1968-09-06 — Page 15

背教僑華

貞三第張四第

日四七月七閏年申戊

WAH KIU YAT PO

·日六月九年八六九一股公年七十五個民華中

智慧出版社主

新數學入門

专文先修專關

67104.

社會科學

堅道美文書院主編

Leason 34.

16:9 S

數

埃及的數字

(EGYPTIAN NUMERALS)

元前3200年埃已経有了字和暦法定下 一年365日分為12個目毎月30日市具 也會建造金字塔子 在敷學方面他們在很え 已經表示出很高超的成就,大约在四千

1 埃及人已經懂得了整數和合數他們 存留下來の歴史書籍文契和数学的専門集子 2/11 4:29m (F BH1948 2 40*5*M.

在他們的遺物當中我們發覺他們只用五 国符を記録他們的數目

16 EN 所

表目

•1416) IJS (A STRAIGHT

na PSPOSSE 1 (HEEL - SCNE)

OTO 12 85363 (A coil of Rope)

CA LOTUS FLOWER)

-HDBITE (R BENT FINGER)

1000

Preposition (2)

Examples of relations expressed by Proportions

46. I am taller than you by two inches

47. He, Manged himself with a piece of cloth, 48. Hunoty Dumpty sat on a wall.

49. They travelled seven miles in wwe nours,

50. She jumped into the river

51. I am tired of walking. 52. They made a fool of me. { 55. He borrowed money from hai

54. She came to the

the road.

55. Jane was languhing at me, 50. I shall do it with pleasure.

57. I am sorry for what I have done

58. I will abide by my mise.

59. He starts for home.

60. She was rohhed ofher watch.

61, The boats were tied along the snore. 62. They quarrelled among themselves. 63. The monkey ran up and down the tree,

64. The sun shines by day

£5. He was absent over two weeks.

66. Preah vegetables are good for health. 67. He is good at crossword puzzles. 68. She died at an early age.

My pen is different from yours. Are you on duty now"

He sold it for a few dollars,

F F 3 W L A1 5 10 17 GXTZ 21017052 配合埃 便可以留下敷

72. It is cheaper to send gooda

sea.

他們

方法是這樣町

DONATE & the 1ste # te 610 ABRA

表的製目相 便以得到整骨鍋所代表 的難目了例如

73. The can looked at him angrily, 74. The ship was at sea for two months. 75. The crops depend on rain.

76. They get the house on fire.

77. They set fire to the house

73. She is thirty years of age,

79. Do not throw stones at the dog.

20. The child played with the

The car went at full speed

He is

in need of honey

83. Do not look down unon other people.

the town.

66. We cannot live without water. 87. The path leads through the woods.

58. Te hid behind the door.

They sailed down the river,

84. Wee Willie Winkie

9999 +3

+100 + 100 + 100 - 400

She sat by the fire.

( L L L L W K

1000+1000+1000+ 1000 – 40co

把不同代表性 多數自成符號 然便放

89.

行弧薐在一起民時候代表

爆代表少數

個噐代表

目相加起来便可

例如 03

對整推符號代表成數

* 1000+

Conn

K19mnul Ak' 180041000+100+10+10+|+I+1=2{2}

12₤999nnan it† 10000 + 1000+1000 +100-1100 1100 F).

10+10410410 =

(e (P9 32 ↑ it & OK ↑ FL12 & OM BAS”)

EDMILL

(10000 11-1100)

10000

210100

10000 + 10000+ICCO+ICO NED

21020

4 Ffr s @ -6 16 18 110 75 m 3EY

西行以節省地方私減少混乱 福

7001月寫成

90. There is nothing new under the sun. 91. She lost her purse through negligence 92 I did it for our mod.

93. I heard this through a friend.

94. He cut the string with a knife

Cloth is sold by the yard.

36. She broke the dug into a hundred

27. I bought it for ten cents.

33. This is a matter of little importance

39. She spoke to me in English,

100. I sent the parcel by post.

在埃及所数字中如果要表示31254連 個數目就要先將交合開

31254 = 30000+1000+ 200+ 50+4

D.

