莫二第張大第日五初月三年丑発醫复
郭日僑單
WAH KIU YAT PO
六期星
日七月四年三七九一番公年二十六国民華中 有教僑華
उस
1973 中學入學試
試題預習專欄
智慧出狐社生制
英文科
1973英文中學會考試題預習專欄
(廿四)
1973英文中學會考試題預習專機
生物科 (十四)
Biology (24)
Answers to the questions of last week
ans.
The diagram below is a verti
cal section of the human skin:
Hair papille
VASSER
Blood
granular layer forms Horny layer
St Malpighian layer.
Hair Hair follicle
Erector muscle
Sebaceous
Connective tissue
gland Dermis
•Fat Tissue
Human skin (In Vertical Section)
hooms
Sweat
Nerve
The human body is covered completely by a protective layer called the skin. The outer layer. of the skin is thin and contains no blood vessels. This layer is known as the epidermis. Below the epidermis is a thick layer, the dermis.
(1) The epidermisi
This is a thin outer layer composed of stratified epithelium. The cells in the deepest layer, the Malpighian layer, multiply and, in growing, push the older cells upward toward to the surface As these move upward, they become flattened. The epidermis is again subdivided into two layers:
(i) The horny layer.
The more superficial cells. of the epidermis, being far removed from the nutrient supply, gradually degenerate as a result in which thei proteins are transformed into a special type, known as keratin. It serves as a protective layer for the delicate underlying tissu from drying, from injury and from the invasion of bacteria.
(ii) The Malpighian laver
ues
It is the deepest layer of the epidermis. The cells in this layer undergoes active division and so produce new living cells constituting a granular layer. As the newly formed cells move upward toward, the surface of the skin, they become flattened and die off, forming the horny layer.
(2) The dermis:
The true skin, lies below the It is formed of
Malpighian layer.
loose connective tissue containing fatty tissue, sweat glands, se-
baceous glands, hair follicles, hair papillae, erector muscles,
blood vessels, nerves and sensory organs.
(i) The hair
It is a hollow rad of dead fibrous, epidermal cell
surrounded by thin hard cuti -cle. The hair develops inside the hair follicle. Each hair follicle is a hollow tube having a papilla -like structure at its
bottom, from which the hair is supplied with nutrients.
(11) The sweat gland
It is distributed in the skin all over the body. Each gland is a duct coiled up into a ball-like struct- ure at its base, lying deep- ly in the dermis, and is supplied with a net-work. capillaries. The secretory. cells of the gland absorb water with some salts, urea and other waste products from the capillaries and pass them to the surface of the skin as sweat.
(iii) The erector muscle
It is attached to the hair follicle. When an animal
is in fright or cold; it enables the hair to stand on end.
(iv) The sebaceous gland
* It usually opens into the hair follicle. It secretes an oily substance called sebum which makes the skin and the hair soft and water proof.
(v) The hair papilla
At the bottom of the hair follicle is the papilla. It is the region where the new thair is grown.
(vi) Blood vessels
They are distributed all over the dermis. They supp ly the skin and hairs with nutrients and remove waste products from the skin. The blood vessels are also to play an important part in the e regulation of the body
emperature.
(vii) The nerve fibres and sensory
organs
* Nerves and their endings are distributed over the dermis. They enable the skin to feel temperature, pressure, pain and other external stimuli
(vii) The fat layer.
A region serves for the
It function storage of fat,
- to prevent heat loss and to protect the tissues from mechanical injury.
2. ans.
The general functions of a mammalian skin are: (i) protection.
The cuticle of the skin, being composed hard and resistant cells, forms the protective layer of the body to prevent the under- lying tissues from drying, from injury and from the invasion of bacteria and
cro-organisms.
(11) Sensory
In the dermis are sensory organs and nerves for heat, cold, touch and pain sensat- ions.
(iii) Excretion
The skin is frequently. said to have a minor excret- ory function. The metabolic wastes of the body, such as Water,
carbon dioxide and urea are discharged by skin in the form of sweat.
(iv) Storage
The excess fat is stored in the deeper part of the dermis.
(v) Vitamin D manufacting
It synthesizes vitamin D when it is exposed to the ultra-violet ray.
(vi) Regulrotk
ure
of body tempera
As an important
function of the skin and is accomplished by the action of its blood vessels and by the evaporation of sweat.
Questions for next week
A multiple choice revision will be given.
