1981-03-29 — Page 19

刊特節樂音育教頁三第張五第 日四月二年酉辛態夏

1981

「中學會考試題預習專欄

生

物

(四)

明德出版社梁永華提供資料

RTOLOGY (24)

WMLoung

MILL & DALE PRESS LTD.

15. The following diagram

shows the. Life history mosquito and the graph alows the growth pattern of wriggler:

d) Pupa

با لوزية

(a), Adult

(b) Egg

Breathing.

tube

Time

(t) What process was

carrying out from a to by

(2) Why did the dry weight.

decrease during that periods

A what period did the plant carry out rapid growth?

At what time did the metabolism of the plant-

begin to slow down?

d. At what period is the tine

to form Fruits?

The following graph shows the changes in dry weight of potato stems," leaves. and tubers for weeks after the tuber sprouted

Larra

(wriggler)

Dry weight (g)

·∙149:

1.2

LEAVES

Body

Time)

What are the advantages of

having exoskeleton as în

mosquito?

(1): Name, the type of life

history that the

soaquite to undergoes, Explain why organismus which have a short life history as in muaqui to can adapt rapidly to the changes of

environmental

conditions.

C. ~Describe the feeding babit

the mosquitoes.

1) Where does the mosqui

lay the eggs?.

(2) Exp Min why a large number of OK£9714~* produced.

The graph shown the growth:

end of the larva.

growth does not take. place at X

(2) a rapid growth take s

Name one disease "transmitted by the mosquite.

the

With reference to

diagram only, suggest two Gefficient ways to feliminate mosquitoes, Give

reasons for your suggestim.

During an experiment to observe the growth of a plant, the dry weight was recorded from the time it. vas a sead, a seedling, an adult plant to its death, The result is shown below.

而距此她在职協會參加,橫,對緒控制得宜,)。

ORCHES EK BASI

段

TUBERS

STEMS.

5.6.7.8 Time (weeke)

What is the advantage of using dry weight as a measure of plant growthg

Describe and explain the change in dry weight of the old tubers during this: period.

From the graph, determine (1) the loan in dry weight - of the old tubers and (2) the total gain, in dry weight of both the stems and leaves

from 48 weeks.

tive a reason for the difference between (iii)(1). and (iii)(2).

ANSVERS:

The advantages of having an exoskeleton are as follows: (1) It is impervious so

that it can reduce water loss.

(2) It provides a d

mechanical support and. attachment for muscles. (5) It provides mechanical

protection,VAA

(4) It can be modified to

various structures.

such as mouth parts and wings

(1) Complete metamorphosis. (2) A short life history

permits

(1) organises 10 produce a wide

spectrum of genetic

variations among the offspring within a short time, and (ii) the selected:

offspring to develop rapidly into a aelected population.

WAH KIU YAT. PO

such a rapid färmation: of genetic variations and rapid establishment of selected population form the basis of rapid adaptation to the change of environmental condition.

The mouth parts of the mosquito are modified as a piercing and sucking proboscis The female t mosquitoes suck blood from mamma is while the malen mosquitoes suck juice from plants.

It lays the eggs in stagnant waters

(2) A large number of eggs

is produced 10 increase the chance of survival

(1). At X the body "is E

enclosed by the hard skeleton therefore no growth taken place. (2) AbtY, the exoskeleton has been shed away so. thit this buy can expand to allow rapid growth.

f. Malaria.

g. (1) Spray a layer of

-17.

paraffin or oil on the water surface: This kills the larva and pupae by preventing them from taking in atmospheric oxygen, (2) Drain the ponds, swamps

and vessels. This uestroys the ground for them to lay eggs.

{1} Germination of seød. (2) When the seed started

to germinate, stored food inside the seed, was being oxidized.

during respiation.

perind c to d.

At the time

At perioded to

Dry weight shows the actual changes in plant materials:

b. The dry weight of the old

tubers decreases during.... this period. The tubers lose their plant materials es they respire and as some

of their

報日僑華

stored food are: converted into the materials of the new planta, (1) 3.2

(2) (11.2 - 12.8)g - 14.0 6 Sone of the mass, 3.2g lost by the tubers may be going to leaves, and stem However, the total mesa gained by the stem and leaves is 14-20g in the same period. The difference can be explained by the fact that the stems and the

leaves carry out:

photosynthesis during this

period.

ttb

理

(#)

明德出版社李婉儀提供資料]

Geography (24)

Y. Y. Lee

MILL & DALE PRESS LTD.

