1987-12-24 — Page 30

華僑日報 All

日四廿月二十年七八九一曆公年六十七國民華中就

四期星

報日僑華

WAH KIU YAT PO

日四初月一十年卯丁磨夏

頁二第張八第

誕愉快氣氛。 .與會兒童按受聖誕老人遺貽粒物,-

滿

演嘉賓致送會典留念,

店禮堂舉行,參加者近兩百人。 香港皇家警憑空手道表演精彩的降,代向表 龍長周明梅主持,聯誼組主委劉漢華邀請 及祝罋緻午安份,本月廿二日下午假希爾頓酒

香港西區扶輪社 女賓日慶祝聖誕 西藏

本港新聞

毗迓嘉賓及樂隊音歌爲葉老棁獄。(天 ) 資深毗友無庚年適逢八十八爲快樂生辰,

·樂富街坊會舉辦

會,前日

众大

讀者來函

來函請附 眞實姓名 地址電話 寫清楚 個人遭遇 社會問題 路見不平 歡迎投訴

人網 頭的香港社會,開騷 Q 少年有逐年增加而 福利主義、英雄主義抬 價值觀念模糊、功 科早已發展到專上課程。 ——一年齡却有下降的趨勢 學術性,如果我們認爲家政科所傳授的智識 非只飯煲粥

實用兼具學術性 我們不能否忍在 視及推廣到專上教育。在先進的國家,家政 學校社團無良策 夠有效率地將家庭打理得井井有條。所以家 青少年問題嚴重 智,足夠的家政常識,二人分工合力,才能 政科已不蝘專爲女生而設,應該比前更受重 性要否定了它的 爲家政科的實用

我們不能因

多多參與。」

區議員王松泉、會長劉漢棠主體。

。 發裤所接觸的個案實例不無關 離家出走;未婚媽媽;恻事 一件;學生加入黑社會;老人問 係。很多的耻會問題:如少女

亦無形中扼殺了家政科在教育上,社會上可 。該會是推行家庭生活教育的先鋒,這與該 迫屬於次等或劣等的質素,這無形局限了家 香港家計會皎先察覺到家庭生活教育的

主席潘九致詞剂:「爲增加居民歸屬感,

以一個中四學生的年齡反成熟性程度是很難 犧牲品。在實體靑年不自愛之餘,作爲教育 ||大合斫市政局議員楊勵溉及及岔佩儀、黃大仙 附太過重學科的知識性而忽略了倫理教育及 我校原有中四學生不少成績不錯而而表示對 重要性,認為這是一個最應谠受重视的科目 政科應有的發展對該科固然是極其不公平,

曲藝欣賞會」,美東邨臮愚登樂社担任演唱,在大眾都看到問題的所在——就是現時的敎 由於現時的大學教育,偏重於學術性科目, 下午七時,假樂富中心廣場,發行「樂富坊眾,來手無策,學校計了疲於奔命,不少關心考」,那對於這一科所包括的課程內容,在其 工作者的我們,是否應該檢討一下我們現時 谁知自己將來的性向的,學生往往不問自己 坊衆曲藝欣賞會 街坊到。面對這個令人心痛的事,學林老師已親 技能是不學而知,認爲這抵是「刻飯、煲粥 1 公民教育,意志薄弱的青少年,做了商業的 家政科有興趣,最後衹有極少數選讀了家政 少年問題的志願團體似乎都在急謀對策。現 幅度及深度兩方面便犯了以偏概全的無知。 的科目。由是家政科可以吸引的學生往往被 以發揮的機會。

