[did my best to tell ham and tie (15)(listen
attentively. Then he enrled and gently.
(16)(show) mc the way. He pointed ANAEST
But did not s
and sign and delt again understand it at all ki17)(hộ) politely (17)
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三期星日一十月一十年〇七九一展公年九十五國民華中 育敎僑藷
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1971 英文中學會考試題預習專欄:
新光出版社主編 SUNLIGHT
PRESS
LESSON THREE
CHAPTER TWO
物理科
PHYSICS
LESSON THREC
Answers to Exercises 1
(1) C
(2) D.
(3)
(6) S
(7) B
(8) T
(12) B
·(9) R (14) E
(5) (10) F
(15)
EXERCISE 2
(16) A thread of maximum, tension 20 gm-wf, and a solid
of 30 gm is suspended to 11 so that the solid is immersed in a liquid of S.C. 2. When the solid is slowly raised up through the liquid, it is found that when half of the volume of the solid is above liquid surface, the thread just breaks, the S.C.. of solid is
A.
15.
(17) The number of gms salt TS.6.-2.21 pres
solution of S.GV. 1.00
JOL
gm gm
The Right Use of Tenses (Continued).
THE PRESENT PERFECT CONTINUOUS TENSE
is used to express the duration of an action up to the present, It suggests that the act Jon
is tills continuing at the moment of s speaking
Ca 1 have been teaching this class for three
years (and are still teaching 17)
and
The children have been watching since five o'clock. (and are still watching now will probably go on watching for some time.) (11) THE PAST PERFECT CONTINUOUS. TENSE us used." a lo express the duration of an action up to
a certain time in the past.
Cat When I got into the class, the teacher
had already been teaching for fifteen minutes.
(11) The telephone had been ringing for two
minutes before it was answered:
b) To express the Present Perfect Continuous
Tense in Reported Speech, 1.e. Indirect Speech. (1)I asked him what he had been doing since
the arrived in Hong Kong (11) He told me that he had been studying
Chinese literature in Hong Kong..
12) THE FUTURE PERFECT CONTINUOUS TENSE is used
to express the duration of an action up to certain time in the future.
(1) On November 20th, 1908, we shall have.
been living in this house exactly twenty years.
711) In another week's time, John wilT
been working in Kam On Ca, for ten year
CHAPTER TWO
and began (18)(walk) in the direction ne (18)
Time "pussed and I noticed that, the pointed. houses (19)(get) fewer and fewer and the "(19) lovely fields((20)(appear) on both sides of (20) me (21)(discover) that I was totally lost, Suddenly
I saw a car (22)(come) and waved (21), my hands to stop it, hoping that the driver(22) would be kind enough to give me a lift to the nearest tram-stop. Out of my expectation the man was Thomas, my only friend in this
who drove me back to my hoteli foreign city,
EXERCISE 2
Put a tick()}) against the word or group of which best completes the meaning of each sentence The first one is done for you.
(A) known
(B) know.
As we all (1)
(C) Knowing.
(D) nad known (E) Know
far from the earth, So, even it
(A) were existen (B) exists
animals (2) 44 (C) existed
(D) have existed. (E) elist
(A) could not see
(B) can see 22
(3)
(C) cannot be seen.
(D) could see
(E) were seeing
the moon TS
Large plan
them the
powerful telescope. But without proof that wat present, and he life is possible without its
(5).
(A) assuming
(B) nad assuming
(C) must have assumed
(D) must assume
(E) have assumed.
A) were existing
(B) can exist
(C) are existing (D) existed (E)
sting
that nothing
on the moon.]
(18) A
spring has an unextended length of 25 cm, When weight of 50 gm is placed in scale pan
the spring, it's new length is 28,6 cm, when weight of 80 gm is placed in the scale pạn the length is 30.4 cm. By assuming. Hooke's Law, weight of the scale pant
B.
C.
D.
P
60
22 -
A) The Right Use of Tenses (Continued)
EXERCISE
Write out a suitable form of each of the verbs in brackets against the number given in the mar
one has been done for you as an example.
(1) did
"know"
- 1 (1)(not know), the city at all and what is more, I could not üfter a single. word of the language. After having (2) (spend) my first two days sight-seeing in the Central District of the city, I (3) (decide) to have my way lost deliberately on the following day, for I (4)(believe). that this (5)(be) the best way of (6)(get) (5) to be familiar with it. So I (7)(get)
(2)
(3)
(4)
(6)
on the first tram, that (8)(pass) and got off some forty minutes later in, what must (9)(be) unknown to me.
(7) 18):
(P) observing
(Q) observed
astronomer (6)(R) had observed
(5) observe
T) could obser
the earth through a telescope he.
(P) would see
(Q)
Sai
(7)(B), seeing
(S) had seen (T) was seeing
oceans, and he (8)
clouds and the.
