1年七十七國民華中
育教 岸兩
日六十月一十年辰戊麿夏
夏一
(30)
報日僑
「」人一化」物「先「化」人文能一化」物。 幾十個傷販 - 插
樓的黑商有上百
地图本的原材料 而谈天津來的
分子整西村- 大都是收瞒不法 鐵」,實際上,
懷親讓迷,出 地頭幾唱於1 的赍村甜一塊空 們在西途村周鎭 大批小商販 他 让,等地湧來了
代化,我們今天的就有了多少,到底有多少現代的 後,從河上,大 一從西產程開工以 行動介绍工 一區公安分局特别 诚北京离
中國科技大學教授還忘,不久前在北京的一次姿 的、人的觀念的現代化,大範圍地講迫包括文明的影 中國人呢,喜世打麻將,各自為改。 氣息,所以,我們說現代化是個全方位的過程,不「化 僅僅撈工業、職業、國防、科技的現代化吧。我們需要的心態甚至民骋在樂上上面,歐洲人喜歡打垮牌,所以 的是全方位的現代化。還要包括政治的、管理的、教育 “他們書於溝通,日本人喜轪下圍棋,有全局觀念,而 極十四年了,現在才發現「四化」的概念很片面。外短而息不均」的思想就念是目前的一大障科。這樣求均 改革的泥潭,走出前的危柢,就應該認到改革是全 種心理司傳統文化有著密切的關係。我們有一種落後心 方位的,現代化也是全方位的,大陸捷出的「四化」己 應三部曲:安打尊大,妄回非洲,然磴妃能。叫不止其 陷越深,二是開倒車,返百米,然後再找路,三是走出 火是心理蒩撈落後。現在放大的問滋是人心的渙散,這 三種選擇, 一個是情況不明,原地待命,五樣有可能越 三個村次是軟件中最落後的知人的落後。垃後的一些符 话中,谈到了他對全方位,明代化與傳統文化的看法。 件]落後,二是「棒也後,而五再嚴重,軟件的 他說:大陸改革的戰車已經被人建议,目前,面臨核心是管┌蕭制,經濟,教育,政治體制都需要收。第 他又說,日前大藏在山石进大上落後了,一是一
中國科技大學敎授溫元凱最近指出
改革戰車已經駛入泥潭 擺
脫危機靠全方位改革
六期星 日四廿月二十(八八九一)年七十七國民華中
地工村運亞圍包點黑惡罪
飛而翼不纜電口進
存倖一無窗鋁樓大
的的
上危機。 j,而且進行文化概念的改革,只有這樣,改革才能定 總之,改正是全方位的,經濟問題在政治上找到根
改革之路不通了
右一公斤的伯格,台籌建大陸資料庫
收購囧寶粥的鉅
一塊十多畝的土
独的
,詞棒後,轉手
【商正計劃建立一個大源。 。帐,嬴花等鋼材一时可理一千九百元左有協會和民間道腦設計. 求擴大大陸商请萊方衡路,读了四十種。
以二十元一公斤的價格開夜出去,像偷來的器 中華經濟研究院、外以「我們」并不清珠,若該朝還安小汽的「黑
供給工商業者使用 台灣經濟部國貿局 意的工商業者認怠這個人驚奇的是,在國務院 急通知一下達後,4個
額三百六十萬元,分 百二十誦,違反控制 消費酶公室批准的有
無章法的市,最後江西
術烹過工设颃賓,淳二二買商桨建築精緻,往往 百多米長的進口花料,科會各界强的寶情
,國家儿了大运外抵率 之後將在朱巧協會開版,一個多月前有關政策行 台灣外貿協會秘密 發動一做合作整制,;不胜,人大忙提当性 及中华超声分院越,引蒂法院執行长铁法 ,無獨有偶,湖南省
堀踟铝合金門窗,没他地方的獨特品,不妖 立了湘统,新落成的,已是這樣,可馬,其效,有異常權原木禁止設在行一個多月來,然後監們的執法好,湖南 ↑大帅子」的北斗·術教人透 問使用的計劃。密譞 執法犯法、陳視人
说,全被人全部處,是更精致地,
鳥集體合影排列座次
他們改果大壓商滿。怡 英單位接疝氣登海通,百尚没人民法流處理的
對違法亂花的人和事,
顯示新封建等級觀~台南遠百越開放一部) 通報代替處分子軌,甚至「資
「宵法版」近一篇署名文章寫道:
——今年敎師的王某地某俊來'}上級 · 地鐵南,去年一月至今
土工西省经貧困的」,宽窄的湖法之一
一,最後照例全體合影一張樹念,教育局之作。但湯望見到更多估 十稱,其中卡淨雀控制小事化了。
生,有的常年連:高中监未考上,社 個助說:「中問這位顯赫入物多虑我的 ▲白的「人類念魂工程師,一位老教師 猫囥先米[狂上+叽弨越站在兩
·學生領好愛龍若驚號其後,我排 代法粉繕其右,工會上海首批树立其把 長面露微笑,安詳穩坐中央,婦聯主任時
15 ONE-Seines - J
一地區∫力誌」會欣合影,中間一
八有著「堂堂天子想當中,,悠久傳統的文 【性質的集留台影,賀至此,一間到底是
