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育教僑華頁三第張六第 日六廿月一十年辛歷夏 WAH KIU YAT PO
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三期星日二十月一年二七九一公年一十六闔民華中
郎起接受報名:
·先實務」課程 三月六日開標 主持中大校外部「香港證供投
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•AYEUHREKEKEMERLER RACIN 期,為證类投产界部片芯賞易恩有梁實作養之前激人 HNIEKERKKIEN RIFACIME REENBER 英語本华
及
毓富兹兆均近照)
BERGINEN(K)KKI E HERSKREI659+2-1+1E D
1912英文中學會考試題預習專欄
1972中學入學試
欧電弧智旅
"Why are you late, Maggie ?" Miss Tan
asked.
Miss Wan asked Maggie why are you
late.
B. King Wan asked Maggie why wer
late.
you
物理科
蒸紅利
(+-)
C. Hiss Wan asked Maggie why she is
lata.
5.6.1
There's a hol your trousoza. Toa
Where? cap” € WAR it."
Look in the mirror, Now can you see it?
"Oh dear? Itla a 134 опе. Please ESEI it, other.
"Are you feeling better, David?” Dr. Lee, akad zy
brother.
Yes, thank you, replied DavİL. 'How's the pain in your stomach?"
the doctor esked.
It's gone поя!" David
'That's good," said
the doctor.
'I'11 dome and ave you again, tom
SECTION
multiple choice,
Choose the correct answer."
„line across the right box:
D. Miss Wan asked Maggie why she was
lata,
E. Miss Wan asked Maggie why she
Late
Who saw the robber? asked the poince.
The police asked who sees the robbe The pollon asked who had seen the
robboz
The police asked who has seen the
robber.
The police asked who would seo
the robber.
The police asked who da sesing
the robber:
B C D E
1000
The chest zaid to the caller.
hold the line.":
A. The clerk ordered the caller to
hold the lins.
B. The clerk requested the caller to
hold the lins.
The clerk bogged the caller to
hold the line.
The olerk ordered the caller
please to hold the line.
The clerk requested the caller
please to hold the line.
ABC DE
SECTION_00
Change the following sentences from Direct Speech to Indirect Speech. Example: Mr. Ho said, "I went
fishing yesterday"
Hr. Ho said that he had gone
fishing the day before.
We must finish our work before dinner.
Faid the two brothers.
The two brothers said
Tom said to me, "I have not sean Stell
since last month
DFAT
Tón told me
"May I go out,
teacher.
Jim said to
Sxamples Mary said. "I am happy A. Mary said that she was capp B. Mary said that no was happy C. Hary said that I was, haspy. D. Mary said that she dy happy.
B. Mary said that they were happy
包□□
David sada, "I don't be.
A. David asid that I déné lor
1 David said that he doesn't EK,
0. David said that he didn't know. D. David said that che dobon mon 3. David said that I didn't know.
B C D
00000
2. other said to Lily, "Will you gó
shopping for me? **
other autod Lily if you will 6 shopping for me.
Bother asked Lily if you will go
shopping for her.
Mother naked Lily if she will co
chopping for her.
Mother asked Lily if she would g
shopping for bes
E. Nother asked Lily If sho would ge
shopping for mo
Σ C DE
00000
Jim asked
Susan said, "Please forgive me, no the
Teng said, "What a fine
Hr. Tans exclaimu
ITT. Change the following from Indirect
Speech to Direct Epssch.
