1984-10-03 — Page 24

頁四第張六第日九初月九年子甲曆夏

WAH KIU YAT PO

報日僑華

三期星

1985

(3)salivary mucin/

intestinal mucus

0

中學會考試題預習專欄

生物

®

(三)

明德出版社 梁偉宏提供資料|

BIOLOGY (3)

W.W. LEUNG

MILL & DALE PRESS LTD.

Unit 1: Nutrition

6. The following diagram.

shows an experiment to investigate the

content of a compound in fruit juices,

Results: -

required to decolorize the DCPIP solution·

Dropa of fruit juice:

a syringe contain

fruit juice

Blue DCPIP (dichlorophenol indophenol) solution

Boiled Lemon.juice

21

more than 50

Name the compound

which is being tested in this experiment. b) Which juice contains

the highest content of this compound?

) What is the effect of

bailing on this.

compound? Which

results in the experiment. support

"your answer?

Name the disease.

caused by lacking of

this compound in aur

diet.

Give another food source of this

compound.

Do green plants need

to take in this

compound from the

surrounding for

survival? Explain

your answer.

The diagram below represents a model

used to demonstrate a muscular movement in our body.

rubber tubing

-vasaline

marble

a) What will happen if

the rubber tubing is squeezed at x? b) (1)the rubber tuhing?

(2)the marble? (3)vaseline?

c) What is the function

of the substance represented bye vaseline?

d) (1)State the muscular

8.

Vitamin. Vitamin

movement

demonstrated by the

model.

(2)What is importance

of this movement? (1)State. a component

of food which stimulates such movement... (2)What may be

resulted if our food lacks this component?

The co-ordination of

contraction and dilation of skin capillaries, pupil reflex and blinking of the eye is similar to that demonstrated above.

(1)What is the feature.

of the co- ordination of these movements?

(2)State the stimulus

for each of these movements.

The table below shows. the relative food value.of five kinde

of raw food in a diet.

D(mg):

0

(停ò

0

0.02

0.

:0

0

0.

影

50

(8)

Fat j Carbohydrate Calcium

Vitamin

A(mg)

102.

。

05:

Protein

Pood

(g)

(g):

Rice

6

1

87

生

Fish:

17

0.09

Pork

12

:0:

11

0.

Chicken.

11

4:

10

0.

4.23.

(2)

Q.

0

笼

Cabbage

a) Which two types of

food contain the similar energy value? b) From the table, why

is fish the most: suitable food for the healthy growth of a "child?

c) If a child is fed on

rice only, what kinds of disease would develop after a period of time? Explain your

anawerr

d) Which two types of

food are more: important for the development of healthy bones? Explain your answer.

e) Which three types of food are suitable

for

a man who has a blocked bile duct? Explain your answer.

Answers:

નથી અન

Vitamin C

Lemon juice

Vitamin C can be

destroyed by boiling.

The results of lemon:

juice and boiled

lemon juice support this.

Scurvy.

Vegetables..

No.

Green planta can

synthesize their own vitamin C.

The marble will moVE

to side B.

b) (1)oesophagus/

intestine

(2)bolus/food.

c) Their lubricating

action helps the

日三月十年四八九一歷公年三十七國民中 息消邨新育教

passing of food along the intestine.

d) (1)Peristalsis..

(2)It propela food

through the digestive system. d) (1)Roughage.

(2)Constipation. f)(1)Automatic and

involuntary. (2)Contraction and

dilation of skin capillaries: change in surrounding temperature.

Pupil reflex:

change in the intensity of light entering the eye. Blinking of eye: foreign substances

·approaching the

face:

Peristalsis: bulky

food.

10 kg and 15 kg are connected by a light inextensible string which passes over a

smooth fixed pulley - Initially, the 10 kg block:regta on the: floor and the 15 kg block is held 2'm above the floor as shown in figure 1. If the system is now released, (a)determine the

acceleration of the system. (b)find the tension in.

the string.

(c)find the velocity

with which the 15 kg block, strikes the floor.

(d)find the time required for the 15 kg block to reach the floor, (e)find the maximum

height reached by the 10 kg block.

