國泯華中
育教 日七初月二十年午庚曆夏
展覽廳舉行 免費供市民參觀。「世界兒童繪畫展是 至十一日,由上午十時至下午九時,假香港大會堂低座 畫作品的「世界兒童繪畫展」,於一九九一年二月二日
::'〔·文化消息:S薈萃世界各地,J08 個國家的兒
造、節日與進蝇方式,展示各不同的風俗習慣。 運動、朋友和谐··這些圖畫反映出各國兒童所
·一世界各地的風箏;孩子們逛中的風箏,描繪出他
·們欲在空中明翔的夢想。
小篆 陳淑兒
(上水畫法拼習班書叢展品,二十九日至三十一日在香港大會堂照出
KZ THE ICL WWW Nck For yo€ IL OL
珍本未必貴 流嘢反賣錢
impulse.
報日僑
water
二期星 日二廿月一(一九九一)年十八國民華中(26)
(ii) Cerebro-spinal flutd. It provides. nutrients and oxygen tì the nerve. cells. It also protects and provides : mechanical support to the spinal cord and brain.
(1x) A is a
sensory
which carries nerve impulses from "the receptor to the central nervous system.
neurone
(x)
as
(iii)(1):Cerebral cortex/Grey matter.
It acts as the site of higher mental activities such memory; imagination. (2) It is folded to increase surface area of the grey matter which results
in
increased. co-ordination and Tocalization of functions. in: the cerebral cortex.
B is mator neurone which transmits nerve impulses from the central nervous system to the effector:
(1) The brain does not receive the pain sensation but the withdrawal reflex proceeds. (2) The brain receives the pain sensation but no withdrawal reflex.
1991 中學會考預習專欄
明德出版社
MILL & DALE PRESS.
(iv)
How
(ii) Name the fluid contained in 0.
and state. its function,
(iii). (1) Name E and give a function
of this part of the brain。 (2) Why is its surface folded so **__much?
does the distribution of merve ce11: bodies in brain. differ from the spinal corda
Peraus
dust
Biology(17)
(v)
1.H. LAI"
the What is the response of human subject when touching the hot object?
Nervous System and Tropisms
(vi)
Name ...
in the correct order,: the nerve neurones involved. in the reflex action in part (v).
(vii) State two advantages of the type
of response in (v).三
(viii) State
Finger
(x)
The diagram belowshows. the (in longitudinal human brain section), spinal
(in. cord transverse section} and right. hand. (The parts are not drawn to scale.!!
(ix) Name A and B and state their
functions.
What would be the effect if.the. nerve fibre has been cut in (1) position x,
(2)position Y
(iii) Briefly describe the advantage Twhich growing plants gain from the response shown by seedling A.
(1):
two functions of the
of the cerebellum
mammalian brain.
With respect to growth and curvature...of the radicles of
and C. what: seedling A, B
be changes, if any would. observed after a few days?
li)
What conclusions can be drawn from the observation In (1) for (1).seedling A and B,
(2) seedling A and C.、
(V)
and c
(the gap:)
Spinal.. cord.
Brain
Name C and state its function in
̇transmission of
the
nerve
An experiment was set up using the apparatus as shown in the diagrams.
Solution
"Seedting A: radicle untreated: (1) Synapse. it:ensures that nerve
1991 中學會考預習專欄
明德出版社
MILL & DALE PRESS
Economics (17)
Seedling B: tip of radicle
removed.
Seediing E: radicle untreated..
impulses can only be transmitted
in one direction only. 1.e. from the "axon of...one neurone to the dendron of another neurone.
excess demand. Ne. oven-
crowdedness:
cell. bodies are. (iv) The nerve.
distributed outside in brain but they
inside the are enclosed white matter in the spinal cord.
The right hand bends: by the contraction of the flexor muscle..
(vi) Sensory: neurone
relay
neurone
motor neurone;
(vii) Tt fs rapid and protective.
{viii}lt, co-ordinates the contraction
of the skeletal. muscles.to. perform precise movements and of the maintains the balance body.
(b)(i
The cancellation of fake
-ALAIN LI
uction means an increase in
Chiuantity demanded makesky decr
ednes
beseduced.
圖
(4)
·Seedling A:the radicle continues to grow and: bends towards: the porous pat
Seedling B:the radicte has no
further growth bending.
Seedling C: the radicle continues to grow downwards without bending. (i) (1) The tip of radicle.
responsible for the growth ̇and curvature..
(2) It shows‘that: the radicte tends to grow in the direction with a supply of water. It also shows that the
•effect of the stimulus.of water is stronger than that of gravity.. (iii) It helps the seedting to obtain
water.
(iii) The Early Bird' tickets makes the MTR service before the peak hours a good substitute for the service during the peak hours. Thus there will be a decrease in demand and so the overcrowdedness will be eased.
further eased: crowdedness
CHAPTER 5(Cont.j
A. Answers to Multiple Choice Questions:
3.48
8. D
eased
overcrowdedness
B. Answers to Essay Questions:
(a)(t)
of
Because the MTR can'technically increase the number 'thains. (The supply. curves are assumed to be vertical on the: ground that the MTR can alter the number of trains. asit wants within its technical capacity.)
$85 $85
HONG
Demand of the store-value, ticket users that. is the main component of the total demand during the pack hours..
(ii) The impostion of a surcharge means an increase in price..
Thus, the quantity femanded. will decrease and the degree. of overcrowdedness. will be reduced.
吵
86
(11) - Technically, there cannot be any further increase in the
'humber of trains..
eased
overcrowdedress
The alternative passage to Central via the Kwun Tong- Quarry Bay extension at a cheaper price is a substitute. Thus there will be a decrease in demand and so the
xercrowdedness will be eased.
RIES
further cased:
crowdedness
(c) Whethemes price increase can lead to a revenue, increase..
"depends or the elasticity of demand. Since the MTR It's necess to many people it is quite likely that the price can grease the revenue. However the NTR's attempts to. prue fare with the Early Birds tickets and not to impose Surcharge on those passengers using the Kwun Tong Line extension may suggest that the NTR's real attempt is to solve the problem. Otherwise, the MTR may raise more revenue with an over-all price increase.
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