1971-02-25 — Page 15

GRARY

C4

-<) (a−b) ・・・ ((-a)(b−c)

· Q4 {b-c) + b2 ((-a)+("(a-6)

(a−b)(b−c)(c-a).

2 (bài bạc aced al

(1)Y 3 (3 −3 ) + 3 x ( 3-x)+xy (x−8) 1310035 a-b, ŏ-cc-a

為分子的因式,由此得

報日僑畢

B FU

B-*3=BY WAH KIU YAT PO

四期星 日五廿月二年一七九一曆公年十六國民華中 眘教僑華

1971 中學入學試試題預習專欄

Leep slept

00

quietly.

中文中學會考試題預習專欄

智慧出版社主編

(91) R£= − (a+b)(Ca)

has got

Q. had got

數學科(八) 張正邦

Joe R. geta

his ticket before he went

英文科

(十八)

S.. got

T. mill get.

ANSWERS TO PREVIOUS EXERCISES

第十七次預習題解答 析下列諸式的因式,

to the cinema.

Dick played with his friends after

SECTION

2.D

4.D 5.C

P. had done

Q has done

9. P

10.C

000

does

His work.

ほーるーメ皆為比較的因 式,故設

SECTION

BID

purple

20 turn

will do

00

when

5. foeda

III. 1. How 2. Where

5. HOW

SECTION

the sun R. #11

They got to the Peak early and notched

P. 13 rising.. was rising.

rise.

rises. Trise

000

00

(multiple choice)

noose the best answer by arazin

the right box,

Example: If Tom's parents sent him to

Qlives

with live

ure line across

P. live

B C

R. lived

A. shall be..

000

B. should be

am living

D. would be

90

E, can be

too glad.

study abroad, he C. will be

A. rains

B. is raining

usually C. has rained.

D. bad rained

E. will rain

A

listened

000

SECTION

000

house

10:

Change the following sentences Late questions. Je

Example There s

fish in the bowl

Is there a fish in the boil?

A. B.C

an, summer.

மர்

Ers. Chung has to

B. Listen

2. Keep quiets We C. were listening to the

B. are listening

shall listen

A, picked

music.

B. pick

Don't let anyone C, picks the owers!

D. will pick

E has picked

Before the policemen came the robbers

escape...

escaped.

C. are escaping.

D; have escaped.

5. had escaped

do not see

B. will not see

The two friends C. have not seen-

D. had not seen

E are not seeing

for a long time.

B. C

pann every dayu

lay with him

2. Jim wanted someone, to

3. She ought to work harder.

Pong never snckes.

DE

00

They

ent a

day in Lantį

A B C

00

A B C

000

DE

00

R

IT). The roowing conversation needs punë tue tɔ on.

Fut in capital letters and trie mark's

ave you seen Jack asked david

cessary. une fuati ori

yes ive just seen him at the anems he wanted to meet me at sever oclock

Its already twenty past hes forgotten

a^(b−c)+b2(C-a)+("(a−b)

(a−b) (bc)(c_a) [k(Q_^~+b2+ c2) +ecab+ bc+ca)].

4 3 (4-3) + 3X(Z÷×) + XY(x-4) BX a-o bu

= k(X−4)(4−}){} −X)--(1)

ak X=0, 1=1; 7-21AU

~^1}. 2(-1)+0+0=k(-1)F-1) (2)

*2 Yz (y-3)+3x(J−x)+xy(x~y:

· (2) x (y-3) + y () - x)+3(x-4)3 ##} } x=y y=8 }=x @3.

EL EI AO BYU-Y)(4-3):

(子)能除靈此函數又因 此函數為輪換對稱及發

得

-14=10k+

26 0=0, 6-1, (=3

23 -13=10k+ 30. [0) (2) Mi 43. -

k=-1 l=-1. $$ Q^(6-c)+6" ((-a) + ("(Q-6)

-(a−b) (b−c) (C-a) (a=+b2 +c+ab+bc+ca),

#

~(Q-b)(b−c)(C~a)Q+b+c+a6tbetes

(a+b)(b-cx(-a)

#NBA**=*= x^3 = a2+b2+c2+ab+bc + ca

X(Y-8) + "(8 - x)+7(x-5)2. = k(x-4)(8-8)(8÷x) (x + y + z)

xx x=0, y=1, z=2^^£3

· 04 2+2(-1)

= k(-1)(−1)(2)(0+1+2)

3X X(4-8)2+Y(8—X) + 3(x-4)

(x-4)(y-3)(8~x) (x+x+3)

· (3) x4(y2-3?)+y" (12x2)-+}" (x2u?) (m2) @ x=±y = y=+8 D

=±X時此函數為口,故

(x+4)(x=Y)(y+D)(1=3)(1+X) (3-X) ME PALL˃ 由此得

x^(y2-j2)+Y*(3-x2)+z" (x2 63)

= k(x+y) {x+y)[~ +8)(y-3)(3+x)(3−x)

3£ X=0 Y=1, z=2\

(E) 11, 12 (a-6)(a-c)(x− a)

+(b−c)(b-a)(x~b) * ((-a)(c+b)(X-9 (4)

(a-b)(c-_a)(x-4) (b−c){a-b)(x-b) (-a)(b-c)(8-9)

