Reading Comprehension — Set 8
Questions 71–80 of 105
Water is never permanently lost; instead it circulates continuously through a series of interconnected processes that together form a global cycle. Heat from the sun causes water to evaporate from oceans, lakes, and rivers, rising into the atmosphere as water vapour. As this vapour cools at altitude it condenses into clouds, eventually falling back to the surface as precipitation in the form of rain or snow. Some of this water flows into rivers and returns to the sea, while the rest soaks into the ground and replenishes underground aquifers. This continuous movement of water through Earth's systems sustains all terrestrial and aquatic life by providing the fresh water that plants, animals, and humans depend upon for survival. What is the primary purpose of a passage about the water cycle?
Correct Answer: B. To explain how water moves through Earth's systems and sustains life
The passage's primary purpose is explaining the continuous movement of water through evaporation, condensation, and precipitation, and its vital role in supporting life on Earth. This grammar rule is fundamental to constructing correct and meaningful English sentences Mastering this concept helps in solving grammar-based questions in competitive.
Fossil fuels such as coal, oil, and natural gas have powered global development for more than a century, but their combustion releases carbon dioxide and other pollutants that drive climate change and degrade air quality. In response, scientists and engineers have developed technologies that harness naturally replenishing sources of power, including sunlight, wind, flowing water, and geothermal heat. These renewable energy sources are sustainable alternatives that can reduce environmental impact and meet energy needs without being exhausted over time, unlike finite fossil fuel reserves. Falling costs have made solar and wind power increasingly competitive with conventional energy sources, accelerating their adoption worldwide. Many nations now view the transition to renewables as essential for both environmental and long-term economic reasons. Which idea best summarizes a passage about renewable energy?
Correct Answer: B. Renewable energy sources are sustainable alternatives that can reduce environmental impact and meet energy needs
This captures the central theme of renewable energy's role as a sustainable solution. It addresses their advantages (sustainability, environmental benefits) and their capacity to meet energy demands. Mastering this concept helps in solving grammar-based questions in competitive.
Nations across the world differ substantially in their levels of industrial output, educational attainment, access to healthcare, and the quality of roads, power grids, and other essential services. These differences are not accidental; they reflect historical patterns of investment, governance, and access to global markets that have compounded over generations. Some nations have greater economic, educational, and infrastructural resources, creating different development levels and challenges that shape the opportunities available to their citizens. Countries classified as developed typically have high per-capita incomes, long life expectancies, and well-funded public institutions, whereas developing nations are still building these foundations. Bridging this gap requires targeted investment, international cooperation, and policies that address the structural barriers to development. What is the main idea of a passage comparing developed and developing nations?
Correct Answer: B. Some nations have greater economic, educational, and infrastructural resources, creating different development levels and challenges
This captures the core concept: differences in resources and development create distinct challenges and opportunities. The statement acknowledges both the inequality and its implications. Mastering this concept helps in solving grammar-based questions in competitive.
Many of the world's languages, traditional art forms, ceremonial practices, and craft techniques are at risk of disappearing as younger generations migrate to cities and adopt globalised lifestyles. Once lost, these elements of human heritage cannot be recovered, and with them goes irreplaceable knowledge about history, ecology, and ways of organising social life. Scholars and activists therefore argue for the importance of protecting cultural heritage and indigenous practices through documentation, education, and community-led revitalisation programmes. Governments have increasingly recognised these efforts in law, establishing policies that support communities wishing to maintain their traditional ways of life alongside modern development. Cultural preservation is not merely a nostalgic exercise but a commitment to sustaining the diversity that enriches human civilisation as a whole. Which title best fits a passage about cultural preservation?
Correct Answer: B. The Importance of Protecting Cultural Heritage and Indigenous Practices
This title directly addresses the passage's focus on maintaining and protecting cultural traditions and heritage. It specifies both the subject (culture) and the action (preservation). Mastering this concept helps in solving grammar-based questions in competitive.
Artificial intelligence has already demonstrated its capacity to diagnose diseases, translate languages, optimise energy systems, and generate creative works at a quality that surprises even experts in those fields. Researchers foresee even greater possibilities as the technology continues to advance, with AI potentially accelerating scientific discovery and expanding access to services that were previously available only to the wealthy. At the same time, AI offers significant potential benefits and challenges requiring careful development and ethical considerations, since the same systems that can improve lives can also displace workers, reinforce biases embedded in training data, and be used for surveillance or manipulation. Policymakers, technologists, and ethicists are therefore engaged in an urgent effort to establish frameworks that allow beneficial applications while limiting harmful ones. The path forward depends on deliberate choices made now about how this powerful technology is governed. What central theme emerges from a passage about artificial intelligence?
Correct Answer: B. AI offers significant potential benefits and challenges requiring careful development and ethical considerations
This captures the passage's balanced perspective on AI: acknowledging its transformative potential while recognizing the need for responsible development and ethical frameworks. This grammar rule is fundamental to constructing correct and meaningful English sentences Mastering this concept helps in solving grammar-based questions in competitive.
