REFERENCE LIBRARY
12FEB 1972
寶教僑華頁三第張七第二日八廿月二十年亥辛国ITY KAYAT
報日僑
1972中學入學試 試題預習專欄
•28.8元+600元+6=0.89
六期星日二十月二年二七九一骞公年一十六國民族书
20,若人民蛾利計算,張載至000元,問三年得本和印度
我?
R3%
PQRST.
T.: 4.50%
3.□□□□□.
9. 20125076?• ENFISE • WSET BASEMA131067
P
PRRS.T
□□□□□
06375元,同里对向强行道歌若于?
23.806032-
0.25 1,500 140
(解)時期:
(1409元~500元~0.8%+353
P
2500元
R 3750
例:临欸若干年10%,每年大個月炎,不息
·備若? 《解法,借密碼
4-36,25C1-4-10%
10.3550元:
$4050元
B. A
D.四分五庭:
手所得利息1951年少花費5元,問某人存款若于2
PQRST
170□□□□
智慧出版社主編
E. HOLL
ABCDE
V18: DOODÜ.
在1400元入银行十四月德利禸55元,間行街过的適息是多 25、本企3000元。二年得利包240元
A 3
數學科
(十五)
本金5000元,年利42.5%,單野算,問一年八個月科息
A完电銀行储款603光,年年初二分,
E. 2.50
AECDE
彈利息算法
149
13. 14-95 (JH1500
40元?
28. 借款30000元
E2083
□□□□
ABCDE
的刺龙加2
桃子,百分
¥3700元
CB7A360 HE
同時以每月份
10%
0.3.0%
檢送
15%
米
A. 75.4
8.152.62
c. 17.050 S
D. 57,000
B. 135-550
ABCDE 3.□□□□□
A 954
D. 86152
ABCDE
800
500*2.50 »
下列
(2) SHEN, LAGUM
亦可分作出院
ABCDR.
R. 75000
1,000:
3.500元:
2500
"FORST
O□□□□
A- 17005%
201500元。
2100050-TALE WRES
B.2700元: D:700元:
DE
存款3000元,8月和思平80元,閒月
我 吧
13.□□□□ 法多少黑
29. 43,444X71185, RK7
沿
B. 0.23
C. 0.125
D. 0.5%
E. 59
ABCDE
14. 00000E
30,将沿海强行10000元,單算。
疑古今小滿,訂联夺利一分 的差额是多少?里
您在內,共230元,時
B:1500元
上期想過:練變麵十三然九個“Q,622053 元感,
D. 6300
ABCDE
15. □□□□□
TQ. 622053-IN
然
第1題190.1%,問書審人共付多少?网
1 01%,寄人在英進欲到湯19.2%,問客 人共付歇多少?
練習潁个三答案
(1) C
(4) A
(5.) D
(SY P
(7) R
(B) S
(10) P
(11).B
(12) B
(13) ·E
(14) G
(15) D
103元
17750元.
(17) 2056
(18)1500072
0.25%
€217120
(22.) 7.5000
(24)5000元
(25) 408050
(26) 5%
10
(27)918元
1500元*3%x 1:20元
化學科(十五)
新
復習六解餐
·甲部(共50%)
工選擇題(10%,每答案壹
(1)無水硫酸亚鐵是:(1)E,白色粉末
(2)亞硫酸氫锣是:(二)A.黄色液體) 3有锰氧是:() A. KMnOy.
(4) 辰砂的化學名稱是:(4) C.硃化汞
(5)硫代硫酸鈉的你名是()B大蘇打 (6)淫确的分子式是(6) Q.Nas
(7):三氧化锑是(7)迟氧化劑
(8)5碌是氧族元素
(9) 智利硝石是: (9) 尺硝酸钚
(10)礬油是:(1)S濃硫酸.
工填-
题(407)(每答案式分
AC3-氧化铅豆()黄色,
(6)二氧化鉛是()棕色,
四氧化三鉛是(3)紅色。
(5)磁化亚铜监:沈澱黹黑色,浴於硝酸 不溶於水,故狡中性溶液沈澱而出。 5)(硫化亞銻塩或綠 S6 SSH溶 兹酸不溶於水,故能在中性溶液 產生黑色或橙色沈澱。
(6)(硫化亚铁盤 FES,能溶膽酸不溶
冷水,故能於中性溶液中產生黑 色或深棕色;有金屬光澤的沈澱
(7) (硫化钠盐 Nass,能溶於酸鹼 及水饭店沈澱;但將港液蒸乾後 得淡红色粉末,此粉末不落於醚, 但有吸濕性,能吸收水份而成無 煎结晶 Na S.9H2O;此結晶微
醇
(8)(硫)夠盐 Cas, 能溶於酸及酶 微溶於水;故將酸(氨水)性溶液 以酸中和後,得淡灰色混濁之港 液。蒸乾溶液後淡灰色,體 能發螢光。
(9)(磁化)钾盤 122,能源疗酸、鹼
及水,蒸乾溶液後得紅色結晶;活结 晶能溶於醇及甘油不溶醚, (10)(硫化)铝塩 PbS能溶於酸及鹼,
“故於鹼性溶液中不生沈澱;芒將 溶液中和能生黑色或銀灰色沈受
?)(碳化)银墟 Ag2S 能溶於濃硫酸 ̇及硝酸,不溶拎水,沈澱為黑色。
19.
