حلول تمارين كتاب اللغة الانجليزية السنة الثانية ثانوي ج4

Choose the one word that best keeps the meaning of the original word written in bold in these sentences from the text:
The global energy situation began to change significantly in the second half of the last century.
A. occasionally -B. frequently -C. greatly -D. virtually
( Key: The correct answer is C.)
Widespread ownership of energy- hungry appliances contribute to this huge growth in enegy consumption.
A.. unique -B. incredible -C. very big -D. noticeable
(Key: The correct answer is C.)
QUESTION TWO
In line 15, the phrase it wasn’t until means :
A. It was before 1954. -B. It was after 1954. -C. It was in the year 1954.
(Key: The correct answer is C.)
WRITTEN COMPOSITION
Your school plans to produce a science magazine on the topic «Save more, consume less.» You have read the text on «Energy Consumption» and you decide to write an article in which you describe what people should do at home and elsewhere to consume less energy and save it for future generations. Write your article in 20 lines.
TEXT SIX (p.76) THE CONSERVATION OF HUMAN RESOURCES
READING COMPREHENSION
QUESTION ONE
What does the writer imply by: “Human beings, as producers, are positive resources” ?
A. They contribute to the country’s economic growth.
B. They produce good teachers.
C. They contribute to the creation of new jobs.
D. They avoid killing themselves in a nuclear war.
(Key: The correct answer is A.)
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QUESTION TWO
In the writer’s opinion, human conservation means :
A. developing medical services for the disabled and the blind.
B. educating people better for new jobs.
C. producing more physical raw materials.
D. contributing to optimal living conditionals for human beings.
(Key: The correct answer is D.)
QUESTION THREE
Choose the one word that best keeps the meaning of the original written in bold in the following sentence from the text:
The conservation of positive human resources begins with health improvement.
A. problems -B. betterment -C. resources -D. organisations.
Key: The correct answer is B.)
QUESTION FOUR
In line 20, what exactly does the phrase “this direction” describe ?
WRITTEN COMPOSITION
What will happen to us when raw materials grow scarce ? Write a letter to your local newspaper in which you express your own views on this topic .
OBJECTIVES
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PREVIEW (p.78)
PREVIEW (p.79)
Go through the preview to make the students aware of the main objectives of the unit. Brainstorm the project work and elicit a list of projects that your students can do. Then make them agree on the project they will carry out.
THINK IT OVER (p.79)
The pictures illustrate the topic of the unit. You are supposed to interact with your students about the pictures to familiarize them with the topic of the unit .
The two pictures illustrate Arab science during the Abbassides period. Refer to page 96 of the textbook to get information about this period. ...
WORDS TO SAY(p.79)
The focus is on word stress. Most of the words are related to science. Read them aloud as your students follow on the page of the textbook. Mark the stress as appropriate before you make your students repeat the pronunciation of the words.
DISCOVERING LANGUAGE (pp.80-83)
BEFORE YOU READ (p.80)
The students interact using the geometrical figure in the textbook. The aim is to revise the comparatives and to make the students familiar with vocabulary related to geometry before moving on to the first activity in the As you read rubric.
YOU YOUR PARTNER
- How many degrees has an angle got? -Less than 90%
- How many degrees has a right angle got? -90%
- How many degrees has an obtuse angle got? -More than 90%
- How many degrees has a straight angle got? -180%
- How many degrees has a reflex angle got? - More than180%
AS YOU READ p.80)
Act. One (p. 80)
The students check their answers to the activity in the Before you read section.
Act. Two (p.81)

