1977-12-26 — Page 19

經馬育教

真三第張五第日六十月一十年巳丁展事

WAH KIU YAT PO

報日僑華

鐵現

尺公尺尺七區料未黑底

·導以供參考。.

US KAREKKAR.

BRASSHER-E

昨早出試爲不多。

常異落冷課晨日週

成呵氣一發必福樂

勁甚勢走勇轉驥良

育教僑華

1978

hi

「中學會考試題預習專欄

PEST & Dare. D

生物 十二

梁永華 ®

BIOLOGY (12)

Unit 6: Support and movement

II Conventional questions:

1.(a) What is meant by

antagonistic. muscles? (b) The following diagrams,

and N are the examples of the antagonism of muscles. in fish and the small in- testine respectively.

(N)

A: Left muscle blocks

B: Right muscle blocks

X: Circular muscle.

1 Longitudinal muscle

Explain how the antago- nistic muscles

i) in M participate in the

fish locomotion

ii) in N participate in the

peristalic motion"of the small intestine (*The involuntary rhythmic

contractions of the alimen- tary cannal that help the moving and mixing of food.) (c) A tap below the knee ini-

tiata a "knee-jerk"reflex action, The following dia- gram shows the antagonistic muscles of the leg.

femur

tibia

1) Which of the muscles are

extensors and flexors ?

ii) Which pair of the muscles

is responsible for the "knee -jerk" action?

༡༩ལྷ་འ་ཀྱི

) Explain how the muscles

operate during the "knee- jerky action.

iv) State two ways by which

friction is reduced between femur and tibia.

(a) What other functions besides. support and movement does

the bone carry out?

Ans: (a) Antagonistic muscles áre

paim of muscle groups that work by relaxation of one of the muscle groups and simultaneously the con- traction of the other. (b)£) In M, the locomotion of

fish is brought about by the side to side movement. of the muscular tail. This movement is produced by the alternate contractions. and relaxations of the left ́and right muscle blocks.

ii) In N, the contraction and dilation of the alimen- tary cannal are brought about by the alternate con- tractions and relaxations

步,今假出爭,有九成

六天期内跑三次馬

一狀態,質優當可一般奖 #*

否吃得消,有符事實現。 T):下午跑- 上午便要爲一月四日的夜

·阿完夜馬艾有日馬排位,秩序如此,馬迷是 星期三,星炀六,皆有比賽,一月二日(下星期 林密, 不遇變成六天之內跑三次馬,星期一, 大除夕,故不染比賽,但進下週,東則十分 快活谷本星期繳纘「聖誔停火」,本週末爲 之上,今番有態,

五包報有皆被

處第

新女六

B

日的分圾,一月四日夜馬祀磅十大月卅日(星期 一月大日癸馬的配磅,「月四日夜馬及一月七 無忙,後日(星期三)復辦公立即有三項公佈 由於下週变事繁,本週的活動也十分

的起改

HARETER TOMOGR 七班馬担任-第五联分跑一四〇〇公尺及一五七

未有最長途失,因此預

,已稍爲縮短,在今天比賽中四馬負一三三磅 盃,由於已進入一月份,三歲馬與四歲的磅 一月七日賽日,主要錦標爲第六述的警察 ,三歲馬角一二五磅,相差祗爲八磅,曾勝頭馬 馬皆無路程選擇,幸好」,卅六秒一卅二秒四

•BK-KISK (ARK). 將被加七磅,是次变馬 - 第六舷,處女馬及新

|

**L*SH-K-DRASERENK ——

***** 多,但也能緊迫老際,在旺財杯的成積更遠 周,嬴頭馬的次数不够佐治 匝的十八大爲一 年底,經過十八次賽馬,先後勝出十六次 陳觥病房或續大蹓蹓,計到一九七七

老版上田蚴即旺财杯冠軍,但時爲今日

旺財盃成績踞首席 陳毓麟馬房大躍進

再後好五 要的千分

聯嗾分先1

杯 - 變成並無戒瘾的。 「算在內的!所以施萬健,射雅馬發在旺財, 旺財坏成績,和黯班的新馬成績是不對

卷,兹將成積一升至一九七七年底)列下 在旺缽杯城積所列,拱離與賓士爵房俱甚

凡,第六班一六五公 對,琜馬師爲「難」獲李文老路。《老

DOE: KIAREN SKKN (EFC) · AULESBREUEND-REKE -

PHARA KHOG KERED) NEK - BKSETORSHEBEZSEKSIEN

「新年補假。

AGE - BG 1 TK

一月三日(星期天心

KYORKZNS-

由於伇斯關係:一

五!

