Bài tập bổ trợ Tiếng Anh Lớp 11 Global Success - Unit 5: Global warming (Có đáp án)

 The biggest threat to life on Earth comes from 6 __________ . Rich 7 __________ in the West have been 
burning 8 __________ such as coal, oil and gas for about 150 years, throwing out large quantities of the 
9 __________ into the atmosphere. The carbon dioxide traps the heat from the sun and causes the Earth 
and the atmosphere to get warmer. This is called the 10 __________ . The problem has been made worse 
by deforestation, the process of clearing forests in order to create croplands or cattle ranches.
III. Fill in each blank with the correct word below. There are three extra words.
 droughts famine sea life weather
 energy flooding extreme conditions forest
 The Expected Effects of Global Warming
• A rise in sea levels, causing 1 __________ in coastal areas.
• Higher sea surface temperatures, endangering 2 __________ .
• The shrinking of glaciers, leading to a decrease in fresh water for rivers and less 3 __________ 
 production.
• A loss of tropical forests, an increase in arid lands, more 4 __________ fires, and a loss of animal and 
 plant species.
• A decrease in agricultural yields, leading to 5 __________ .
IV. Fill in each blank in the passage with the correct word I phrase below.
 energy use endangered species carbon footprint climate change
 sea levels alternative sources greenhouse gases carbon emissions
Why is global warming a problem? High levels of 1 __________ in the atmosphere lead to 2__________ 
. The oceans and seas are getting warmer and the polar ice caps are melting. This causes the rise in 3 
__________ , which threatens low coastal regions and islands. Furthermore, the weather is becoming 
more unpredictable, with severe storms and floods, or unexpected droughts. Another effect of global 
warming is a rise in the number of 4 __________ . Many animals and plants could become extinct if 
their natural habitats are changed.
What can we do about it? Scientists now agree that there is an urgent need to cut down on 5__________ 
across the world. Moreover, we need to develop 6 __________ of energy, such as wind, wave or solar 
power.
For individuals, being a vegetarian reduces your 7 __________ (the amount of emissions caused one 
person’s lifestyle) because it can reduce 8 __________ .
V. Match the words 1-5 with a-e. Write the answers in the blanks.
1. global _______________________ a. species
2. endangered _______________________ b. energy
3. solar _______________________ c. footprint
4. wind _______________________ d. warming
5. carbon _______________________ e. farm
VI. Complete the sentences with the words in Exercise V.
1. I don’t want to live near a __________ . I think the turbines are ugly.
2. Our house gets electricity from __________ . The special panels are on the roof.
3. The world’s climate is getting hotter because of __________ .
4. Your __________ indicates how much CO2 your lifestyle creates. 8. __________ with uranium, Marie Curie discovered two new elements, radium and polonium.
II. Reduce the adverb clause to a present participle or past participle clause.
1. Since he opened his new business, he has been working 16 hours a day.
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2. I turned off the lights before I left the room.
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3. While he was herding his goats in the mountains, an Ethiopian discovered the coffee plant more than 
1,200 years ago.
__________________________________________________________________________________
4. Before they marched into battle, ancient Ethiopian soldiers ate a mixture of raw coffee beans and fat 
for extra energy.
__________________________________________________________________________________
5. After I met the film star in person, I understood why she was so popular.
__________________________________________________________________________________
6. I searched through all my pockets, so I found my keys.
__________________________________________________________________________________
7. When it was first brought to Europe, the tomato was thought to be poisonous.
__________________________________________________________________________________
8. Since it was first imported into Australia many years ago, the rabbit has become a serious pest because 
it has no natural enemies there.
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III. Reduce the adverb clause to a present participle clause if possible.
1. After the musician stopped playing, the audience stood up and clapped enthusiastically.
__________________________________________________________________________________
2. Since David was driving to work in the rain, his car got a flat tyre.
__________________________________________________________________________________
3. While David was driving to work, he had a flat tyre.
__________________________________________________________________________________
4. Tom worked hard in the garden all afternoon, so he took a shower and then went to the cinema with 
his friends.
