縣一中;湘潭縣一中;湘西州民中

石門一中;澧縣一中;郴州一中;益陽市一中;桃源縣一中;株洲市二中

       由                                                           聯(lián)合命題學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

試題詳情

湖南省2009屆高三十二校聯(lián)考第一次考試學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

化 學(xué) 試 卷學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

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    聯(lián)合命題

     

    長郡中學(xué);衡陽八中;永州四中;岳陽縣一中;湘潭縣一中;湘西州民中學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

    石門一中;澧縣一中;郴州一中;益陽市一中;桃源縣一中;株洲市二中學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

    可能用到的相對原子質(zhì)量:H:1  C:12  O:16 Na:23 S:32 Fe:56學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

    第Ⅰ卷 (共48分)學(xué)科網(wǎng)(Zxxk.Com)學(xué)科網(wǎng)

    試題詳情

    銅陵市第三中學(xué)2009屆高三第八次月考理科綜合能力測試

    本試卷共8頁,滿分300分,考試時間:2009年5月3號上午9:00―11:30

    ★?荚嚦晒Α

    注意事項:

    1.本科目嚴(yán)禁使用計算器和相關(guān)電子產(chǎn)品,否則按作弊處理。

    2.答卷前,考生務(wù)必將自己的姓名,準(zhǔn)考證號填寫在試題卷和答題卡上。

    3.選擇題每小題選出答案后,用2B鉛筆將答案填涂在答題卡對應(yīng)題目的答案標(biāo)號上,如需改動,用橡皮擦干凈后,再選涂其它答案標(biāo)號,答在試題卷上無效。

    4.非選擇題在答題卡上每題對應(yīng)的答題區(qū)域內(nèi)作答,答在試題卷上無效。

    5.考試結(jié)束,請將選擇題答題卡和非選擇題答題卡一并上交。

    原子量:

       H:1      C:12      O:16      Fe:56        N:14

    選擇題 (共20題,每小題6分,共120分)

    試題詳情

    江蘇省如皋市2009屆高三第一次統(tǒng)一考試

    地理試卷(選修)

    時間100分鐘      分值120分

     

    注意事項

    1.答卷前,考生務(wù)必用黑色字跡的鋼筆或簽字筆將自己的姓名和考試號填寫在答題卡上。用2B鉛筆將考試號和科目填涂在答題卡相應(yīng)位置處。

        2.選擇題每小題選出答案后,用2B鉛筆把答題卡上對應(yīng)題目的答案標(biāo)號涂黑,如需改動,用橡皮擦干凈后,再選涂其他答案,答案不能答在試卷上。

        3.非選擇題必須用黑色簽字筆作答,答案必須寫在答題紙各題目指定區(qū)域內(nèi)相應(yīng)位置上;如需改動,先劃掉原來的答案,然后再寫上新的答案;不準(zhǔn)使用鉛筆和涂改液。不按以上要求作答的答案無效。

        4.考生必須保持答題卡的整潔,考試結(jié)束后,將答題紙和答題卡一并交回。

    第一卷

    試題詳情

    天津市南開中學(xué)2009屆高三高考模擬

    理科綜合

    本試卷分第1卷(選擇題)和第Ⅱ卷兩部分,共300分。

    考試用時150分鐘。考試結(jié)束后,將試卷II和答題卡一并交回。

    第Ⅰ卷

    (選擇題共21題,每題6分共126分)

    注意事項:

    1.答第1卷前,考生務(wù)必將自己的姓名、準(zhǔn)考號、科目涂寫在答題卡上,并在規(guī)定位置粘貼考試用條形碼。

    2.每小題選出答案后,用鉛筆把答題卡上對應(yīng)題目的答案標(biāo)號涂黑。如需改動,用橡皮擦干凈后,再選涂其他答案標(biāo)號。答在試卷上的無效。

    在下列各題的四個選項中,只有一個選項是最符合題目要求的。

    以下數(shù)據(jù)可供解題時參考:

    相對原子質(zhì)量:  H1    C12    016    Na23    P 31

     

    1、 種子植物最典型的特征是依靠種子繁殖。下列關(guān)于種子繁殖特點的敘述正確的是 (  )

