0  294298  294306  294312  294316  294322  294324  294328  294334  294336  294342  294348  294352  294354  294358  294364  294366  294372  294376  294378  294382  294384  294388  294390  294392  294393  294394  294396  294397  294398  294400  294402  294406  294408  294412  294414  294418  294424  294426  294432  294436  294438  294442  294448  294454  294456  294462  294466  294468  294474  294478  294484  294492  447090 

36. -- I hope you don't mind my opening the window.

  -- ______ It's much too hot in here.

   A. Certainly       B. Of course not

   C. All right       D. Never mind

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35. Bob promises to join in the football match ______ he has to help his parents on the farm.

    A. if     B. as         C. unless        D. when

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34. -- Did you find the small village yesterday?

  -- Yes, without any difficulty, for it has ______ changed over years.

   A. hardly    B. greatly       C. clearly       D. nearly

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33. -- What time do you expect me back, Mum?

  -- Say, ______half an hour.

   A. at      B. before       C. in         D. for

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32. It's nice of you to ______ so much time showing me around your school.

   A. take    B. spend        C. cost         D. have

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VI. 单项选择(共20小题;每小题1分,满分20分)

从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。

31. -- I need something for cutting the paper.

   -- Oh, you want a knife? OK, I'll get ______ for you.

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

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I.关键词语选择(共5小题;每小题1分,满分5分)

   你将听到五个句子。请在每小题所给的A,B、C三个选项中选出一你所听到的单词或短语。每个句子读两遍。

1.A. fix      B.fit    C.fat

2.A.effort     B. offer    C. record

3.A.head      D. held    C.heard 

4.A.swimming   B. skating   C. shopping

5.A.send up    B. set up    C. save up

Ⅱ.短对话理解(共10小题;每小题个relationship between them?

  A. Driver and passenger.    B. Father and daughter.    C. Manager and secretary.

15. Why hasn’t Helen read the email?

  A. Because she is too busy.   B. Because she has a bad cold.

  C. Because her computer doesn’t work.

III. 长对话理解  (共5小题;每小题1分,满分5分)

你将听到两段对话,每段对话后有几个小题。请在每小题所给的A、B、C三个选项中选出一个最佳选项。每段对话读两遍。

听下面一段对话,回答第16到17小题。

16. What is Maggie?

  A. A teacher.    B. A student.    C. A policewoman.

17. What does Maggie think of Jason’s job?

   A. Great.       B. Dangerous.     C. Boring.

听下面一段对话,回答第18到20小题。

18. Who is answering the telephone call?

  A. Susan.    B. Robert.    C. Richard.

19. What’s Susan going to do tomorrow morning?

  A. To visit the museum.   B. To go to the park.   C. to stay home and study.

20. How are they going there?

  A. By bike.      B. By taxi.     C. By bus.

IV. 短文理解 (共5小题;每小题1分,满分5分)

你将听到一篇短文,短文后有5个小题。请根据短文内容,在每小题所给的A、B、C三个选项中选出一个最佳选项。短文读两篇。

21. Where does Jack live in England?

  A. In a village.   B. On a farm.   C. In a town.

22. What did he go to Russia for?

  A. He went there on business.  B. He went there for holiday.  C. He went to visit his friends.

23. How long did he stay in Russia?

  A. For a few days.   B. For a few weeks.   C. For a few months.

24. Why was he almost knocked down?

  A. Because the street was too busy.    B. Because he was walking in a hurry.

  C. Because he forgot the traffic rules there.

25. What did the old man mean?

  A. He wanted to help Jack.        B. He told Jack where he was.

  C. He wanted to sell maps to Jack.

V. 信息转换 (共5小题;每小题1分,满分5分)

你将听到一篇短文。请根据短文内容,写出下面表格中所缺的单词,每空仅填一词。短文读两遍。

An Announcement (通知)
Who
Nancy White, a famous   26   .
What
A speech on American    27   .
When
At  28   o’clock this Friday afternoon.
Where
In the school   29   .
What else
There’ll be an English  30  after the speech.