__________________________________________________________________________________
5. Before a friend tries to do something hard, an American may say ‘Break a leg! ’ to wish him or her 
good luck.
__________________________________________________________________________________
6. Lan always straightens her desk before she leaves the office at the end of the day.
__________________________________________________________________________________
7. Before Bob left on his trip, his manager gave him a big raise.
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8. Mai got all the ingredients, so she made a delicious chicken curry for her friends. I. the passengers walked back to the ticket counter.
 J. the workers told the assistant manager about the problem.
5D. Reading
I. Read the blog, and then do the tasks that follow.
 Global Warming
Every day, light from the sun warms the earth, causing it to release heat. Gases in the earth’s atmosphere 
- mostly carbon dioxide (CO2) - stop some of the heat from escaping into space so that the earth is kept 
warm. For the past 10,000 years, this heat was kept the earth at regular temperatures. However, over the 
past 100 years, scientists have noticed higher levels of carbon dioxide. More carbon dioxide means more 
heat, which means higher temperatures on Earth. We’ve already seen some consequences of global 
warming. Nine of the ten warmest years in history have occurred in the last fifteen years. Ground that 
has been frozen since the last Ice Age is melting. There are more hurricanes and disastrous storms than 
ever before.
So, what do you think is causing global warming? What, if anything, should we do about it? Post your 
comment.
Gloria: The earth is warmer by only I degree Fahrenheit. Talk to me when it’s 7 degrees warmer.
Sam: Climate has changed many times in the history of our planet. It is only natural. Let’s not lose sleep 
over it, alright?
Kris: I totally disagree! Climate change is natural, but what is happening today is not! Global warming 
is the fault of everyone who drives a car, flies on a plane, builds factories, and cuts trees. All of that 
creates more CO2. We must stop damaging our planet for future generations. We must urge our 
government leaders to control industries that harm the air.
Winston: The Intergovernmental Panel on Climate Change (IPCC) reported after reviewing the 
scientific research that it is more than 90% certain that humans are causing global warming. Gases from 
cars and factories are causing temperatures to rise. We need to do something before it’s too late!
Linda: 90% certain leaves 10% uncertain. The IPCC has lots of errors and is exaggerated. It isn’t only 
the cars and factories that are causing global warming. What about the changes in the sun’s brightness 
during its 11-year solar cycle? It causes temperatures to increase. Erupting volcanoes can produce lots 
of carbon dioxide, too.
Task 1. Answer the questions.
1. What is global warming?
________________________________________________________________________________
2. What are the effects of global warming?
________________________________________________________________________________
3. What did the IPCC’s report say?
________________________________________________________________________________
4. What are the two possible human causes of global warming?
________________________________________________________________________________
5. What are the two possible natural causes of global warming?
________________________________________________________________________________ increased more than one degree Fahrenheit since the late 1800s. Most of that increase has occurred over 
just the past three decades.
 We are overloading our atmosphere with carbon dioxide, which traps heat and steadily drives up 
the planet’s temperature. Carbon dioxide comes from the fossil fuels we bum for energy, such as coal, 
natural gas, and oil, and the loss of forests due to deforestation, especially in the tropics.
 Within the scientific community, there is no debate. Most scientists agree that global warming is 
happening and that human activity is the primary cause.
 Global warming is already having significant and costly effects - and these consequences will only 
intensify as the planet’s temperature continues to rise. Global warming is accelerating the rate of sea 
level rise and dramatically increasing coastal flooding risks. Climate change has significant effects for 
our health, including increased air pollution and a longer and more intense allergy season.
 We must significantly reduce the heat-trapping emissions we are putting into the atmosphere. As 
individuals, we can help by taking action to reduce our carbon footprint. Tropical deforestation accounts 
for about 10 percent of the world’s heat-trapping emissions. Reducing tropical deforestation can 
significantly lower global warming emissions and plays an integral role in a long-term solution to global 
warming.
 Sometimes it is difficult to achieve meaningful solutions to global warming because misinformation 
about the truth of global warming misleads and confuses the public and makes it more difficult to carry 
out effective solutions.
