Bài tập Tiếng Anh Lớp 8 - Unit 7: Pollution

 UNIT 7 
 POLLUTION
 A. NEW WORDS, STRUCTURES AND GRAMMAR
 I. New words
affect (v) /əˈfekt/ làm ảnh hưởng algea (n) /ˈỉldʒi:/ tảo
aquatic (adj) /əˈkwỉtɪk/ dưới nước billboard (n) /ˈbɪlbɔːd/ biển quảng cáo 
 ngồi trời
blood pressure (n) /blʌdˈpreʃə(r)/ huyết áp cause (n,v) /kɔːz/ nguyên nhân,
 gây ra
cholera (n) /ˈkɒlərə/ bệnh tả come up (v) nghĩ ra
 with
contaminate (v) /kənˈtỉmɪneɪt/ làm bẩn contaminant (n) /kənˈtỉmɪnənt/ chất gây bẩn
dump (v) /dʌmp/ đổ, vứt, bỏ earplug (n) /ˈɪəplʌɡ/ cái nút tai
effect (n) /ɪˈfekt/ kết quả, ảnh fine (n,v) /faɪn/ tiền phạt, phạt
 hưởng tiền
float (v) /fləʊt/ nổi groundwater (n) /ˈɡraʊndwɔːtə(r)/ nước ngầm Cause Effect
 - because/ since + clause - so + clause 
 Example: Example:
 Because/ Since the water is polluted, the The water is polluted, so the fish are dead.
 fishare dead.
 - due to/ because of + st - to cause st/ to lead to st/ to result in st
 Example: Example:
 The fish are dead due to/ because of the The polluted water causes/ leads to/ results in
 polluted water. the death of the fish.
 - to make sb/ st do st
 Example:
 The polluted water makes the fish die.
2. Conditional sentences type 2
* Form:
 If - clause Main clause
 If + S1 + V (past simple), S2 + would/ could/ might + V –infinitive
* Use: - to describe a thing which is not true or is unlikely to happen in the present or future.
 Example:
 If people didn’t throw rubbish in the street, it would look attractive. (But people throw rubbish 
 in the street.)
B. EXERCISES
 I. Choose the word in each line that has different stress pattern.
 1. A. scientific B. dramatic C. athletic D. domestic
 2. A. national B. chemical C. medical D. informal
 3. A. prehistoric B. economic C. linguistic D. optimistic
 4. A. medical B. hospital C. politic D. electric
 5. A. physical B. horrific C. beautiful D. different
II. Give the correct form of the words given to complete the sentences.
1. The .. of lakes, rivers, oceans or underwater causes water CONTAMINATE pollution humans and animals.
 IV. Combine the sentences in each pair into a new sentence that shows a cause – effect 
 relationship. Use the words in brackets.
 1. Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. 
 (because)
 ..
 .
2. The environment is polluted. Birds leave their habitats and plants die. (makes)
 ..
 .
3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so)
 ..
 .
4. The food is contaminated. People’s health is poor. (results in)
 ..
 .
5. Factories release fumes. The air people breathe gets polluted. (due to)
 ..
 .
V. Put the verbs in brackets into the correct form to complete the sentences.
1. If the local people drink the contaminated water, they (have)........................health problems.
2. If there were more trees in this area, the air (be)........................fresher.
3. All the aquatic animals (die)........................if people don’t stop dumping sewage into the
 lake.
4. Global warming (not happen) ........................if there weren’t too much carbon dioxide in the
 atmosphere.
5. If the sun (shine)......................., we will walk to the mountain.
6. If people (stop)........................digging the street, there wouldn’t be noise pollution in this
 area.
 7. People use a lot of cars and motorcycles. If people (reduce)........................the use of motor
 vehicles, there (be)........................less serious air pollution. 1. A. more B. as C. much D. only
 2. A. Moreover B. However C. Therefore D. Nevertheless
 3. A. happen B. occur C. occurs D. is occurred
 4. A. watch B. see C. spend D. gaze
 5. A. waste B. wastes C. wasting D. wasteful
 6. A. used B. using C. is used D. are used
 7. A. lose B. lost C. loss D. losing
 8. A. Very much B. Too much C. Too many D. So many
 VIII. Read the passage and decide whether the statements are True (T) or False (F).
 There are many causes that lead to water pollution. One main cause of this issue is waste 
water coming from many factories and then being directly pulled out into water bodies, 
especially into rivers or seas without any treatment because this is the most convenient way of 
disposing waste water. Industrial waste consists of some kinds of chemical substances such as 
sulphur, which is harmful for marine life. Lead is known as the main reason for cancer disease. 
Cancer has become a popular disease in several communes which are called “cancer villages”. 
Another cause is the awareness of citizens, people always use water for many purposes and then 
they dump waste water or garbage directly into rivers, canals and ponds and so on. In 2004, 
because of a bird flu outbreak in Viet Nam, people threw poultry to water body that made water 
highly polluted.
 Statements T F
 1. Waste water from many factories which is dumped into water bodies directly ☐ ☐
 causes water pollution.
 2. Dumping waste directly into water is the most convenient way of disposing waste ☐ ☐
 water.
 3. Sulphur is believed the main reason for cancer. ☐ ☐
 4. Cancer villages occurred in 2004. ☐ ☐
 5. Due to lack of awareness, people poisoned water with dead poultry when there was ☐ ☐
 a bird flu outbreak in 2004.
IX. Complete the second sentence so that it has similar meaning to the first one.