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江苏丹阳高级中学2008―2009学年度第二学期高二期中考试

               地理试卷              5.8

试题详情

金属单质及其化合物

考点聚焦

 

金属单质及其化合物

                           2、镁及其化合物                               

                           3、铝及其化合物                                   

                           4、铁、铜及其化合物

知识梳理

                                     

一、钠及其化合物                             

1、钠

(1)钠的物理性质:钠是银白色金属,密度小(0.97g/cm3),熔点低(97℃),硬度小,质软,可用刀切割。钠通常保存在煤油中。是电和热的良导体。

(2)钠的化学性质:从原子结构可知钠是活泼的金属单质。

①钠与非金属单质反应:常温:4Na + O2 == 2Na2O,加热:2Na + O2 Na2O2;

2Na + Cl2  2NaCl; 2Na + S  Na2S等。

②钠与水反应:2Na + 2H2O == 2NaOH + H2↑;实验现象:钠浮在水面上,熔成小球,

在水面上游动,有哧哧的声音,最后消失,在反应后的溶液中滴加酚酞,溶液变红。                                                                      

注意:钠在空气中的变化:银白色的钠变暗(生成了氧化钠)变白(生成氢氧化钠)潮解变成白色固体(生成碳酸钠)。

③钠与酸反应:如2Na + 2HCl == 2NaCl + H2↑,Na放入稀盐酸中,是先与酸反应,酸不足再与水反应。因此Na放入到酸溶液中Na是不可能过量的。同时Na与H2的物质的量比始终是2:1。当然反应要比钠与水的反应剧烈多。

④钠与盐的溶液反应:钠不能置换出溶液中的金属,钠是直接与水反应。反应后的碱再与溶液中的其他物质反应。如钠投入到硫酸铜溶液的反应式:2Na + CuSO4 + 2H2O == Cu(OH)2 ↓+ Na2SO4 + H2 ↑。                                                    

⑤钠与氢气的反应:2Na + H2 == 2NaH。NaH + H2O == NaOH + H2 ↑;NaH是强的还原剂。

(3)工业制钠:电解熔融的NaCl,2NaCl(熔融)  2Na + Cl2↑。

(4)钠的用途:①在熔融的条件下钠可以制取一些金属,如钛、锆、铌、钽等;

②钠钾合金是快中子反应堆的热交换剂;

③钠蒸气可作高压钠灯,发出黄光,射程远,透雾能力强。

 

2、氧化钠和过氧化钠

(1)Na2O:白色固体,是碱性氧化物,具有碱性氧化物的通性:Na2O + H2O == 2NaOH,

Na2O + CO2 == Na2CO3,Na2O + 2HCl == 2NaCl + H2O .另外:加热时,2Na2O + O2 == 2Na2O2.                                        

(2)Na2O2:淡黄色固体是复杂氧化物,易与水、二氧化碳反应放出氧气。

2Na2O2 + 2H2O == 4NaOH + O2 ↑,2Na2O2 + 2CO2 == 2Na2CO3 + O2 ↑(作供氧剂)。

因此Na2O2常做生氧剂,同时,Na2O2还具有强氧化性,有漂白作用。如实验:Na2O2和水反应后的溶液中滴加酚酞,变红后又褪色,实验研究表明是有:Na2O2 + H2O == 2NaOH + H2O2,2H2O2 == 2H2O + O2 反应发生。因为H2O2也具有漂白作用。当然过氧化钠也可以直接漂白的。                                              

 

3、碳酸钠和碳酸氢钠                                                      

性质

Na2CO3(Na2CO3?10H2O)

NaHCO3

性质比较

俗称

纯碱或苏打

小苏打

NaHCO3的颗粒比Na2CO3

水溶性

易溶于水

易溶于水

S(Na2CO3)>S(NaHCO3)

溶液酸碱性

显碱性

显碱性

同浓度Na2CO3溶液的pH大于NaHCO3溶液的pH

热稳定性

稳定

受热分解生成Na2CO3、H2O、CO2

NaHCO3的热稳定性比Na2CO3差,用于除杂质。

与酸反应

能与强酸反应

能与强酸反应

等物质的量时Na2CO3耗酸量大于NaHCO3

溶液中相互转化

Na2CO3溶液能吸收CO2转化为NaHCO3

Na2CO3 + H2O + CO2 == 2 NaHCO3

除CO2中的HCl杂质是用饱和的NaHCO3溶液,而不用Na2CO3溶液

用途

用在玻璃、肥皂、合成洗涤剂、造纸、纺织、石油、冶金等工业中。

发酵粉的主要成分之一;制胃酸过多等。

 

注意几个实验的问题:

1、向饱和的Na2CO3溶液中通足量的CO2有晶体NaHCO3析出。

2、Na2CO3溶液与稀HCl的反应①向Na2CO3溶液中滴加稀HCl,先无气体,后有气体,如果n(HCl)小于n(Na2CO3)时反应无气体放出。发生的反应:先①Na2CO3 + HCl == NaCl + NaHCO3,后②NaHCO3 + HCl == NaCl + H2O +CO2 .