        A.后代適應(yīng)環(huán)境的生活力較強并可能出現(xiàn)較多的變異

        B.能使后代保持親本的優(yōu)良性狀,不易發(fā)生性狀分離

        C.繁殖速度快,有利于人工選擇后的品種大規(guī)模的繁殖

        D.基因重組和突變的頻率高,能夠產(chǎn)生新的優(yōu)良品種

     

    2、某生物興趣小組對某小學(xué)調(diào)查了人的眼瞼遺傳情況,對調(diào)查結(jié)果進(jìn)行匯總和整理,見下表:

    子代類型

    雙親全為雙眼皮

    (①)

    雙親中只有一個為雙眼皮(②)

    雙親全為單眼皮

    (③)

    雙眼皮數(shù)

    536

    550

    單眼皮數(shù)

    321

    553

    全部子代均為單眼皮

     

    根據(jù)上表中的數(shù)據(jù),下列說法正確的是(  )

    A.根據(jù)①可以判斷雙眼皮為顯性性狀,且雙親為雜合體;

    B.根據(jù)上表中的數(shù)據(jù)可以判斷子代數(shù)量553數(shù)據(jù)是一個錯誤數(shù)據(jù);

    C.根據(jù)③可以判斷雙眼皮為顯性性狀,且雙親為純合體;

    D.根據(jù)①可以判斷雙眼皮為顯性性狀,且雙親可為純合體;

    3、右圖表示某二倍體生物正在進(jìn)行分裂的細(xì)胞,關(guān)于此圖的說法正確的是  ( )

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

     

    A.是次級精母細(xì)胞,處于減數(shù)分裂第二次分裂后期    

    B.含同源染色體2對、DNA分子4個、染色單體0個

    C.正在進(jìn)行等位基因分離、非等位基因自由組合

    D.每個子細(xì)胞含一個染色體組,僅1個具有生殖功能

     

    4.下列關(guān)于動物代謝的敘述中,不正確的是              

    A.嚴(yán)重缺鐵的病人可能會出現(xiàn)乳酸中毒

    B.若某人一次過多地攝入蛋白質(zhì),則消化吸收后多余的氨基酸可以在生物體內(nèi)貯存

    C.某兒童偏食,其食物中長期缺乏一種必需氨基酸,即使長得較胖,其免疫力也比同齡正常兒童低

    D.長期吃富含磷脂的食物可以預(yù)防脂肪肝的發(fā)生

    5.下列說法正確的有幾項

    ①青蛙的原腸胚細(xì)胞和囊胚細(xì)胞所含DNA、RNA及蛋白質(zhì)的結(jié)構(gòu)相同 

    ②蠶豆種子中和卵生動物受精卵中卵黃功能相似的結(jié)構(gòu)是由頂細(xì)胞發(fā)育而來的

    ③自養(yǎng)需氧型生物的細(xì)胞結(jié)構(gòu)一定具有葉綠體 

    ④被子植物的個體發(fā)育過程可以分為胚的發(fā)育和胚乳的發(fā)育

    ⑤玉米和羊的受精卵發(fā)育成8細(xì)胞的球狀胚體都需進(jìn)行3次有絲分裂  

    ⑥狼在追捕獵物的過程中,興奮在運動神經(jīng)纖維上的傳導(dǎo)是雙向的  

    ⑦經(jīng)過復(fù)制后的同源染色體都能夠形成四分體

    A.一項               B.二項            C.三項            D.四項

    6.洋蔥的鱗片葉屬于著生在地下莖上的一種變態(tài)葉,利用其外表皮細(xì)胞在光照下進(jìn)行質(zhì)壁分離和復(fù)原實驗效果明顯,此時蓋玻片下的紫色細(xì)胞可以進(jìn)行(   )

    A.蒸騰作用       B.呼吸作用       C.化能合成作用     D.光合作用

    7、下列敘述正確的是(    )

    A.直徑介于 1nm ~ 100nm 之間的微粒被稱為膠體

    B.電泳現(xiàn)象可以證明膠體屬于電解質(zhì)溶液

    C.利用丁達(dá)爾效應(yīng)可以區(qū)別溶液與膠體           

    D.膠體粒子很小,可以透過濾紙和半透膜

     

