Read the following leaflet and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12. 

Our natural resources will be ___(7)___ unless we save the energy ___(8)___.

Follow these tips to avoid wasting energy:

● Use a timer on your air-conditioning system. Just set air conditioning to come only ___(9)___.

● Close your curtains to stop heat escaping ___(10)___ the windows.

● Don’t leave the apps on your phones or laptops ___(11)___ unnecessarily.

● If you have a hot water tank, set the cylinder thermostat to 60ºC (140ºF).

● Don’t use your ___(12)___ every day. Hang out washing outside during nice weather.

Read the following passage about Heat Transfer in the Atmosphere and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Because the low latitudes of the Earth, the areas near the equator, receive more heat than the latitudes near the poles, and because the nature of heat is to expand and move, heat is transported from the tropics to the middle and high latitudes. Some of this heat is moved by winds and some by ocean currents, and some gets stored in the atmosphere in the form of latent heat.

(I) The term “latent heat” refers to the energy that has to be used to convert liquid water to water vapor. (II) We know that if we warm a pan of water on a stove, it will evaporate, or turn into vapor, faster than if it is allowed to sit at room temperature. (III) We also know that if we hang wet clothes outside in the summertime, they will dry faster than in winter, when the temperature is lower. The energy used in both cases to change liquid water to water vapor is supplied by heat - supplied by the stove in the first case and by the Sun in the latter case. This energy is not lost. (IV)  It is stored as vapor in the atmosphere as latent heat. Eventually, the water stored as vapor in the atmosphere will condense to liquid again, and the energy will be released to the atmosphere.

In the atmosphere, a large portion of the Sun’s incoming energy is used to evaporate water, primarily in the tropical oceans. Scientists have tried to pin down this proportion of the Sun’s energy. By analyzing temperature, water vapor, and wind data around the globe, they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the Sun’s energy. Once this latent heat is stored within the atmosphere, it can be transported, primarily to higher latitudes, by prevailing, large - scale winds. Or it can be transported vertically to higher levels in the atmosphere, where it forms clouds and subsequent storms, which then release the energy back to the atmosphere.

The phrase " pin down " in paragraph 2 could best be replaced by:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 33 to 40.

Air pollution is a significant environmental issue that affects millions of people worldwide. It results from various sources, including industrial emissions, vehicle exhaust, and the burning of fossil fuels. [I] Among the most harmful pollutants are fine particulate matter (PM2.5), carbon monoxide, sulfur dioxide, and nitrogen oxides. These pollutants not only degrade air quality but also have serious health consequences, such as respiratory diseases, cardiovascular problems, and even premature death. [II]

In major cities, traffic congestion plays a critical role in worsening air pollution. The high concentration of vehicles, particularly those running on diesel fuel, releases large amounts of pollutants into the atmosphere. [III] Additionally, industrial activities in urban areas contribute to the problem by emitting harmful gases and chemicals. [IV]

Governments and environmental organizations have been implementing various measures to combat air pollution. These include promoting the use of renewable energy, encouraging public transportation, and imposing stricter emission regulations on industries. Moreover, advancements in technology have led to the development of electric vehicles and air purification systems, which help reduce pollution levels. However, despite these efforts, achieving clean air remains a global challenge that requires cooperation from all sectors of society.

The phrase critical role in paragraph 2 is OPPOSITE in meaning to _____.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct arrangement of the sentences to make a meaningful paragraph/letter in each of the following questions.

a.  Finally, would you mind telling me if there are native German-speaking teachers at your language centre?

b.   First, could you please let me know whether there are German courses at your language centre?

c.  Dear Sir or Madam, I am writing to ask for some information about the language courses at your language centre.

d.   I look forward to hearing from you.

e.   Yours faithfully,

f.   Next, I would also like to know how long the course for beginners lasts and how often classes take place.