= 10000+10000₫ (0000 –

000 = 1000

10+10 + 10+ 10+

3 | 254–1111 99 3 //ME

*8, #c $ 32 447 0 34,128 ↑

30+4

200 = 1000+ICCE +1000+1000 +1000 1000+100

WEATHER FORECASTING.

The 'yaribale winds and occasional showers": weather forecast was once used to be the laughing) stock of the Colony. It is true in Hongkong that except during the typhoon season when gale force: winds with

can cause covers, and heavy rain perivas

local citizens are not unduly perturbed by weather'. Such is not the case else- where in the world. The vims of weather dominate the lief of every individual, Walking outside in a and blizzard in Cansd

can spell disaster and braving the 114°F heat in Iran will be a sure way

weather forecasting 15 very) to a sunstroke, Indeed necessary and rather useful to all walks of life. Weather information help farmers plan when to sow: and when to harvest their crujis; manhours, otherwis wasted, are spared when building contractors are warned of impending rain and change the working

ohedule, and International travels by arr and by sea are much safer. now adverse torms and hurricanes are being AVY.

Just what causes, weather, why is it fine or wat, how is weather predicted scientifically,... this series of questions are not at all easy to answer, Hung Ming of the Three Dynasty! Was proclaimed a genius for only having correctly timed the arrival of the East winds, for, to attempt to explain and forecast winds and rain, must require years of laborious study. Some insight into the subject, however, may be sought it we understand some fundamental facts,

(1) Air contains water vanour and volume of air will only hold a given quantity of moisture and not more. Neturally, warn air holde more moisture. than cold air, so when sir is cooled, it cu hap en that cool air may no longer accommodate all the water vapour which it curries, when it was at a higher temperature; Hence maisture 18 precilitated. Near the surface, it will be in the form or de fog or frost, in the upper 51%, i tomaniifes pa itseli

s cloud, rain, snow or even hail,

(2) Another important fact is that air, lagh as it is, has weight, Standing on the earth' surface, each of us is-supporting an air columu. 15 miles in height. Air in the atmosphere exerte 9 presssure of 14,7 lbs./eq.in. We are, in fact, shouldering about 400 lbs, of air above our heads, Should we be up in Victoria Paak, or if we are eve stop Mount verest, the extent of the air column. we need to shoulder 15 less, so pressure is not

early as great as would be on the surface of th. arth. In other words, stmospheric pressure becomes:

we go upwards away from the ground,

Jecause pres ure decreases with weight, a ris balloon will expand and finally burst. in the sam way

s parcel of air at the surface when lifted, will expand and upon expansion will cool. The moihture content in the air parcel. 3oor precipitated but. Cloud wall form, from which comes ruin. One therefore says Ascending air éreastes bad weather. and conversely, descending air compressed WAT G woruduce, clear skies,

grainer man utilizes a sensitive pressure neter called a barometer to detect, when aar curaenz are ascending or descending. Low pressure readings ormally indicate ascent, higher readings, descent. and if you still remember that in ascents are Associated with bad weather and descents good ones) you have successfully arrived at the Puls of weather forecasting, namely

LOW PRESSURE

unsettled and disturbed wenthet HIGH PRESSURE - Fine weather and clear skies

Next time beforeyou go to school or worĶ simply look at your bonometer. If pressure is rapidly, take along the umbrella and raincoat. it is rising markedly, you can smile and be off without too much worry for being soaked as the proverbial Chicken daw the soup!.

同學們也許會發與到這種記数的方法是 香名子過落我們要記録B自哢候 - *AMFW £u ini hin

# # (29:5 1 6Q NJ 18 (RX KBLY.

習题

(a) q

(b)132 .6912 (d)561

(e) 13238

将下数字稱為何拉価学

(@) 9

(b):999 nACHI

() fff 99 nn/

ady 117 € n00 118.

摩保璿

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真四第四第

日四十月七閏年申戊麼區