海上醫生,陪靑少年度身訂造的一套您摩機的教育導 的興蟋能力,嘅顧選讀一些能夠與大學所接

服務,出出力,表示讚揚與鼓勵。 四與坊衆薏千人,-

滿熱的氣氛。(类) :則爲中、潘學動、梁悅突致滋紀念品與主禮 主席鄧爾中致謝詞,曲藝演唱隨即展開 ,

會何林、黃雲山,顧問:呂超璇,主席 隨綪主称人致詞,對坊會首腦之熱心爲

設晚間大學學位課程 加拿大管理學院在港

由家鄉問雞所引發的。

班;因經濟、感情或疾病所在

生的家庭慘劇等等,基本上都

加拿大管理學院 CANDIAN SCH

OOL OF MANAGEMENT(CS

KIIRES 家庭是社會基礎 家

| M) 成立於一九七六年,位於加拿大多倫多市

目的在灌輸學生正確的家庭觀

念認定自己在家庭內的職份,

0 「協會三——七八九〇一次。

TBA)外,更得到多間專業學會承福而接納爲: 會員,包括:英國商業營理學會〔-CM),《任 。 對於灌個人的公食1 S 一 T Y 認可,並頒授學位(BBA)或(m,人除了履行自己在家裡的職份 , 其學分除可獲加拿大N. D. UNIVER。而家庭是社會的基礎,每一個 | A.JUCI - NAS A G U 等。完成此誤程後,使植物不致枯額或彈曲生長。 | 資助成立,其主辦之工商管理學課程,得到世】的國國;而學校發育及家庭教 界多間學術機構承認,包括:A A C $ B、C心得按時施肥灌溉,修剪, |OGG FOUNDATION GR A N T || 個家是一個人在那裏孕育成長 !爲一所非牟利之高等敎育機構,由KELL,水視與家人的關係,明白到一 關係之務, |志在港過修工商管理之人仕,可查詢牛津教育 獨特性,那便是透過一切與日常生活有密切 加拿大根准行政經理奉命 〔C S M )及加拿大、親親了。而中學的家政科在道兩方面正扮演 mi在社會上遵要履行公民的責

穿便有如一個及格的園丁,惱 織及加强對社會的貴任感,公民教育使不容

家重須庭家滿美

兵談上紙作當可怎

-一榷商長校武廣王與一

。師敎政家。

的發揮機會。 不同性向能力的學生各有不同 避免不必要的資源浪費及給予 應包括較多實用科目,無非要一 乃提出蕷科課程應較多元化及 作準備,或屬一種資源浪費, 悅科的課程術爲學生進入大學 有幾人?最新白皮書法於原有 平預科課程能順利進入大學义 乃浪費社會資源 陳 讀書只爲考大學 學生

港大拒縠家政科

港生無機會深造

營養學、膳食設計等課程、 深造機會。如本港的中學課程也刻意了學生 學生不讓師範獏顧有到外國才有再上程度的

學院,紙設於中學課程,如果 ?家政科在香港除了設於師範 地位將受到如何的低既及打擊 上的地位及一般人的心中的一 接受的科目,試商搉科在課程 日在本恨聲明家政科列於不被

|工商會計師學會(I CI A) 等 - 凡在臧而有着一個重要的角式。但家政科還有其本身的 這個選擇,他們就算有機會多了足夠的基

譚伯鴻九秩晉一壽慶

礎去應付或根本不夠快件被取蝕。而每一個

一欺待親友,筵開廿桌。 一起 廣盤、廣塲是夕假銅鑼灣怡東酒店設鹈筵任何一個成熟的人應有的起碼條件。 「務中心」,金馬倫山獅子會創會肏長,昭倫公司保家居安全;家庭開支預算;消費常識等 所會長,九龍培童軍會會長譚伯,本月廿一,這些課程內容似乎與大學學科扯不上關係 家族數十人圍繞餅前鼓堂稱贇。昭倫公所理 應列入專上課程 有效率地去推行日 支配我們社會未來的主人點。在教育上有任

〔特胍》西環街坊醞利會「酆伯鴻老人服

防性及發展性,後者是否應該得到應有的重 。結構原理;各搥去污骼的不同作用;如何護 怡東酒店設筵宴親友、常生活的密切性: 如食物的營獾;產品的製法去科正的。醫生與社工的工作性質同過補 芯 家政非女生獨專

