have been waiting e. has been waiting
7. I don't remember.
before.
REFERENCE LIBRARY
育教僑 頁三第張六第一日九十月三年丑癸歷
WAH KIU YAT: PO
報日情 1APR1973
六期星
日一廿月四年三七九一曆公年二十六國民華中
b. am waiting c. wait
Lay - Laz
1973英文中學會考試題預習專欄
1973英文中學會考試題預習專欄
you
b.
數學科
科 (廿六)
In AOAC
英文科
(廿六)
In A0CB
MATHEMATICS (26)
the taxi
(equal ares subtend equal
angles)
DA is the bisector of / BAC.
It is required to prove that
00 is the bisector of C.
Loko La + 291
(ext. L of A
La Lo2+ Loz
(base /s, isos▲
Solution
to exercise 25
But
(1) Produce AM to E
such that ME
AM.
(/ in same seq.)
ABCD is a parallelogram
(Diagonals bisect each other)
A
English (26)
Tense is a linguistic device.
It means the verb-form or forms
used to express certain time relat
-ions In order to master the English language, it is of vital importance to master the usage of tenses.
In general, tense can be divided into Present Past and Future. This week we shall 100k at the Present Tense.
1. Simple Present Tense is used:- For a habitual, permanent or repeated action.
..e. something which happens
or is done all the time e.g. I go to school e
everyday.
or
b. For a general statement
a proverb, where no particul- ar time is thought..
e.g. The sun comes up in the
east.
The
ma Harbour.
separates H.K. island
and Kowloon peninsula.
In clauses of Time or Condit- ion expressing
action.
2
future
e.g. Unless he comes tomorrow.
I shall miss him.
In exclamatory sentences. e.g. There goes my hat!
The Present Continuous Tense is used:-.
when an action is still continuing when it was spoken of, though it may not necess arily be so.
e.g. I am going to school now.
Have you been working
hard this week?
to express futurity. e.g. We are having our Arts
examination on Thursday.
The Present Perfect Tense indi- cates an action that took place in the Past but is associated with the Present idea of NOW.
I have studied all the not-
es.
The Present Perfect Continuous Tense is used to express the duration of an action up to the present.
.g. I have been teaching
English for two months.
Ex. T
1. I hope you
that movie.
a. enjoys
b. enjoy:
c. enjoying
d. would have enjoyed
e. would enjoy
The cause of the disaster last
June
a. are
b. has Cis
d. were
e. have
3. After
windows,
night.
a. to check
b. check
c. checked
not yet known.
a. meeting
to meet
С to be meeting
d. to having been met
e. to have met
8. That patrol car
along the highway was involved
in a chase.
a. followed
b. follow
c. following
d. had been following
e. had followed.
9. Ten miles.:
-ce to walk.
a. is.
b. are
c. are such
iso.
d. 19 he
10. It
not you..
a. is.
b. am
c. are d. was
were
11. What
long distan
for me to decide:
M
to-day? Stew
In ▲ ABE, AB
LE
BE
a. will you have b. do you have.
c. are you having d. would you have e. have you have,
a lot of Tom lately
aleee
b. are seeing
c. have seen
d. have been seeing
e. shall see.
13. Since they came, we
a,
to work on the project.
are
b. have been
able
Laz Lan
(2) Let G be the centroid of▲ABC
From AGBC
GB + GC BO
1.e. BE + SCP
Similarly, CF + AD,
Adding together
OC is the bisector of BCA.
0 is the in-centre of AABC
Example (Z)_____
ABCD is a minor arc of a circle
AB and DC meeļ such that AB BC.
when produced, at p, and DB is produced to meet the tangent AT at T. Prove that TP
Solution
ABAC
..Lai Láz
(angles standing on equal
chords are equal
TA.
AD+BE AB
>
have to be.
were being
had been
14. He
a bad cold, he
{(AD + BE + CF) > (AB + BC+ CA)
AD BE÷ CFA
(AB + BC + CA)
A
AT is a tangent
Ldz
(in alt.
segment).
sneezes and coughs all the time.
a. has
b. is having
c. has been having
d. will have
e. has had
ery morning,
for a
walk in the park.
B
a. will go
b. am going
c. go
d. have gone
e. will be going
6. They
for Japan to-night
a. will have left b. will have to go will be leaving were to leave leaving
a. thought
you must go wrong
b. was thinking
c. have been thinking
d. am thinking
e. think
18. He
morrow.
a. is seeing.
b. sees
c. will be seen
d. has seen
e. will have seen
all the doors and
19. I
went out into the
d. I had been checked
e. having checked
I saw someone
Principal to
something terrible,
am smelling b. will be smelling
o haveing..
smell
e. have
your bag
20. I
མ་
and take out the purse.
open
b. opens
c. opening
d. opened
e. to open.
5. You are wrong.
It ought
for sure that you are
b. knew
c. have known.
d. had known.
e. am knowing
Answers
(3) A ADC - AMBO
(Diagonal AC bisects the area
of parallelogram ABCD)
RQC = AYQU. AQX
AAQP
A ADO ARQC - AAQX AABC - AYQC - AAQP
area of XQRD area of PQYB.
Example (1)·
▲ ABC is inscribed in a circle as shown.” ̈ Dis the mid-point of minor arc BC. 0 is a point on DA such that DODO. Prove that 0 is the in-centre of ▲ ABC.
T,A,D,P are concyclic.
TPA = 202
Example (3)
(sides opp.)
angles)
A line cuts the sides AB, AC and BC produced of AB at P,Q and P: Two circles are drawn passing through A.R.Q and R,B,P respective -ly The tangents at A and B to the circles intersect at D. that CD touches the circles PQC. Proof: [ a = /b (/ in alt seq).
tically opposite
Prove
La = Le (L in alt. seq)
180
La-La
480
Lo
LADB
LOOP
B, are concyclic
La
LE
(s in same segment.)
But / d = Le
(proved )
CD touches circle P, Q,
just here.
a. to cut
to be cut
C..
to have cut
d. to be cutting.
b
11. c 12. d
13. b
4. a.
14. a
5.
15. C
e. to have been cut
6
16.0
7. a
17. e
6. For the past hour I
for
8.
9. a
you.
1. waited
10. a
18. a 19. a 20. a
Proof: Join 00.
Minor aro BD minor are DC
Exercise 26
(1) The diagonals of cyclic quad. ABCD cut each other at rt.. at P. Prove that the perpendi -cular from P to BC bisects, "when produced, AD.
(2) AOB, COD are two perpendicular diameters of a circle. Two
chords CP, CQ cut AB at H,K. Prove that H, K, concyclic.