of the muscles. Contraction of the longitudinal muscle and relaxation of the cir- cular muscle dilate the cannal. Relaxation of the longitudinal muscle and contraction of the circular muscle constrict the cannal (c) i) Extensors:A,D, Flexors B,C.

ii) A and B.

ii) A "knee-jerk" action invol-

ves the raising and lower- ing of the leg. When the patellar tendon is tapped, muscle A contracts and mus- cle B relaxes. This causes the leg to raise. Afterwards muscle, A relaxes and muscle

contracts. This causes the leg to lower

iv) Friction is reduced by 17the synovial fluid in

the joint cavity, and

2 the tough, smooth, slip-

pery cartilage at the anti- cular surface of the bones. The other functions of the bone:

1% Protection- protecting:

delicate and vital organs (e.g. brain, spinal cord

and heart). ON

2/ Production- producing red

cells and some white cells. 34 Storage- storing calcium,

potassium and some fat.

2(a) Explain how the skeleton of birds is adapted to flight.

(b) Explain how the skeleton of insects is adapted to living on land.

Ans:

(a)Feature

|Rigid

skeletón

Function Provides a firm. |frame-work, for attachment of flight muscles Large

·Provides large keel-like area for attach- sternum

Hollow bones

Modified fore-limb "wing"

(b) Feature. Exo- skeleton

Joints

ment of strong pectoral muscle Reduces the |body weight

Supports sets of flight feathera

Function

Reduces. water. loas.Protection. Support the body. Allows rapid

between leg locomotion

Begmenta

Thoracic

Expands as

cuticle.

wings for

flight

Moulting

Permits growth

英文 (十三)香榮光

ENGLISH (13)

Comprehension

Raymond .E.LO

1. Comprehension and Reading

How many times you should read the compre- hension passage depends on, first, the degree of difficulty of the passage; second, the type of langue

the writer uses; third, the nature and the topic of the passage, and fourth, the reading power of the reader:

In doing comprehensions, it is important that you should chanse passages on various topics and of dif- ferent nature. You must be able to, and prepared to, handle any passage with reasonable case. This can

only be acquired by con-

stant practice.

On receiving the ques- tion paper in the examin- ation, read the passage until you have a general understanding of it before you attempt any questions.

An average student may have to read the passage at least two or three times in order to get the general meaning of the whole passage. Some students, under time pres- sure, feel quite at a loss. They t cannot concen- trate; they are afraid. that time will be ruining. out before they can finish the passage is a result, they jump from paragrah to paragraph. And that is why they have missed so many important points. Remember that what appear in the latter part of the passage sometimes may help. to understand what you dir not understand in the first few paragraphs. Just keep your head cool and take your time.

For minor details, you have to refer to the passage from time to time as you go on with the questions,

It is sensible that you read the passare very quick- ly in the first read. The purpose is to find the theme, and to know what the passage is about. Mark the key sentences or ideas in versil Tien vou may read the pass- age the second time, and then the third time. You must read very carefully and at the same time you must think critically what the writer wants to convey to you.

When you read quickly, your eyes travel faster. There is one advantage : you are reading phrase by phrase or sentence by sentence. Your understanding, therefor will be better since you do not bother too much about the meaning of an individual word (which you may not know). You are looking for thought units the first time you read the passage.

When you read relatively slowly the second time, you are looking for details. You have to consider the meaning of individual words or ex- pressions.

You may read it several times more, and think over all the points again.

IT. Comprehension and Understanding

In the Examination, you. must pay attention to the following:

1. The writer's attitude

This is particularly important if the passage is one of argumentation. Sometimes the writer's intention is expressed quite clearly in the passage. But not all writers are so butspoken Sometimes, the intention of the writer is very subtle. In this case, you have to be very careful.

2. Understand the passage

as a whole

-期星

下週賽事十分繁密

日六廿月二十年七七九一届公年六十六園民華中

##

馬敏

【談馬,就可見其銘,我省,新告小過,完全是一番

能無人上車,反觀小告的坐骑,大次都有咁多,

.

塲頭馬,與小告的九場,少了七塲之多;所以,今後,要拚命力有好發現,但馬驚|

今季小羅在嘶「勝利年」以前,難關過兩更足,近期推來推然未

} BKEN?

人們怕他失乎之故。

交代了。

▲那有不勝之利,小麥與「駿阱」出閘尾二, 人此時,「勝利年一上前休戰,臂高馬打真軍, 他鬥志之死,一路力貓,結果追得第二,可以

▲故。「功夫」到直路散晒,「常」出 「功夫」照例放頭,「勝利年」一早在前列, 小羅打眞軍之

阿康,有佐治知道,故意示人以姆-等今已跑军地再颂 --雅說不.