(b)If the frictional

forces on the 10 kg, 20 kg and 30 kg blocks are 20 N, 10 N and 60. N respectively, find (i) the acceleration

of the system, (ii)the tension in

each 'string.

30kg

20kg tokg horizontal floor Figure 2.

As shown in figure 3. a load of mass 50 kg is raised by means of a pulley system. The efficiency of the pulley system is 40%.

Rice. and pork.

Fish contains a rich amount of protein, calcium and both vitamin A and D which are important for the growth of a child, c) Night blindness and

scurvy would develop since vitamin A and vitamin Care lacking: in rice respectively. Fish and cabbage are more important because they contain a rich amount of calcium which is essential to the formation of bone. Rice, chicken and cabbage. A man with a blocked bile duct. cannot release bile to the duodenum and therefore cannot digest fat efficiently. These types of food are Buitable for him

since they all contain less fat.

物理

(三)

明德出版社盧雄國 提供資料

PHYSICS (3)

H.K. LO

MILL & DALE PRESS LTD.

Exercise 2: Mechanics.

(Taking acceleration.due

3

to gravity.g=10ms-

Two blocks of masses

2

你

floor

Figure

okg

A:pile-driver.of mass 10 kg is raised to a height of 12 m and is allowed to fall on to. a pile of mass 12. kg, which is to be driven into the ground. (a)Find the velocity of

the pile-driver as it strikes the pile. (b)If the pile-driver-

and:the.pile move together after impact, calculate their common velocity just after the impact. (c)If the pile then

comes to rest after. penetrating-0.5 m into the ground, calculate the average retarding force exerted by the ground on the pile.

3. Three blocks of masses

10 kg, 20 kg, and 30元 kg are connected by strings as shown in figure 2. It is then pulled to the right with a force F-600 N (a)If the horizontal:

floor is frictionless find

(i) the acceleration

of the system,

(ii) the tension in

each string,

Effort

50kg

Figure. 3

(a)what is the velocity

ratio of the pulley system?

(b)Find the mechanical

̇advantage of the

machine.

(c)Find the minimum:

effort required to Traise the load. (d)If the effort applied

to. the system is 600 N, what sort of motion. will the load perform.

5. A plastic cube of side

10 cm and density

-3 900 kgm floata in water (density

100 kgm3) with the

upper. face horizontal. (as shown in figure 4) (a)(i) What is the

upthrust of water on the cube. (ii)Find the fraction:

of the cube immersed. (b)If oil of density

-3

720 kga

is.poured onto the water until it just covered, (as shown in figure 5). How much does the cube: rise?

Plastic Plastic cube

Water

・Water

Fig.4

Fig-5

沙

粉水

犬

新

却

版

粉嶺臨所屋區非法泊車」乃誤會

一 辦事處職員無優待 門前泊車屬權宜計

釋,以解開居民的疑惑。

停泊車輛。上. 民切勿因此而誤會辦事處職員擁有特權佔用通道 - 暫准停泊在辦事處門外,待適合地方他遷,居 粉嶺臨時房屋區由於未有留車位供駛員停泊,故 房屋署一位發言人對此項投訴解狮時表示:

車場,應可供作辦事處駛員泊車之用-該發業人 至於,讀者所指臨時房屋區內二十座雕件

她的情况便不再出現。 車位,以解决問題,所以在見得理想地點後,上 解决辦法,當局正找尋適合的地方劃職專用 門外,方使他們工作上的箭耍,但此舉屬於短期 -行一個折衷方法,乃准許聯區將車停泊於辦事處 在在稍留地方爲職員提供停泊汽車。 唱:該發言人指出,有鑑於此,辦事處便暫予實 - 由於粉嶺臨時房屋區乃屬於舊式設計者,故未

·然預留地方作爲辦事處職員停泊汽車的用途,此 雖乃方便職員在工作時所需時的泊車股施,不過

在一般新落成之臨時房屋區內,其設計上必

房屋署一位發言人表示,在覓得適合地方供 衆地方泊車的特權。 粉嶺臨時房屋區職員停泊後,上述的情况不會復:他强調,在臨屋區二十座砒鄰一個免費停車風專用車位,當局則認爲此法更容易使居民產生 停泊在辦事處門前,此舉非因職員有任何特檻。 於辦事處的職員所有,故他懷疑是否因此而有公因拳本處職員因工作用車位往返 )。 - 辦事處臧员停泊車輛 - 故現時祇有安規五日車輛,有受到任何方面的干預。據悉,該輛私家車乃屬該停車場便常告泊滿車輛,極難找到空位泊爾(