The world's oceans cover more than seventy percent of the Earth's surface and are home to an extraordinary diversity of life, from microscopic plankton to the largest animals that have ever existed. However, marine ecosystems face threats from overfishing and pollution, requiring protection to sustain ocean health and human resources. Industrial fishing fleets have depleted many commercially important species to a fraction of their historical abundance, while plastic waste, agricultural run-off, and rising water temperatures have damaged coral reefs and other sensitive habitats. Coastal communities that depend on fishing and tourism are already experiencing the economic consequences of these declines. Protecting marine ecosystems through expanded marine reserves, stricter regulation of fishing, and reductions in land-based pollution is essential to reversing this damage. What is the best main idea for a passage about ocean conservation?
Correct Answer: B. Marine ecosystems face threats from overfishing and pollution, requiring protection to sustain ocean health and human resources
This captures the passage's focus on ocean ecosystem threats and the importance of conservation. It identifies both the problems (fishing, pollution) and the stakes (sustaining life and resources). Mastering this concept helps in solving grammar-based questions in competitive.
Beginning in Britain in the mid-eighteenth century and spreading rapidly across Europe and North America, a series of technological and economic changes fundamentally altered the way goods were produced and how people lived and worked. The invention and adoption of steam-powered machinery allowed factories to replace cottage industries, enabling the mass production of textiles, iron goods, and later a vast range of consumer products. This transformation of society through mechanisation and industrial development drew millions of workers from rural areas into rapidly growing cities, reshaped family structures, created new social classes, and generated unprecedented levels of material wealth alongside serious new social problems. The changes were so profound and far-reaching that historians regard them as among the most significant turning points in human history. The legacy of this industrial transformation continues to shape economic systems, urban landscapes, and social relationships in the twenty-first century. What title would best suit a passage about the Industrial Revolution?
Correct Answer: B. The Transformation of Society Through Mechanization and Industrial Development
This title captures the passage's main focus: how industrialization fundamentally changed society. It identifies both the mechanism (mechanization) and the scope (societal transformation). Mastering this concept helps in solving grammar-based questions in competitive.
Every human being carries a unique set of genetic instructions encoded in the DNA of their cells, and variations in this code can determine susceptibility to a wide range of inherited diseases. Advances in genome sequencing have made it possible to read these instructions quickly and affordably, opening the door to medical approaches tailored to the individual patient. Understanding genetic information enables treatments for inherited diseases and improved medical care through personalised approaches that target the specific molecular mechanisms driving a patient's condition. Conditions that were once managed through broad-spectrum drugs with significant side effects can now be treated with precision therapies matched to a patient's genetic profile. This shift toward personalised medicine is widely regarded as one of the most promising frontiers in healthcare. Which statement best expresses the main idea of a passage about genetic research?
Correct Answer: B. Understanding genetic information enables treatments for inherited diseases and improved medical care through personalized approaches
This statement captures the passage's central idea: genetic knowledge's practical applications in medicine and treatment. It acknowledges both scientific understanding and its medical benefits. Mastering this concept helps in solving grammar-based questions in competitive.
Climate is one of the most fundamental factors shaping the distribution of life on Earth. Temperature ranges, seasonal variation, and precipitation levels collectively determine which organisms can survive and reproduce in any given location. Species that evolved in tropical rainforests cannot tolerate arctic winters, while cold-adapted animals would perish in desert heat. As climate patterns shift, the boundaries of suitable habitat move accordingly, forcing species to migrate, adapt, or face extinction. Scientists studying biodiversity therefore pay close attention to climate data, recognising that climate patterns directly influence where species can survive and thrive. What does the passage suggest about the connection between climate and biodiversity?
Correct Answer: B. Climate patterns directly influence where species can survive and thrive
The passage indicates that climate is fundamental to determining species ranges. Changes in temperature and precipitation patterns directly affect which species can survive in particular regions, shaping biodiversity patterns. Mastering this concept helps in solving grammar-based questions in competitive.
In any ecosystem, food webs are structured by a hierarchy of feeding relationships, with apex predators occupying the highest position. These top predators exert a powerful downward influence on the populations below them, particularly on herbivores that graze on vegetation. When apex predators are removed from an ecosystem, herbivore populations often explode, leading to overgrazing that strips vegetation and degrades habitat for countless other species. By controlling herbivore populations, apex predators prevent overgrazing and ecosystem collapse, a phenomenon ecologists call a trophic cascade. Their presence is therefore essential for maintaining the overall balance and health of the ecological community. Why does the passage likely discuss apex predators in food webs?
Correct Answer: B. Apex predators control herbivore populations, preventing overgrazing and ecosystem collapse
The passage implies that top predators play crucial regulatory roles. By controlling herbivore numbers, apex predators prevent overexploitation of vegetation, maintaining ecological balance throughout the system. Mastering this concept helps in solving grammar-based questions in competitive.