•阿卡出所工作任務擎重,容为线 商業生、大型展希活鳥的心安。 , 所進行調查後吃,日前一些忧 晚容、習復動務工作利器時性的 语,公安在件之京的公演出 鹘點的管理,從非經常性內請查 「人民公安賓」飛道+鼓 推筒,市容等各方面用强對疫案
公安部調查派出所狀況承認
裝備陳舊經費緊張
警力不足任務繁重
許在北京市中心的一個大型派出 ,被清查的東華門派里所是
▲ 十五江•童一下五百人,轄區
張重
智、病床的以外,費要在回具有 亘在七十六、除被借用以學、 目前,與慈院撞所在亂絲窗
M十三號家作出。生活在發現科 做状况良好的复抬百分之二十,
▲派出所民警塑常年配合「、」 派出所的三室工作已達九千多項,病出所的惊斗也就可想而知了。 形成失監的矛盾,被統計•這個如此,那麼那些處於偏遠地區的
▲備,近年來,派出所乘過的,長期有訥的佔性分之十。 || 南河沿食品街等於華地區,在中 大湖、市、际所屬各單位六百六
一位夢到俱灰的宮是說:一
我記得我在北京市中心的讓出所進件过
1989 中學會考預習專欄
二明酒出版社
MILL & DALE PRESS
120(s)+11,9(c)+heat
Black
spongy
(2) CuSO4*5H2O(s)
blue crystal
Chemistry (13)
(c) It
Unit 7(Continued)
R. Chu
8. Chemical Properties of Sulphuric
acid (H2SO4)
8.1 Dilute sulphuric acid is
strong dibasic acid. Ios
series of salts: the
2-
(norma: Salt)
hydrogen sulphates, HSO_
salt
half
acid
cond ete neutralization respectively. e.g. K250. NaHSO4, etc.
8.2 Concentrated sulphuric acid, beside being as an acid, has 3 important properties that dil Hox, not
have.
(a) It is a strong oxidizing agent.
On oxidizing other substante, it is itself reduced t selpaur
dioxide (S). Heatingly
required in order to increases oxidizing power.
2504
#20 - 902 + (0)
for
[6] 9.N. decreases (-4) oxidistas
It oxidizes all metals (except gold
and Platinum) to their oxides.
年
Stage I Preparation and
steam
502
or
conc. 504
CuSO4(3) = 5×20{£;
white
is non-volatile, displaces the more la acids.
Fespondas salts.
is
8.3 When conc. 50 is dissolved in water, a large arount of heat
When Thus,
diluting liberated.
onc-H2SOg with water, always add the acid into water and stir the mixture constantly. it is dangerous | to add water into conc. H2304
skin severe
burns when spiit on to skin because it destroys the skin tissues by dehydration,
8.4 Conc. H2504 causes
It also chars the cellulose readily by dehydration when spilt or to clothes.
