Bài tập bổ trợ Tiếng Anh Lớp 8 Global Success - Unit 7: Environmental protection (Kèm đáp án)

 ecosystems. 
6. The company says it is responsible for the _______________ in the river. 
7. Flying is the biggest contribution to our carbon _______________. 
8. About 60-70 per cent of _______________ growing close to the shore were broken and carried 
ashore.
9. He got a ticket and was fined for _______________. 
10. The project has tried to maintain the biological _______________ of this rainforest.
II. Complete the sentences with the correct form of the verbs given.
 reduce raise practise play turn off
 release avoid volunteer save pick up
1. We all need to do our part to _______________ the planet. 
2. Try to _______________ foods which contain a lot of fat. 
3. Please _______________ the television before you go to bed. 
4. The factory had _______________ a quantity of toxic waste into the sea. 
5. By _______________ the 3 Rs, we can save resources for the future, and reduce the amount of waste. 
6. They will require car makers to _______________ emissions of carbon dioxide by 30%. 
7. I _______________ to help clean up the beach last week. 
8. The volunteers tried to _______________ litter on the rivers. 
9. The campaign has succeeded in _______________ public awareness of the issue. 
10. Schools _______________ an important role in society.
III. Read the text and do the tasks that follow.
When we use 1 _______________ like coal and oil, we put 2 _______________ and other gases into the 
atmosphere. These gases form a layer around the Earth and hold in the heat, so the land and the sea 
gradually become warmer. This is called 3 _______________.
Most scientists believe that global warming causes 4 _______________. There are more storms, floods 
and droughts. Sea levels rise and some 5 _______________may lose their natural habitats.
If we don’t stop global warming, then the problem will get worse. Many countries are trying to reduce 
their carbon emissions. They are developing forms of 6 _______________, for example, wind and solar 
power.
Task 1. Complete the environmental problems with the words given below. VI. Complete each sentence with the correct preposition. 
1. People are becoming more aware ________________ environmental issues. 
2. The new road will cause a loss ________________ the beauty of landscape. 
3. Coal power stations release sulphur dioxide ________________ the atmosphere. 
4. Technology is already playing a key role ________________ environmental protection. 
5. There is a nice play area ________________ the children. 
6. The regions are home ________________ bears and mountain lions. 
7. I’d like to emphasise the importance ________________ protecting endangered species. 
8. Toxic chemicals continue to be dumped ________________ the river. 
9. Orange juice is rich ________________ vitamin C. 
10. The pools provide a rich habitat ________________ water plants.
C. Grammar
• Complex sentences with adverb clauses of time 
I. Choose the correct word to complete each sentence.
1. Before I When / While she is ready, we will leave. 
2. I’ll send you a text message until / as soon as / before I hear from Nam. 
3. Before / After I While she goes, she will turn off all the computers. 
4. I’ll go online while / as soon as / until I get home. 
5. After / Before / While we receive your confirmation email, we will send you a link to download the 
programme. 