Read the following passage about climate change and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

           Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. This phenomenon is largely driven by human activities, particularly the burning of fossil fuels such as coal, oil, and gas, which increase the concentration of greenhouse gases in the atmosphere. They trap heat from the sun, leading to global warming and causing severe weather events, such as hurricanes, floods, and droughts, to become more frequent and intense. Climate change impacts nearly every region of the world and affects the natural environment, economies, and human health.

           As temperatures rise, polar ice caps and glaciers are melting at alarming rates, contributing to rising sea levels. Coastal regions face an increased risk of flooding, and many low-lying islands are at risk of disappearing entirely. Additionally, higher temperatures lead to the warming of oceans, affecting marine ecosystems and causing coral bleaching, which threatens biodiversity and the livelihoods of millions of people who depend on fishing.

            [I] The consequences of climate change are not just environmental; they also affect human society in significant ways. [II] Changes in weather patterns disrupt agriculture, leading to crop failures and food shortages in vulnerable regions. [III] Furthermore, climate change is linked to health issues such as respiratory diseases, heat strokes, and the spread of diseases carried by insects, like malaria and dengue fever. [IV]

           To combat climate change, a coordinated global effort is necessary. Governments, organizations, and individuals all have roles to play in reducing greenhouse gas emissions and promoting sustainable practices. Shifting to renewable energy sources, such as wind, solar, and hydropower, is essential. Additionally, conserving forests and investing in technology that captures carbon dioxide from the atmosphere can help mitigate the effects of climate change and pave the way for a healthier planet.

Which of the following best summarizes paragraph 4?

Read the following leaflet and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12.

Here are some ways to help reduce global warming. Which of these do you regularly do?

Don't use private cars. Your willingness to walk or cycle to nearby places can help reduce the emissions of carbon dioxide and also reduce your own carbon footprint. Use public transport. If travelling long distances, then use public transport rather than your car. However, if you carpool (travel together with a group of people in one car), then you are choosing to help ___(7)___ environment. If we travel with ___(8)___, we will use less petrol.

Make a decision to reduce, recycle, and reuse. Reduce waste by buying reusable products. Don't forget to recycle plastics, glass, and paper products. You may wish to reuse some of your old items to ___(9)___, too. Take unneeded ___(10)___ to a recycling centre.

Buy local goods. When you buy goods ___(11)___ from far-away places, it takes a lot of energy to ___(12)___ them to your area. This means that if you don't buy local food and products, then more emissions of carbon dioxide will happen during the transportation process.

(Adapted from English Discovery)

Read the following passage about climate change and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

           Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. This phenomenon is largely driven by human activities, particularly the burning of fossil fuels such as coal, oil, and gas, which increase the concentration of greenhouse gases in the atmosphere. They trap heat from the sun, leading to global warming and causing severe weather events, such as hurricanes, floods, and droughts, to become more frequent and intense. Climate change impacts nearly every region of the world and affects the natural environment, economies, and human health.

           As temperatures rise, polar ice caps and glaciers are melting at alarming rates, contributing to rising sea levels. Coastal regions face an increased risk of flooding, and many low-lying islands are at risk of disappearing entirely. Additionally, higher temperatures lead to the warming of oceans, affecting marine ecosystems and causing coral bleaching, which threatens biodiversity and the livelihoods of millions of people who depend on fishing.

            [I] The consequences of climate change are not just environmental; they also affect human society in significant ways. [II] Changes in weather patterns disrupt agriculture, leading to crop failures and food shortages in vulnerable regions. [III] Furthermore, climate change is linked to health issues such as respiratory diseases, heat strokes, and the spread of diseases carried by insects, like malaria and dengue fever. [IV]

           To combat climate change, a coordinated global effort is necessary. Governments, organizations, and individuals all have roles to play in reducing greenhouse gas emissions and promoting sustainable practices. Shifting to renewable energy sources, such as wind, solar, and hydropower, is essential. Additionally, conserving forests and investing in technology that captures carbon dioxide from the atmosphere can help mitigate the effects of climate change and pave the way for a healthier planet.

The word "They" in paragraph 1 refers to ________.