「勝利年」不鮨成爲獨派十元八元的大熱門,其理由就在馬迷

「安弟弟」仍是大感門之一,何以一連兩廣跑來如此之差,是否、大北榔,卅六秒二,卅

老欲

快活谷本週繼續聖誕停火

狀步兩已秒

EKNS DESIS

有期士郎戰轉葉 二秒好九

而巂能更四六郎

有竊及如

有幾近他人兩

KREKEKE

羅國洲贏勝利年

今後應奮發圖强

-SEINEN 周,現時已见輕盈絕頂 ,亦見瘗易,此四身 廿八秒]-全程走來 郎,卅四秒一,卅四 北必發社同安與六化

* 今次出爭 + 前班次雖

似乎退化,我在本欄中,時時他教,娶他 國洲,不免令馬迷們有些社心,蒯小羅本田・ .. 上邁三夜馬的第四:「勝利年」換上

現時租:

借次來仔泡附上

i數秒化 您中有足走秒,有進火計藍

16

創見 秒卅 食用菜不四節錄,流好,來二 卅得 奸然氣八,兩得來

一郎機,壯九獸等今日每二間。番推,來秒籤得但卅

·回轉,秒六雄‧香有走,安有質然力,大窗胡亦起一試: *力七州近畅近,化。田好來州試 彌仍未邃馬 廿化意背起來秒六進入頂身來四

Sometimes you will be asked to pick a correct choice which best sunS up the whole passage or a certain paragraph; sometimes you are asked to pick out the main points of the passage.

Sometimes the writer may deal with several things or develop sever al ideas at the same time. Sometimes contra- sted points are includ- ed in the argument. If you come across a com prehension passage of this type, you should exercise particular: care to analyse its content. You have to find out how all the ideas are related in the context.

3. Vocabulary

Very often, you are asle ed to give the meaning of a certain word or a certain phrase as used in the passare. We all know that even a very simple word (in fact, the simplest word) may have different meanings if it is used in ano ther context. In giving your answers, it is

essential to give the meaning as used in the passage.

化學

朱宏林

mestion 16

Chemistry (11)

2.5 of an i pure sample of calcium carbonate were disnol- ved in 50 cm of 1 hydrochl- oric acid. The resulting sol- tion was then diluted to 250 with distilled water. 25 CX1 of this diluted solution required 20 cm of 0.05K sod- ium hydroxide solution for colete neutralisation, (a) Write down the equations.

for the reactions involved. (u) calculate the percentage

of calcium carbonate in the original sample.

Question 17

In the experiment as shown below, the colourless gas A produced by the reaction between concentrated sulphuric acid and sodium chloride cyrstals was passed over heated: iron and a solid B and a gas C were obtained.

concentrated sulphuric acid

iron

solid B

ges A

gas C

heat trough

(b) Give the equation

(i) for the formation of

gas A;

(ii) for the reaction between

gas A and heated iron.. (c) What was the purpose of pass-

ing gas A through concentra ted sulphuric acid? (a) Why was solid B collected at

the place as shown in the diagram, but not on the iron? (e) What would you see if a few

drops of blue litmus solution were added to the trough? Explain your observation. (f) If 224 cm of gas ◊ were

obtained at s.t.p. at the end of the experiment, what would be the weight of solid B thus formed?

(g) Will there be any reaction.

if the iron is substitued in turn by

8

copper, zinc?

If there is no reaction, ex- lain why. If there is a re- action, name the product and give the equation for the. reaction.

(h) What will be obtained as the

solid if chlorine gas is used instead of gas A to be passed over the heated iron? Give an equation for the reaction.

Question 18′′

(a) Describe the follwing react-

ions, giving the equations, and name the products:-

(i)

Ethanol is warmed with acidified potassium dichrome te solution for a long time. (ii) Ethyl ethanoate is

boiled with caustic soda solution. (iii) Propan-1-ol is heated with excess concentr- ated sulphuric acid to 180°c.

(iv) Phosphorus(V)chloride

is added to ethanoic acid.

(b) Six elements lettered A,B,C, D,E and F, together with their respective atomic num bers were shown in the foll- owing table:-

(i)

element A B C 1}

atomic

5 710 12 15 17 number

E F

Give the letter of the element which would form a basic oxide. (ii) Give the letters of

two elements which have chemical simi 1- arities. T (iii) Give the letter of the element which consists of monatomic molecules. (iv) Give the letter of the element which can. com- bine with element P to form an ionic compound? Write down the formula of the compound thus formed and draw a dia- gram to show its elec- tronic structure. Give the letter of the element which you would

expect to have the highat melting point anong te si elements.

sodium

conc H2SO4

water

chloride.

(v)

(a) Give the chemical names of

the substances A,B and C.