1987-12-01 — Page 24

頁四第張六第 日一十月十年卯丁曆夏

WAH KIU YAT PO

報日僑華

二期星

日一月二十年七八九一曆公年六十七國民華中 育節誦朗

右)合攝。 秋生(左),及中文朗誦會執行委員崔民超人 小學組二人對話朗誦,二除冠軍與評個

卅九屆校際朗誦節特輯

評判劉秋生指導。 中五、六年級二人對話朗誦季聆融

酒判卡隆恩教導小朋友時

盈盈。 燕、亞軍羅頌因、及兩位季軍麥子茵和梁 中一英特獨誦(由右至左)冠軍張玉

山五、六年級二大對話朗誦評判劉秋生對 冠軍之之

英文中學同學,細聽評判劉秋生之福。 中五、六年級二人對話朗誦亞軍迦密一

中二英特集誦,亞軍得獎隊伍逋望中

恩比賽時精彩的一幕。

.

(左一)黄之祺(左二)合攝。 恩〔二〕尹安琪(右三)、季軍張詩 才先生與冠軍竢慧絲,右一)、亞軍會訊 小學二年級女子組散文獨誦評判彭水

十五、六年級二人對話朗誦二隊亞軍,

瑩盃王林派剣(左)與甘

與評判合照。”一度以為小風(中),則薛特劉秋生合照。

GEOFFREY WEEKSERI ».

LINDSAY ERNSEEDING 14.

英詩集 新法寺院・

打合照 亜空英寇(左)、一心(右)興 中一、二年級二人對該開四四四A

中三,四詩文集誦亞軍得主東華三院

黃芴南中學

,

打氣,评後兒一同拍照留念。

冠,同學們高興地图著老師的一幕。

聖公會諸聖中學獲得中一、二詩文集

·張小燕同學的爸爸媽媽特前來爲女兒.

小學六年級女子組粵語詩阿獨誦各得

排・拳軍通佩芬、林嘉及

· 小學組二人對話四季季軍優

左)、季軍梁啡 七B項冠軍張偉一)、调婉欣 小學六年級女子組粵語詩詞獨誦三

與評判劉秋生(左)和中文朗誦委科崔民 中五、六年級二人對話朗誦華軍得主

龙七

腾、亞軍孔美琴及吳綺雯。 海報:後排左起:亞軍閻影、冠軍劉劍

學的同學代表,上台按受評判常宗亲先生 中一、二詩文集誦冠軍聖公會諸聖

↓的銃發分紙。

1988中學會考 試題預習專欄

4.

數學( + )

明懑出版社

MILL I DALE PRESS

Revision Exercises

for

Cert. Exam. (1988)

MATHEMATICS (10)

Test A

Attempt ALL questions in Section A and SIX in Section B.

Section A (50%)

1. In figure 1. ABCD is s

parallelogram with

· ΠΕ

are

the, mid-points of AB sand, CD, find the ares ́of the shaded region.

Figure 1

Find the equation of the straight, line: poasing through the „intersection of the lines x+3y-6-0 and 2x-y+7-0 and -eòntaining the point..........

Aï' shown in figure 2, *AGD · and BCE÷are ...

traight 11 LAFB-23

lines.

LABC-110

and LCDE-115, find LBFD

*

Е

4cm

Figure 2

As shown in figure 3.

the edges of the box

are 4 cm, & en and

8 cm, find the angle

of a diagonal of the

box makes with the

largest face.

H

Figure 5

Jon G

5. Find a and b if (x+2)

and (x-3) are factors

of x+8x+bx-18.

6. Find the values of A.

A and C if

2

(Ax+B)(x+2)=2x*+€x=4

is on identity.

7. If x:y:2-1:2:5 and

x2+2y2+322-336 m

find xy and. z.

Section B (60%)

8. Plot the graph of

9.

2

y=x-2x+1 (−5<x<5),

and solve graphically

(1) x -29--8-0

2

(ii) x2-xmbe✪

(iii)2x-5

-52-12 |

(a) If S1(n) denotes the

sun of "first n terms

of the progression 1,3,5,7,... express S1(a), in

tern of n.

(b) IT S,(n) denotes the sum of first teras of the progression

express S(h)-in--- "terna" of naslepotier, as madei

(c) Find the value of n

143474 ton terästan #1+2+3+4+«toin terms

10. The greate's

alope of

hill is 40° to the

horisontal, what will

be the slope of e

path on the bill

which makes an angle

of. 30° with a Line of greatest #löpe &

11.Given the

and

the roots of the quadratic equation

~~6x+c=0

2x2

2 2

(a)express £2 + ß2

in terus of c. (b)IŤ Lek, 8+k are the of x+x+b=0,

roots

2

express a, b in terms of k and c.

(v)If $=2α, find c.

12. In a certain college,

40% of students have

brown hair, 25% have.

blue eyes and 15%

have both brown hair and blue eyes. A student is picked at random from the college.