Read the following passage about the urban shift and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

[I] Landslides are a significant environmental challenge in the northern mountainous provinces of Vietnam, partiCularly during the rainy season. The region, characterized by steep slopes and heavy rainfall, is prone to this natural disaster, which poses serious threats to both the local population and infrastructure. [II] ln recent years, numerous landslides have occurred, often triggered by prolonged periods of heavy rain, resulting in devastating impacts on communities and livelihoods.

The mountainous terrain, combined with deforestation and improper land use, exacerbates the risk of landslides. [III] As farmers clear forests for agriculture, the natural vegetation that stabilizes the soil is lost, making slopes more susceptible to erosion. When heavy rains saturate the soil, it can quickly become unstable, leading to sudden and destructive landslides. [IV]

In response to this growing threat, local authorities and environmental organizations are taking proactive measures to mitigate the risks associated with landslides. Efforts include reforestation projects, improving drainage systems, and raising public awareness about safe practices du ring the rainy season. Additionally, advanced monitoring systems are being implemented to provide early warnings, allowing communities to evacuate before a disaster strikes.

Despite these efforts, the challenges remain significant, and ongoing education and support for sustainable land management practices are crucial for reducing the incidence and impact of landslides in northern Vietnam.

The phrase susceptible to in paragraph 3 is 0 PPOSITE in meaning to _____

Read the following passage about climate change and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

           Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. This phenomenon is largely driven by human activities, particularly the burning of fossil fuels such as coal, oil, and gas, which increase the concentration of greenhouse gases in the atmosphere. They trap heat from the sun, leading to global warming and causing severe weather events, such as hurricanes, floods, and droughts, to become more frequent and intense. Climate change impacts nearly every region of the world and affects the natural environment, economies, and human health.

           As temperatures rise, polar ice caps and glaciers are melting at alarming rates, contributing to rising sea levels. Coastal regions face an increased risk of flooding, and many low-lying islands are at risk of disappearing entirely. Additionally, higher temperatures lead to the warming of oceans, affecting marine ecosystems and causing coral bleaching, which threatens biodiversity and the livelihoods of millions of people who depend on fishing.

            [I] The consequences of climate change are not just environmental; they also affect human society in significant ways. [II] Changes in weather patterns disrupt agriculture, leading to crop failures and food shortages in vulnerable regions. [III] Furthermore, climate change is linked to health issues such as respiratory diseases, heat strokes, and the spread of diseases carried by insects, like malaria and dengue fever. [IV]

           To combat climate change, a coordinated global effort is necessary. Governments, organizations, and individuals all have roles to play in reducing greenhouse gas emissions and promoting sustainable practices. Shifting to renewable energy sources, such as wind, solar, and hydropower, is essential. Additionally, conserving forests and investing in technology that captures carbon dioxide from the atmosphere can help mitigate the effects of climate change and pave the way for a healthier planet.

Which of the following best paraphrases the underlined sentence in paragraph 4?

Read the following passage about the urban shift and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40. 

Pollution and Its Global Impact

[I] Pollution is one of the most pressing issues in the modern world, affecting not only the environment but also public health and global economies. [II] While urbanization and industrialization have brought significant progress, they have also introduced severe environmental challenges. [III] Reducing pollution requires a comprehensive approach that includes public awareness, technological innovation, and stricter environmental policies. [IV]

Air pollution is among the most widespread forms of environmental degradation. It stems from emissions by vehicles, factories, and deforestation, leading to harmful effects on both human health and the climate. According to the United Nations, fine particulate matter (PM2.5) causes millions of premature deaths annually. Water pollution, caused by untreated waste, agricultural runoff, and oil spills, destroys marine ecosystems and threatens human water supplies. Similarly, soil pollution—often overlooked—results from pesticides, heavy metals, and industrial waste, severely impacting agriculture and biodiversity.

