奚二第張七第日八初月十年巳丁服萝
WAH KIU YAT PO
報日僑
五期星
fi 4 6 4 育教橋
HÆLARGE IK HET A*F
a mixture of
B
C汽車
D'ut
AA
E墨水筆
BA
ammonium sulphate
and
calcium hydroxide
copper(II)oxide
DBF
牙齒尖尖,只叱默海料:吃時嘁嘁峙、肚子 HABITS, AR ---
學能推理練習專欄
ZA PEMU
巋收音锲
drying heat
agent
D$7
EAT
heat
DA
ZA
(3)C
(6)B
(7)E
C
(S)E СФА
liquid
WM IN
數字推理棟習十八
綜合練習
彍出下列布題的正確答案,並在它的下面畫
1.下列各欺中,那一個最接近0?
B1-% C
1 1000
D0.0001 E,1
下列各分数中,那一個是0.25年0.125的中
間躲?
Ci×25+0.25
D.9
個不合理?
E 49
B 60% 50%; — ·
D0.5+1-0.5—
X+Y-52,
邝一項是對的?
AX=52
C7=X
BXY -57. DZ
EY=52.XX÷
在下图中,诚空的圖形禸應有多少粒票點
A 15
.B.12.
C
D 8
1978
「中學會考試題預習專欄
i) + ± detrá
經濟與公共事務(七)
孔繁盛·
Economic and Public Affairs(7)
Demand:
The demand for a commodity by an individual is called individual demand. The total. sum of demand for the commo- dity by all individuals in
the market concerned is call. ed market demand.
Demand is always expressed
as a schedule, demand schedule
ere is an example of a demand
schedule.
Price
Demand for milk
Week of Nov, 14-20, 1977 Quantity demanded
(quarts)
(Per quart)
8.45
11,000
40
12,000:
.35
13,000-
下面的數刻中,遮去日
30
14,000
16, 6, 24 8. 32.
36.
.25
15,000
A B 9 →→ C 12
D 16
E 18
.20
16,000
15:
17,000
小强做放72题,做赔了12题。若要知道他做 踏的数是做對的數的幾分之疑,應用下列舴
A 12+72
B (72-12)+72
€ 12+ (72;÷12
D 12÷ ( ?2-12)
E 72-412-12
下列各圆形中。 一個的面積最小線
若把下列甲、乙、丙三组来造句,每句均须 RETURE
少句不同的句子)
A 3G
·B 4 by
C: 6:03
昨天
D9
E120
姊姊
D
(3)C
4E
ᎦᏟ
9.D
10E
文字推理練習十八
᛬綜合練習六
選出下列每聯最過當的答案,蘊在它的下 糖練、
E五組中選出數過當的答案
B()金幣(2)古:
COPEN
(2:礦物
(2125.00
經的對()正如沸想對
A
B
c
DO E+TÆ
(2)纱水
(2) £
42114 (2)排水
(2)- 1
(2) F}+\
121
A (1) BAL B'(1)器量
Cir焼酎
D(1) 長者 (2) Ik✰ E111灠练 (2) LIA
(2) A
AЯ
(2) I
BOTA
CHIAЯ
D(1) 花巻
EDAM
(2)初
(2) ALA
12107
S. WIEN (1) JEN 121
A飲料
B)牛奶
12)
121 14:
(2)
D!])办法(2)亞米稻
E(1). 20. น.ต
就從下列各题有編號的句子中,選出兩句
JESSIE PRE DOG DEJA RÁÐ STAND
6 BALAS TOW he dy v
F12!在任何國家,吸食者品都是犯法的
搬讚喊饿的人强說吸烟是人生的離地, 吸常澹品是「竊君不了生命中的唯一幟试 結論:吸食毒品使人失去了人生的獬她
AQ)+(3)
B(4)
D124(4) E34
7.11)欺辙牌相機的體積很小,
C(2)u(31
12)歐樂牌相機的製造顺是一間小工廠
(3)只有性能良好及廢價的相機才會暢動
141眦樂牌相機很暢鹬、
玆論..歡軀牌相樾價廉物其"
A11)4(21
D12112
B(1)(3)
--E(3)14)
KTS_X-RIDE IN - DESTALS BAN SUVI KAN HAN AN SA 贊的答案。
Every demand schedule is assumed for some period of time. The demand schedule the above table shows the relationship between price and quantity demanded of a commodity. The bigher the price of the commodity, the less quantites demanded for
the commodity will be. So we can see that the quantity desanded for a commodity by an individual or the whole market is inversely proport- ioual to the price of that commodity.
To summarize, there is
Law of Demand stating that." at a lower price level, the quantity demanded of the commodity will increase, and vice versa. A change in its quantity demanded means that the price of the commodity has changed and as a result the amount. buyers wish to purchase has also
changed.
The demand
he plottede can
with.
X axis for the quantity den- anded for the commodity, and Y axis for the price of the commodity. The curve is known as demand curve.
Price
Demand Curve
-2000*
The demand curve slopes: downward from left to right, reflecting the Law of Demand. A movement along the demand curve means that as price of the commodity changes, the quantity demanded of it will change correspondingly, In other words, other things. being unchanged, price is the only factor that makes the quantity demanded of
a commodity change. For
example as price decreases.
from $45 to 6.40, the
qunatity demanded of it will increase. from 11,000, to. 12,000.
化學(七)
Chemistry (7)
Question 10
朱宏林
In the experiment as shown below, the gas G produced was passed
over heated copper(II)oxide in a combustion tube.
(a) Name the substances, G, L and
(b) Give the equation for the
formation of gas G.
(c) Suggest a suitable drying
agent for gas G.
(d) What would be obtained in the combustion tube? Give the equation for its formation.