②向稀HCl中滴加Na2CO3溶液,先有气体,反应是:Na2CO3 + 2HCl == 2NaCl + H2O + CO2.

如果用2mol的Na2CO3和2.4mol的稀HCl反应,采用①方法放出CO2是0.4mol;采用②方法放出CO2为1.2mol。希望同学们在解题时要留意。

3、Na2CO3溶液和NaHCO3溶液的鉴别:取两种试液少量,分别滴加CaCl2或BaCl2溶液,有白色沉淀的原取溶液为Na2CO3,另一无明显现象的原取溶液为NaHCO3

4、侯氏制碱法

反应式:NaCl + NH3 + CO2 + H2O == NaHCO3 ↓+ NH4Cl.

注意:在生产中应先在饱和的NaCl溶液中先通入NH3,后通入CO2,NaHCO3晶体析出过滤,在滤液中加入NaCl细末和通NH3析出NH4Cl晶体为副产品。NH4Cl晶体析出后的母液进行循环试用,提高原料的利用率。

 

二、镁及其化合物

1、镁的性质

(1)物理性质:镁是银白色金属,质较软,密度1.74g/cm3,是轻金属,硬度小。

(2)化学性质:镁是较活泼金属

①与非金属反应:2Mg + O2 == 2MgO,Mg + Cl2  MgCl2,3Mg + N2  Mg3N2等。

②与沸水反应:Mg + 2H2O(沸水)== Mg(OH)2 + H2 ↑.

③与酸反应:与非强氧化性酸反应:是酸中的H+与Mg反应,有H2放出。

与强氧化性酸反应:如浓H2SO4、HNO3,反应比较复杂,但是没有H2放出。

④与某些盐溶液反应:如CuSO4溶液、FeCl2溶液、FeCl3溶液等。

Mg + 2FeCl3 == 2FeCl2 + MgCl2,   Mg + FeCl2 == Fe + MgCl2.

 

2、镁的提取:海水中含有大量的MgCl2,因此,工业上主要是从分离了NaCl的海水中来提取MgCl2.

流程:海水中加入CaO或Ca(OH)2Mg(OH)2沉淀、过滤、洗涤沉淀,用稀HCl溶解MgCl2溶液,蒸发结晶MgCl2?6H2O晶体,在HCl气体环境中加热MgCl2固体,电解熔融的MgCl2Mg + Cl2 ↑。

主要反应:MgCl2 + Ca(OH)2 == Mg(OH)2↓+ CaCl2,  Mg(OH)2 + 2HCl == MgCl2 + 2H2O,     MgCl2?6H2O  MgCl2 + 6H2O ,  MgCl2(熔融)  Mg + Cl2↑。

3、镁的用途:镁主要是广泛用于制造合金。制造的合金硬度和强度都较大。因此镁合金被大量用火箭、导弹、飞机等制造业中。

 

4、氧化镁(MgO):白色固体,熔点高(2800℃),是优质的耐高温材料(耐火材料)。是碱性氧化物。

MgO + H2O == Mg(OH)2,   MgO + 2HCl == MgCl2 + H2O 。

注意以下几种情况的离子方程式的书写:

(1)n(Mg(HCO3)2):n(NaOH)=1:4:Mg2+ + 2HCO3- + 4OH- == Mg(OH)2↓+ 2CO32- + 2H2O;

(2)n(Mg(HCO3)2):n(NaOH)=1:2:Mg2+ + 2HCO3- + 2OH- == MgCO3↓+ CO32- + 2H2O;

(3)n(Mg(HCO3)2):N(NaOH)=1:1: Mg2+ + HCO3- + OH- == MgCO3↓+H2O 。

 

三、铝及其化合物

1、铝的性质:

(1)物理性质:银白色金属,质较软,但比镁要硬,熔点比镁高。有良好的导电、导热性和延展性。

(2)化学性质:铝是较活泼的金属。

①通常与氧气易反应,生成致密的氧化物起保护作用。4Al + 3O2 == 2Al2O3。同时也容易与Cl2、S等非金属单质反应。

②与酸反应:强氧化性酸,如浓硫酸和浓硝酸在常温下,使铝发生钝化现象;加热时,能反应,但无氢气放出;非强氧化性酸反应时放出氢气。

③与强碱溶液反应:2Al + 2NaOH + 2H2O == 2NaAlO2 + 3H2↑。

④与某些盐溶液反应:如能置换出CuSO4、AgNO3等溶液中的金属。

⑤铝热反应:2Al + Fe2O3  Al2O3 + 2Fe。该反应放热大,能使置换出的铁成液态,适用性强。在实验室中演示时要加入引燃剂,如浓硫酸和蔗糖或镁条和氯酸钾等。

