買四第張六第 日五初月八年戌壬歷夏
1983
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BIOLOGY (1) WW.EUNG
MILL & DALE PRESS" LTD.
UNIT 1: NUTRITION
1.The following table
showa the relative food value per 100 of five kinds of raw food in a diet.
:00
16
4
Fish
17
18
102
-0.09
[ Pork.
12
40
.0
1.1
.0
Chicken
11
0
10
Cabbage
2
40
4.23
50
4
0
0:
0:
0.
0.02
0
Rice
0
T
-0%
០
0
Food
(g)
Protein
Fat
(g)
·(g)
Carbohydrate Calcium Vitamin (mg)A(mg.
C(mg) D(mg)
Vitamin Vitamin
(a)Which two types of
food contain the.
similar energy value”
(b)From the table, why
WAH KIU YAT PO
is fish the most
auitable food for the healthy growth of a child?
(c) If a child is fed on
rice-only, what kinds Lot disease would fdevelop after a period of time? Explain your
answer.
(d)Which two types of
food are more important for the deve Lopment 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,
2.X is a secretion
produced by the human digestive system and
is thought to be an enzyme, The following diagram showg the results of an experiment to.
investigate ite
functions and
propertie B:"
glass tube
•cooked egg white
water
ster
+2 drops
of dil. Her
All the glass tubes were fully filled with cooked egg white at the
beginning of the experiment.
(a)From the appearance of
the cooked egg white. in A and B, what. conclusion can you. draw about the
function of X?
(b)Describe the result
報日僑華
in C and D, and
explain how the results on comparing with B support the hypothesis that xis -an enzyme.
(c)Row can the rate of
enzyme action be measured? ·.
(d)How do you know that
X is not pepsin?
Ans.
1.(a)Rice and pork,
(b)Fish containe 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 aince vitamin A and vitamin Care lacking in rice respectively.
(d)Fish and cabbage are
more important because they contain a rich amount of calcium which is essential to formation of (e)Rice, chicken and
cabbage. A man with a blocked.bile duct cannot release bilë to the duodenum and therefore cannot digest fat efficiently. These types of food are auitable for him.
since they all contain less fat. 2.(a)X can break down egg
white protein.
(b)C:egg white bas not
been broken down
hy boiled X. D:egg white has not
been broken down by X in the presence of dilute hydrochloric acid. Since activities of enzyme are
PH- dependent and proteins can be denatured at high
enzyme
temperatures, the
facts that the
function of X is
二期星
løst in an
acidic. solution and after. boiling support the hypothesis that X is an enzyme. (c)The rate can be
measured by the decrease in length. of egg white per unit time..
(d)Pepain can function
best in an acidic solution.
物理
日一十月九年二八九一緜公年--十七國民華中
明德出版社盧國雄 提供資料
PHYSICS (1):
H.K.LO
MILL & DALE PRESS LTD",
Mechanica:
Exercise One
(where necessary, take
the acceleration due to
∙1.°
gravity, R = 10 ms-2)
(a)In figure 1, a.wheel:
of masa 100kg and 10m in diameter rests on a horizontal. surface
(i)what horizontal force
applied at the aile would be necessary. to enable it to surmount a step of height 4 meters? (ii)What is the direction
and magnitude of the: minimum force exerted to the wheel so that the wheel will be pulled up the step? (b)In figure 2, two blocks
of masses 10kg and 5kg· are placed in contact on africtionless table A horizontal force F ie applied to one of the blocks.
10 kg
Fig. 2
Find the force between the blocks if
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彼等誰在規定
儲進展。「成》 神情,並研究在上海召開國際成入教育研討會兼 「食報告本港成人教育發展,提出亞洲區成人教育 訓練程新計劃,商議明年盛區會議由香港主餘, 協會司库鍵盤,及秘書李汝大。四代將向大 | 重光 + 旺角勞工子弟夜校校長郝玉英·成人教育, .. 香港代團提名中文大學校外部主持講師黄
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| 來屆會議主辦地方等項目。 個國家及地區代表共二十六名。討論主題爲教育 平等與普及化,成人教育專業訓練,國際計劃及 |西亞、星加坡、印度、印尼、菲律文及香港等十 十日至十八日在日本藤岡、大阪及東京 行 主被邀參加者有澳洲、南韓、日本、泰國、馬來
·本年度亞洲太平洋區成人教育會議定於十月 本港四代表下月中赴日參加.
[學生時代」九六期 焦點「洋水甘苦談」
「亞太成教會議討論
一對所造成之不良影响。(成), 學的激烈競爭對幼童帶來之壓力,及幼稚園教 入學統籌辦法,主要召的爲消除進入較受歡迎小 三,將在明年九月起實施之穿立及資助小學小一
教育平等與普及
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闾申請表格敕多,大約有三百餘份。 一百份左右。另外一間位於北角區的小學,則收 :教育署小一入學組發人昨再強調:安鄉中
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the 10kg block.
(i)F=15N, is applied to
(11)F=15N, is applied to
the 5kg.block
2.
In figure 3, a block hangs from a spring balance supported from the ceiling of an elevator,
cable
Fig. 3
4.
育教僑華
end of the ladder and the horizontal
(iv)find the resultant
force acting on the lower end of the ladder.
In figure 5, a bullet of mass 0.01kg is shot horizontally through the centre of 2kg wooden block A with velocity 2400mg-1 and becomes embedded in a 0.99kg wooden block B. Tf the.
(a) If the elevator has an centre of gravity of
upward acceleration of
block A is observed to
2.5ms-2 and the balance rise a vertical distance
reads 100, what is |of 0.2m, càlculate
the true weight of the block?
(b)What sort of motion
will the elevator:
perform if the balance reads 64N.. (c)What will the balance.
read if the elevator moves upwards with uniform speed. (d)What will the balance
read if the elevator moves downwards wit飯 uniform speed. (e)what will the balance:
read if the elevator cable breaks?
3.
In figure 4; a uniform. ladder of mass 160kg and length 10cm is placed. with its upper end.
against a smooth 'vertical wall, If the
lower end of the ladder iam from the foot of the wall Fig. 4
/
(i)construct: a force
diagram indicating all the forces acting on the ladder.. (ii)find the magnitude
and direction of force acting on
ladder.:
i)find the magnitude.
and direction of frictional:force
between the lower.
1983
中學會考試題預習專欄
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other end of the rod so that 5m of the rod are submerged.
Fig.
(1)Where is the point
of application of the bouyant force exerted on the rod?
(ii)Find the magnitude of the bouyant force mentioned in (1). (iii)Find the weight wa
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