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1- Yes, there is. A point in geography has no dimensions (length and thickness) whereas a dot has length, width and thickness.
2- The stress is on have. (A straight line that we draw on paper with pencil have width and thickness)
3- The teacher advises his/her students to revise today’s lesson.
(It is not necessary to ask your students the same questions year after year.)
AFTER READING (p.81--83)
GRAMMAR DESK (p.81)
a- The result clause of sentence 1 is in the future simple.
The result clause of sentence 2 is in the present simple.
b- The condition in sentence 2 is true at any time because it is a general truth.
The condition in sentence 2 is of the domain of prediction. The students
may or may not get good marks.
c- When can replace if in sentences 2 and 4.
2- When two lines cross, the opposite angles are always equal.
4- When there are two points, the shortest distance between them is called
a straight line.
d- The order of the sentences is as follows: (2-4) (1-3)
Refer your students to Grammar Reference n°11, pp.201-202 to check their answers.
PRACTICE (82-83)
Act. One (p.82)
You can devise another activity to differentiate between the zero and the first conditionals.
a- We will get wet if it rains. (prediction)
b-.If you boil water at 100% centigrade, it evaporates. (scientific truth)
c- If you throw water on fire, it will stop burning.
d- If you drink some cool water ,you will soon feel better.
e- She will fall sick if she drinks that polluted water.













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Act. Two (p.82)

A: SentencesB: Functions
1. If you buy two, you will get one free.
2. I will help you do the exercises if you want.
3. If you do not stop making a noise, I will switch off the TV.
4. He will understand if you just explain why you came late.
5. If you touch that wire, you will get an electric shock.
6. If this jacket is the correct size, it will fit me. F. promise
B. offer
D.threat
E. advice
C warning
A. prediction

Act. Three (p.82)
The students will write similar sentences identifying their functions.
Act. Four (p.82)
This is a game. So let the students express freely their own ideas as long as the conditional is used appropriately. This activity will be done by each group separately before doing it as a class.
G1: If you pass your exam, we’ll go to Brazil.
G2: What will we do if we go to Brazil?
G1: If we go to Brazil? We’ll visit Maracana Stadium.
Act. Five (p.83)
Make sure your students understand that will, may and can express different degrees of certainty.
KEY
a- If you fall down, you may break your arm.
b- That boiler can explode if you put too much pressure it.
c- He may hurt himself if he mixes chemical products carelessly.
d- They can fail their mathematics and physics exams if they
don’t learn the theorems.
Other possible sentences:
a-If you drive too fast, you may have an accident.
b-If you spend too much money you can run out of it soon.
c If you overuse your old car, it may break down one day.
d-If you don’t pay your taxes on time, you can have a fine
WRITE IT RIGHT (p.
Brainstorm the topic with your students. The topic is familiar to them. So they

83)
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can add other interesting ideas about water properties.
Like air, water is found almost everywhere. It is familiar to us in different forms, as drinking water, water vapour, ice and snow.
Water has some surprising qualities. For example, most liquids freeze and become denser, but water becomes lighter. When you fill a pan of water, with ice cubes, you note that unmelted particles remain on the surface. The reason is that frozen water is lighter than water in liquid form. When water it becomes ice and it exerts pressure. If you fill a glass bottle and put it in the freezer, the bottle breaks. As the frozen water expands, it exerts pressure on the glass bottle.
Water molecules have a strong attraction to each other. The force of attraction is called cohesion. If you moisten two pocket mirrors and stick them together, you will not be able to pull them apart. The water molecules on the surface of the pocket mirrors attract each other. But it is not difficult at all to separate dry mirrors because ...
SAY IT ALOUD AND CLEAR (p.84 )
Act. One (p.84)
The aim of this activity is twofold: The students will learn about intonation in complex interrogative sentences and the use of the modal should with the conditional if for giving advice. The intonation pattern is indicated by the arrows.
Car owner: What should I doî if the engine fails to start? ì
Mechanic: Check if there is fuel in the tank. î
Car owner: And if there is fuel in the tank. ì
Mechanic: Then you should check î if the battery is all right. î
Act. Two (p.84)
You can suggest different situations to your students wherein they will practise the language exponents suggested in the activity.
Act. Three (p.84)