·粉被臨時房屋區因暫未兎得適合地方,給予,法停泊,佔用公来通,然而,該輛私家車並未表示,由於此乃屬於一個冤贽公眾停車場,故此 塲,任何人士均可使用,既然如此,辦事處的瞭誤會,因其爲一個公用停車場,劃定專用車位時 ,居民便會以爲辦事處厭員與居民爭佔地位使用

1. 發言人指出,他若在該停車場內劃定多個職

,一位粉嶺臨時房屋區的居民日前向本報投訴 員不使用該停身塲實令人費解。

J及安全島〔園左)方便行人橫過馬路。有關工 宇路口加建一組輔助行人交通燈系統宀箭咀所示 A:當局决定在紅梅谷路新翠邨隆亨邨交界的十

新翠邨與隆亨榔間紅梅谷路

十字路口加交通燈

程正在進行中.

方便居民橫過馬路

.,此舉經常造成不少驚, 除鏡頭。 ::

有關報導。...

橋-以輔助居民横路紅 梅谷路 - 而本報亦會作,

處路面興建一鍞行人天 曾有居民提議在該

.經過居民產次提出

上行人燈號,另正在進一块速公路。 八十七號B投入服務

邨及隆季邨交界路口|安全岛設施。 民往來。 郁的郁民,投訴有關紅

..有關當局已决定在一行建點行人路橫過馬路 上述路口的交通燈加裝與汽車爭路橫過這段行人通道,方便兩旅店一島等設施,以順民意, 察所得,工程人員已在旅,以致邨民經常需連接新翠邨與隆亨郁的興建行人軸助徒,安全 盤系統,以方便兩郁邨 接獲新翠邨及隆亨邨兩經常循橫過遺段路面。 郁民冒險橫過馬路的十 設立一組輔助行人交通| 本報在過去數月,乘搭該等巴士著案,故法,就是在原來經常有 沙田紅梅谷公路之新翠路口,以及馬路中心的亨邨之巴士乃設於紅要求之下,當局則决定 據本報記者現场殿|梅谷路缺乏行人過路設谷路天橋橋底興建一條行人交通燈系统,以及

由於沿經新翠邨及 錢往來,因此越民都易避免不必要的意外發生

梅谷路兩旁,邨民往來實行一項比較折衷的方

·雖然當局已在紅梅字路口-附加一組輔助

·共交通服務 - 由本遄起士服務計劃 行走沙 開關一條行走新田畴至區的多條巴士路(包

新田圍對九龍市區的公此外,配合加强巴 ;有關方面加强沙田來九龍中部繁盛地區。

新田圍闢新綫 至大角咀碼頭

大角咀碼頭的八十七號

8巴士 - 方便居民往

插八十一號M·四十八 號A,六十九號‧

在氏說:將內現

-

市區屋邨通訊

有兩個街市,在第二

號),在班次時間及路 较均作出更改。

號,七十三聯及八十七

∴ 新坦的八十七號日

式的新街市;居民稱 與第四座之間的是正

作比較有系統的排列,並嚴禁群 前由於地點較差,生意亦比較淡 四兩街市排椅,將乾濕分開,的街市,稱爲新街市,新街市以 黃竹坑邨辦事處計劃整頓第 爲舊街市,另一個街市是第四座

·販用行人通道。

實行。 民來面投訴,指

兩年後才能付請 玆哪一位居

思階段,預社需 - 網的仍處於带

出第四座街市案

埤饽况乩爲混亂

* 推糍的商販將.

·貨物探出格前 .

·佔用通道,連大

.度走廊也被货物.