While governments worldwide have implemented measures to combat pollution, individual action is equally essential. Reducing plastic consumption, opting for sustainable transportation, and recycling waste can significantly lessen environmental harm. Moreover, industries must adopt cleaner production methods, such as renewable energy and green technology. However, these solutions are effective only when paired with robust educational campaigns that encourage people to understand and address pollution’s consequences.

Despite these efforts, the problem persists, especially in developing nations, where economic constraints hinder environmental policies and waste management systems. At the same time, wealthier countries often export waste to poorer regions, exacerbating the issue. Experts stress that international cooperation is essential to tackle pollution on a global scale. Unless all nations contribute, the planet’s resources and ecosystems may face irreversible damage.

Which of the following best summarizes the passage?

Read the following passage about typhoon Yagi and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22. 

After hitting the Philippines, where it killed more than a dozen people, ___(18)___ and shortly after parts of Vietnam, Thailand, Myanmar and Laos. Nearly a week since it made landfall, many farms and villages in northern parts of Vietnam and neighboring Thailand remain under water as ___(19)___ with severe flooding and the looming threat of landslides.

In Vietnam, the death toll has risen to at least 226 as a result of the storm and the landslides and flash floods it triggered, the government’s disaster agency said Thursday, according to Reuters. ___(20)___.

At least 33 people have died across Thailand since mid-August ___(21)___, with at least nine deaths this week after Yagi, Reuters reported citing the local government.

Storms are being made more intense and deadlier by the warming ocean, scientists have long warned. While developed nations bear a greater historical responsibility for the human-induced climate crisis, ___(22)___.

(Adapted from CNN)

Read the following passage about typhoon Yagi and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22. 

After hitting the Philippines, where it killed more than a dozen people, ___(18)___ and shortly after parts of Vietnam, Thailand, Myanmar and Laos. Nearly a week since it made landfall, many farms and villages in northern parts of Vietnam and neighboring Thailand remain under water as ___(19)___ with severe flooding and the looming threat of landslides.

In Vietnam, the death toll has risen to at least 226 as a result of the storm and the landslides and flash floods it triggered, the government’s disaster agency said Thursday, according to Reuters. ___(20)___.

At least 33 people have died across Thailand since mid-August ___(21)___, with at least nine deaths this week after Yagi, Reuters reported citing the local government.

Storms are being made more intense and deadlier by the warming ocean, scientists have long warned. While developed nations bear a greater historical responsibility for the human-induced climate crisis, ___(22)___.

(Adapted from CNN)

Read the following leaflet/notice and choose the option that best fits each of the numbered blanks from 7 to 12.

TRANSFORMING FARMING WITH VERTICAL FARMING!

What is Vertical Farming?

Vertical farming is an innovative way of growing crops on vertically stacked layers, (7) __________ traditional horizontal land. By using less space, this (8) __________ allows farmers to produce more food, even in areas where traditional farming is impossible.

How Does Vertical Farming Work?

Vertical farms use advanced hydroponic systems that allow crops to grow in (9) __________ stacked layers. These systems control light, temperature, water, and humidity to create the perfect environment for plants. With natural sunlight and minimal resources, this (10) __________ reduces waste and helps grow crops year-round.

Why is Vertical Farming Important?

Vertical farming can help solve many agricultural challenges. It allows food (11) __________ in urban areas, reducing the need for long-distance transportation. It also helps farmers produce crops without worrying about climate change or weather conditions, (12) __________ a reliable food source.

Join the Green Revolution

Vertical farming is the future of agriculture. Start growing smarter, not harder!

Read the following passage about plastic bags and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 23 to 30.

Plastic bags are used by everybody. From a vegetable vendor to a designer store, everyone seems to use them. Even though they are one of the modern conveniences that we seem to be unable to do without, they are responsible for causing pollution, killing wildlife, and using up the precious resources of the Earth.  But, most of us are blissfully unaware of the outcomes that are occurring and will take place in the future.

Every once in a while, the government passes out an order banning store owners from providing plastic bags to customers for carrying their purchases. About a hundred billion plastic bags are used every year in the U.S. alone. The problem is further worsened by the developed countries shipping off their plastic waste to developing countries like India.