1. Too much carbon dioxide in the atmosphere leads to the rise in the Earth’s surface temperatures. 
 _________
2. The Earth’s surface temperature has increased one degree Fahrenheit in the past three decades. 
 _________
3. There is no debate about human activity in the scientific community. _________
4. The more powerful global warming is, the higher Earth’s temperature will rise. _________
5. Global warming results in the sea level rise and coastal flooding risks. _________
6. Climate change contributes to illnesses and death, related to allergy. _________
7. Tropical deforestation is the main cause of greenhouse gas emissions. _________
8. There are some doubts about the truth of global warming, which makes it difficult to fight against 
global warming. _________
IV. Read the text, and then do the tasks that follow.
 Choose Clean Energy and Help Curb Global Warming
Fossil fuels such as oil, coal, and natural gas provide energy for our cars and homes, but increase the 
amount of carbon dioxide in the air, contributing to global warming. However, there are choices we can 
make that can lessen their negative impact on the environment.
Get moving - Take good care of your car and keep your tires properly inflated with air. You will use 
less gasoline and save money. Better yet, skip the drive and walk, take public transportation, or ride a 
bicycle when you can.
Upgrade - Replace your old refrigerator or air-conditioner with a new energy-efficient model. Not only 
will you save money on your electric bill, but you’ll contribute to cutting back on the pollution that 
causes global warming. both covered more ground and 5 __________ for longer. Their increased size and frequency mean that 
firefighters have a much harder time putting them 6 __________ . What is more, there is a 7 __________ 
relationship between the warmer temperatures and the early arrival of spring. When the snow disappears, 
forest 8 __________ become drier and stay dry for longer, which increases the chance that they might 
catch fire.
All over the world, temples, ancient monuments and other statues stand as reminders of past 
civilisations, which until now have survived the tests of time. However, the immediate effects of global 
warming may finally destroy them. Rising sea and extreme weather have the potential to damage these 
unique sites. Floods caused by global warming have already damaged Sukhothai - the 600-year-old site 
which was the ancient capital of a Thai kingdom.
The average climber probably wouldn’t notice, but the Alps and other mountain ranges have experienced 
gradual growth over the past century or so thanks to the melting of the glaciers on top of them. For 
thousands of years, the weight of these glaciers has pushed the mountains down into the Earth, squeezing 
them down like a cushion. As the glaciers melt, this weight is decreasing, and the surface is slowly rising. 
Global warming speeds up the melting of these glaciers, so the mountains are growing faster.
One hundred and twenty-five lakes in the Arctic have disappeared in the past few decades, giving 
support to the idea that global warming is working extremely fast nearest the Earth’s poles. Research 
into the missing water points to the probability that frozen earth underneath lakes warmed up and became 
soft - or thawed. As this normally-frozen ground thaws, the water in the lakes can escape through the 
soil, draining the lakes. One researcher compared it to pulling the plug out of the bath.
While melting ice in the Arctic might cause problems for plants and animals further south, it’s creating 
a bright and sunny situation for Arctic vegetation. Arctic plants are usually trapped in ice for most of the 
year. Now in spring, when the ice melts earlier, the plants start growing quickly. There has been an 
explosion of plant growth in the Arctic in recent decades.
Have those itchy eyes and sneezing fits that bother you every spring got worse in recent years? Global 
warming may be partly to blame for that, too. Over the past few decades, an increasing number of people 
have started suffering from seasonal allergies and asthma. Just like in the Arctic, early springs mean 
plants come into flower more quickly, so your allergy season can last longer. Better buy some more 
tissues.
Task 1. Read the first two paragraphs and decide which answer (A, B, C or D) best fits each gap.
1. A. melting B. dropping C. fading D. dissolving
2. A. heights B. measures C. lengths D. levels
3. A. causing B. making C. resulting D. proving
4. A. just B. only C. really D. alone
5. A. stayed B. taken C. lasted D. rested
6. A. off B. out C. over D. down
7. A. clear B. straight C. simple D. clean
8. A. fields B. parts C. places D. areas
Task 2. Answer the questions about the text.
1. Why do early springs make forest fires more likely?
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2. What caused the damage to an ancient site in Thailand?