蛙塞 - 阻碍行人-

正視這個問題。 加高,辦事處意。

近幾個月更樊本. 已經有此現象, 街市一直以來 •

麗戲

記者將居民

·的投訴向技郝拼

-飂事務經理程之

似的投訴!事實 事處也會接獲類

健囊示,以往辦

出通哦。

市街座

四第

劃計善改究研處事辦邨坑竹黃

頓整將

檔攤貨濕乾開分擬

少後

首班開出時間上午五時 -鎖行-班開出時間晚 上十一時十分(新田

時四十五分(大角咀碼 五十分〔新田)龚

)及十二時零五分(大

;但自從本年十

,二月底 拆第六

-爭對手滅

小販揽灣區之

少:第四座街市

的生意變得好了 接促成了他們有

很多,相信這間

費九角。 一 道收費至新毌篮一段收

·角咀碼頭),繁忙時闖 費「元二角,獅子山熙| 毎十分鐘一班,全程車

·四座地下本來是

老街等。

,於一九七五年

新田圍邨及秦石邨往來

時,由於有需要

此大都不願遷往

在黃竹坑邨,因 們主要都是居往

政局街市涎擬經

們 是可以標投市 才改作街市。做

路綫有修改的巴士分

至於,六班次與

,

巴蔵下車後

,均不惜冒險在沒有轉

有關工程現已進行

助行人過路設施下,在中,相信該組椅助行人

相

一個十字路口過馬路 .

.紅梅谷路連接天群處的過路系統短期即可使用

垂梅先生:

彩虹邨滑梯有缺點

,彩虹邨現存多個滑梯,疑因是石頭製造

己身體向下推,較一般不過鋼製造的滾梯

- 梯滑這不硬,且需要使用者用手足將自

道功能差了一大截。

不如更改成不銹鋼滑梯。

·愚見犯爲該等滑梯既然其上述整站-

此令居民感到非常不便。

固及白角臨時房屋區的居民;都是依賴

·屯門湖銑邨、麵媒邨、兆山苑、美樂花

建醺有關當局,應注意這個問題,適當

银行非常缺乏,特别是某些大規模籤行,因

·邨商塲及美榮花園商場的公共服務,但其中,

屯門屋邨銀行缺乏

彩虹邨其座單位居民上

-的更添多幾間。.

新翠邨正改善環境

黄也上

·程氏透露,於新棱投入,非繁忙時,鬼辦本年第二期滅數運動時,太邨各座互助 蚊、處及魔等運動。新界市政署日前於本區 新界市政署沙田分處緊密聯絡,共同安排滅

·令批承辦商定期噴洒殺虫水外,亦經常與 境優美,遊發出之花圃甚多,本辦事處除妨

·在滅捕岛保持環境生方面:本邨段

已與警方聯络-考慮嚴厲執行檢控違例泊車

·有關通往市場道路違例泊車,本辦事處

方使居 加速守交通規例,儘量減低速+ ,並立「嚴禁泊車」告示牌,務使戴者 【米,目前,該段臨時道路已設進行人輔助技

環境之建議,茲謹覆如下:

「風程张迎」君來函,提出改善沙田新翠邨內

區啓者:貴報日前刊登讀者「新翠邨居

其他街市。

市的八十二個攤 劃,準備將該街.

一系列的改善計

現瑰昄將貨物旒出通道,是會下外的通道亦將相應,方便居 :有人巡視該處,辦事處人員如發,同時亦易於管理。此外,街市 理員離去之後,他們又將故物惘 ,研究計劃的可能,並且要

上,辦事處並非坐視不理,一向 台攢源分開,一來方使居民購物 本處入虽不能長註於該街市,兩年後才能實行,因爲需要經費 令他們將貨物搬走的。不過,辦 民出入。然而,該計劃相信需要 販合作。

班間於至。

青媽頭

·

—四十八A 新蛋| 善緻概之多項建議,本人亦欣悉

有關世報讀者對本部外国改 委區會及商戶亦予大力支持:

頭及十三彩園至 七十八上水至佐敦道碼 闖邨至沙田圓洲角),

大九八八九八八與本人聯絡爲荷

倘查報或其他居民有任何疑

各有關部門及機構現正在處理中

問,總在辦公時間內殺死了,吉

華懽日報編輯先生。

新翠邨辦事處房屋事務經理,

1.

言群