Once they are used, most bags go into landfills. Each year, more and more bags are ending up littering the environment. Once they become litter, plastic bags find their way into our waterways, parks, beaches, and streets. About 100,000 animals, such as dolphins, turtles, whales, penguins are killed every year due to these bags. And worse, the ingested plastic bag remains intact even after the death and decomposition of the animal. One of the worst environmental effects is that they are non-biodegradable. No one will live so long to witness the decomposition of plastic!

A tote bag can make a good substitute for carrying groceries and the shopping. You can keep the bag with the cashier, and then put your purchases into it instead of the usual plastic bag. Recycling the bags you already have is another good idea. Plastics are not only non-biodegradable, but are one of the major pollutants of the sea. For a clean and green environment, try to use alternatives to plastic whenever and wherever possible.

What does the word “them” in the first paragraph refer to?

Read the following passage about climate change and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

           Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. This phenomenon is largely driven by human activities, particularly the burning of fossil fuels such as coal, oil, and gas, which increase the concentration of greenhouse gases in the atmosphere. They trap heat from the sun, leading to global warming and causing severe weather events, such as hurricanes, floods, and droughts, to become more frequent and intense. Climate change impacts nearly every region of the world and affects the natural environment, economies, and human health.

           As temperatures rise, polar ice caps and glaciers are melting at alarming rates, contributing to rising sea levels. Coastal regions face an increased risk of flooding, and many low-lying islands are at risk of disappearing entirely. Additionally, higher temperatures lead to the warming of oceans, affecting marine ecosystems and causing coral bleaching, which threatens biodiversity and the livelihoods of millions of people who depend on fishing.

            [I] The consequences of climate change are not just environmental; they also affect human society in significant ways. [II] Changes in weather patterns disrupt agriculture, leading to crop failures and food shortages in vulnerable regions. [III] Furthermore, climate change is linked to health issues such as respiratory diseases, heat strokes, and the spread of diseases carried by insects, like malaria and dengue fever. [IV]

           To combat climate change, a coordinated global effort is necessary. Governments, organizations, and individuals all have roles to play in reducing greenhouse gas emissions and promoting sustainable practices. Shifting to renewable energy sources, such as wind, solar, and hydropower, is essential. Additionally, conserving forests and investing in technology that captures carbon dioxide from the atmosphere can help mitigate the effects of climate change and pave the way for a healthier planet.

Which of the following best summarizes the passage?

Mark the letter A, B, C, or D on your answer sheet to indicate the correct arrangement of the  sentences to make a meaningful paragraph/letter in each of the following questions.  

f. For example, as her academic record attests, Ms. Francesca has maintained an A grade average across the board during her study here at Fallow High School.

d. Secondly, Francesca has distinguished herself as an incredible young writer through her work in my classes as well as in her creative and essay writing in English and Literature. 

e. In addition to having firsthand knowledge of Francesca’s academic commitment and talent. I feel certain that you will be just as impressed with Francesca as I am.

c. Dear, Sir/Madam, I am writing this letter to recommend Francesca Stevens for the Linda Williams Scholarship. I was her Social Studies and History teacher and have closely followed her academic progress during past three years.

a. Firstly, as a student, Francesca demonstrated a love of learning and the level of commitment necessary to succeed in college and beyond. I am happy to be able to provide this recommendation for such a deserving student.

b. Please do not hesitate in contacting me with any questions that you may have, and let me know if I can provide any additional information in support of this deserving student. You may reach me at helenb@school.com.

Regards,

Helen Bridgeman

Read the following passage about the urban shift and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40. 