 

2、氧化铝(Al2O3):白色固体,熔点高(2054℃),沸点2980℃,常作为耐火材料;是两性氧化物。我们常见到的宝石的主要成分是氧化铝。有各种不同颜色的原因是在宝石中含有一些金属氧化物的表现。如红宝石因含有少量的铬元素而显红色,蓝宝石因含有少量的铁和钛元素而显蓝色。工业生产中的矿石刚玉主要成分是α-氧化铝,硬度仅次于金刚石,用途广泛。

两性氧化物:既能与强酸反应又能与强碱反应生成盐和水的氧化物。

Al2O3 + 6HCl == 2AlCl3 + 3H2O ,Al2O3 + 2NaOH == 2NaAlO2 + H2O 。

Al2O3是工业冶炼铝的原料,由于氧化铝的熔点高,电解时,难熔化,因此铝的冶炼直到1886年美国科学家霍尔发现在氧化铝中加入冰晶石(Na3AlF6),使氧化铝的熔点降至1000度左右,铝的冶炼才快速发展起来,铝及其合金才被广泛的应用。2Al2O3  4Al + 3O2↑。

 

3、氢氧化铝(Al(OH)3):白色难溶于水的胶状沉淀,是两性氢氧化物。热易分解。

两性氢氧化物:既能与强酸又能与强碱反应生成盐和水的氢氧化物。

Al(OH)3 + 3HCl == AlCl3 + 3H2O,  Al(OH)3 + NaOH == NaAlO2 + 2H2O.2Al(OH)3  Al2O3 +3 H2O

 

4、铝的冶炼:铝是地壳中含量最多的金属元素,自然界中主要是以氧化铝的形式存在。工业生产的流程:铝土矿(主要成分是氧化铝)用氢氧化钠溶解过滤向滤液中通入二氧化碳酸化,过滤氢氧化铝氧化铝 铝。

主要反应:Al2O3 + 2NaOH == 2NaAlO2 + H2O ,CO2 + 3H2O + 2NaAlO2 == 2Al(OH)3↓+ Na2CO3 ,2Al(OH)3  Al2O3 +3 H2O ,2Al2O3  4Al + 3O2↑。

5、铝的用途:铝有良好的导电、导热性和延展性,主要用于导线、炊具等,铝的最大用途是制合金,铝合金强度高,密度小,易成型,有较好的耐腐蚀性。迅速风靡建筑业。也是飞机制造业的主要原料。

 

6、明矾的净水:化学式:KAl(SO4)2?12H2O,它在水中能电离:KAl(SO4)2 == K+ + Al3+ + 2SO42-。铝离子与水反应,生成氢氧化铝胶体,具有很强的吸附能力,吸附水中的悬浮物,使之沉降已达净水目的。Al3+ + 3H2O == Al(OH)3 (胶体)+ 3H+

知识整理:

①(Al(OH)3)的制备:在氯化铝溶液中加足量氨水。AlCl3 + 3NH3?H2O == Al(OH)3↓+ 3NH4Cl 。

②实验:A、向氯化铝溶液中滴加氢氧化钠溶液,现象是先有沉淀,后溶解。

反应式:先Al3+ + 3OH- == Al(OH)3↓, 后Al3+ + 4OH- == AlO2- + 2H2O。

B、向氢氧化钠溶液中滴加氯化铝溶液,现象是开始无沉淀,后来有沉淀,且不溶解。

反应式:先Al3+ + 4OH- == AlO2- + 2H2O,后Al3+ + 3AlO2- + 6H2O == 4Al(OH)3↓。

③实验:向偏铝酸钠溶液中通二氧化碳,有沉淀出现。CO2 + 3H2O + 2NaAlO2 == 2Al(OH)3↓+ Na2CO3

④将氯化铝溶液和偏铝酸钠溶液混和有沉淀出现。 Al3+ + 3AlO2- + 6H2O == 4Al(OH)3↓。

⑤实验:A、向偏铝酸钠溶液中滴加稀盐酸,先有沉定,后溶解。

反应的离子方程式:AlO2- + H+ + H2O == Al(OH)3 ,Al(OH)3 + 3H+ == Al3+ + 2H2O 。

B、向稀盐酸中滴加偏铝酸钠溶液,先无沉淀,后有沉淀且不溶解。

反应的离子方程式:AlO2- + 4H+ == Al3+ + 2H2O ,3AlO2- + Al3+ + 6H2O == 4Al(OH)3↓。

文本框: Al⑥铝三角:

 

 

 

 

 

 

 

上图中的每根箭头都有一个反应,请同学们试着写好。

 

试题详情

丹阳高中08-09学年第二学期期中考试数学试题

           高二年级          5.7

试题详情

非金属元素

考点聚焦

    1.理解非金属的概念。

    2.了解元素原子核外电子排布的周期性与元素性质递变关系。重点掌握典型非金属( 卤族元素)在周期表中的位置及与其性质的关系。了解其他常见非金属元素(如:H、O、S 、N、P、C、Si)的单质及其化合物。

知识梳理

试题详情

丹阳高级中学08-09学年度第二学期高二年级期中考试

   物理试题              5.8

 

试题详情

离子反应、离子方程式

考点聚焦

1.  理解离子反应的本质。

2.  能进行离子方程式的书写及正误判断。

3.  能应用离子反应判断离子在溶液中以能否大量共存。

知识梳理

试题详情

江苏省丹阳高级中学2008-2009学年度高二期中考试

英语试卷

第一卷(客观题,共95分) 

第一部分:听力(共两节,满分20分)

第一节(共5小题;每小题1分,满分5分)

听下面5段对话。每段对话后有一小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。

1. Where are the two speakers talking now?

   A. In a car B.                               On a bike                                          C. In a train

2. What did the doctor advise the woman to do?

   A. Take more sugar B. Lose weightC. Take medicine

3. How much does the man need to pay for two bottles of orange juice?

   A. 3 dollars                                  B. 4 dollars                                 C. 6 dollars

4. What’s the probable relationship between the two speakers?

   A. Friends                                    B. Mother and son                       C. Husband and wife

5. What does the man mean?

   A. The new classmate has been here for 3 days.

   B. He hasn’t seen the new classmate for 3 days.

   C. There are three new classmates all together.

第二节(共15小题;每小题1分,满分15分)

听下面5段对话或独白。每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

听下面一段材料,回答第6至8题。

6. When does the conversation probably take place?

   A. In the morning                         B. In the afternoon                      C. At noon

7. How many people will come with the woman for lunch?

A. 3                                            B. 4                                           C. 5

8. What can we learn from the conversation?

   A. The woman will meet a visitor in the restaurant.

   B. The restaurant serves lunch until 2:00 p.m.

   C. The woman doesn’t know the restaurant well.

听下面一段材料,回答第9至11题。

9. Why hasn’t David seen Jessie lately?

A. Because he has been absent from school.

B. Because he has been busy with the study.

C. Because he has been on a summer vacation.

10. Who will go camping according to the dialogue?

A. David and Jessie                            B. Jessie and her brother                     C. David and his brother

11. What does Jessie think of camping?

A. It’s cheap and wonderful          B. It’s wonderful but unsafe         C. It is worthwhile but tiring

听下面一段材料,回答第12至14题。

12. How many books are there in the library?

A. Over 1 million                        B. About 2 million                      C. Over 3 million

13. What is the building to the south of the library?

A. New office building for senior high school.

B. New classroom building for senior high school.

C. New dormitory building for junior high school.

14. Where is the swimming pool located?

A. To the east of the library.

B. In the middle of the school.

C. To the north of the library.

听下面一段材料,回答第15至17题。

15. What's the relationship between the two speakers?

A. Strangers                               B. Classmates                              C. Colleagues

16. How often do the buses run?

A. About every fifteen minutes.    B. About every ten minutes.         C. About every five minutes.

17. What do we know about the woman?

A. She is new to New York.         B. She is on her way to 63rd Street. C. She comes from South Africa.

听下面一段材料,回答第18至20题。

18. Why will the speaker put in new light fixtures?

A. Because the old lights don’t light up very well.

B. Because the old lights are all out of fashion.

C. Because there are not enough lights in the house.

19. What will the new addition include?

A. A family room and a dining area.

B. A living room and a dining area.

C. A deck and a living room.

20. What can we learn from the talk?

A. A backdoor will be added to the house.

B. The speaker intends to replace the roof.

C. The speaker plans to replace a part of the carpets.

 

第二部分:英语知识运用(共两节,满分35分)

第一节: 单项填空(共15小题;每小题1分,满分15分) 从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。

21. ---Can the young girl take charge of the computer company?

   ---I’m afraid it’s _________ her ability.