6. I have to wait while / before / until my mum comes home. 
7. Before I Until / When Mr. Tan phones, please let me know. 
8. Let’s play with the children after / until / while it is time to go. 
9. He will send them an email before I until I as soon as he arrives in London. 
10. I will give you my reply before / by / this time I leave this afternoon.
II. Match the clauses in the two columns to form complex sentences.
 1. I'll phone you when _____ a. when you see him - he looks so different.
 2. I want to see Mai _____ b. when she got the job.
 3. I'll tell you about our holiday _____ c. when someone phones me.
 4. You won’t recognise him _____ d. when I come back. ___________________________________________________________________________________
3. I won’t return my book to the library. I’ll finish my project. (until) 
___________________________________________________________________________________
4. He was making dinner. The frying pan caught on fire. (while)
___________________________________________________________________________________
5. I finish my study. I will take a walk in the park. (as soon as)
___________________________________________________________________________________
6. She was leaving the shop. She dropped a cartoon of eggs. (when)
___________________________________________________________________________________
7. He had never heard about Halloween. He took part in a Halloween party last year. (before)
___________________________________________________________________________________
8. Shakespeare died in 1616. He had written more than 37 plays. (before)
___________________________________________________________________________________
9. Ms. Hoa won’t answer your email. She has some free time. (until)
___________________________________________________________________________________
10. Susan chews her nails. She feels nervous. (whenever)
___________________________________________________________________________________
D. Reading
I. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
Light pollution is not 1 _____________ serious as water or air pollution. 2 _____________, it is the type 
of pollution that 3 _____________ more in cities than in rural areas. In the past, we could sit out at night 
and 4 _____________ at glittering stars in the sky and light from objects in the outer space. Nowadays, 
cities are covered with lights from buildings, streets, advertising displays, many of which direct the lights 
up into the sky and into many unwanted places. The real problem is that it is very 5 _____________ to 
apply light to almost everything at night. Millions of tons of oil and coal 6 _____________ to produce 
the power to light the sky. Eye strain,7 _____________ of vision and stress are what people may get 
from light pollution. 8 _____________ light at night can harm our eyes and also harm the hormones 
that help US to see things properly.
1. A. more B. as C. much D. only
2. A. Moreover B. However C. Therefore D. Nevertheless cans, you waste more energy than one billion of the world’s poorest people use in one day. Air 
conditioning uses 10 times more energy than a fan and so the pollution it creates is 10 times greater. 
There are mountains of rubbish everywhere, the Arctic ice cap is melting, animals are becoming extinct.
So, what can we do to help? Surprisingly, it’s very easy, but we have to do a little every day, otherwise 
things will never change. Save electricity: turn off lights, computers, laptops, and TVs when you don’t 
need them. Don’t use air conditioning, use a fan instead. One of the best ways to help the planet is to 
ride a bike to school. This will help you save money, get more exercise and, more importantly, you won’t 
pollute the air. Reuse and recycle and you will help the planet in a positive way.
1. Our planet is at risk. ___________
2. People waste a lot of energy. ___________
3. We use too many aluminium cans. ___________
4. Pollution from a fan is 10 times greater than pollution from air conditioning. ___________
5. People use air conditioners more than fans. ___________
6. Rubbish ends up on mountain tops. ___________
7. It’s too late to change the situation. ___________
8. Laptops waste electricity. ___________
IV. Read the text and fill in the gaps with the correct missing words.
 The Ozone Layer
What is the ozone layer?
The ozone layer is like a blanket that surrounds the Earth. Ozone (O3) is the main gas in this layer. 
1 ___________ filters out the harmful rays of the sun allowing only the good rays, which give us light 
and heat, to reach the Earth.
The problem
2 ___________ the 1980s, scientists discovered a large hole 3 ___________ the ozone layer over 
Antarctica. They found that some chemicals people used 4 ___________ make aerosol sprays destroyed 
the ozone layer very quickly.
The effects
As the hole in the ozone layer continues to grow, our planet 5 ___________ be in danger. The 
temperature will rise and the sun’s rays will become very harmful to our skin and eyes. Animals 
6 ___________ plants will die and some species may even become extinct.
The solution from California to Australia in a boat which he called the Plastiki. It was made from 12,5000 plastic 
bottles. The voyage was reported around the world and helped to publicize the problem.
You can help too, by making sure you always put your trash in a bin. Use less plastic if you can. For 
example, use paper bags instead of plastic bags, and don't buy chewing gum. Not many people know 
this, but it’s also made from plastic.
Task 1. In which section can you find these things or people? Write 1, 2 or 3, then write the name of 
the thing or person.
Example: a vehicle which is made from plastic: 1, the Plastiki
1. a living thing which makes oxygen: _________________
2. a sailor who travelled from the us to Australia: _________________
3. a sailor who made an interesting scientific discovery: _________________
4. a food that is made from plastic: _________________
5. another non-biodegradable that isn’t plastic: _________________
6. an animal which looks like a plastic bag: _________________
Task 2. Read the article again. Answer the questions with full sentences.