Pollution and Its Global Impact

[I] Pollution is one of the most pressing issues in the modern world, affecting not only the environment but also public health and global economies. [II] While urbanization and industrialization have brought significant progress, they have also introduced severe environmental challenges. [III] Reducing pollution requires a comprehensive approach that includes public awareness, technological innovation, and stricter environmental policies. [IV]

Air pollution is among the most widespread forms of environmental degradation. It stems from emissions by vehicles, factories, and deforestation, leading to harmful effects on both human health and the climate. According to the United Nations, fine particulate matter (PM2.5) causes millions of premature deaths annually. Water pollution, caused by untreated waste, agricultural runoff, and oil spills, destroys marine ecosystems and threatens human water supplies. Similarly, soil pollution—often overlooked—results from pesticides, heavy metals, and industrial waste, severely impacting agriculture and biodiversity.

While governments worldwide have implemented measures to combat pollution, individual action is equally essential. Reducing plastic consumption, opting for sustainable transportation, and recycling waste can significantly lessen environmental harm. Moreover, industries must adopt cleaner production methods, such as renewable energy and green technology. However, these solutions are effective only when paired with robust educational campaigns that encourage people to understand and address pollution’s consequences.

Despite these efforts, the problem persists, especially in developing nations, where economic constraints hinder environmental policies and waste management systems. At the same time, wealthier countries often export waste to poorer regions, exacerbating the issue. Experts stress that international cooperation is essential to tackle pollution on a global scale. Unless all nations contribute, the planet’s resources and ecosystems may face irreversible damage.

The word constraints in the final paragraph most likely means:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

The global average temperature also set a new record in 2024,(18)______. This meant the planet passed the 1.5C (2.7F) level agreed as a target by the Paris climate agreement for the first time. The UN secretary general, António Guterres, (19) ______.

The 1.5°C limit is a long-term goal, breached when warming is sustained for a decade or more. In 2024, CO2 levels rose significantly, far exceeding the levels required to stay on track for this target. While suggesting a smaller increase, (20) ______. Global heating continues to worsen as emissions rise, underscoring the urgent need to reduce CO2. Despite available solutions, political inaction remains a major barrier to meeting climate goals.

Wildfires in 2024, particularly in the Americas, released massive amounts of CO2, exacerbating the climate crisis. The increased frequency and severity of these fires are linked to climate change, while El Niño contributed to the dry conditions that fueled them. Additionally, El Niño hindered vegetation growth, reducing the ability of plants to absorb CO2. (21) ______.

The 2024 CO2 rise of 3.6ppm was more than double the level needed for net-zero goals. (22)______. Projections for 2025 predict a lower rise as La Niña improves vegetation growth. UN Secretary-General António Guterres has urged nations to prioritize climate action, emphasizing the need for stronger commitments to address the crisis.

Read the following passage about plastic bags and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 23 to 30.

Plastic bags are used by everybody. From a vegetable vendor to a designer store, everyone seems to use them. Even though they are one of the modern conveniences that we seem to be unable to do without, they are responsible for causing pollution, killing wildlife, and using up the precious resources of the Earth.  But, most of us are blissfully unaware of the outcomes that are occurring and will take place in the future.

Every once in a while, the government passes out an order banning store owners from providing plastic bags to customers for carrying their purchases. About a hundred billion plastic bags are used every year in the U.S. alone. The problem is further worsened by the developed countries shipping off their plastic waste to developing countries like India.

Once they are used, most bags go into landfills. Each year, more and more bags are ending up littering the environment. Once they become litter, plastic bags find their way into our waterways, parks, beaches, and streets. About 100,000 animals, such as dolphins, turtles, whales, penguins are killed every year due to these bags. And worse, the ingested plastic bag remains intact even after the death and decomposition of the animal. One of the worst environmental effects is that they are non-biodegradable. No one will live so long to witness the decomposition of plastic!

A tote bag can make a good substitute for carrying groceries and the shopping. You can keep the bag with the cashier, and then put your purchases into it instead of the usual plastic bag. Recycling the bags you already have is another good idea. Plastics are not only non-biodegradable, but are one of the major pollutants of the sea. For a clean and green environment, try to use alternatives to plastic whenever and wherever possible.

In which paragraph does the writer mention the biggest problem?