   A. to                              B. of                            C. beyond                           D. within

22. Intelligence doesn’t          mean success. You need to work hard as well.

       A.honestly                 B.comparatively         C.simply                    D.necessarily

23. When          valuable, those books enjoyed great success.

       A.having found       B.found               C.being found           D.to be found

24. After his _________ of the new mobile phone, the college graduate felt wild with joy.

    A. acquisition               B. invitation                 C. concentration            D. distinction

25. I’d rather read than watch television, because the programs seem _________ all the time.

       A. get worse                                                    B. to have got worse     

C. that it is getting worse                                  D. to be getting worse

26. ________ feels good to have a hot bath after a day’s hard work.

       A. That                 B. It                      C. This                       D. What

27. Scientists say it will be five or six years ______ it is possible to test this medicine on human patients.

       A. since                        B. that                          C. before                      D. when

28. Does it never ________ to you that I may beat him in the game?

       A. happen                     B. handle                      C. think                        D. occur

29. It was already past midnight and only three students ________ in the classroom.

       A. left                          B. remained                  C. delayed                    D. predicted

30. ________ to the left at the crossroads, and you will see the railway station on your right.

    A. Turn                 B. Turning                           C. If you turn               D. To turn

31. It would _________ if John helped with the housework that we are to finish this afternoon.

A. make a difference                                        B. make sure                     

C. take into consideration                                  D. keep in mind

32. I’m sending an e-mail to my friend ________ he will give me a hand in the project.

       A. in the hope of           B. in order to                C. in the hope that         D. in order of

33. Time _________, we will go shopping in the supermarket.

    A. permitted                 B. permits                    C. permitting                D. having been permitted

34. Are there any difficulties that have _________ from the change of the plan?

   A. raised                        B. rose                         C. found                       D. arisen

35. The audience _________ the exits when the alarm was sounded.

   A. made up                    B. made for                  C. took up                    D. took for

 

第二节:完形填空(共20小题;每小题1分,满分20分) 阅读下面短文,掌握其大意,然后从36~55各题所给的四个选项(A、B、C和D)中,选出最佳选项。

Ella Fant was a middle-aged lady who lived with her only son John in a small house. She __36__ John very much. In her eyes he couldn’t do anything __37__. Every morning she would give him breadkfst__38__bed and bring him the papers to read. It isn't really true that he was too__39__to work-in fact he had tried a few__40__. First of all he was a window-cleaner and in his first week he managed to__41__at least six windows. Then he__42__a bus conductor and on his second__43__a passenger stole his bag with all the fares(车费)collected. He even lost his job as a postman__44__he sent off all the letters when he should have taken them to people's houses. It seemed that there was__45__suitable work for him. So he__46__to join the army. Mrs. Fant was so__47__about this that she told the news to all her neighbours. “My John is good to be a soldier,” she said. “He is going to be the best soldier there__48__was, I can tell you!”

Then the great day came__49__he was to march past the palace in the parade(接受检阅的队伍).His__50__mother travelled to the city early in the morning to be sure of getting a good__51__in the crowd.

The parade was full of sound and colour. But when John and his __52__ came in sight some of the people watching __53__ laughing at the one who couldn't keep pace with the other as they marched along.

But Ella Fant, who was filled with __54__, shouted at the top of her voice: “Look at them! They’re all out of __55__ except my John! Isn’t he the best!”

36. A. depended on              B. waited on                 C. trusted                     D. loved

37. A. wrong                       B. great                       C. good                       D. strange

38. A. to                                    B. at                            C. in                           D. by

39. A. lazy                          B. young                     C. weak                       D. shy

40. A. ones                         B. years                       C. tasks                       D. jobs

41. A. rub                           B. drop                        C. break                             D. clean

42.A. followed                    B. met                         C. became                    D. found

43.A. day                           B. try                          C. route                       D. chance

44.A. even if                       B. so that                     C. because                   D. though

45.A. some                         B. such                        C. less                         D. no

46.A. began                        B. promised                 C. managed                  D. decided

47.A. excited                             B. worried                   C. anxious                   D. curious

48.A. yet                            B. ever                        C. never                             D. just

49.A. where                        B. since                       C. when                       D. till

50.A. proud                        B. kind                        C. strict                       D. lucky

51.A. time                          B. position                   C. experience                      D. impression

52.A. neighbours                 B. army officer            C. mother                    D. fellow soldiers

53.A. couldn't help              B. shouldn't burst out     C. stopped                   D. kept

54.A. sadness                      B. happiness                 C. surprise                   D. regret

55.A. sight                          B. order                       C. mind                       D. step

 

第三部分:(I)阅读理解(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

【A】

It’s great fun to explore new places ? it feels like an adventure, even when you know you’re not the first to have been there. But make sure not to get lost or waste time going round in circles.