If such spillage of conc. ¥250g
affected the
wash
ad
occurs, first with a large amount of water and then with a misted paste of sadium hydrogencarbonate which helps remove the last traces of
by neutralization.
Uses of sulphuric acid
the
uses:
The basic metal oxides then react with
H-50 4 to corresponding salts and water. enge(1) Z+2lly80gms>ZrS3 +24+0+50g {2} €m+2K230;z CuSQ2+ZH2O+SO2
It axidizes many non-metals. e.g. (1) C-2H50 CO2+2!!20+502 (2) 3+2H50380,› 2H÷0
It also oxidizes many compounds which are reducing agents. e.g. H2S+2Hz 504 * 2440 + 5 + 502
Write ppt.
(b) ft has a strong affinity for water. se, it is a dehydrating agent anc can be used as drying agent for many cases, e.g. Cl2, HCl, etc.
conc. B,50g
0.9 - (1) (42 #22011 (5) -
Sucrose (white)
in used
making mory
For daily substances
fertilizers,.g. ammonium sulphate, superphosphate ete paints, pigments dyestuffs drugs, detergents and explosives,
artificial fibres, e.g. rayon.
(2) H2SO is used in petroleum refining for removing the sulphur in the crude oil.
(3) H-SUq is used in car batteries. (4) H254 19 used in electroplating of iron for "orikling" the iron plate.
10. Manufacture of HS04
manufactured 4250 is
Contact Process.
by
The prccess consists of 3 main stages:
11.
Purification of 50.
is obtained by burning sulphur! roasting sulphida ares (eg. Fes,, 765).
$ + Cyx+ 502
4FeSy * 1102>2HP2O3 + 8SCZ Stage - Catalytic oxidation of 50 to 503.
Pt or vadani
Conditions: 45c°C and tall
pressure
Stage 1 Conversion of 80% to
11,504.
in
50g is dissolved directly in' 'conc. to give oleum H2507.(It is because not dissolved
water 30 reacts with water violently to give misty fumes of acid droplets).j Oleum 's diluled with water to give ordinary (98%) conc. H2504.
S23 (0) +1250 (1)
Sulphates
oleum
-
11.1 All sulphates are soluble except. that of B2+, Ca2+, Ag*, Pb2+.
11.2 Sulphates of less reactive metals
decompose un strong heating to oxides, sulphur give the metal dioxide and/or sulphur dioxide. e.c. Fe507420FeSO2+7H0
white
pale-green 2FeSO4┳• FeyO3+SD+S0g,
11.3 Test for soluble sulphates:
If white precipitate Tecbtained onadding acidified Curium ritrate Choice of Larium sqiution to a salt solution, the salt is a sulphate.
2(aq) → Ba5C4(s)
Ba2+ (aq) +$04-
Question 7.3
2.
(a) Name two simple compounes composing of sodium, st' phur and oxygen atoms only. (b) State) the respective
in the two numbers of sulphu compounds mentioned in (a).
cxidation
(c) on reacting with aqueous bromine solution, one of the two compounds mentioned in (a) is converted to the other.
(i) Write an ionic equation of the reaction.
(ii) With reference to the change
the oxidation rumber,
14
whether sulphur atom is oxidized or reduced in the reaction above.
(d) Both corpounds mentioned in (a) ferm white precipitate on reacting with aqueous barium chloride solution. However, on addition of an excess of dilute hydrochlor acid, the precipitate in one case remains while that in the other case disappears.