英文科 (十三)
ANSWERS TO PREVIOUS EXERCISES
1. C 2. D
SECTION A÷
4. B 5. C
7. R 8. P 10. R
36a
SECTION B: II 1. What is the age of your
grandmother?
2. We have to do it care-
fully.
If you try, you will
succeed.
mother can cook well..
My moth
He is not only clever
but also diligent.
6. Although it is getting
dark, they go on working. Someone stole John's new
watch.
8. We could not sleep In
that hot night.
What is his address?
10. She got her living by
SECTIONFA
(multiple choice)
Read this carefully:
It was Christmas, and there was big party in the house. Guesta caƏ and went, but the party continued. Then the bell rang.
Several people shouted, "Come in!" and a small man opened the front door and came in. Nobody knew him, but the host went meet him and took him to the bar for a drink. The man sat there happily for an hour and a half and drank. Then suddenly he stoped and looked at his host. "Do you know," he said, "nobody invited me to this party. I don't know you, I don't know your wife I don't know any of your guests. wife and I wanted to go out in our car, but one of your guests' cars was in front of our gate, so I came here to find him - and my wife is waiting in our car for me to come back!" Now choose the correct answer by drawing
firm line across the right box.
The party was held at (A. Christmas B. New Year.
D. garden
C.
B CDT
0000
The guests shouted
Come in
"Drink it!"
"Hurrah”
get out" B. "Good-bye!")
The
2. DOODO stayed in the party for
(A. an hour B. two hours. G. half an
bour D. several hours 3. 11⁄2 hours)
AB
uddenly means
(A. at once
G. Gradually
G D T
English (24)
The following are the answers to last week's Exercise.
1. an
2. the 4.
10. some
the
some:
The following are the answers to. last week's Exercise 2.
(a) "He looked very unhappy, did
he?"
(b)
he did.".
"Yes, he
"He is very bad-tempere
isn't he?!!
"Yes, he is."
(c) "There weren't many people present, were there?" "No, there weren't.
(d) "She couldn't catch the bus
could she?"
"No, she couldn't.
(e) "The window needs repairing,
doesn't it?"
"Yes, it does."!
(f) None of them knew the answer,
did they?"
"No, they didn't.
(g) "He's been living here a long
time, hasn't he?" "Yes, he has."
(h) "She 11 help us, will she not?
"Yes, she will."
(1) "We must not forget to remind
them, must we?"
"No, we must not."
(j) "He should not have said that
should he?"".
"No, he should not.
The following are the answers to last week's Exercise 3.
(a) Children seeking admittance to the school must take an entran -ce examination.
(b) His shirt was torn, but it was
not very noticeable.
(c) The actor gave one of the best
performances of his life.
(a) Before they took the examinat- ion the teacher gave them lots of advice. (e) Don't be decepted by appearan
Aces
Complete each of the following sentences by UNDERLINING the best of the alternatives given. DO NOT write the answer in the blank space.g
Example: The teacher said his
work was
dissatisfied
unsatisfied.
unsatisfactory
dissatisfaction
☐☐☐☐☐ (a) When the waiter brought his
immediately
slowly B. quickly)
ᄆᄆᄆᄆᄆ
5. He came to the party because he
O
(A. could not get out B. had broken down C. needed repairing D. was new I. had no parking)
SECTION
II. Fill in the blanks 1-
1. As hill is to mountain
sea to
!...
GALDE
2. As horse is to stable, so is
car to
3. As herd is to cattle, so is
to people.
4. As hungry is to hunger, so is
to
5. As man is to house, so is king to
III. Rewrite the following, putting in
capital letters and punctuation marks.
well thats the last scene did you.
enjoy it asked david
yes.
81d
margaret
half past ten were much time for supper where shall we go
lets go to the Kings restaurant
we want there three days ago
̈he did not have enough money to pay it.
charge
bill
(b) The film was
price receipt
though
the actors did their best.
uninterested
disinterested
uninteresting
disinteresting
(c) They did not want to make
with the new girl.
friendship: friends
friend
a friend
(d) The sailors spent three days
in an open boat without any
foods
meal
food eatable
(e) The judge said the witness
would be punished if he gave false,
proof
reference
testimonial evidence
(f) He went to stay at his sisters
cottage to
111nesa.
recover
repair
from his
restore. regain
(g) The old woman lost her
and fell down the stairs.
footstep
balance supporting
weight
(h) The members of Parliament
wanted to
the old
law and introduce a new one
rid
expel
clear
abolish
未亮输入第六第三頁)