作及保蝉程序;如何保持新生;家庭用品的 救性,而家庭生活教育及家政常誥則屬於預

日爲九秧晉一榮郚,承廢子:廣榮、廣華、》,但是懂得照願自己及家人的起居飲食, 言語不通的憐人手裏,我們不能再看著無辜

活的問題,而絕對不是死上談兵。如果我們,老人飲食、社區營養及植插與飲食不當所 | 式,讓團的好導下常生 文明社會也應該關注的問題,如幼幼兒護理

翻開家政科會考的課程阋看醐學習範圍與日 引起的疾病,是需要營養學及正確的烹调方

宴前承慶子、孫陪同壽星公婆切生日餅,

工爲了方便她能更 據知有一個記 的下一代任由心智不成熟的父母去繼續推海 ,我們更不可能由笔視電影等傳媒去帶及

我們不應再將看誣幼兒的資任完全交到

喜氣洋溢。(天) 向老銳。承慶子孫畢杯向親友致謝,

可否將之從新估計。 有一個美滿的家,夫婦二人也要有成熟的心 壽桃祝賀。與會嘉鈎親友合唱「生日歌」舉腹,大多数的家在夫婦二人也要出外工作。要 相關的科目,及有持意母發展的科目,我們 山獅子舍會長謝啟豪向阿老先生致送騫屏及金讀三年家政。現在家庭的經濟結構再不如前 發揮的就會作用?對於一個與我們生活息可 長許釣光、九龍塘京會主席謝國華、金馬俭 已喜歡的社會工作,毅然放下工作到外國修 何决策之前,我們可否審慎地考慮每一科所

壽星公婆切生日】。

置,叔伯高九铁苷一类悲,承慶子崮 傳呼機納牌費 小市民盼減免

編輯先生

尋人

今時今日,資訊發遠,是社ø進步的微 傳呼機的服務甚普遍,但是有些傳呼機

李可大(萬龍)尋

兄長李守恒、平安 陳香尋弟陳雄

讀者王志明 的,大眾參商。祝貫報業務日上 在空軍服役" ,四川省忠縣阿德鄉人,原城都空校畢業,

| 對於防止不法之徒利用傳呼機作諸如放高利貸 黃資裡、溫毒等活動有帮助。愛恩所致,望得 | 關修例。訂立守則,限制其事業之運作,相信 再者,政府應討論有關傳呼通訊方面的有

|是否也要付牌費呢? | 我想政府應予減免爲是,有如家庭用戶用電話

伍大維轉李可大收。 忠縣同德鄉人,請知其下落者告,致謝。 來信地址:武漢市武學民主路三二四號 .三、我兒徐正平,年六十左右,四川省

| 用戶黹要付牌費,点按加水用之生活成本。

·及表兄徐正平

部除,分別至今未瑭,深爲想念。 一九四八年他在上海平凉路島徐璐司令裝六

·十餘歲,四川省忠縣同德鄉李家大塘八,一 一、兄長李守守恆,學名萬海,年巳甲

一二,兄長李平安學名萬和,年約六千歲

番收。

封家書,此後無替信。望見報或知情者請來 焙像伍出國,五零年由香港九龍飯店寄同一 入重慶憲兵隊,後任上交警,一九四九年 儅。地址:四川省南-

市孔爾街一二二號陳

歲,四川省遼寧縣北因郷人。一九四七年考 陳雄,乳名九娃,派名陳國,五十餘

在本

1988中學會考

試題預習專欄

物理(十三)

一明遵出版社

MILL SDALE PRESS

Revision Exercises

for

· Cert. Exam. (1988)

EPHYSICS (13)

4hsMoment and Paralle

forces

(A) Moment

The moment (or` torque) of a force ̇about a print (or an axis) is the product of the force and the perpendicular distance of its line of action from the point (or the axis).

It clockwine moment is taken as positive, then anticlockwise moment is taken as negative, and vise versa. And the resultant moment can be found by adding moments algehri enlly.

Example:: Moment of F

about (0)

Moment of Fg about

Fady Moment"at Fa about 0 × -Fz3z3.

Resultant piament

(B) Parallel Forces

(a)Resultant of like

OF

moment of F about 0

0-F1x40sine-FyxBasinA

P, XAU

=

F2x80

Note: R is always on the

outside of the line

joining the forces

and nearer to the

larger force of the

(C) Couple

A couple is formed by two equal parallel forces in opposite direction. A couple cannot replaced by a single resultant force

it produces rotationaí motion but no translo tional motion, The turning effect of a; couple depends on the magnitude of the... moment of the couple

Moment of a couple (about ANY point in), the plant of the forces *magnitude of one (of

the forces) -perpendicular

distance between the forcea

|Example 1:

A light rod aubjected to four forces is shown

in the diagram.