●Do the map reading if you’re being driven somewhere. It’ll be easier if you keep turning the map so it follows the direction you’re traveling in. keep looking ahead so that you can give the driver lots of warning before having to make a turn, or you’ll have to move to the back seat.

●Get a group of friends together and go exploring. You’ll need a good map, a compass (指南针) a raincoat, a cell phone to call for help in case you get lost, and a bit of spare cash for emergencies (应急现金). Tell someone where you’re going before you set out and let them know what time you expect to be back. The test is in not getting lost, not in seeing how fast you can go, so always stick together, waiting for slower friends to catch up.

●See if your school or a club organizes orienteering activities, in which you need a map and a compass to find your way. This can be done as a sport, with teams trying to find the way from A to B (and B to C etc) in the fastest time, or simply as spare?time activity. Either way, it’s not only good fun, but a great way to keep fit.

56.Sitting beside the driver, you should         .

       A.direct the driver when necessary

       B.look ahead to see where there’s a turn

       C.move to the back seat if feeling uncomfortable

       D.keep looking at the map to find a place to go to

57.Why do you need to tell someone your exploration plan before setting out?

       A.To get information when in danger.

       B.To be saved in case of an accident.

       C.To share the fun with him/her in exploration.

       D.To tell him/her what’s going on with the group members.

58.Orienteering activities can          .

       A.make people work fast                        

B.help people stay healthy

C.help people organize other activities     

D.make people get prepared for sports

                                                                      【B】

Children have their own rules in playing games. They seldom need a referee(裁判) and rarely trouble to keep scores. They don’t care much about who wins or loses, and it doesn’t seem to worry them if the game is not finished. Yet, they like games that depend a lot on luck, so that their personal abilities cannot be directly compared. They also enjoy games that move in stages, in which each stage, the choosing of leaders, the picking-up of sides, or the determining of which side shall start, is almost a game in itself.

Grown-ups can hardly find children’s games exciting, and they often feel puzzled at why their kids play such simple games again and again. However, it is found that a child plays games for very important reasons. He can be a good player without having to think whether he is a popular person, and he can find himself being a useful partner to someone of whom he is ordinarily afraid. He becomes a leader when it comes to his turn. He can be confident, too, in particular games, that it is his place to give orders, to pretend to be dead, to throw a ball actually at someone, or to kiss someone he has caught.

It appears to us that when children play a game they imagine a situation under their control. Everyone knows the rules, and more importantly, everyone plays according to the rules. Those rules may be childish, but they make sure that every child has a chance to win.

59.What is true about children when they play games?

       A.They can stop playing any time they like.

       B.They can test their personal abilities.

       C.They want to pick a better team.

       D.They don’t need rules.

60.To become a leader in a game the child has to         .

       A.play well                                           

B.wait for his turn

       C.be confident in himself                        

D.be popular among his playmates

61.Why does a child like playing games?

       A.Because he can be someone other than himself.

       B.Because he can become popular among friends.

       C.Because he finds he is always lucky in games.

       D.Because he likes the place where he plays a game.

62.The writer believes that         .

       A.children should make better rules for their games.

       B.children should invite grown-ups to play with them.

       C.children’s games can do them a lot of good

       D.children play games without reasons

                                                                   【C】

Most rain forests lie to the equator(赤道), where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above, causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet, warm world with plenty of sunlight is perfect for plants to grow, so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds, which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts, keeping temperatures fit for plant growth.

Rain forests slightly farther away from the equator remain just as warm, but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the "monsoon forest".

Another type of rain forest grows on tropical mountains.It is often called the "cloud forest" because clouds often hang over the trees like fog.

The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten, the seeds inside them go undamaged through animals' stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.

63.The climate of the rain forests near the equator is ________.

       A.mild, wet and windy                    

       B.hot, rainy and foggy

       C.hot, wet and cloudy                     

       D.warm, wet and sunny

64.We can learn from the passage that ________.

       A.tree leaves are green all the time in the monsoon forest

       B.there is a dry season in the cloud forest on tropical mountains

       C.clouds help the plants in the rain forests near the deserts to grow

       D.the formation of climate in the rain forest has little to do with the trees

65.According to the passage, ________ play the most important role in the spreading of seeds.

       A.animals            

       B.droppings         

       C.fruits                 

       D.winds

66.This passage is most likely to be found in _________.

    A.a travel guide     

    B.a story book       

    C.a technical report

    D.a geographical book

                                                                   【D】

 Indian’s snake charmers are to be retrained as wildlife teachers under a plan to prevent their unique skills and knowledge from being lost. The charmers, who make snakes dance to the sound of flutes(笛子), used to be a traditional feature of Indian life, performing in towns and villages, until they were banned in 1972 to control the trade in snake skins.