    8、下列離子能在溶液中大量共存,但將溶液的 pH值調(diào)節(jié)至 0.3時就會出現(xiàn)渾濁的是(    )

    A. Al3、 K、 I、 SiO32       B. Fe2、Fe3、NH4、NO3

    C.  Na、I、CO32、NO3         D.A13、 HCO3、 OH、 Na

    9、已知3.6 g碳在6.4 g的氧氣中燃燒,至反應(yīng)物耗盡,并放出X kJ熱量。已知單質(zhì)碳的燃燒熱為Y kJ/mol,則1mol C與O2反應(yīng)生成CO的反應(yīng)熱△H為               (    )

        A.-Y kJ/mol                   B.(0.5Y ­―5X) kJ/mol  

    C.-(5X-0.5Y) kJ/mol           D.+(10X-Y) kJ/mol  

     

    10、某化學(xué)科研小組研究在其他條件不變時,改變某一條件對A2(g)+3B2(g)高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。2AB3(g)化學(xué)平衡狀態(tài)的影響,得到如下圖所示的變化規(guī)律(圖中T表示溫度,n表示物質(zhì)的量),根據(jù)如圖可得出的判斷結(jié)論正確的是(            )

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。A.正反應(yīng)一定是放熱反應(yīng)

    B.達(dá)到平衡時A2的轉(zhuǎn)化率大小為:b>a>c

    C.正反應(yīng)一定是吸熱反應(yīng),且T2>T1

    D.b點時,平衡體系中A、B原子數(shù)之比接近1∶3

     

    11、潔凈煤技術(shù)是煤炭工業(yè)的綠色化學(xué)技術(shù),2008年我國將建成百萬噸級的煤間接液化大型企業(yè)。所謂轉(zhuǎn)化技術(shù)包括直接氣化,即熱裂為碳、一氧化碳和氫氣,煤間接液化技術(shù)是將煤轉(zhuǎn)化為合成氣CO和H2,在催化劑作用下控制CO和H2的比例可合成煤油、汽油等500多種化工產(chǎn)品,下列說法不正確的是                                     (    )

    A.推行煤間接液化技術(shù),有利于保護(hù)環(huán)境和社會可持續(xù)發(fā)展

        B.合成甲醇時應(yīng)控制n(CO):n(H2)=1:2

        C.若汽油的平均組成表示為CaHb,則合成汽油時,應(yīng)控制n(CO):n(H2)=2a:(b+2a)

        D.設(shè)某長焰煤平均組成為C1000H847O794,lmol這種組成物直接熱解可得CO1000mol

     

    12、液態(tài)鋰離子電池是指Li+嵌入化合物為正負(fù)電極的二次電池。正極采用鋰化合物L(fēng)iCoO2,負(fù)極采用碳電極,充電后成為鋰-碳層間化合物L(fēng)ixC6(0<x≤1),電解質(zhì)為溶解有鋰鹽LiPF6、LiAsF6等的有機溶液。下列有關(guān)說法不正確的是                      (    )

    A.將LiCoO2改寫為氧化物的形式為Li­2O?Co2O3

    B.該電池的電解液使用有機溶劑的原因是有機溶劑有良好的導(dǎo)電性

    C.Li是第3號元素,是地球上最輕的金屬,該電池具有比較好的質(zhì)能比

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。D.在電池放電時,Li+在兩個電極之間往返嵌入和脫嵌。該電池的充放電反應(yīng)方程式:LiCoO2+6C    Li1-xCoO2+LixC6。

     

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。13、得重感冒之后,常吃一種抗生素­――頭孢氨芐,分子式:C16H17N3O4S?H2O,其化學(xué)結(jié)構(gòu)式為:

     

     

     

     

    有關(guān)其說法正確的是  (    )

    A.在一定條件下,能發(fā)生水解反應(yīng)生成氨基酸

    B.1mol該分子最多能與7molH2反應(yīng)

    C.該分子能與碳酸鈉反應(yīng),不能與鹽酸反應(yīng)

    D.頭孢氨芐易溶水,能使溴水褪色

    14、若以高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。表示水的摩爾質(zhì)量,v表示在標(biāo)準(zhǔn)狀態(tài)下水蒸氣的摩爾體積,高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。為在標(biāo)準(zhǔn)狀態(tài)下水蒸氣的密度,NA為阿伏加德羅常數(shù),m、△分別表示每個水分子的質(zhì)量和體積,下面是四個關(guān)系式:

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。    ② 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。 ③ 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。  ④ 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。 其中(   )

           A. ①和②都是正確的                        B. ①和③都是正確的

           C. ②和④都是正確的                        D. ①和④都是正確的

    15、如圖所示,這是工業(yè)生產(chǎn)中大部分光電控制設(shè)備用到的光控繼電器的示意圖,它由電源、光電管、放大器、電磁繼電器等幾部分組成,當(dāng)用綠光照射光電管的陰極K時,可以發(fā)生光電效應(yīng),則下列說法正確的是(    )

    A. 示意圖中,a端應(yīng)是電源的負(fù)極

    B. 放大器的作用是將光電管中產(chǎn)生的電流放大后,使鐵芯M磁化,將銜鐵N吸住

    C. 若增大綠光的照射強度,光電子最大初動能增大

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。D. 改用紅光照射光電管陰極K時,電路中一定有光電流

     

     

     

     

     

     

    16、在勻強磁場中有一個靜止的氡原子核(高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。),由于衰變它放射出一個粒子,此粒子的徑跡與反沖核的徑跡是兩個相外切的圓,大圓與小圓的直徑之比為42:1,如圖所示。那么氡核的衰變方程應(yīng)是下列方程的哪一個(    )

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。17、如圖所示,不可伸長的輕繩一端固定于墻上O點,拉力F通過一輕質(zhì)定滑輪和輕質(zhì)動滑輪作用于繩另一端,則重物m在力F的作用下緩慢上升的過程中,拉力F變化為(不計一切摩擦)(    )

    A. 變大 B. 變小 C. 不變 D. 無法確定

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。18、固定在豎直平面的光滑圓弧軌道ABCD,其A點與圓心O等高,D點為軌道最高點,DB為豎直直線,AC為水平線,AE為水平面,如下圖所示。今使小球自A點正上方某處由靜止釋放,且從A點進(jìn)入圓軌道,只要適當(dāng)調(diào)節(jié)釋放點的高度,總能使球通過最高點D,則小球通過D點后:(    )

    A. 一定會落到水平面AE上

    B. 可能從A點又進(jìn)入圓軌道

    C. 可能撞在圓軌道AB間某位置

    D. 可能從D點自由下落

    19、一列簡諧橫波沿x軸負(fù)方向傳播,如圖(甲)所示,是t=1s時的波形圖,圖(乙)是波中某振動質(zhì)元位移隨時間變化的振動圖線(兩圖用同一時間起點),則(乙)可能是圖(甲)中哪個質(zhì)元的振動圖線(    )

    A. x=0處的質(zhì)元                

    B. x=1m處的質(zhì)元 ?

    C. x=2m處的質(zhì)元                  

    D. x=3m處的質(zhì)元

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。     高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。20、 如圖所示,虛線是用實驗方法描繪出的某一靜電場的一族等勢線及其電勢值,一帶電粒子只在電場力的作用下飛經(jīng)該電場時,恰能沿圖中的實線從A點飛到B點,則下列判斷正確的是(    )

    A. 粒子一定帶負(fù)電

    B. A點的場強大于B點的場強

    C. 粒子在A點的電勢能大于在B點的電勢能

    D. 粒子在A點的動能小于在B點的動能

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。21、如圖所示,水平方向的勻強電場和勻強磁場互相垂直,豎直的絕緣桿上套一帶負(fù)電荷小環(huán)。小環(huán)由靜止開始下落的過程中,所受摩擦力(    )

           A. 始終不變

           B. 不斷增大后來不變

           C. 不斷減小最后為零

           D. 先減小后增大,最后不變

     

     

    文本框: 班級________________________姓名_____________________________準(zhǔn)考證號______________________________________高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。2.用鋼筆或圓珠筆直接答在試卷上。

    22、(1)使用如圖(a)所示的裝置驗證機械能守恒定律,打出一條紙帶如圖(b)所示。圖(b)中O是打出的第一個點跡,A、B、C、D、E、F……是依次打出的點跡,量出OE間的距離為L,DF間的距離為S,已知打點計時器打點的周期是T。

     

     

     

     

