育教僑華 頁三第張四第日二十月三年子甲曆夏
WAH KIU YAT PO
郭日僑華
四期星
B. 12 cm
b-16
in 初中成績評核預習
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3. Which of the following
numbers is corrected
1-4
present age.
A. 10 years old B. 12 years old
C. 13 years ol
sin 60
日二十月四年四八九一圈公年三十七國民華中 tan 60®+cos
sin cm is
·A. 27.
B. 49
C. 64.
125
E. 216
to 4. significant
figures?
數學
(五)
A. 0:457
MATHEMATICS (5)
1. Find the length of AC
6.96 cm
B. 11.51 cm
C. 12 cm
D. 13,6 cm
E. 16 cm
Area of the given isosceles triangle
2. 32 cm. Find the length of
B. 2,005
C. 13.047. D. 4240: E. 42000072
There is enough food to feed 200 girl guides for 12 days. If 40 more guides join the camp, how long will the food last?
A. 5 days K. 9 days
C. 10 days D. 15 days E. 20 days
5. Which of the following
is true? A
A. (a−2b)(a+2b)=
2
a-4ab-4b
2
(a−b) -a2+4ab+b2
A car has travelled 75 metres in 25 revolutions. Find the radius of the wheel of the car
2 cm
cm...
D. 14 years old E. 18 years old
B.
cm
12. If a=-2, find the
3 2 value of
A. 13 C. -8 .13
E. 14
16. Find the value of
·B. 11 D 5
em
9. There are 1200
students in a school. of which 55% are girls. The ratio of the number of boys to the total number of students is:
A. 11:20
E. 20:9
C. 11:9
-6ạb
C. (2a-b)(5a+5b)=
2
2
6a-5b-6ab
2
(Ja+b) -Ja +6ab+b
E. None of the above
Sólve for y. -Y-2-y
10. Simplify;
B. 20:11 D. 9:20
right angles
B. 3 right angles €74 right angles. D. 5 right angles
E. None of the above
A man saves $6 if he pays $44. for an article. It means that he can get a discount of
C 1000 E. 140°
B. 80°
1205
If sine:
then
WIN WIN
WINAT
A. 8/2 cm B. 53 cm
C. 45 cm D. 8 cm
1984
中學會考試題預習專欄
物
(廿九)
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BIOLOGY (29)
UM LEUNG!
MILL & DALE PRESS LTD. Unit 10: Revision Test 7. Nine seedlings were
grown on wine bottles as shown in the diagram-bakery St
bottles contain deficient culture
solutions, one
contains complete culture solution, and,
the remaining ne contains distilled”
water. The results were observed after several weeks.
Rubber
stopper!
·Cotton- wool
(1) Suggest,
•Seedling
A... C.
7. If b-3(-2)=10, then
the value of a
terms of bis
.B.
State an
importance of 41° nitrogen, (2) potassium and (5) magnesium on
normal growth of
The diagram he low
shows the anterior part of the human respiratory tract
Nose
Mouth
{ r
(1
Glass
bottle.
What OTAS
Esophagus
Trachea
the function
Why does the wall or R contaiuva rich supply of
blood capiliaries":
State two types of cells, lining the wal oftrachen.
What are the
importances of the ser cells?
(iv) What sense is the
roof of B
•Culture
solution
for, distilled
water
with
(vi)
reasons, LWO
corrections you
would make ta
improve the
experiment.
Why should newly- germinated seedlings be used instead of older plants"
responsible for? (1) State two
respiratory diseases which can be induced by cigarette smoking. (2) State a substance
in cigarette smoke.. which darkens, the lungs of smokers.
vii Bow is food.
(iii) What is the dis-
advantage of using one seedling in eatin set of water culture experimentsansver Name severn macro- elements which
Mela ne included
the complete
culture solubion, but excluded a ándividually in cach of the seven deficient cul solutions.
(v) What is the
eral
affect of a deficiency of a macro-element on the growth of seedlings” (vi) \hy is it necessary
to renew the culture solutions every two. vecke?
(vii) Describe an effect of a deficiency, af (1) "nitrogen, (2) potassium and (3). magnesiumi
on the growth of plants other than that. described in (v).
prevented from entering the trachea
1. The bottles should be covered with aluminium foil.
9. This keeps out light
prevents algal
Enovih virich miny
absorb some of the
minerals.