The government is now considering a plan to train the saperas, as they are known, to visit schools and zoos to tell children about forests and wildlife. There is also a proposal to set up a “dial a snake charmer” service to help householders to deal with unwelcome intruders (不速之客).

“For generations they have been a feature of Indian life but now they can't earn a living for fear of arrest,” said Behar Dutt, a conservationist behind the plans, “if a policeman doesn’t catch them, animal rights activists report them.”

Many snake charmers have continued to work clandestinely since the ban, despite the threat of up to three years in prison. But their trademark cloth-covered baskets, hung from a bamboo pole carried across their shoulders, make them an easy target for police.

The fate of Shisha Nath, 56, from Badarpur, a village just outside of Delhi, is typical of practitioners(从业者) of the dying art. “I used to earn enough to support my family and send my children to school,  "he said. "Now it's hard to earn even f, 1 a day. My children want to be snake charmers. It’s our identity. We love the work. But it s become impossible.

Next month Dutt’s project to train 30 snake charmers will begin at a snake park in Pune, western India, where experts will enrich their home-grown skills with some formal knowledge.

More than the law, though, it is the dishonest attitude of their fellow countryman that angers many snake charmers.

"'We're disturbed all the time but when people want a snake removed from the house, they rush to us," said Prakash Nath, who was ordered recently to the home of Sonia Gandhi, the Congress party leader.

67.   According to the passage, snake charmers will be retrained as wildlife teachers mainly because______.

A. schools need large numbers of such teachers

B. most of them cannot support their families

C. their performances on the street are banned

D. the government plans to save the dying art

68.   The purpose of the proposed "dial a snake charmer" telephone service is ______.

A. to give performance of snake dancing

B. to teach householders how to catch and kill snakes

C. to offer cleaning service to wealthy householders

D. to help remove unwanted snakes from the houses

69.   The word "clandestinely" in paragraph 4 can be best replaced by the word "_______"

A. secretly                      

B. publicly                     

C. attentively                   

D. diligently

70.   Which of the following statements is NOT true according to the passage?

A. Snake charmers can easily be recognized by the police on the street.

B. Children of snake charmers would not like to continue their fathers' job.

C. Snake charmers are quite angry with the attitude of their fellow countrymen.

D. The animal rights activists take a negative attitude towards snake charmers.

 

 

 

(II)任务型阅读: (共10小题;满分10分)请认真阅读下列短文,并根据所读内容在文章后表格中的空格里填入最恰当的单词。每个空格一个单词。

What do you usually use your cell-phone for? Calling friends or sending them text messages?

As technology develops, nowadays cell-phones can do much more than that. They have become an all-in-one device.

A typical example is Apple’s Phone. The touch-screen cell-phone plays music, connects to the Web, sends e-mail and takes photos. More than 1 million Apple’s Phones have been sold since it was launched in June.

“Today’s young people enjoy using all kinds of digital functions, such as those of a music player, a camera and even a computer, constantly. An all-in-one device is easy to carry. That is the goal of developing a technology to make our lives more convenient, simple and relaxed,” said Professor Ding Shouqian at Nankai University.

However, the all-in-one cell-phones come with some problems. Users have complained that they are too complicated to use, and that their battery life is too short. Cell-phone producers say that they are working hard to make their phones even better.

It’s very convenient to use it. “We are trying to make the cell-phones in a way that people can quickly move from phoning to taking pictures and listening to music,” said Alastair Curtis, Nokia’s chief designer. “If you look at the Nokia 3250 model, it has a twisting bottom. So you twist it half a turn, and it’s in camera mode. You twist it another 90 degrees, and the alpha-numeric(字母和数字的) keys have disappeared and the music keys are there.” Japanese companies such as Toshiba and Fujitsu are also working to develop a new battery for mobile phone.

If all the problems are solved in the future, all-in-one phones will change our lives for the better.

(71)___▲__

It can play music.

It is (72) ___▲____to the Web.

It can (73) ___▲____ e-mails.

It can also be used as a (74)____▲___.

(75)___▲___

It’s easy to carry.

It can make our lives more (76) ___▲___,simple and relaxing.

Problems

The cell-phones are not (77) ___▲___ to use.

Their battery doesn’t (78) ___▲___long.

Ways to solve the problems

Make it easy and (79) ___▲___to move from one mode to another.

The companies make better batteries that last(80)___▲___.

 

(请将本题答案写在下一页的指定位置!)

