1990-04-24 — Page 26

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大字四個 小字

九

春满

廣州春季展鏳訂貨會 固的外存底點让界六十億发元。 延至下月一日舉行

「首你美元),使得我市場,使種籽資金瑜

麇年阡平均塑点] 1 |

公佈首季盈利二 千 美Ë萬國對頭行 道利降五成

萬國寶通银行

NIE...

天然核师生產的是冯來 地三五卒中,印尼 一高,食增添房州市交通一直被泰國趕上,泰國將建離,分別居世界第三 治,罗两界第二步。位和第三位。世界首位

商務桧的可能。道)印尼農業務一官科 去年印尼生產天然 古打散會)」有干攒者交路透社雅加達電則檢長百分之十17 勝一百二十五萬哔

大田 印尼地位受威脅

'來自廣東省政府有一份人瑞先案、優惠為多。 「李賽誚訂陧合」已任期 種樂證向國內外客商發千萬美元,較去年同 哥熱的廣州市[九〇卷且,舉辦單位已通過多 是;鞣;高遠五億 攤,原定於本月十日九“阳祐碳内外市场。而期諫少百分五十六,主 (中國海梨社廣州一的企要树立產品形象一百萬美元,赖去年同 出並印發了十萬期的三億五千八百萬元

泰國像膠生產迭加

(〇九九一)年九十七國民華中

日僑華

育敏 濟桱 日九廿月三年午庚夏

會排宿會

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1990 中學會考預習專欄

明德出版社 MILLS DALE PRESS

*Biology(30)

ZR. Leung

-1. The diagram below represents cycling of carbon in nature.

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Carbon compound

Carbon connotands.

In green plants

1- (1) What should x be in the

diagram?

(2) What is the reservoir of

on earth?

Name: the processos A, B and C.

fii. The concentration of carbon

dioxide in the air

increased during the g years:

(1) Which processes

responsible for thi

1990:中學會考預習專欄:

Physics (3

Apiece of slone of na

from a balluon which is

velocity

·Mǝk

drop's

with

十年

粉紅茶轲債院幅放人,市海敕務嗽、普洱、花

、點極品

如大統計局银

台三月 底外匯存底

億存

的百分之五指店。 加拿大皇室做行和

分之五點三,低過二月

降至七百億美元 台強招男一位林先出

最優惠利率,日郭

我别外延在它的数字,中央爾行於外设高水平。 [台北訊)]有些第一,自一九八二年底以來的

(2) What is the harmful effect

of such, increase fiving environment?.

報日僑

東街日本中[整版仔的情况也會常州、發送給歌會各界及社

日圓選降並非世界經濟好兆

設備投資旺態持續 金已有回流跡象

総裁對經濟金融装樂觀

慢緩情銷葉茶

四初成穗

成減交會

成一升約價茶龍烏

二期星日四廿月四(〇九九一年九十七國民華中(26)

,向,快利,示

類

『對世界經濟來說並葉蟹·下廣州海珠廣場附近的廣 和匯中自然下懂的走勢的情況會持續下去 a_校酎交中心展廳蠢至 前野出强调,过所不光自日低,地將山廣東省經委

力彩今

行

却被日大迎本鵝,十廠澳等低人上 通

步們留。一向以來茶業在世界上今年底前不大可能低 别以接近銷日市場低格,举悫就令不少客而却 通龈醤洗所鼓舞。它在 本楼出、今上特別利打推施提高對近洋客行没有怎樣受到三月份

“有牌人薩,開大於議;近年英國等高企的

錦少絲交交交求下等上

石錄二五阙升至十四区七五 1

did

the

dry weight

(2) Why

Our

iif. Suggest

iv. (1) What is the ultimate source.

· of chergy for the cycling of

carbon in nature?

(2). At which process

ehergy trapped?

(3) In what form is the energy.

stored?

Explain why the amount of carbon incorporated by a young cow through process C is greater than that released by process B.

2. During an experiment to observe the growth of a plant, the dry weight was recorded. from tha time it was.d seed a seedding, an adult plant to Its death. The result is shown whatow

DEEC Month

(1) what process was carrying

out in January? ** (2)Mhy did the dry weight decrease during this period?

11. (1) In which month did the plant

carry out rapid growth?

ONG

above the ground. What is

taken for the stone to rea

geqund? (take acceleration deta

gravity

A 16 S

B. 25

D 20-3

10 ms 2)

E. None of these

合

率脹通月上大拿加 三點零分百高提 企高然仍力壓價物 息減能可不前庭年

increase diring this pertad? environmental, ∴ factors that may cause the rate of increase of dry weight to ̇stow down in 'September (autumn).

3. The diagram below shows part of plant root (1), and part of the wall cof: the mammalian small intestine.

(The parts are not drawn to the same. scale.]

I.cgar biof root.

Il Part of marmal fan

smat

tine:

ructures:

Whis is the di

r respect

organization?

and

ii. What are the common features of X and Y with respect to their functions?

iv. Nume the processes that are responsible, for the passage of materials into X and Y.

State two substances which (1) pass into both the structure

X and Y,

(2) pass into structure Y, bút,

not structure X

vi. Describe the processes involved for the attrogen of peanut to be absorbed by

(1) structure-X of a flowering

pment.

(2) structure y of man"

Solutions:

1.1. (1) Carbon dioxide.

(2) Sca is the reservior.

jí。A; photosynthesis

B: respiration C: feeding

lif. (1) Process E.

{2) By greenhouse

effect, an

龙 in

Increase to atmospheric carbon dioxide Lends result in an increase atmospheric temperature.

This may lead to melting of the polar fce caps... and: flooding of coastal cities.

(1) solar energy.

