1970-04-29 — Page 15

育教僑華

第三張空第日四廿月三年戌庚宴

WAH KIU, YAT PO

報日僑

中文中學 會考試題預習專欄

英文科

(廿六)

王淑方。

choose the

TEST TWO:

LESSON TWENTY-SIX

SECTION FIVE

TEST PAPERS

(ENGLISH PAPER II, continuedy

For each of the following sentences.

Best of the alternatives given,

(6)Everyone has.

(P) 1s

(R)his

(T) everyone!

2 the

The bird pecked at the seeds with

beak-

(P)

(R) It's

(8) ^ Neither of my parents:

(P) was born

3

cwas borned

(T)

corned

-He was. în need,

8

to

(T) of

10) I strongly disapprove.

behaviour,

:0:

large.

Q its

(S)

ita

山

this country,

were bornsg

has beer.

born.

nelp.

off...

his rude

with

之重腿性。 當之部跑,及阴陀拍唯一報,以加强學生對此之 |大琳图院內標貼有福滋

:由於本淅血限的血

!!

一覺,因此香港專上學生 介及演講。 一般人對捐血均存有大專學院畢將有關電影

|貯存花鋏上各中及一

「聯會及香湖大恩醫科

| 你週」之內守如下 此「捐血運齗 行各項比樂的照鹕能式

「參加中文中學會考自修生 涑領取准考證件

. 如未收到通知書,亦可前往領取

隈際人士踴絕參加,及」 (六)此次强 予以支持,佻洲獅郎一於五月十三日閉幕,同 醫學識,希望社會各册子及介绍文章。..... 「俊龍,尤其對朗界方面以摄高各界人士興趣, 射些無社會服務加以一比賽及海衆設計比賽, 會欲的此次汪動,令市捐血激動用泡的機交 (五乚派有關小

近寄出通知乎上所列明之日期及辦法,輒取准考

取上列文件

:

港三,昨生

月如

,任何引修生如在五月五日星期二仍未前往

Will

you look

shopping.

(A) in

(E)

12】 He

w

to after

the baby while I no my

over

incapable up the work properly.

unable

table:

He is going to Singapore.

(A) onto

(C).at

(E) for

(14) That room contains too.

(A) many

(C) Bore

(E): pleat

iasapie impossible

turnat

much

numerous

E

pusiness

I

(15) I know you can keep a secret.

wouldn't have told you this,

otherwise

(C) and

116) I will come to see you tomorrow.

im: kept late at the office.

(P) FH11

(R) unless

otherwise

(17) They worked hard

in time.

as to

because of

(T) in order that

(18) The mountain was.

not climb it.

(P)

thar

(R) too!

·auch

(19) He took a

(Q) until

despite

they might finish

(S). in case or

steep that they could

三期星1日九廿月四年〇七九一曆公 年九十五國民華中

K

副會長:健榮光、沃。

港大醫學會聯辦 專上學生聯會及...

九 捐血運動宣傳週

並舉行血液展覽

·直運點饉傳週」,將於各界人士觀 醫學會聯合事辦之一推日在大路銀行,嬴河 五、营褶大麼將於五月九日第十一 五月九日開始歡迎各界參觀 X-

10英文中學會考試題預習專欄

堅道英文書院主編

日

-path to defend his countryi

straight Large.

strong rolemay

severe

(20) He was,

a Loud

waken awake Twoke

(S) waken

(21) Such.

man of hie

pehaviour was surprising in

àge.

(A) shildish

(C) hildlike

:

(E) child's-

́22) The twin brothers

(B) chig

(D): childi sid

(A) liked.

(C) alike

(E) liking.

(23) They left the town. many years

like

(D)likel

(A) than

brevious

(C) since

(E) then

(24) He

(A). (C) break:

described

(25) No one saw him

break (E) to break

to them whoat stams no

collecting.

proke

(B)

breaks (D) broker

into tue nouse.

breaks

aroker

物理科

(十六)

PHYSICS (26)

O O O 00

Salution

年

|聋生祀恋发行第四十 年演出,汝大會審批

會,於昨日在媲仁中學 三屆會員大會,會上由

張永賢蟬聯會長 皇仁舊生會選舉

其他部份新廑同時選出一

。嬴務秘出:李兆陵 -義務秘書:對點

至七一年度致毁R4, 准,隨龍行一九七〇心美秭可破:銀

創伲灏川强求铬爲其茶,海產、陈邦

DPA

From the

IT 18 seen, thet

* SUU ca

•*•* (1)

ra u is the candão (

distance from the mirror,

v is the distance wall from the airraz

Loo Tram the expreDSLÅE

Object distance, u Focal length,"

30.c

20 cm

(positive for convex

lans)

1/4

the image distance is calculated asi

1/20 1/201/30 1/60 60

The image is real and is formed 60 cm. from the lens on the side opposite the bbjectr

Sølving (1) and

150

2/2

there u is the object distance

vis the image dietance fis the facal length, and Ria the radius of curvature +1/150 - 2/R

4/450 - 2/B

R

225

25-3

Object distance, u

1/v + 1/15 × 1/20

1/20-1/15

1/60

The image is virtual and is formed, 60 cm, from'the lens on the agme gide as the object..

Ansvari The mirrer must be placed 450 on fram

the wall and must have a radius of curvature of 225 cm.

Soluti en

second image.

Object

TAG Tirav reflection is carried out at the denvex mirror:

The object CLUTMAGE

2

The focal length of this mirrer is -10 equation, its image distance las 1/9q + 1/20

1/10 3/20

Viagram A" shows the paths of rays diverging from the object O and converging, after reflection and refraction, to the game point.

Diagram B shows the familiar real and apparent thickness diagram, B being the lange of 1, Th distance. QD in equal to AB which is the differ- ence, between real and apparent thicknesses».

一起

5(1 - 1/1.5)

- (5 x 0.5)/1.5

and since. OCDQ is a perallelog

OC - QD

OC

but C is the centre of curvature since the rays at I and I retrace, their incident paths after reflec- tion and must therefore be normal to the mirror, i.e. must travel along radii of ourrature.

erefore, the distance of O fram the mirrer is 40+ 90, which is 41 and 2/3 cm.

25–5: Solution

From the general expression for a number of different medias

do đi từ A

time is, therefor

a virtual image

and is six and two-thirde ca. behind the convex mirror.

For the au reliaction, (Walon 18 at the concave sirror) the first image constitutes the objects

second object distance

(40 号)。

radius of curvature of the concave mirror.

Answeri

20 cm.

1/463

= 1/10

1/10 - 3/340 14.

140

The second image is real and 18 rozmed at distance of 12 and 8/11 on. in frest of the concave mirror.

1.60

*1.20

and aince

ain

Answer:

( being the critical angle

1.2~0.833

56 24

The critical angle for water-glass 18. 56°24

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