The Flass tube should be dipped
into the solution to vnsure an efficient
The
A man is three times as old as his son now. Six years ago, he was four times ag old as his son was. Find the son's
genes,
Nitrogen,
phosphorus,
sulphur,
potassium, calcium
magnesium
Krone
v) The growth is-
retarded.
(vi) Some of the materals may be depleted
(vii)
1-pale leaves
yellowing of leaf edge
yellowing of leaves
vital element for protein formation concerned in
enzymatic actions constituent of chlorophy11
Anasal käirs: 1, masal cavity Cepiglotti
DC-shaped cartilag
(ii) A filters out the
porticles "in air.
A. 105
15. Evaluate
∙12%
15%
The relationship between volume and. temperature is; Volume increases
linearly as tempera- ture increases,
(iii) To warm the inhaled (c) From the graph,
(iv) Smell (3)
(1) The ciliated cells
and the mucus secreting cells. (2) The mucus produced
by the mucus secreting cells traps bacteria and dust in the inhaled air, and the beating cilia the ciliated cells move fuery up the trachea to the pharynx, where they are swallowed
das phlegm.
(1) Bronchiris and Tung cancer
(2) (ar
物
Ccloses the
opening of trachea
during swallowing.
理
(廿九)
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PHYSICS (29)
x=70°C
The volume,
ficien
of expansi on-
At
-140-100. 100(100-DY
40 10000
-0.004)
The absolute zero temperature obtained in the experiment
18-2500
(Ams.)
(f) No, the expansion of
Lass is negligible. compared with the
expansion of the
enclosed gas.
Haguification
Image...
supply of oxygen for roof respiratio
distance
v. (in m)
MILI & DALE - ARES
0.5
0.5
0.4
1.0
Suggested solutions. 46
солт Revision Test
0.5
151
2.0
017
2.5
0.8
SECTION "R: FEAT,
LIGHT SOUND AND
0.9
YAVE MOT LÒN"
seedlings grow faster so that the Pesult is more apparent, while the older plants, may: have, ngre mineral reserves, which may affect the results,
Li There may be
variation, die
two
19. ABC and ACD are
right-angled triangles. If AB-4 cm, BC-3 cm, CD-12 cm, find the ratio of the areas of AACD to AABC.
0. 3 E. 5
20. If x:y-2;5, and
5x-3y=0, then the respective values y are
-4, -10
B-2, 15
C. 2, D-4
10
18. If the sun of the
edges of a cube is 36 cm, then the volume of the cube
Magnification
Answers:
1. E 6. B 11. E 16. D 2. C. 7. E 12. B 17. D 5. B 8. D.13. C 18. A 4. C 9. D 14. B 19. E 5. B 10. B 15. B. 20. A
inst· Image Distance
1 1 v0.2
w=0.6.
New Cartesian
n=-0.3.
f=0,2 m
Apply
Magnifica- tion (m)
0.2.
0.8 1.0
• Image distance (ism.) Heal-is-positive
Multiply both sides
m+1
Nex
Cartesian
Multiply both sides
1+m=_v_ ___ m=-v-1
the slope of the linear graph of against v is equal
to - slop of the
gra
0.3'm
G1
(Ans.)
As shown in the figure, since an inverted image 1 of the object is coinside with the object 0, therefore, the image formed by the Tens alone. 1) must
coinside with the centre of curvature Cof the convex mirror so that the rays from the object will incident normally on the
mirror and retrace
back.
Real-19-positive
u=0,3 m
f=0.2 m Apply
Therefore a real image is formed on the right side of the lens if there is no mirror.
The radius of curvature = PC =V-0.1 m -0.6m-0.1m
=0.5m.
(Ans.
The focal length of the mirror
=0.25m
(Ans.)
Since S, and So are equidistance from 0, therefore path difference Hence maximum intensity is received at 0. Constructive inter- ference occurs wher path difference =m, where m is an integer and is the wave- Tength. As lie walks to P, the path difference is equal to one wavelength andTM therefore next maxmium is received.
(11) S1 =√142
iii)
S&P
According to (i)
SP-S.P
=10-8.9444 =1.056 m (Ans.)
=(300)(1,056)
=316.8 s
the speed of sound in air is
516.8 ms-1
(b) Let X be the wave- length of the note emitted
483mm-151mm
=332mm -0.664m v
320 0.664
=482 Hz
(Ans.)
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