_!_a`(b−c)(x−6)(X-C) -b2(6-4)|| (X-a)(x−c)~c^(a−b) (x− a)(x-6)

(Q-b)[b−()(C=a](x_a} (X=b) (X=C)

-a^(b−c)(x−b}(x−c) − b (c-4} (X~a)(x~c)~c2(a=b)(X~a)(X-b) HELA (a−b)(b=c)((-a)MI, **1

- Q2(b−c)(x−b)(x−c)-b((-a) (x=a)(x−c) = (2 (Q-b) (X~ α) (x-6)= k(Q-b)(b−c)(c-a)

40+(4)+16(1)=k(1)(-1)(3) ER Q=0, 6=1, (=24}

(-1)(2)(2),

· 5x x 4 (y = z 2)+y4[z2x2)

+3=(x2y2)=-(x+3)(x-4)

(4+3)(4−3)(3+x)(3−×)

3=-X 11 & Bo

(X+4)(Y+b) (8 + X) at ZON 13 (X+4+8) - X=-q=r

= k(x+y)(Y+z]{} +X}

1-2 0=R 3=X 48

17 (2+0+1) −2-0

-k(2)(1)(3)

k=3.

tx (X+Y+Z)2 = x2 y = gs

3 (X + Y)(Y+Z) (3+X)

泰式二

k = x2

(X~a)(x−b)(x-3

第十八次預習題

U HAR EM 14 X2+ --20X+6可用X-3整除,

(2)株式定理定lm

152x_x2 + ex+ m

(X+2)(X−4) † 1

3) キえて三次整

敦メニュ

3時,函數之值為0當x=0

P&#21106, ☀ x= -1 °f 函數之值為12:

化下列各題為簡單分填分式:

t

x2+2x+3

(X=1)(X-2) (X-3)

15)

6¢

··(b−c)(b-a)

(6)

+x+3

P. sleeps

Q. sleeping

aman made the baby R. will sleep.

000

1971 英文中學會考試題預習專欄

新光出版社主編 SUNLIGHT PRESS"

化墨科

(TO)

CHEMISTRY

LESSON EIGHTEEN

24-2-1971

ANSWERS. TO EXERCISE 16

(162)

161) D 166) Q (167)

EXERCISE 17

(164) A (165) E

(169) T (170) - T

(171) Con-sulphuric acid can remove water or elements of

water from many compounds. These reactions are called

reactions and the acid is therefore a

A element

agent

B.

dehydrating action

D. hydrating agent

E. hydrating action

cannot be used?

(172) Chlorine can be prepared by

A. Using potassium permanganate

(177

B. Using bleaching powder

Which of the above are pro erties of chlorina?

(a), (b) and (c) only

(a), (b) and (d) only (a), (b) and (e) only

D. (a), (c) and (d) only

All of them.

The bleaching action of chlorin

B.

hypochlorous acid

hydrochloric acid

C. hydrocarbon

D. its greenish-yellow colour

E none of Ato D.

(175) burning sodium or magnesium will continue to burn

into chlorine, forming (X) fuses of the chlorides.

2Na + C1

or Mg + Cl

Where (X) is

(A) green in colour

2NaCl

M8C12

B. greenish-yellow in colour

yellow in colour-

D. dark-yellow in colour

E. white

(176) (X) ferrous chloride is oxidized to the (1) ferric salt

into chlorine, Where the colours

P. (X) White; (Y) - yellow

yellow; (Y) green

white (Y) green

r, (X) = pale-green:

green

following. Which one

Q (X)

R. (X)

5.

(X) - green;"" (X)

(177) (a) Cu + Cl2

CuCl

(b) P

PC12

(c) 2P + 3012

2PC13

(d), 20 + 5012

2PC15

2012

2SC12

2-503

ZHC

D.

Using manganese dioxide.

Using magnesium

E. By electrolysis (either use hydrochloric acid, or

sodium chloride solution).

(a) Chlorine is a greenish-yellow gas.

(b) It has a choking snell.

(c) It turns blue litmus red and then bleaches it.

(d) It supports combustion.

(e) 25+

(e) Its V.D. 17.5

Which of the above are not corre

(a) and (b) only.

(b) and (d) only.

R. (b) and (e) only

5. (c) and (f) only

T. (d) and (e) only

(178) (a) 6KOH + 3012

(b) Ca(OH), + C1

(c) CaOCl2 + 002

(d) 2NaOH + Cl2

5KC1 + KC10 + 3H

H2O + Ca0C12 C1+ Caco

NaCl + 2H20

Which of the above of the action of Chlorine on alkalis

is or are not correct? P. (a) only

(179) (a) Fe + 2HC1

(b) 2A1 + 3012

(@) 2A1 + 2HC13

(4) Pb(NO)2 + 2HC1

(b) only

R. (c) only

and (b) only

FeCl2

2A1C13 AIC13

H.

Which one of the above reactions is incorrect?

(a) only

S. (d) only

(180) Chlorine can be used

Q. (b) only

T. none

(a) as a bleaching agent

(C)only

(b) as a germicide to kill cholera, typhoid germs

(c) as a disinfectant

(d) in fire extinguishers

(e) for removing grease from clothes.

Which of the above are not correct?:

P. (a), (b) and (c) only

(a) and (b) only

R. (b) and (c) only S. (c) and (d) only T. (d) and (c) only

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