(e) If 1.32 & of ammonium sulphate
were heated with an excess of calcium hydroxide and all the. reactions were supposed to be complete, then
(1) what would be the volume
of gas G produced; (ii) what would be the volume)
of gas X obtained?. (all volumes were measured at
s.t.p.)
(f) When a brightly-burning mag-
nesium is placed in a gas-jar of gas X, a greyish-white solid is obtained. What is.. the solid? Give an equation for the reaction, (g) It is found that when the
solid obtained in (£) is
added to some water, a gas identical to gas G is obtain- ed. Give an equation for the reaction.
Question 11
3.1l g of lead(II)nitrate are: dissolved in 100 cm of water, 50 cm of a
solution of 0.25- potassium carbonate are then. added to the lead(II)nitrate solution and the precipitate formed is filtered, carefully washed and dried.⠀⠀⠀
(a) Give the equation for the
formation of the precipitate, (b) Find the weight of the pre-
cipitate obtained, if the precipitation is complete. (c) What is the volume of 0.5M
nitric acid which would be required to to react with the excess potassium carbo ate in the filtrate?
Question 12
(a) The system represented by the
following reaction is at equilibrium at the temperature T and the pressure P. 250 (8)+0(E)250,(8),
AH= -x kJ
State the effect on the yield. of sulphur trioxide when
·(1). the temperature is
raised; (ii) the pressure is lowered; (iii) a suitable catalyst is
added to the system; (iv) more oxygen is added to
the system,
Explain briefly your answer in each of the above cases.
(b) Describe what would you obser-
ve in each of the following experiments and explain your observations briefly, giving ionic equations where appro- priate:-
(1) Chlorine gas is passed into aqueous potassium iodide solution to which some starch solution has been added.
(ii) Aquecus sodium hydroxide
solution is added drop- wise to an aqueous solu tion of zinc sulphate until an excess of sodium hydroxide has been added.
(c) A colourless liquid, P, with
a molecular formula of C24 2 gives the following reactions: (1) When magnesium le added
to a dilute aqueous sol- ution of F, a colourless gas is given off which burns with a 'pop sound. (ii) It rives white fumes with
phosphorus(V)chloride."
Deduce what P is and give its structural formula.
Explain the observations giv- ing equations.
物理(七)
PHYSICS (7)
魯榮家
Exercise 4: Mechanics
日八十月一十年七七九一年六十六國民载中 育教笨
water on G in figure 3 to the upthrust exerted by
(Specially selected
Certificato 2
1. In
are
problems)
1, X and Y
Springs each of 50cm Long when unstret- ched. If a load of mass
1 kg is added to X alone, its length changes from 50 cm to 60 cm. If the load of mass 1 kg is add- ed to Y alone, its length changed from 50 cm to
cm.
▲ non- uniform piece
of metal PR, 35 cm Long is then attached to the two springs as shown in the diagram. If each spr- ing is now 55cm long, find (1) the tension in each
spring, in newtons (11) the weight of PQ,
in newtons,- (111) the distance of the
centre of gravity of PQ from P. (1973)
-35cm
Figure 1.
2. A smooth hollow box, partially filled with sand, has an opening in the front and a total mass of 10 kg. The box and contents are sliding without friction across a smooth horizontal surface with a velocity of 1 ms as shown in figure 2.A sphere of mass 2 kg is pro- jected towards the box with a horizontal velocity of
1 8 ms
in such a way that it passes through opening and becomes embedded in the sand on impact. (1) Calculate the magnit-
ude and direction of the velocity of the box
after the impact.
(11) Calculate the energy
lost during the impact, (111) In what forms will
the lost energy be dissipated?
(1974)
Mass 29 O
Figure 2.
3. A spring of negligible weight and volume has an unstretched length of 0.2m One end of this spring is
attached to bottom of a tank, and the other end is, attached to a cube. Water. is poured into the tank until C is half covered. Spring is then 0.23 m long (see figure 3)
Figure 3
Figure 4
When more water is poured in, and is completely covered the spring becomes 0.33 m long (see figure 4) (1) Find the ratio of the upthrust exerted by the
the water on C in figure 4. (11) Find the ratio of the tension in the spring in figure 3 to the tension in the spring in figure 4. (111) What is the relative. density of C? (1975)
4. A conical flask having bare area 0.01 m2
and negligible weight contains 6 x 103
of oil of rela- tive density 0.75. A wooden
cylinder of uniform CROS. section and weighing 0.1 floats vertically in the oil. The flask with its contents is then placed on
the horizontal pan of a compression balance as shown in figure 5.
Wooden
Figure 5.
(a) Find the total weight
of oil in the flask, given that the density of water
-3 is 102 kg m (b) Find the reading of the
compression balance in
newtons.
(c) Find the total thrust
exerted by the oil on the bottom of the flask. (a) What is the direction of the resultant thrust on the side of the flask? (e) Find the magnitude of
the resultant thrust in
(a).
(f) Find the relaood.
density of the
the
(5) Would the value of t total thrust in (c) be different if wooden cylin- der floated horizontally instead of vertically Explain briefly.
(take g (1976)
= 10 ms-2)
5a)Smoke particles suspend- ed in air can seen to be
in constant, irregular motion when viewed under
a microscope.
(1) "hat can you say about
the nature of air from this observation ? (11) «hat is the effect of
a rise in temperature on the motion of the smoke particles? Explain brief- ly.
(b) 1 cm3 of oleic acid is
dissolved in methanol to form 1000 cm3 of solution. 0.03 cm3 of this solution
см
is pipetted onto the suÏ'...... face of water. The dia-
aeter of the patch of oleic acid formed is 20cm. (1) Calculate the approx......... inatel length of an oleic acid molecule from the above data. (Take to be
3)
(11) That assumptions have you made in your calculat- ions
(1977)
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