A) words Pronunciation B) words Pronunciation
Psychology
Democracy
Philosophy
Responsibility
Technological /sak.l.d¯./
/dm.kr.s./
/fl.s.f./
/r.•sp.nsb.l.t./
/•teknlod¯.kl/ Solution
Television
Realistic
Static
aeronautics /slu:©n/
/telv.¯n/
/•r.l.st.k/
/`st.t.k/
/•e.rn.t.ks/


expands,
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The rules for word stress
1; Stress on first syllable
Most two-syllable nouns and adjectives have stress on the first syllable.
2. Stress on last syllable
Most two-syllable verbs have stress on the last syllable.
3.Stress on penultimate syllable (second from the end):
Words ending in ‘ic’ , ‘tion’, and ‘sion
4. Stress on ante-penultimate syllable (third from the end):
Words ending in ‘cy’, ‘ty’, ‘phy’; ‘gy’
5. Polysyllabic words (words with many syllables)
These usually have more than one stress, i.e., primary and secondary stress. Often such words contain a prefix ( as with ‘inter’ and ‘anti’ in international and antibiotic). This is common with many long technical words.
6. Compound words (words with two parts)
If the compound is a noun, the stress goes on the first part : e;G;, greenhouse , blackbird.
If the compound is an adjective, the stress goes on the second part; e.g., bad-tempered, old-fashioned
If the compound is a verb , the stress goes on the second part, e.g., understand, overlook.
WORKING WITH WITH WORDS (p.85)
Act. One (p.85)
The activity can be assigned as a homework. The homework will be checked in class and the final product can be a classroom wall sheet. You can add another activity to consolidate further the use of the suffixes.
Act. Two(p.85)
Crossword puzzle p.85
Across
a-psychology -b-mathematics -c-zoology
d-astronomy -e-biology –f ecology -g-chemisty
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LISTENING AND SPEAKING (86 -88)
DEVELOPING SKILLS (p.86)
Act. One
a- The advert addresses high school graduates.
b- “Open Day” is the day when the university is open for visit by high
school graduates who are interested to join the university.
Act. Two (p.86)
Across
a- The speakers are Jamel and Maya who are high school students.
b- Jamel.
c- He starts as follows: “I feel like going”.
d- Jamel wants to visit the faculty of medicine.
e- Maya wants to visit the faculty of civil engineering because she isn’t
interested in visiting the faculty of medicine.
Down
Physics
YOUR TURN ( p.87)
Go through the tip box to consolidate further the use of the language exponents for asking for and giving advice.
Act. One
Simulate the model dialogue before setting your students to task. Make them use the language exponents and the strategies in the tip box.
WRITE IT UP (p.88)
Act. One (p. 88)
Go through the tip box before you move on to the writing activity proper.
A letter for seeking advice
A suggested letter to an “agony aunt”:
Dear Dr Wells,
I’m writing to you to seek advice. My name is Omar and I’m a secondary school student. I can’t make up my mind about a personal problem.
I’ll sit for the baccalaureate exam soon. I’ll certainly succeed, but my parents are old and are in need of financial help. I would really like to help them. However, If I do so, I will have to give up my dream of becoming a doctor . In short I am in a dilemma. On the one hand, If I decide to help, I will have to renounce to my registration at the university. On the other hand, if I don’t, I’ll feel guilty of not helping my family. I have no one to turn to. What should/can I do ?
Sincerely,
“Miserable”