PQRST
日:472.5元,問望修
0
)(硫化)鎖 Bas,能溶於酸、国家及本, 将渗诙蒸乾後得綠色及灰色粉格
3)(硫化)锅湓 CLS,沈澱為黄色;池漆
说水,不溶狞稀酸
I)(硫化)必您 BiSS,浓炎能溶狡硝酸
不溶於稀酸,亦不溶於水。其沈澱為 显棕色
(三) ()硫化亚锡的分子式是(15)Sns顏
爸為(16)橙色:
(ii)硫化锡的分子式是(17) Sn2z,月
色為(18)黃色,
() (1) 碳化铵(NH)S為(19)黃色結晶
(1)硫酸铵 (NH) SO4為(20) 灰棕色
或白色結晶:(視純度而只
乙部(共50%)
I.寫出下列各化學反應方程式,
HS在下列各種情形中的反應:
()在空氣中以火接近之。
()現象:()若氧供给-
足,則生青蓝色之
而燃燒產生刺鼻氣體
10+25Q7 BB 最氧供給不足時則生黄色的
華!
·245+0. •2H20+75/ (6)與二氧化硫混合。
二氧化碳能將硫化氢氧化成水
245+50-
通入濃硫酸中
2H20+3S
硫化氫能將硫酸還原而生黃色的 沈澱。
4H20+454 HL50%+3HS-
(d) 與银器接觸。
硫化氫在空氣中與銀器接觸,則 使银器受室;因硫化银為黑色。
KAg+ 2H2S402-
•ZAg2 5+2 He
通入醋酸铅溶液。
醋酸铅变和硫化铅;其颜色 可白色轉化為黑色,
HS+ Pb(CH3COO)→2CH.C00H+PLSE 期愛
未完
1072英文中學會考試題預習專欄
道英文書院主編
地理科
(十五)
GEOGRAPHY (15)
Outline the geographical 140sure which are essential to the praction of plantation crops.
Plantation agriculture. is a large scale specialised agriculture) in the tropics where orops such as rubber and sugar are grown and proce gged for export to the temperate industrialised nations. Factors essential to the practice of plant- ation agriculture areI
Cheap, fertile land which 18 leveli well drained and with efficient w means of transport ports on major.. shipping routes e.g. Western coast of Malay. Peninsula.
Much capital me needed not only Tos the establishment of the plantation itself, but also for the import of foodstuff for the workers: though there are some exceptioné.
A huge labour supply is required since most of the work especially planting and harvesting is still being done by hand. South-East Asia is the most suitable place for the practice of plantation: agricul ture aince there is abundant aupply of labour from China and India,
UTSNSPORT YAGULLATACH REU DI grans s importance with export cropa especi ally with perishable products such as banana and mango, So most plant- ations are located near the coast.
Erricient management is usually sup plied by Europeans 9.g. medical doc- tora, pest control officers, noil experts.
A prolong perion of oULTIVATION may lead to soil exhaustion and erosion- Clean weeding may Jend to Jeaching: and Boil erosion.
a) Rapid spreading or peSUR, KAS KÅNE ses will affect the production.
Overproduction by some of the luau- ing countrais may lead to a slump in the world market e.g. rubber ano coffee often suffer from viclent fluctatione in world market price,
There are often poll71081 dangers to bring races with different cult- ural background together, *.g. rac- ial clashes in Western Kalaysia in 1969.
(28)532一元! (29721890元(30)80元
11: (本瀾逢星期一、三、五刊出)
11) Tin is the most important mineral'
mined in South-east Asia, with ref- erence to any country you know," describe the methods used in tin mining and on a sketch sap, pat down the areas where tin can be
obtained.
There are four major methods obtaining tin economically.
a) Drangingt- the alluvial deposit is sdooped out by chain of bucketa let down from a dredge. The tin ore in then sparated from the f water and the waste al luvium is thrown out.
gravel pumpings» in « BBK11 mine,
water is pumped in then the loose material which is alluvium and tin ore is carried by the water towards a pump where the water is sucked and the tinoze collected in a wooden structura,
a) Dulang washingı- za18 18 a pritisive
method usually döne by wonen. The gras vely containing ti ore; is mixed with water in a pan. It is shaken to remove the dirt and wast2materiale
4) Rydraullo mining:- Jet water
under
high pressure is forced out from pipes to strike" against the moune tain slopes to break up the gras vel. The water. carries the brow ken materials down to a largez box for separa tione
DISTRIBUTION OF TIN IN MALAYA
・TIN