47. The graphs below give

details of Japan's power supplies in 1962 and 1972.

Describe and explain the

main changes which have taken place in the power supplies in Japan du ring this period.

1972

Types of Power Supply

日期星

H. E. P. -Nuclear Power

Coal

Petroleum & Natural Gas

Total 344 million kilolitres (In Petroleum Equivalent)

Sources of Power supply

Imported Power

50%

0%

1962.

Home supplies

100%

Types Powe Supply

Wood

H.EP

Petroleu

Coal

Natural

Gas

Total 94 million kilolitres (In Petroleum Equivalent) Sources of Power Supply

Home Imported Power

Supplies 50%

100%

Suggested Answers:

General Changes of Power Supplies in Japan:

From the graphs, we can see that the total demand for power in Japan increases greatly. The reasons are explicit. In recent decades, industrial progress in Japan has been remarkable repid, this in turn has raised the living standard which contributes to the increasing demand. However, the stock of energy resources in the country is in a large measure meagre, so the country has to rely considerably on foreign supplies. As she has not been able to expand her domestic supplies, there is an increase of imported energy,

Types of Power Indicating Decrease in Importance:

Although coal is still the

second most important energy consumed in Japan, the demand

of it decreases. Despite the smell reserves, the.

production of coal in Japan is relatively uneconomical, (2) because the coal seams are thin and faulted. Besides the coal in Japan is generally of

BRUFK)

poor

日九廿月三年一八九一屆公年十七國民中

quality, only a small portion of which can be used for coking and other specialized purposes.

H. E. P. which had long been

an Important power supply in Japan, decreases considerably in importance. In recent years, the amount of thermal electric power outruns that of the Ma hydro-electric plants. Japan is quite well endowed with water power but most of the suitable sites had already been tapped before the War, and further development is hindered by the considerable fluctuations of river flowage on account of the Seasonal variations in

precipitation; the shortness of rivers; and faulted and previous valley floors. Some of the sites- may be populated by farmers and are remote from markets which means higher transmission costs.

Wood is no longer important

as a source of power because of the low thermal capacity and is. inconvenient to use.

Types of Power Indicating Increase in Importance:

The graph apparently reveals that oil has been playing the most significant role In Japan's power consumption, The consumption in petroleum, which is a convenient and relatively clean liquid fuel, is speedily on the rise as a substitution for other forms of fuels. It is greatly used in all types of transport means, electrical applicances and any. types of industrial machinery. By now, oil accounts for about three quarters of the total energy source in Japan, yet she is able to supply only a small amount and is of low grade. To meet the increasing demand, every effort in exploitating new resources and colaborating with China in extracting oil from the Pohái and the Yellow Sea is made. Supertankers are used which enable the importation of foreign petroleum at a low price.

48. Beuxite is often mined in tropical countries and refined in temperate countries, Using Austrilia as an example, give a reasoned account of her' production and trade of bauxite to illustrate this

statement.

"Suggested Answers:

Reasons for the Mining of Bauxite in Tropical Region:

Bauxite is a clay with a high content of aluminium oxide. Austrália is one of the important bauxite producers in the world. Most of the bauxite. is mined in the tropical parts of the country where 2319S runs across its south, e.g. along the

coast of the Cape York

Peninsula at Weipa and Gove.

Bauxite mining is a active in such tropical areas since bauxite deposits are mostly regions or in areas which experienced tropical climates in the geological past. It is because bauxite is the end product of tropical weathering. Nearly all clay contains aluminium compounds but only in areas where high temperatures and abundant. rainfall (condition common: in tropical climates) have led to a concentration of the aluminium oxides in the sub-soil. Only under the humid hot and rainy. climatic regions where red laterite spil is formed as a result of the accumulation of insoluble oxides of iron and aluminium minerals, it would have contained a fair amount of aluminium oxide known as bauxite.