 

班级___________姓名____________________学号___________

任务型阅读答案:

 

71. _________________ 72. _________________ 73. ________________  74. ________________

 

75.__________________ 76. _________________ 77. __________________ 78. ________________

 

79. __________________ 80. _________________

第二卷(共25分)

第四部分:写作(共三节,满分25分)

第一节:单词拼写。正确理解句意并根据首字母或中文提示,拼写出单词的正确形式,每个空格一个单词。(每空格1分,满分10分)。

1. With people’s living standard being raised, more and more p___________________ cars are springing up in China.

2. He once a month goes to America to do trade with some companies there, for which reason he is called a

f __________________ visitor to the USA.

3. The KFC tasted so nice and delicious to mouth that it soon gained p__________________ across China.

4. They have had to p____________________ going to France to see their friend because their child is ill.

5. It seemed that the car had deliberately v___________________ the traffic regulations, which drew the attention of the police.

6. The number of thefts of ___________________ (车辆,运输工具) has risen by a third in the last three years.

7. He has invested a lot of money in the stock market, and therefore he shows great concern about current ___________________ (事务,事情).

8. The tablets will work more ______________________ (有效地) if you take a hot drink after them.

9. Another team consisting of 11 members was sent to the earthquake stricken areas, including an ______________________(建筑师).

10. The strong smell of cigarette smoke _____________________ (确认) what he had said: there had been a meeting minutes before.

第二节 书面表达(1题,满分 15 分)

假如你叫Jack,你在自己的学校就“是否应该支持农民工进入城市”的问题进行了一次调查。下面是对部分学生调查的统计结果,请你参照该统计表给学校报刊写一篇英文调查报告,并简述你的观点。

有利之处

1.外地民工积极参与城市各行各业的工作,为城市的发展做出了贡献。

2.他们从事的大部分是又累又脏甚至是危险的工作,如清洁工、保姆、建筑工等等。

不利之处

1.       城市更加拥挤。

2.       乱扔垃圾,影响城市卫生。

3.       带来了安全问题。

你的观点

注意:1. 不要逐条翻译,但可适当发挥。
2. 文章的格式已给出。
3. 单词数:150左右。
4. 参考词汇:1.农民工 migrant workers   2.当保姆 babysitting  

Dear editor,

_______________________________________________________________________________

 

____________________________________________________________________________________

 

____________________________________________________________________________________

 

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____________________________________________________________________________________

 

____________________________________________________________________________________

 

____________________________________________________________________________________

 

____________________________________________________________________________________

 

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____________________________________________________________________________________

 

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____________________________________________________________________________________

                                                       Yours truly,

                 Jack

 

I. 听力:      1―5 ABCAB  6--10 ABCBC   11―15 AABCA  16―20 CAAAB

II. 单项选择: 21―25 CDBAD   26―30 BCDBA  31―35 ACCDB

III. 完形填空: 36―40 DACAD  41―45 CCACD  46―50 DABCA  51―55 BDABD

IV. 阅读:  【A】56―58 ABB 【B】59―62 ABAC 【C】63―66 DC AD 【D】67―70 DDAB

V. 任务型阅读:  71. Functions   72. connected  73. deliver / send  74. camera  75. Advantages

76. convenient  77. easy       78. last          79. quick   80. longer

VI. 单词拼写: 1. affairs     2. frequent   3. popularity   4. postpone    5. private 

               6. vehicles   7. violated    8. efficiently   9. architect   10. confirmed

VII. 书面表达:

Dear editor,

Recently we’ve conducted a survey on whether to support migrant workers in their moving to cities. Here is a brief report about it.

On one hand, migrant workers do play a very important role in the development of cities. They are actively involved in various kinds of jobs. In particular, they just do jobs such as cleaning, babysitting, and building, which are usually tiring, dirty even dangerous to their health and life. But these jobs are necessary and basic.

On the other hand, with more and more migrant workers coming in, the city is becoming more and more crowded. Also, the transport is much busier than before. To make matters worse, some of them don’t pay much attention to the cleanness and like littering everywhere, making the streets very dirty. The worst of all is that some even turn thieves if they cannot find any suitable jobs.

As far as I’m concerned, migrant workers have made great contributions to the development of big cities. Without them, we won’t have so many high-rise buildings. But if they can be well educated, it will be better for all of us.

                                                                   Yours truly,

                                                                Jack

 

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2.理解吸热反应、放热反应与反应物及生成物能量的关系;

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考点聚焦

1.  理解氧化还原反应的本质和特征

2.  从多个角度理解氧化剂和还原剂等概念

3.  会比较与判断氧化性或还原性强弱

4.  知道常见的氧化剂和还原剂

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7.  能运用氧化还原反应的规律进行有关计算

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