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Act. Two(p.88)
Brainstorm the topic with your students. They can suggest different pieces of advice. Jot them on the board and let them agree on one of them. For example, they can suggest registration at the UFC (Evening University). This will allow ‘miserable’ the possibility of working during the day. This is one way of working one’s way through college/university.
READING AND WRITING (89-91)
Act. One (p.89)
The students will try to answer the questions in the captions by helping themselves with the illustrations ( figures).
Act. Two (p.89)
a. Yes, it shows the balloons moving away from one and other. The illustration helps in understanding the word “repel” in the text. It also helps to visualise the whole experiment.
b. Yes, I have used my knowledge in physics. Using background knowledge helps in understanding texts.
c. The answer to the first part of the question may be yes or no depending on the students’ background knowledge. As regards the second part of the question, the answer is no.
Act. Three (p. 90)
Fig.2: It illustrates the result of the experiment : unlike charges attract. The balloons are attracted to the rod. They are negatively charged whereas the rod is positively charged.
Act. Four (p.90)
5-Captions:
3: A negatively charged balloon adheres to an uncharged wall.
4: A positively charged balloon also adheres to such a wall.
WRITE IT OUT ( p.91)
Brainstorm the topic with your students. Jot down ideas on the board and then let the students complete the letter in their own way. Pay attention to the layout of the letter.
WHERE DO WE GO FROM HERE ? (p.94)
Skills check
Make your own test to check your students’ performance in the reading and writing skills. A model has been given to you in the previous units.
Figure.
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OBJECTIVES
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PREVIEW (p. 98)
Go through the preview to acquaint the students with the end-of-the unit objectives. Discuss the type of project work your students will carry out.
THINK IT OVER (p.99)
Introduce the topic of the unit by asking some questions about the pictures included in the rubric.
WORDS TO SAY (p. 99)
The focus in this activity is on words containing silent letters. The words are related to the topic of the unit. Read them aloud and make the students repeat the pronunciation of the words.
DISCOVERING LANGUAGE (100-105)
BEFORE YOU READ (p.100)
Interact with your students and elicit answers to the questions attached to the map. You can ask other questions than the ones included in the textbook.
Some possible responses
Question: Where is the epicentre of the earthquake represented on the map?
Answer: A few kilometres off the Indonesian shore.
Question: Which areas are hit by the earthquake/ tidal waves?
Answer: Many countries in the region. The students can list different areas.
Question: How many people died?
Answer: More than one hundred thousand victims. The students can give the number of casualties in each area. The information is on the map.
Question: When did the earthquake happen?
Answer: It occurd on December 26, 2004.
AS YOU READ (100-101)
Act. One (p.100)
The students will check the answers to the questions that they have not checked in Before you read activity.
Act. two (p. 101)
a- The natural phenomenon of Tsunami was little known before December
26, 2004 because the victims did not belong to many nationalities and ethnic groups. Or because it had not been given much publicity before .
b- Tsunami has become one of the most popular Japanese words because of the thousands of T.V. channels which covered the disaster for more than a month.
c- No, it wasn’t the first time that a Tsunami had hit that region. It had already hit China twenty years earlier.
d- The Tsunami of December 26, 2004 was special as its victims did not belong to one nationality or religion.

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AFTER READING (pp.101-102)
Grammar desk (p.101)
1- had hit- had recessed
2- was known-was universal
3- the past perfect tense
4- the simple past tense
Refer the students to the Grammar refernce n° 12 to consolidate further the use of the past perfect and the past simple.
PRACTICE (p. 102)
Both the past simple and past perfect are sometimes possible.
a. My husband and I wept when we (had) heard/heard the terrible news.
b. The world had never known such a disaster before.
c. It was the first time that an earthquake of such a magnitude had hit our country.
d. People had stayed outdoors until the local authorities told them to go back into their homes.
e. Many people had died before the paramedics arrived.
f. Old people told us that our country had already experienced such a catastrophe.
g. By the time the fire brigade arrive, our house had burnt out.
h. I had just switched on TV to watch the news when the flood came in.
I. The house which he had built twenty times earlier was in fire.
Act. Two (p.102)
China- the Chinese ; France- The French ; Wales- The Welsh ;
Japan- The Japanese; Ireland- The Irish; The Spain- The Spaniards
Burma- The Burmese; The Netherlands- The Dutch
Switzerland- The Swiss ; Sweden- The Swede
Act. Three (p.102)
Example
The people from Japan hadn’t suffered much from the tsunami.
The Japanese hadn’t suffered much from the tsunami.