    上述物理量如果在實驗誤差允許的范圍內(nèi)滿足關(guān)系式_________,即驗證了重錘下落過程中機械能是守恒的。

    (2)把某一直角玻璃棱鏡AOB平放在坐標(biāo)紙上,如圖所示,用一細(xì)紅光束掠過紙面從C點入射,經(jīng)AO面反射和折射后,反射光線和折射光線與x軸交于D、E兩點。C、D、E三點的坐標(biāo)分別為(0,12)、(-9,0)、(16,0)。由此可以計算出該棱鏡材料對紅光的折射率為(     )

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。A. 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。   B. 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。   

    C. 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。   D. 高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

     

    (3)一個簡單的多用電表的電路圖如下圖所示,若黑表筆做為電表的公共端,紅表筆通過轉(zhuǎn)換開關(guān)接入待測量相應(yīng)的測量端,使用時,只有部分電路起作用。

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。當(dāng)轉(zhuǎn)換開關(guān)接1或2時,此多用電表為____________表,當(dāng)轉(zhuǎn)換開關(guān)接3或4時,此多用電表為___________表,當(dāng)轉(zhuǎn)換開關(guān)接5時,此多用電表為_______表,若靈敏電流計高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。的滿偏電流Ig=lmA,內(nèi)阻Rg=高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。,R1=高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。,當(dāng)轉(zhuǎn)換開關(guān)接2時,此多用電表的量程為_____________。

     

     

     

     

     

     

    23.(16分)如圖所示,長12m,質(zhì)量為50kg的木板右端有一立柱,木板置于水平地面上,木板與地面間的動摩擦因數(shù)為0.1,質(zhì)量為50kg的人立于木板左端,木板與人均靜止,當(dāng)人以4m/s2的加速度勻加速向右奔跑至板的右端時立即抱住木柱,試求:(g=10m/s2

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。⑴人在奔跑過程中受到的摩擦力的大小

    ⑵人從開始奔跑至到達(dá)木板右端所經(jīng)歷的時間

    ⑶人抱住木柱后,木板向什么方向滑動?滑行多遠(yuǎn)的距離?

     

     

     

     

     

     

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。24.(18分)一質(zhì)量為M=1Kg的小車上固定有一質(zhì)量為m=0.2Kg,寬L=0.25m、電阻R=100Ω的100匝的矩形線圈,一起靜止在光滑水平面上,現(xiàn)有一質(zhì)量為m0的子彈以V0=250m/s的水平速度射入小車中,并隨小車線圈一起進(jìn)入一與線圈平面垂直,磁感應(yīng)強度B=1.0T的水平勻強磁場中如圖,小車運動過程中的V---S圖象如圖。求:(1)子彈的質(zhì)量;(2)圖中S = 80cm時線圈中的電流強度;(3)在進(jìn)入過程中通過線圈某一截面的電量;(4)求出線圈小車通過磁場的過程中線圈電阻的發(fā)熱量。

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    25.(22分)如圖所示,一質(zhì)量為m,帶電量為+q的粒子以速度高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。從O點沿y軸正方向射入磁感應(yīng)強度為B的圓形勻強磁場區(qū)域,磁場方向垂直紙面向外,粒子飛出磁場區(qū)域后,從點b處穿過x軸,速度方向與x軸正方向的夾角為高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。,同時進(jìn)入場強為E,方向與x軸負(fù)方向成高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。角斜向下的勻強電場中,并通過了b點正下方的c點,粒子重力不計,試求:

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。(1)b點與O點的距離;

    (2)圓形勻強磁場區(qū)域的最小半徑;

    (3)C點到b點的距離。

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    26、次磷酸(H3PO2)是一種強還原性弱酸,它能發(fā)生下列反應(yīng):

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。 

     

     

     

     

     

    ⑴ CuX中X表示一種元素的離子,該離子的電子式為                     

     

    ⑵已知CuX是不溶于水的固體,寫出反應(yīng)(1)的化學(xué)方程式                                                   

     

    ⑶ 反應(yīng)(2)中被氧化的元素名稱                         ,

     