(1)

If he has brown bair what is the probability that he also blue eyes?

(li) If he haa blue

eyes what in

the probability that he does not have brown hair?

(iii)What is the probability that he has neither brown hair nor blue eyea?

cone

13.In figure 5, D

frustum of a (formed by cutting a cone through a plane parallel to the baar) haa radii 2 co and

4 cm and the distance "between the two ends;

facea are 3 cm apart. find

(1), the height of the cone from

"frustum

home body which the f

is cut. (11) the total surface bwaren of the

frustum, (iii) the volume of

the frustum,

22

ત

is not inverted **

o2 cm

(vi)

Figure 5

2

To prevent the

growth of bacteria

on dead seeds.

(vii) (1)Im flask A, the

temperature viporcases

teadily with time. It is because the germinating seeds

empire and produce heat.

10 11

14.x+y+2fx+2gy+c=0

represente a circle passing through (-1,1) and (-1,3). the centre of the circle lies on x-y+25.

(a) find the values of

f. g and c;

(b) find the centre of

the circle;

(c) find the radius of

the circle.

生物( + )

明灃出版社

MILL & DALE PRESS

Revision Exercises

for Cert. Exam. (1988)

BIOLOGY. (10)...

Solution to unit 5:

Respiration II.

8

To show the

production of heat

by germinating seeds during respiration.

(11) To prevent heat

loss into the surrounding and ensures that the temperature inside flask will not be influenced by surrounding temperature, (iii) Some air should.

be left for the ***géèda "to"respirov |(iv) To prevent the seeda from falling out and

((x)

to keep the thermo- meter in position. It also allows air to

the

flaskeveldig of vrata pengen beh It is because the de Wara air is lighter and rises up and escape if the flask

the

(2)In flesk B, temperature remain low for

35 hours, after which the temperature rises

abruptly.

It in because

dead seeds

support rapid growth of

bacteria. The respiration of bacteria produces

large amount of heat after 35 hours.

(3) In flask C, the

temperature

remains unchange throughout the

experiment. It is because the "seeds are dead and have been sterilized so that there is

no respiration to produce heat energy.

(viii)Flask C acts as the

control to ensure that the heat released in other flaske ja due to the respiration of living tissues.

8

(LL)

3

(1) 20 mg/100 cm (2) 98 mg/100 cm3 During vigoivus exorcise, oxygen supply to muscles -is-insufficient for

aerobic respiration, the muscles undergo anaerobic respira- tion by which ***glucage is broken-irakas

down into lactic

(111) It takes time for

the lactic acid to "diffuse from muscles

into blood,

(iv)

pxygen debt. (v) Glucose (vi) After exercise,

lactic acid is being oxidized to release energy or converted back to glucose in the

C (vii)

8

presence

the

of oxygen.

2. oxidation of

Bubstrate

3. End products

1. Oxygen

Aerobic respiration | Anaerobic

Complete oxidation

Carbon dioxide and water

1 molecule of glucose)|(2800£J); 38 ATP

4. Energy releaned from Large amount

5. Occurrence

In most living

organisms

Not required spiration

Incomplete oxidation

Plants: CO, and alcohol Animals: lactic acid Small amount (150 to

(e.g. yeast and bacteria)

and vertebrata muscles

In lower organisms

210 kJ); 2 ATP

Banbag

The glass wool

becomes dark brown in colour.

(ii) Tar

(11)Tar contains

irritanta that cause "narrowing-of-the-~~

bronchial tubes, inflammation of the La capture my mas matin manbrane Bd"

may damage the cilia. “Tar" #lboʻcontains-

carcinogens, that may cause cancer,

(1) The cigarette smoke

also contains carbon

DIREN SALMe and

nicotine. The carbon

8

39

(11)

nonoxide reduces the

oxygen carrying capacity of the blood. The nicotine

increases the blood pressure and heart- beat rate.

To show the production of heat and carbon dioxide during anaerobic respiration (alcoholic fermen- tation) of glucose by yeast. Bicarbonate indicator ur water.

(iii) It containe

lime

indicator solution to indicates the liberation of carbon dioxide and prevent the entry

of bacteria to spoil the fermenting mixture.

(iv) To prevent

(v)

atmospheric oxygen diffusing back into the solution. To drive off any dissolved oxygen.

yeast

كم

-(vi) ....... Sugar: alcohol---

carbon dioxide

energy

(vii) Anaerobic respira-

tion or alcoholic fermentation. (viii)The temperature in

the thermometer risea because yeast. cells respire anaerobically and "produce heaty'esboss (ix) The bicarbonate indicator turne yellow or the lime water turns milky. This indicates the liberation of carbon dioxide

from the reacting mixturezanton Alek (x) ~-It-fa-because the

Latted due to

maranthemlock of glucose,

and accumulation of alcohol: Thevýcast- sink to the bottom af the flask that, makes the "contents

clear.