Example:
La said
So Fun all that she felt.
cicke
Fun said, "I feel aid,
at kas vila fis intorsstind
other told. qužckily.
uns onalaren skad
been to Wages,
sae onalaren dadd
Physics
(+-)
(a) The specific heat or a sub- stance 18 defined as the ratio of the quantity of heat required to raise the temperature of any mass of the substance through one degree t to the quantity of heat required to raise perature of an equal
water through one de ten
The specific heat of a solic can be found by the method of mixtures. The principle of the method 19 to heat the solid in a beaker containing water until its temperature is steady. It is then removed by means of a thread attached to it for the purpose, and dropped quickly into a thermally lagged copper calorimeter filled about two- thirds full of water. The lat- Ler is stirred, and its final temperature is noted. Knowing the masses of the water, the calorimeter, and the solid; the initial temperatures of the solid and water, the final tem- berature of the solid, and the specific heat of the copper calorimeter, the specific heat of the solid can be calculated
y applying the "heat lost = eat gained equation to the rest transfer which takes place.
When the experiment is car- ried out as described there are several sources of error. The
hier of these are
Loss of heat by the Calor- meter through radiation, con duction and
6) Loss of ha Onvection
by the hot solid while it is being transferred from the hot water to the cal orimeter.
Transference of not water by. the solid into the calorimete. (4) Heat absorbed by the thermo
meter itself.
Let the Iina temp. be XC Water equivalent of calorimeter:
ate mass) x (specific heat.
of copper) 50 x 0.17
Hence une calorimeter and the 100 gm of water in it will have a total water equly- alent of 105 gm
Heet absorbed by calori meter and water (total water equivalent) fall in temp.
20 ) cal.
105
X
Heat given out by steam
Theat in condensing
in cooling.)
(heat
5 x 540 5(100
X }
Heat Fost to the surrounding
69 cal
But..
Heat absorbed
heat lost
calorimeter.
said mother.
105x
21:00. 60
tby aa nevez
heat given out by steam.
201 60 5 x 540+
5(100
2700+ 500.
5x
5240 47.64
her asked Habel what time it was
?" father asked Kabel,
in told me that he had met Mary the weak before.
Tin said to me
he water rises to 47.6°0
(18)(a) The latent heat of fusion of
a substance is the quantity of heat required to change unit mass of the solid substance: from the solid state to the
1quid state, the temperature remaining constant:
The
latent
heat of evapor
ation of a substance is the quantity of heat required is
change unit mass of the liquia substance from the liquid stats to the vapour state, without change of temperature..
Let x gm. of water in the wei steam
Water equivalent of the calor imeter 218.5 x 0.1 mm.
21.85
Lotal water equivalent of cal orimeter and
and water
(350 +21.85)gm.
371.85gm.
Hest absorbed by calorimeter and water?
371.85 x (239) CAL. 371.85 x 14 cal.
Mass of wet steam
-579- (350218.5) gm. - 10.5 gm.
Mass of
x)gm
of steam = (10.5. Heat given out by steam in condensation
= (10.5 - x) x 540 cal
Heat given out by water inj cooling
10.5 x (100 - 23)
10.5 x 77 cal.
Assuming no heat is lost to the surrounding,
Heat absorbed Total hest, given out by wet steam 371.85 x 14 = (10.5 - x) :
solving,
Percentage of steam
540 + 10.5 x 71
355
later in wet
10.5
22.43%
100%
The percentage of water in we steam 22.4%
(19)(a) Explain what ta meánc
by the mechanical equivalent of hear
(b) A cardboard tube 217 cm; long and closed at both ends contains a quantity of lead shot et: 12.500. It is rapid inverted, 100 times and the temperature of the shot is then found to be 28.85 0. What value does this give for the mechanical equivalent of heat.
(20):
thermometer
voltmeter
Armetez
In the figure an electric heater is shown whose purpose les to provide a coninuous supply of hot water..
Two experiments are performed on it. In the first case the vol- tmeter reads 2.01 volts and the ammeter 7.81 amp. 501.2 gm. of.. water pass through in 22 minutes, and the difference in temperature between the thermometers 18 9.3700 In the second case, the voltmeter. reads 2.21 velte and the ammeter 8.52 amp. the water flow is adj- usted to give the same temperature difference and 607 gm. pass throu gh in the same time as before: Calculate
(a) the quantity of heat lost per
manute to the surroundings. (b) the mechanical equivalent of
heat