    ⑷ 反應(yīng)(2)中,當(dāng)有0.5molCuX被氧化時,轉(zhuǎn)移的電子數(shù)目為           個。

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。27、某化學(xué)課外活動小組學(xué)生用圖所示的裝置研究P2O5能否干燥HCl氣體。實驗步驟為:①檢驗裝置的氣密性;②稱量B、C、D、E、F(含連接的橡膠塞和玻璃管)儀器的質(zhì)量(數(shù)據(jù)見下表),取58.5 g NaCl和足量濃硫酸;③迅速加入藥品,連接好裝置,反應(yīng)開始,使干燥劑與氣體充分作用;④當(dāng)F內(nèi)堿石灰由紅色變?yōu)辄S色時停止加熱,冷卻后稱量B、C、D、E、F(含連接的橡膠塞和玻璃管)儀器的質(zhì)量并記錄數(shù)據(jù)。

     

     

     

     

     

     

     

    稱量質(zhì)量(g)

    B

    C

    D

    E

    F

    儀器的質(zhì)量

    145.0

    171.8

    44.0

    38.4

    34.0

    反應(yīng)前儀器加干燥劑的質(zhì)量

    237.5

    296.5

    52.4

    49.5

    40.3

    反應(yīng)后儀器加干燥劑的質(zhì)量

    237.7

    296.5

    52.5

    49.5

    60.8

     

    試回答:(1)B少量增重的原因是_________________________________________

    (2)D極少量增重的原因可能是

    __                           ________________________________________

    (3)F增重的原因是______________________________________________,F(xiàn)最大增重應(yīng)是_______________________________

    (4)通過上述實驗,說明P2O5 能否干燥HCl氣體________________________________。

     

     

     

     

    28、如下圖,某藥用芳香族化合物A(C9H10O3)在苯環(huán)上發(fā)生硝化反應(yīng)時可生成四種一硝基取代物,H是白色沉淀,J是高分子化合物,由I通過加聚反應(yīng)合成,J不能使溴水褪色。

    已知無水醋酸鈉與堿石灰共熱可發(fā)生如下反應(yīng):

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。
     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

     

    回答下列問題

    (1)①②③三個反應(yīng)中,屬于取代反應(yīng)的是(填反應(yīng)代號)______________________,反應(yīng)③的條件是_________________________

    (2)寫出下列物質(zhì)的結(jié)構(gòu)簡式:

    H_____________                            ___________ 

    J________                                ______________

    (3)寫出反應(yīng)①的化學(xué)方程式

    ______________________________________________________

    (4)若n=2時化合物E的結(jié)構(gòu)簡式可能為

    _____________________________________________

     

     

     

     

     

    29、Xe是稀有氣體,最外層8個電子,化學(xué)性質(zhì)相對穩(wěn)定,它可以和O、F等通過共用電子對形成化合物,而顯示出氧化性,在氧化還原反應(yīng)中往往被還原到穩(wěn)定價態(tài),F(xiàn)用2份等質(zhì)量的XeF2和XeF4混合物進(jìn)行如下實驗:

    (1)一份用水處理,得到氣體A 和溶液B,A 的體積為56.7 mL(標(biāo)準(zhǔn)狀況,下同),其中含O2 22.7 mL,余為Xe。B中的XeO3能氧化30.0mL濃度為0.100mol/L的(NH4)2Fe(SO4)2。

    (2)另一份用KI溶液處理,生成的I2被0.200mol/L Na2S2O3滴定,用去Na2S2O3 35.0mL。

    求混合物中XeF2和XeF4各自的物質(zhì)的量。

    已知I2+2S2O32=2I+S4O62。

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    文本框: 班級________________________姓名_____________________________準(zhǔn)考證號______________________________________高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。 

     

     

     

     

     

     

    圖解中E代表蛋白質(zhì)等有機物,則A代表的物質(zhì)是        ,C代表的物質(zhì)是        ,D代表的物質(zhì)是        。物質(zhì)G是指根細(xì)胞產(chǎn)生的        。

     

    (2)在對癥治療上,除了挖溝排水外,專家還為龍舌蘭建立了保溫室。因為龍舌蘭本是熱帶植物,其                  性決定了溫室有利于其康復(fù)。溫室使它的                     提高,加快了新陳代謝的進(jìn)行。

     

    (3)專家還用吹風(fēng)機保持龍舌蘭生長環(huán)境干燥,該措施的重要意義之一,可用以下圖解表示:

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

    ①圖解中a代表                 作用。

    ②請按照圖解的思路,寫出三種必需礦質(zhì)元素及其各自參與合成的b的名稱:

                                                                 、

                                                                 、

                                                                 。

     

    (4)①若將此龍舌蘭的一小團(tuán)葉肉細(xì)胞進(jìn)行植物組織培養(yǎng),則能在錐形瓶中長出一株龍舌蘭。這是根據(jù)植物細(xì)胞的                       理論發(fā)展起來的新技術(shù)。

    ②把在錐形瓶中培育出的龍舌蘭植株也栽培在此植物園中并進(jìn)行相同管理。那么,它是否可能長得像母本一樣高?為什么?

                                                                   。

     

     

     

    31.(13分)味精是家庭不可缺少的調(diào)味品,它的主要成分谷氨酸鈉,是將谷氨酸用碳酸鈉中和而成。目前主要利用谷氨酸棒狀桿菌來生產(chǎn)谷氨酸。下圖表示某容器中培養(yǎng)的谷氨酸棒狀桿菌的生長曲線。

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。

     

     

     

     

     

     

    請回答:

    (1)谷氨酸棒狀桿菌的代謝類型是_______________________。

     

    (2)為了測定培養(yǎng)液中細(xì)菌的數(shù)目,將500個紅細(xì)胞與5mL該培養(yǎng)液混合均勻,然后制片觀察,進(jìn)行隨機統(tǒng)計結(jié)果如下:

     

        視野l(fā)

        視野2

        視野3

        視野4

      紅細(xì)胞數(shù)

        20

        18

        22

        20

      細(xì)菌個數(shù)

        103

        97

        105

        95

     該5mL培養(yǎng)液共含有細(xì)菌約_________________個。

     

    (3)當(dāng)培養(yǎng)基中的碳源和氮源之比為4:1時,有利于圖中的__________段進(jìn)行。如果想推遲de段的出現(xiàn),可以采用_________________的方法。

     

    (4)對照圖a,在圖b繪出表示谷氨酸棒狀桿菌生長速率變化的曲線。

     

    (5)在谷氨酸的生產(chǎn)過程中,采用一定的手段改變細(xì)胞膜的透性的目的是

    _______    _______________________________________       _____。

    (6)當(dāng)培養(yǎng)基中____________不足時,發(fā)酵罐中有乳酸或琥珀酸出現(xiàn)。

     

    (7)為測定谷氨酸棒狀桿菌生長所需的最適pH,某同學(xué)設(shè)計了下列實驗步驟。

        配制適宜培養(yǎng)基,分裝到5個錐形瓶中,并編號I、Ⅱ、Ⅲ、Ⅳ、V;用緩沖液分別調(diào)pH為4.0、4.5、5.O、5.5、6.O;將每瓶培養(yǎng)基等量分裝到3支試管中,加棉塞并用牛皮紙包扎,每捆試管外掛上相應(yīng)標(biāo)簽;在酒精燈上加熱煮沸10min滅菌后冷卻;無菌條件下接種等量菌種;37℃恒溫箱中培養(yǎng)24小時;測定每管中谷氨酸的產(chǎn)量;計量、統(tǒng)計并分析結(jié)果。

    A.上述步驟中有3個明顯科學(xué)性錯誤,請改正之:

    ①_____________________________________________________________。

    ②_____________________________________________________________。

    ③_____________________________________________________________。

    B.試列出實驗結(jié)果的數(shù)據(jù)統(tǒng)計表格(含標(biāo)題)(3分)

     

     

     

     

     

     

     

     

     

     

     

    高考資源網(wǎng)( www.ks5u.com),中國最大的高考網(wǎng)站,您身邊的高考專家。(二)(10分)科學(xué)工作者分離得到了某生物的基因A,將其解離成兩條單鏈,用其中的一條鏈與其信使RNA雜交配對,結(jié)果如圖所示。

    ⑴據(jù)圖可知,基因A中含有   個內(nèi)含子,    個外顯子。

    ⑵圖中沒有表示出基因A的              片段。

    ⑶此圖表示逆轉(zhuǎn)錄過程嗎?       。一般用                  法獲得基因A。

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

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