(P) concluded (Q) concludes (R) had concluded (S) will conclude (1) would conclude
(P) suited (Q) is suited
(19) One dyne is the force required to
change the velocity of a given mass by! 1 cm/sec
change 1 gm of mass to move with, I^cm/se; cause 1 gm of mass to accelerate. by 981 cm/sec cause 1 gm of mass to change its velocity by I cm/sec in one second,
cm/sec
E. cause 1 gm of mass to move with Consider the 5 circumstances under which us reading of the weight of a body become
1. The body is weighed in a vacum
2. The body is weighed on the moon
3. The body is suspended by a string and thề
body is placed in a liquid in which the body floats
The body is suspended from a spring balanet
a lift which is moving down with acceleration due to gravity...
The body is so suspended as in (6) but
LS moving up with an acceleration equal
the acceleration due to gravity:
A. 1 and 2 only 0.3 and only
I spent a few hours pleasantly and eventually arrived at a restaurant where (10)(have) a cup of tea. Then 1 dcter-
After mined to get back to my hotel. (11){stroll) about aimlessly for half an hour, I decided to ask the way. But the trouble was that the only word 1 (12) (know) was the name of the hotel and even that I pronounced it very badly for no- body seemed to know where it (13)(sit- uated. Finally, I saw a policeman. He
(10)
earth (9)
(R) was suited
(5). will be suited
for
(F) suiting
amphibian life, But our astronomers see no signs of water on the moon and its atmosphere is colourless,
they conclude that'
(P) was
(Q) had been
(B) were
"""(5) 15 being
(T) S
this conclusion wi future by scientists.
less and lifeless desert Maybe turn to be false in the
B.
3 and 5 only
C.
1, 3 and 4 only.
and 4 only
(21) A stone is thrown with a velocity of 20 ft/sec
along the frozen surface of a pond comes to res in 100 ft. The coefficient of friction between stone, and, frozen surface:
cakes twice the time as B to reach ground. takes half the time as B to reach ground and B reach the ground simultaneously.
A strizes the ground with a velocity half as as that as B
A strikes the ground with a velocity twice that
as B.
Which of the following alternatives is true?
A1 and 5 only.
B. 2 and 4 only.
D. 3 and 4 only E3 only
forceps for picking up small objects
e first class lever system.
a
second class lever system
third class lever system
having its mechanical advantage smaller than
•having its mechanical advantage greater one...
Which of the following alternatives is true?
P
I
and 4 only.
Q
2 and 4 only.
3 and 5 only
R. 2 and 5 only
T. 3 and only
(22) A vody sliges udwn an inclined prane with angle.
A to the horizontal with uniform acceleration, this acceleration depends on:
the mass of the body angle 4
3. nature of surfaces of the body
acceleration due to gravity
4.
5.
the length of the plane
(23) A man standing on the edge of a
plane
fat some
height above the ground, throws a stone. A up with an initial speed u. and then throws another stone B down with the same initial speed, when the stones hit the ground with certain velocities repective the relation these velocities S.
As velocity is greater than B's
8. B's velocity is greater than A's
C. not known, since the height of cliff.
D. A's velocity is the same as B's
E. the difference in velocities is u¿
(24) 2 stones A and B of masses in ratio of 1:2 are
dropped from a cliff, at the same time
C. 3 and 5 only
(25) A body starts off with an initial velocity and
moves with uniform acceleration. It covers 10 fois. in the 4th second and 22 ft. in the 10th second, the distance covered in the 7th second is
24 ft. B.: 20 ft. 18 ft.
16 ft. 14 ft.
26) Which of the following statements refer to
centre of gravity of a lamina
It is a point lies vertically beneath the point of support when the lamina is hanging feely.
It is a point at which the resultant weight of the body acts.
It is the only point about which there is no resultant
tant moment when the body is in equilibrium. It is a point when employed as the point of suspension causes the lamina to be in equil brium.
It is a point which remains in the same positio if a hole is bored through the lamina with t centre of gravity as the centre of the hole. All of them ...? D. 1, 3 and 4 only
2, 3 and 4 only
2, 4 and 5 only,
E.
3 and 5 only
(28) A uniform plank weighing 40 lb and 8 ft rests on
two supports each I ft from the end. A boy finds! that the plank just tilts when he stands at end, the weight of the boy is
30. 1b
60 lb.
90 lb.
(-29
120.15.
150.15.
one
couple consists of 2 forces having the following. properties
equal in magnitude
parallel
same direction: opposite direction cting at the same point on a system
Which of the following alternatives is correct?
2 and 5
1, 2 and 3 only 1, 3 and 4"only"
and.
3 and 5 only
con
301The work done by pushing a block of
across rough 2 metre-bench (coefficient friction smaller than untry)
just half as more than Jess than
The work done by.
height df & metres.
the same as twice as
block of iron 2 kg