(i)jame the compounds contained in the wrecipitate.
nic equations of their
Solution
to Q7.3
(a) Sodium sulphite (ka,S0,) and sodium
sulphate (N504
(b) 0.A, of 5 is +4 in Na2503 and +6 in
Na2S04
1
{c}(1) S3g*(aq), Bry(aq)→
„2′′ (aq) + 2Br"
(ii) As S-ator has its 0..
increased from -4 (in 502) to 16 (in 20,2
(d) {i)
which precipitate Solved in dute hydrochloric acid? Give the vir the reaction.
equation of
(e) A
saphite sample crystals which has Brear exposed to air for severas is dissolved in water to give a solution X. When aqueous barium chloride solution, acdified with dilute hydrochloric acid, is added to the solution X, a white
obtained. precipitate
for reason Suggest. observation.
Question 7.4
15
a pale-
Iron(II) sulphate in a
(a) What is respons
colour.
green colour. When test-tube, the solidates
the pale-
near
the
Green colour?
{b} lihat would bearserved
mouth of tostuda?
the
strong ating
anhydrous ironphate obtained above gives a weddish brain residue and white dense fures, The fumes are dissolved in some distilled water to give a solution X.
(c) What is the reddish-brown solid? (d) Solution X is found to be able to
acidified decolourize
potassium dichromate, What substance does this change suggest to be present in the gaseous procucts?
(e) Solution X is also found to form a white precipitate on reacting with acidified bartim chloride solution, What substance does this change suggest
present in the gaseous products? (f) Write an equation of the reaction when ironil) suiphate Is heated
strongly.
оп
(g) If 3.2 g of the reddish-brown solid
15 obtained
complete decomposition, what is the mass of. iron(I) sulphate crystals (FCS04-74,0) reacted?
it is oxidized in the reaction.
Barium sulphate and Bartum sulphite.
50.
(ii) 'Eu2+(aq) +.SDg2"(ac)→BaSOg(s) Ba2+(aq) + .sogén (aq)→ BasOz?s} (iti) Barium sulphite is dissolved .
BaSOg(s) Ehi*(aq)------->
Ba2Tag!
+
HQGtk] +$0ziy)
(e) It is because sodium sulphite is partly oxidized to sodium sulphate by air. The sulphate ions reacts the white barium ons to give precipitate Of
barium Sulphate which is insoluble in dil HCl.
Solution to 7.4
(a) The hydrated iron(II) ions. (b) Water drops are seen near the mouth
of the test-tube.
(c) It is *ror(III) cxide (Fe2z). (d) Sulphur dioxide (302). (e) Sulphur trioxide (50g).
{f} 2⌈e50°C(s)→ Fc0gis}+50p(g)+50g(g) {y} Molar mass of FeS)g*7H2C-278 9
Molar mass of 「ep03' = 160 ?
According to the equations below, FeSO4 + TH2O FSU, +70
2Fc$04→→ F#¿©z+$©q+£Cz
.". n(FeSO4 7H20) reacted
-n(Fe50) decomposed
= 2xn(Fezig) formed
3.2
=0.04 mot
.. mass of FeSO· 720 reacted
-0.04x278
#11.12 @
兩岸訊息
*NKAKAVALAAAKZAKKXXXXXXMAY
一定有興爆。」
握不住的情
凼受缩速竽利好發先 但是墨經理的汉惠挡不同•
首元把际意得驚愕不已,
二十:泰警沒有再出 現俱樂部 并不因拜他怕看張照樾,而是
即楼了。她心想,可能在我們 這我會出事也說不定,但设知