(a) Ie it possible to

replace the forces by

a single force? (b) Find the resultant,

A

moment工 IN

4N

5N

·Solution: (a) No, it is not possible for the forces. produce turning effect only. (b) Take moment. about A. The resultant moment

(4)(1)–(5)(2)+(6)(3)

3.

"the resultant

moment'about any point (say, A,) is 3Nm clockwisely.

Example 2:

In the figure, a wheel of mass 100kg and 10 min diameter rests' on a

(b)

4,899 m

Take manent about

Fx0B = (100)(g)XAB

Fx(1)« 100(10)x44899.

Fo 4899N

The forto required ia 4890

100%

the resultant moment

about ZAĽO

the norms1

reaction at the

upper end is GUON,

(c)neutral

equilibrium

Question 20

(d) State the oxidation

number of the elements underlined

in the following apecies:m

(1) KC10

(ii) Mn04

(v) HNO

(Ana.)

(b) XFx =

0

化學(十三

(iv) C107

2-

f =

= GOUN

4m

the frictional force ja buON.

(e) ¿Fy = 0

No-160g = 0

N2

166g=1600N

Revision Exercises

for

Cert. Exam. (1988)

The minimum force F required should be.. tangent to the wheel as glown in the- diagram.

Again, take moment about A

F'KAC= (100)(g)x48 F*x10 = (100)(10) x

(4.899)

P = 489.9N (Ans.)

4Equilibrium of a body

under coplenar forces:

If a body is in equilibrium, it follows that

(1)The resultant force

on the indygia zero or the sum of their components along any direction

zero.

EFx=0 and EFy=0

(2)The resultant

moment of the forces about any point (or axia) is zero.

· EM = 0

(Note: This shows the

body will have nò rotational

acceleration)

Note: Also, we recall that when there are three forces acting on a body and being in equilibrium, they must be concurrent, HemMCA we may apply the bar, principle of triangle of forces to solve the problen. (see Concurrent Forces)

parallel tornes horizontal surface comesvant “Examjile Trypt

The position.of. x can be calculated as

allows

Moment of R about Omoment of F about "0. Paintmoment of p

OF KAD

Note Ris always hearer

to the larger, force

The position:

he found as follo Moment of R cabou Kismoment 01.1

(a) What horizontal force you applied'at the uxie.

·would be necessary: to enable it to surmount A step of 4 ny third (b) What is the direction

and magnitude of the minimum' force:exertod to the wheelino tiűết the wheel Wilhe pulled up the step?

A uniform ladder of mea8 160 kg and Length

10'm in placed with its upper end.藓g形美体的 smooth vertical wall. T2 the lower end of the

foot of the wall, find (a) the normal reaction

acting on the upper sendinf the Inddar, (b) the frictional force.

between the ladder and the horizontal floor, aude M (e) the rosultant force acting on the lower end of the Jødder.

the equilibrio

therefore

APPENDIX

tane

=

1708.8 N

Ng 1600

600

=2,6667

0 = 69°271

(AH.)

The resultant at the root of the ladder is

1708.8 N

making 6927

with the

berizontal flour.

. Centre of

Gravity and Stability.

Sa The centre of gravity of

a rigid body in the point of application of the resultant, force duc to gravitational force on it, or the point where the total weight appears to act.

For a system üf coplaner weights, the position of the .g. is given by

Zmixi

ΣΟ

and 3

Stability

Zmivi 艺回复

A body which fa in equilibrium can be in a state of stable equilibrium, unstable equilibrium or neutral equilibrium, when the body is displaced alightly.

"(a) Stable equilibrium?"

it returns to its original position.

(b) Wuntable equilibrium:

it moves farther a kavay (ie. Its cig.

is lowered)

(c) Neutral equilibrium;

it remains stable in `ita displaced position

(ive, ita c.g. ig

MILL & DALE PRÉSS

CHEMISTRY (13)

Question 19

(a) A piece of sodium

(i)

metal which has been exposed to air far Home while is coveraë with a white powder 7. The whole specimet is then added to 40 of pure_ethanol nad

3 2240

of a colour- less gas X is antained, ensured at s.t.When the ексея thanol is

dist lef off, a

Cönsisting of

the compound Z and another compound Y is

left as the residue.