Reasons for the Refining in Temperature Region:

Oftenly bauxite is not refined locally. Bauxite mined in the tropical regions of Austrialia is mainly for export. One of the determinating factor is market availability. When the ore is

mined, it is usually transported to the regions where aluminium

is mostly needed. Huge markets are usually the developed industrial regions where a lot of finished consumer goods made of aluminium are consumed or considerable quantities of aluminium are needed in construction industry. Since such industrial advanced countries are mostly found in temperate regions, alumina is mostly refined along the coast.

of temperate countries such as in Austrialia, bauxite is either. exported to the refineries at Glandstone, Kurri Kurri and Bell Bay, or to the temperate countries Japan, Germany, France and U.S.A., where a number of fahriation plants are located and the dense population forms ready market. Besides these, it may also be due to the fact that enormous quantities of electric power are required in the production of aluminium, so regions with cheap II. E. P. are favoured in the choice of refineries locations. Since most of the well tapped H. E, P stations are found in temperate regions such as in U.S.A..

ns such as in U

Japan, and Bell Bay in Austrialia, it is obvious why alumina plants and aluminium smelters are found there, But in regions with a rich coal supply, thermal power can be substituted for H. E. P. Most of the well developed coalfields in the world are found in temperate regions, such as those at Germany, and near Gladstone and Kwinana in Austrialia, bauxite is therefore

refined there.

唱合校學區港曲文中四三小

魁奪午下羅保女男

小是

喜可出演讚盛判評

癈活鬆輕) 跳⌋悽悲來唱[榮白小」

校午上血寶邨富華及祿多伯聖軍亞雙

追水歌滋

食演曲

曲:排一

第三届

··XIZHERLA

EXORKSYKERM

·表達的情崴诣很「醬」。 兩蒩亞軍都並得一百七十三分。 首歌曲唱出來的小朋友,才是真窗吸引人。

一個致宮音樂性的早录。.. 歌曲說:「不管是益的,乘車的,都愛把泉水飲 水清清涼涼,確實吸引每一個路經的人」。而實際上抱

華宮))上午校,他們间是一彞未來的歌唱家。.. 石排灣聖伯多碌學校的自選歌曲是一林中山泉」。 至於捷亞則分別爲若聖伯多妝學校及血 盃,也再一次爲聖保女小下午校四年前的同 他嚞以冠軍合共一百七十四分,並獲得愛好華女士 薛判表示,冠軍學校的窗安隹,他們唱得很「甜

·這麼一次高水準的演出,難怪胛判李察基夫斯也說 痞蠢的「跳蹦蹦」,這時小瓶发的笑面艾可爱得很。.. 不過李廷的歌曲唱罷,他們一轉身便赉來一首輕輕 - WERK - NCWSSENBLEERE JES -眞不難把一個「沒有娘j的可憐孩子的衡世家白。當然 * 若見聖侯描男女小學的小朋友,個個突变浴的唱, 一曲「小白菜」可謂家傳戶照,是兒時必唱的歌選 可奪得一百分的投入點,爲在接近百餘的聽衆,帶來 .遊愛五十八人的小小台唱團,就是過著那嘢一投足 .起來,因爲他們贏得铒激乎合唱,小三及小四的冠軍 〔特訊)聖保羅男女小學下午校的小朋友在的

福分,凡塵冠軍二分。

香港學校音樂節特輯

【一片杜鹃啼血的國啊,實在是別出心。〔妓、邵] RSS

、片靬、美樂笛、那你也在修行的水

花樹,也炮大中華兒女的意志,完全全的唱出來。其ㄡ一連軍樂般的開場序曲,已經「先聲奪

而蘇 小學的一曲「梅花」捧得全塲熱烈的掌聲。尅年紀小小的學生,委實將不慎風兩的梅

表現基本上不錯,分別一獎金。

KELTUSKEROS PURATHE(3 |

(保藏雷院及陳浩(九一郎了効果・

·香港作曲家作品鋼獨奏比賽前三名鋼「一欠十四分的梁永慧

SH

高域大然門姿態勝出,得七十四分。

【香島中學(屈居亞軍

一區事業,各同學能推定製。 項目三六九中级祖弦樂合奏軍拔兩男校。

*家長定现此照片以習紀念起身,轉將毎日刊 照片之專輯,每張照片定號碼,存在菜僑日報

片,每天分別在本刊出,爲便利各校同學或 香港校際音樂比賽,拍得之比賽頒獎之照

香港現台灣出的一百元一分八爺》 十八分,同時並獲得由〔皇仁院〕,七十三

校際音樂比賽圖片

本報中區辦事處

SFREAKCESORDEN

P = (##)

十七歲以下中舉女子合唱冠軍培遠女子中學。

優美的音色與歡欣的笑臉孔一起的中級組

BIKEFERERETZKLUSIEV