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I.关键词语选择(共5小题;每小题1分,满分5分)

   你将听到五个句子。请在每小题所给的A,B、C三个选项中选出一个你所听到的单词或短语。每个句子读两遍。

1.A. fix      B.fit    C.fat

2.A.effort     B. offer    C. record

3.A.head      D. held    C.heard 

4.A.swimming   B. skating   C. shopping

5.A.send up    B. set up    C. save up

Ⅱ.短对话理解(共10小题;每小题1分,满分10分)

你将听到十段对话, 每段对话后有一个小题。请在每小题所给的A、B、C三个选项中选出一个最佳选项。每段对话读两遍。

6. What are they talking about?

7. Which sport does Carl like?

2010年安徽省初中毕业学业考试英语试卷

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27.(2007年南师大第二附属高级中学高三典型题训练)在氮的化合物中,有一类盐叫亚硝酸盐.如亚硝酸钠(NaNO2)等.它们广泛用于印染、漂白等行业,在建筑行业用作防冻剂,在食品工业作防腐剂和增色剂;它是一种潜在致癌物质,过量或长期食用对人产生危害,由于亚硝酸钠有咸味,外观与NaCl相似,曾多次发生过被误当食盐食用的事件。

某同学查阅有关资料,了解到以下相关信息:

加热
 
亚硝酸及亚硝酸盐的资料:
(1)HNO2是一种弱酸(比醋酸略强),且不稳定,易分解生成NO和NO2
(2)HNO2能被常见的强氧化剂氧化;在酸性溶液中它也是一种氧化剂,如能把氧化成I2
(3)AgNO2是一种难溶于水易溶于酸的化合物
(4)NaNO2的制备:2NaOH+NO+NO2==2NaNO2+H2O
2NO2+2NaOH==NaNO3+NaNO2+H2O
2NaNO3== 2NaNO2+ O2
 

试回答下列问题:

(1)人体正常的血红蛋白中应含Fe2+.若误食亚硝酸盐(如NaNO2),则导致血红蛋白中Fe2+转化为Fe3+而中毒,服用维生素C可解毒.下列叙述不正确的是________.

   A.亚硝酸盐是还原剂          B.维生素C是还原剂

   C.维生素C将Fe3+还原为Fe2+        D.亚硝酸盐被还原

(2)下列方法中,不能用来区别NaNO2和NaCl的是________.

   A.测定这两种溶液的pH          B.用AgNO3和HNO3两种试剂来区别

   C.在酸性条件下加入KI淀粉试液来区别   D.分别在这两种溶液中滴加甲基橙

(3)一般的自来水中含多种离子,如Na+、Ca2+、Cl、SO42、NO3等,专家提出不能喝“千滚水”(指多次煮沸的水),请你用化学知识解释其合理性   ______________________________________。

(4)为了测定某样品中NaNO3的含量,可以使用标准KMnO4溶液进行滴定,试回答:

   ①KMnO4溶液在滴定过程中作________(填“氧化剂” “还原剂”),该滴定过程________(填“要”或“不要”)另加指示剂.

   ②若滴定终点读数时目光俯视,则所得结果________(填“偏大”“偏小”“无影响”).

 (5)某同学在家中欲进行鉴别NaCl与NaNO2的实验,但他家中只有浓醋酸,请问该实验能否成功?说明理由。

  (6)现有氮的三种常见氧化物组成的混和气体44.8L(体积已换算成标准状态),其中N2O4、NO体积分数都为20%。

①将该气体通入适量的NaOH溶液中恰好反应,则溶液中NaNO2的质量是     g;

②反应后的溶液蒸干灼烧则NaNO2物质的量       mol。

答案 (1)A  (2)D   (3)NO2+Cl2+H2O=NO3+2H++2Cl(4) ①氧化剂, 不要   ②偏小 

(5)能,强酸制取弱酸,生成的HNO2分解为红棕色NO2气体。 (6)110.4  2.4

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26.2007年普陀区高三质量调研)在120mL 12.5mol/L的硝酸中,加入m克的Fe后,在加热条件下恰好完全反应,收集到NO与NO2的混合气体,将气体通过低温使NO2完全转化为N2O4晶体,得到11.5克晶体,反应后在溶液中滴入KSCN溶液,发现溶液不显红色。

(1)加入Fe的物质的量为     

(2)反应中收集到的气体中NO的体积为        (标准状态下);

答案(1)0.5 mol  (2)5.6 L 

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