Give the names of the gas X, and the solids Z and Y respectively. (ii) Explain the forme-

Lion of Z, giving the appropriate. equations

(iii)Write on equation

of the reaction between sodium and ethanol.

(iv) Calculate the mugs of sodium which is reacted with ethanol.

J

(v) What would be the

mase of ethanel distilled off, assuming there is no Yoss during the irogenat

(vi) Suggest a safty.

precaution to

(vi) ClipCl2

(vii) CaSO

((z) MAC1

(x) CaH1

(b) Explain with the help

of the equations where appropriate, the following observationa.

(i) Bleaching powder

smells strongly of chlorine and gradually loses its hleaching power On exposing to air. (ii) A colourless

explosive gas is evolved when zinc ís added to dilute sulphuric acid. However, the evolution of the ges can be speeded up by adding copper(II) sulphate into the mixture, (iii) A piece of blue

litmus paper turns red. when put into dilute sulphuric

#cid-but-bacome a darkened when put into concentrated sulphuric acid. (iv) Both glucose and

sodfum chloride are white powder. However, an

aqueous solution of glucose is a. poor conductor of electricity

while an aqueoua uolution of sodium chloride conducts electricity readily.

abserve when dealing (£) 2.57 g of a compound

with boiling

ethanol teste

(vii)The ethanol is

·

80°C while the kælid

Y in unaffected. r this temperature. Baging on the above information, state

an essential difference in structure of the

«neitherɛraised more dema, sa only thanol-ahd-theat

lovered)

(a)atable

equilibrium

A

equilibrium

solid Y.

(b) State the conditions

underwhich, each of the followiugpaira

of substances can

be made to react:=

is completely

dissolved in 23 cm3

16 am

of 2 M sodium hytroxide and the: resulting mixture can pexactly, neutralize

of 1 M hydrochloric acid. (1) write,the equationa -of-the reactionR

involved. Ag ~(11)Calculate the value me

of X in the formula

Question 21.

(a) As shown in the

*(T)~gulphur dioxiderand-diagram-below«azing

oxygen gases

(11) Etuaaul and

o etapusio acid... (iii)Nitrogen and w

hydrogen gasea.

(iv) Iron filings and

makemaan teleton waterveys *^{v}@Sodium sulphite and dilute hydrochloric

productfäl

sandi writezanal equatim bithe reaction”?

rod i's placed in 1 M·· zinc sulphate aclution inside a porous pot. The pot with it's content is then placed in a breaker containing a copper plate and 1 M

per(II) sulphate Boluti

the

Ammeter

key

Copper

plate

Zinc

rod

porous

pot

2. S04

(1) Write ionic

equations of reactions at tue zine rod and the copper plate respectively.

be an electron flow from Y to X in the external circuit? Explain your answer briefly. (iii)Tn: what direction

would the-sulphate iuns pass through the porous pot? (iv) Would there by any

change in the colour of copper(II) sulphate solution? If the copper plate changes its mass by, 2 g at the end of the experiment,

(ii) Would there

(x)

what would be the

corresponding change in the mass of the zine rod?

(vi) Stute three changee.

you would observe when the zinc rod

and 1 M ZnS04 solution are

replaced by a silver rod and 1 M silver, aulution respectively,

(b) Several reactions

were carried out on

(i)

an alkenol A (CgH0)» Tag:abowein block

diarrant below.

Indentify and name) the substances A. W, X, Y and Z respectively, according to the IUPAC syyLems.

al,

alkene W

alkanuie acid K

A

Na 6 whitë

solid

a chloro- alkene Y

T

(ii) Slate the reagent(s

and conditions...

necessary for converting, A. separately to W, X,

Y and Z Give equations of ench of the above conversions. (iii) If compound pis

keated alone under high pressures and in the presences of "a catalyst, a

compound with s. large relative molecular mnse d abtained. (1)What is the

compound formed

memorem (2) Givawanyi

of its (iv) Give the name cand

heatruct

formula of Sa conjunt P-vhich isomeric with

:Compound wean.reu "with hydrogen:

chloride to give Compound B. Write tis registered - 5.- au equation of the

anmeter at han my reaction angry

the

Page 30Page 31

物人川山刋週學科 頁三第張八第日四初月一十年卯丁曆夏

WAH KIU YAT PO

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