1. Why was Captain Charles Moore sailing in the Pacific Ocean?
__________________________________________________________________________________
2. How does our plastic trash reach the ocean?
__________________________________________________________________________________
__________________________________________________________________________________
3. What living things sometimes eat plastic trash?
__________________________________________________________________________________
4. How did the voyage on the Plastiki help?
__________________________________________________________________________________
5. How can student readers help?
__________________________________________________________________________________
VI. Read the texts, and do the tasks that follow.
 Clean Up Australia Day
Grace Rees has recently taken part in Clean Up Australia Day. She spent the day collecting drinks 
containers, sweet wrappers and small pieces of paper from a beach near her home.
Grace has been involved in this event for about five years now. ‘I’ve always done it with my school, but A. It’s a great day for the families to meet up to discuss their problems. 
B. It’s a time when people listen to Ian Kiernan’s talk about the environment. 
C. It’s a period of time when people work together to achieve something good.
Task 3. Match the bold words in the text to the definitions.
1. ____________ have clear opinions
2. ____________ groups of people with similar interests
3. ____________ having an influence on
4. ____________ go in a direction
5. ____________ do something to solve a problem
VII. Read the texts, and do the tasks that follow.
 Talking about Green Cities Around the World
More than half the world’s population now lives in cities. The population of cities is getting bigger and 
pollution is getting worse. So which cities are trying to solve this? We asked you which cities you think 
are the greatest.
“I chose Barcelona because I 1 ____________ it’s a great example of a green city. There are lots of buses 
here and people often ride their bike to school or walk. There is also a metro system and cable cars. I 
think that the pollution from cars is a really big 2 ____________, so Barcelona is a green city because it 
encourages people to take other forms of 3 ____________instead of their cars. Also, there are lots of 
parks in the 4 ____________of the city because it strongly believes in keeping the city green and 
healthy. The parks have lots of grass and trees and the air 5 ____________is very good. People 
6 ____________to them to relax, to have lunch or to play sport.” Calen
“Bogota in Colombia is an interesting city because in 2016 it had a week where no cars were allowed 
into the city. There were buses but not many taxis. The city has also had ‘Cycle Sunday’ for over 30 
years. The roads become bicycle paths. I think that’s really cool because then you really think about the 
environment. The idea is that there is less pollution and everyone has to get into town in a ‘green’ way 
- walking, cycling, or bus. The idea was so successful that the mayor decided to create 300km of bicycle 
lanes, which increased bicycle use by five times in the city. There's a good reason for it being called ‘the 
greenest city in Latin America'!” Poppy
“Singapore is a green city in Asia. I think something like 30% of the city is covered by trees and green 
spaces. The trees help to reduce the hot temperature and noise from traffic, giving people who live in 
Singapore a better quality of life. Even the airport is green because there are gardens and a butterfly California has 8 national parks and 20 national forests, more than any other state. Yosemite National 
Park is one of the most visited parks. It is famous for its waterfalls and granite cliffs. Many rock climbers 
go to Yosemite to climb a rock wall named El Capitan. Point Reyes National Seashore is on a peninsula 
north of San Francisco. It is a good place to see harbour seals, sea lions, and many kinds of birds. 
Disneyland in Anaheim is another California tourist attraction. This large amusement park was created 
by cartoonist Walt Disney. It features a fairyland castle, a haunted mansion, a jungle safari, and many 
other attractions and rides.
San Diego has a world-famous zoo. As you wander through its Rain Forest Aviary, brightly coloured 
tropical birds fly by. You will think you are on safari in its outdoor Wild Animal Park, north of San Diego. 
Sea World in San Diego is a great place to watch whales and dolphins perform. California’s sunny 
climate, long coastline, and natural beauty have made it the most popular tourist state in the United 
States.
1. Yosemite National Park ____________. 
A. is famous for its kinds of birds 
B. is one of the 20 national parks in California 
C. interests rock climbers with its El Capitan, a rock wall 
D. is created by a cartoonist