0  296221  296229  296235  296239  296245  296247  296251  296257  296259  296265  296271  296275  296277  296281  296287  296289  296295  296299  296301  296305  296307  296311  296313  296315  296316  296317  296319  296320  296321  296323  296325  296329  296331  296335  296337  296341  296347  296349  296355  296359  296361  296365  296371  296377  296379  296385  296389  296391  296397  296401  296407  296415  447090 

24.(   )一There are always many volunteers in great events, ______?

      一Yes.Many hands make light work!

      A.aren’t there       B.are there       C.area’t they

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23.(   )Two places of interest in Beijing nee well-known to people from home and abroad.One is the Great Wall,______ is the Summer Palace.

     A.the other         B.another        C.other

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22.(   )A low-carbon(低碳)lifestyle has ______ effect on our daily life.People are paying more and more attention to saving ______ these days.

   A.the;energies      B.a;energy      C.an;energy

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21.(   )Every one of you is looking forward ______ getting a good result.Better think carefully before writing down your answers.Wish you success!

A.on          B.in         C.to

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I.听句子,选出与所听句子内容相匹配的图画。(本题共5分,每小题1分)

Ⅱ.听对话,根据问题选出正确答案。(本题共10分,每小题2分)

6.(   ).She has a cold.           B.She wants to eat something.

     C.She has a headache.

7.(   )A.Because the music there is loud.    B.Because it's the cheapest.

     C.Because it’s the nearest.

8.(   )A.To a flower show.          B.To a talent show.

C.To a magic show.

9.(   )A.A pear.          B.An apple.       C.A banana.

10.(   )A.In Paris.         B.In London.       C.In Macao.

Ⅲ.听对话。根据对话内容选出最佳答案完成各句。(本题共5分,每小题1分)

11.(   )The weather in Beijing will be ______ tomorrow.

      A.snowy        B.sunny        C.windy

12.(   )There is a lot of ______ in winter in Beijing.

     A.ice          B.snow        C.wind

13.(   )______ seasons are mentioned in the conversation.

     A.One         B.Two         C.Three

14.(   )Though winds sometimes blow strongly in ______,it is quite warm.

     A.winter        B.summer        C.spring

15.(   )The woman prefers winter because ______.

A.she can play with snow       B.it is cold    C.she can skate

IV.听短文,根据所听内容选出短文中划线部分词的同义词或同义短语。(本题共10分,每小题2分)

John wants a bike.He asks his  16   for the money and they say he must make it  17  .But how? He thinks about this problem on his way home.Suddenly,he has all idea.Dick,one of his classmates,is delivering(速递) newspapers  18  .“Yes, I can do that!”John is so happy.“  19   l can get my own bike very soon.I can pay a little money for it  20   week."Then he goes to ask Dick lots of questions about his job.He finds out that he can get twenty-five dollars each week,and he only needs to work about three hours each night.When he knows the telephone number of the newspaper,he runs back home and tells his mother about it.His mother says,“I think it’s a good idea.I’ll call,the newspaper.”“No,Mum.I’11 call.I’m going to be a businessman.”says John.  

16.(   )A.parent        B.parents       C.grandparents

17.(   )A.alone        B.lonely       C.on your own

18.(   )A.in the old days     B.at that time     C.recently

19.(   )A.Perhaps        B.Whenever     C.Whether

20.(   )A.all          B.either       C.every

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26.(8分)(1)      环己烷

(2)取代反应  加成反应

   

(3)       +2NaOH           +2NaBr+2H2O

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25.(1)CH≡C-C≡C-CH2-CH3

(2)     + Br2         +  HBr

  (3)稳定

(4) a d

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24.(1)C8H18            (1分)  

(2)2,2,3─三甲基戊烷      (1分)

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26.(04广东23)根据下面的反应路线及所给信息填空。

(1)A的结构简式是           ,名称是          

(2)①的反应类型是                       

②的反应类型是                       

(3)反应④的化学方程式是

                                       

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25、(10分)(1)由于苯的含碳量与乙炔相同,人们认为它是一种不饱和烃,写出C6H6的一种含叁键且无支链链烃的结构简式______________________________________。

(2)苯不能使溴水褪色,性质类似烷烃,任写一个苯发生取代反应的化学方程式

    ____________________________________________________________________

(3)烷烃中脱水2 mol氢原子形成1 mol双键要吸热,但1,3-环己二烯(脱去2 mol氢原子变成苯却放热,可推断苯比1,3-环己二烯________(填稳定或不稳定)。

(4)1866年凯库勒(右图)提出了苯的单、双键交替的

正六边形平面结构,解释了苯的部分性质,

但还有一些问题尚未解决,它不能解释下列        事实(填入编号)。

a. 苯不能使溴水褪色       b. 苯能与H2发生加成反应

   c. 溴苯没有同分异构体      d. 邻二溴苯只有一种

(5)现代化学认为苯分子碳碳之间的键是________________________________。

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