(2) Process A.T

(3) Chemical energy

molecules..

food

Sope at the carbon incorporated wwe waccumulated as the body kuspeices during the growth of

12.Mater

and y

a The graph shows the coting,curves

of equal masses of Ticurd.

Which of the following statements is/are correct?

hasahigher boiling

1. The specific latent heat of

liquid X is greater.

11 The specific heat capacity

of liquid X is greater..

KONG PUBLIC

2. A ball of Mass 1 kg falls on a

horizontal hard surface 自体

rebounds, 1ts shbeed " just before impact is 10 ms

and

1

imgeidiately after the impact: df. tha

time of contact is 0.1 second, the foree acting on the ball during the

Magnitude

Direction

upwards 4%

downwards

upwards downwards

only

The diagram shows the shape of a transverse; wave travelling. infinite string.

an

Germination of seed.

(2) At this period, the seed was incapitatekotosynthesis;

Waves

simultaneously

food storage for is results.

ets inpry weight.

by

are set

up

the vibrating probes A and B of a ripple tank. If the wave-length of the waves is A There will destructive interference, Cat Piffin:

PB APP

D. AP

RARIES

E. 'BR - AP

the figure, the reading of the.

voltmeter is

A. 320 V

B. 560 V

C 640 V

D. 240 V

E. None of these

14.In the circuit shown below, if the

key is closed,

At the moment shown, the points at

8. the voltapa

and.

A. the

current increase.

through

across

increase.

C.the.

voltage

across t

increase.

19.

D. the voltage

agross

decrease.

dis(1).Jûne.

(2) The plant carried out active

phatosynthesis.

iii. In autumn, the Tower temperature. and shorter⠀⠀⠀⠀ daylength (on/ smaller rainfall) may cause the rate of increase of dry weight to slow dow?,

X: root hair-

#f. 1 is unicellular while Yo is

multicellular:

111. Both of them have large surface

area and thin wald.

iv. Osmosis, diffusion and active

transport

(1) Water and minerals.

(2):Glucose and amino acids)

vly (1) The protein molecules of

peanut are first decomposed by the sofi badteria into nitrates which are then absorbed into structure X by diffusion and active transport. Ar The peanut is first broken: down mechanically into smaller

the pieces by chewing action of the teeth and churning" action of the stomach ..... The protein molecules are digested by: enzymes in the stomach and Intestine into amino acids which are then absorbed into structure Y by diffusion and àctive transport..

17. Two light

bulbs A and 0.when connected in parallel, the ratiù of their powers is 43. If now they were connected in series, the ratio of their powers is

8. 9: 16

G. 169-

As shown in the above figure, a pendulum bob is hung by a conducting wire pivoted at 0 and swings between. two magnetic poles. N and S. Positions X and Z are the extreme positions reached by the bob and Y is the lowest point reached by the bob. The ends of the conducting wire" are connected to a galvanometer 6, At which position of the bob will.

galvanometer. give max

the

deflection?

A. at x

8, at Y

C. at. Z

D. at both X and 2

E. the reading of the galvanometer

15 steady and has N maximum.

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force is applied at an angle 9 with the horizontal to an object of weight W. The normal reaction of the horizontal surface on the object is: A. Ecose

8. Fsing

C. Fsing + W D. Fcose +

E. Fsing-

When the system is released

system wilE Brewin

This stationary.

B. The 2 xu-block will move with

Boy form speed upwards,

The 2 ky-black (WILL HÖVA

with

uniform speed downwards.

The 2 kg-block w accelerate upwards.

: accelerate

5. A up Pub rectangular picture ABCD is suspeidest in different ways as

shown Below, Which of the ways gives the string a minimum tansión?-

6. A metal sphere (density 2700 kgm

la Montiga freely in morcury (density 13500 kgm^3). The fraction of the Sphereimersed in mercury js.

water

A cubical block of wood floats al the Interface batween pil and water with its lower surface 2 cp below the interface. If the volume of the block is 1000 en and the relative density of the ail 1$ 0.6, The mass of the block is

0.2, ce, gend

f none of them.

10. The diagram shows the shape of a transverse wave travelling along an infipite string.

Which portion of the string 15

A. the portion between" (a) and (e) B. the portion between (e) and (1) C. the portion between (c) and (g) B. the portion between (a) and (e),

and the portion between {e} and

E. The mortion between (c) and (e), and the portion between (g) and

11,Water waves are produced in a ripple.

tank by a dipper. If the wavelength ism and the dipper vibrates 40 times per second, the velocity lin is of the water waves is

B. 1.36 kg

C, 0.34 kg

A, 10

12. 6.8 kg

8, 20

E. Narie of these

C, 40

D. 80

{density of water " 1000 kgm

6. 100

E the total current will decrease.

15.An electric cooker nas two identical hoating coil which may be connected seniec or in parallel by a switch. Under the Same voltage Supply, the ratio of the heat produced by series connection to the heat produced by parallel connection

A 42 B. 2 1

0,241

15.In; the cinaitt below. Fo 物体

are the current through the 19, 28 and 30 resistances. The

:

The direction of induced currents through the galvanometer & inc(a) and (b) are

Tal

'A, from A. to B

A from F t C. from A to B

D. from 8 to A

Ib

from A to B

from B to A

from B to A from A to B

E. No induced current

20.The nucleus of 62

"bas

A. 82 electrons and 126 neutrons. B. 82 electrons and 126 protons- E. 62 prons and 126 neutrons" 0,126 protons and 82 neutrons, E. 208 protons and 82 electrons

B

4. E

.D.

8. E

9. C

41. C

12. E

13, E14. B

16. C

17. A

18. B

19. C

201