「我曉得。所以我來晃捏經 點和殿料理,還有徐小姐a}
兩位經理布所有邊衛科都 左右便出現,可造兩個刑警還趁 笑了笑,但是没有说话。
煮,會繼續來俱樂部。 溼經商跑級去,朝著張補述
富天晚上,張超縺笙-┣一時
反而顯出善意接待
者暖風雲
國來了兩名用筈,進追踪......」 「張小姐一直留在香港?來
徐立却在另一種想法, 正一游·汪特意沒有出現。
心中音質感動,但荒才滿了一切。 李海底,王糖偶的陪同下,一路看來, 穿着中的怨質,在接製作人 ・朱秀娟、
活說了「半就已張淑盈盈,再到不住 【你西是要找章念就是了,一读书
已等着她了,
上去 0
挺拔的男士站在台港上等着她。紫書你 ◎ 出才出計記牢門,就看到「 粉西向他們笑了笑,次断着路一步步的 性」男主角何世君和另外一個同英俊
和鲜花宁到了攝影祗,董事長,總經理 「親」盛大隆重開創的桂產科息
,共畲磁鼓的給家任寄到沙烏地阿拉伯
「小斂,」
漫功氣
談呢
魔掌黃
#道正
根申氣定神闊,卓無耗神疲乏之感 奥伟黄仁忠大師親自登会,他輕醫
受兩不接觸,誠屬奇妙。功畢,但羗馬 許,見指幸反動伸縮,病者葫手科 ,有如發案,可上下提動及糾動,她與 中氣功師以指葉發功,雙方距離約兩尺
↓功力深蓝
附法,吞火炭一上,首由根
,此爲觀止, 圈掌聲當點,歷久不 閉咀好動,湖吞下,我眼相向,但見舌頭送活啓動、 必無根毌。他連吞兩次,輕鬆自如,其功夫骂坐族訝 火燒烈,坐可感,黄仁忠以箸夾出,往山中一逛, 點燃,放入口中,盡演者開口,火球便因氧氣缺乏就會 蛮動抱憾。「吞火茄」就不同,一蛴做透的能烈, 。一般魔術表演也有「吞況」,不過那是以棉球及酒精 一影相續,抬至正常人也不可能抬的高度,有如光幻。 隨後,黃忠與演出一吞火炭』- 逅出其功力深厚
爆冷
香江雜詠
老女戀少男不算奇事
少女老夫是人生佳話
老點少逛,老人
上年青的男子時,則受人背後社值。
_超眾中有不少港報記者,必相影謎,找了釋疑
在在需財百事牽 大家拼搏過新年
李友背後談論,就是走在街上,起發受到浴
一相反的:老位女子戀
人都認為好事,
,是人生陸活;恆,
懋上年少女子,一般
運會指爲「可笑一的事情,亦會令她的
1989 中學會考預習專欄
明德出版社
MILL & DALE PRESS
Generally, the calculation f elasticity of supply is as follows:
percentage change in the Elasticity quantity supplied
of. supply percentage change in price
or in symbols:
E
=
台
2.
Inelastic, ile. Egㄑ1.
4. Perfectly elastic, ine. E = d.
P
TYPES OF ELASTICITY OF SUPPLY
Economics (13)
There are 5 cypes of elasticity of supply:
Alain Li
ELASTICITY OF SUPPLY
The Law of Supply states that the quantity supplied changes in response to 冠 price change. The degree of responsiveness of the quantity supplied
tc a change in the price of a good is called price elasticity of supply or simply elastic ty of supply.
1. Elastic, i.e. Es > 1.
P
F
近
15
$
$2
$1
נו
16
35
$4
$3
52
51
1
2
6
Fig. 13.2
3. Unitary elastic, i.e. ES 1.
$7
起
$4
32
13.4
5. Perfectly inelastic, ise. Ef → 0.
FACTORS AFFECTING
THE
ELASTICITY OF
SUPPLY
0
1
5
6
7
1
2 3
6
7
Q
There
Fig. 13.1
Fig. 13.3.
elasticity of supply:
您 4 factors affecting the
1. Storage of goods
The easier the storage of a good. the greater the elasticity of its supply. It is because if a large stock car be kept. the quantity supplied can
increased or Jecreased more easily.
2. Time allowed for adjustment
Production takes time. The longer the period of time allowed, tic easter the adjustment for the quantity supplied, i.e. the greater the elasticity,
3. Mobility of production factors
The easier the
of mobility production factors. the greater the elasticity of Supply. It is because if the production factors can be easily maved n or out. the production can be easily increased or decreased.
4.
пен
Ease of entry The casier the entry 呀 suppliersi the greater the elasticity of supply. It is because if the producers can easily join or leave the
the production, production can be easily increased
or decreased.
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