IELTS ACADEMIC READING PRACTICE TEST
Full Practice Test 1 · Time allowed: 60 minutes · Questions: 1–40
The Return of the Urban Wetland
AFor much of the twentieth century, wetlands in and around cities were regarded as inconvenient pieces of land. They were frequently drained, filled, or separated from rivers so that roads, factories, and housing could be constructed. The decision seemed practical at the time: land was scarce, while the economic value of new buildings appeared easier to measure than the less visible benefits of a wetland. Today, however, researchers and city planners are increasingly reconsidering this approach. Urban wetlands are being restored in a growing number of cities because they can perform several useful functions simultaneously.
BOne of the most important functions of a wetland is its ability to manage water. During heavy rainfall, water can move rapidly across paved surfaces and overwhelm drainage systems. A wetland can temporarily store some of this excess water, slowing its movement and reducing pressure on nearby infrastructure. The effect is particularly valuable in cities where large areas of concrete and asphalt prevent rain from naturally entering the soil. Rather than treating stormwater only as a problem that must be removed as quickly as possible, planners can allow wetlands to become part of the city's drainage strategy.
CWetlands can also improve water quality. As water passes slowly through vegetation and layers of soil, some suspended material can settle before the water reaches a river or lake. Certain plants and microorganisms can also absorb or transform substances that would otherwise enter waterways. This does not mean that a wetland can safely receive unlimited pollution. Its ability to filter contaminants depends on the type and quantity of pollutants, the size of the wetland, and the characteristics of its vegetation and soil. Nevertheless, carefully designed wetlands can provide a useful additional stage of water treatment.
DAnother advantage is biological diversity. Even relatively small wetlands can provide habitats for insects, amphibians, birds, and aquatic plants. In heavily developed areas, such habitats may be particularly valuable because nearby natural ecosystems have disappeared or become fragmented. A wetland surrounded by buildings is unlikely to reproduce all the ecological conditions of a large natural marsh, but it can still function as a refuge for some species. In addition, groups of connected wetlands may allow animals to move between otherwise isolated green spaces.
EThe benefits are not limited to wildlife. Researchers studying urban environments have found that access to natural areas can influence how people experience their surroundings. A wetland with paths, viewing areas, and vegetation can become a place for walking, observation, and environmental education. Schools may use restored wetlands to introduce students to local ecosystems, while residents can use them as recreational spaces. However, public access must be planned carefully. Excessive human activity can disturb sensitive species, particularly during breeding periods.
FRestoration is not as simple as digging a pond and planting a few wetland species. Successful projects usually require an understanding of the site's previous history and its current water flows. If water enters too quickly or leaves too slowly, the ecosystem may fail to develop as intended. The selection of plants is also important because species that thrive in one climate or soil type may perform poorly elsewhere. Engineers and ecologists therefore often work together when designing urban wetland projects.
GDespite their advantages, urban wetlands have limitations. They require land, and land in cities can be expensive. They also need long-term management. Vegetation may become overgrown, invasive species may appear, and infrastructure such as paths or drainage channels may require repair. For this reason, wetland restoration should not be viewed as a universal replacement for conventional drainage systems. Instead, researchers increasingly argue that wetlands work best as one component of a broader approach that combines natural systems with carefully designed infrastructure.
HThe changing attitude towards urban wetlands reflects a wider shift in urban planning. Cities are beginning to consider not only how quickly infrastructure can be built but also how effectively it can respond to environmental pressures over many decades. A restored wetland may provide flood protection, ecological habitat, educational opportunities, and recreational space at the same time. Its value is therefore difficult to express through a single measurement. The challenge for planners is to recognize these combined benefits while ensuring that restoration projects are scientifically designed and realistically maintained.
The Quiet Transformation of Public Libraries
AFor centuries, libraries were primarily associated with books and the preservation of written knowledge. Their buildings often reflected this purpose: shelves occupied most of the available space, while visitors were expected to read quietly and return materials on time. Although books remain central to libraries, the role of the institution has gradually expanded. In many communities, libraries now provide access to computers, educational programmes, creative facilities, public information, and spaces where people can work or meet. This transformation has occurred partly because the way people obtain and use information has changed.
BThe growth of the internet initially appeared to threaten the traditional library. If information could be found online within seconds, some observers questioned why people would continue visiting a physical building to consult books. Yet libraries did not disappear. Instead, many changed their services. Computers and internet access became important features, particularly for people who could not afford reliable equipment or connections at home. In this sense, the library began to serve not only as a place containing information but also as a place providing access to information technology.
CThis role has become particularly significant in communities where digital access is unequal. Having an internet connection is not the same as being able to use digital services effectively. People may need assistance with online forms, employment applications, educational platforms, or government services. Librarians increasingly help visitors navigate these systems. Their work therefore involves a combination of traditional information skills and newer forms of digital guidance. The librarian's value is not simply in knowing where information is stored but also in helping users evaluate and use it.
DAnother development is the creation of spaces designed for activities that were once unusual in libraries. Some modern libraries include recording rooms, workshops, exhibition areas, study rooms, or equipment for creative projects. These facilities reflect the idea that libraries can support the production of knowledge and culture as well as its consumption. A teenager learning to edit audio, a small group developing a community project, or an adult attending a skills workshop may all use the same institution for very different purposes.
EHowever, this expansion creates difficult decisions. Library budgets are rarely unlimited, and money spent on technology cannot automatically be spent on books, staff, building maintenance, or community programmes. A library that attempts to offer every possible service may end up doing none of them particularly well. Managers therefore have to consider local needs. A service that is highly valuable in a university town may be less useful in a small community where residents have different priorities.
FThe physical design of libraries has changed as well. Traditional reading rooms often emphasized silence and individual study. Modern buildings may contain a mixture of quiet zones and collaborative spaces. Movable furniture allows rooms to be adapted for lectures, group work, exhibitions, or community meetings. This flexibility can increase the usefulness of limited space, but it also creates potential conflict. Someone attending a discussion may need to speak, while another visitor may have come specifically to work in silence. Good design therefore requires careful separation of activities rather than simply filling a building with furniture.
GLibraries have also become important places for social connection. This function can be easy to overlook because it is less measurable than the number of books borrowed. Yet a free public space where people can spend time without being expected to buy anything can be valuable, particularly in communities with few other such places. Children's activities, language groups, lectures, and local events can bring people into contact with others. In this way, the library can contribute to community life even when visitors do not borrow a single book.
HThe future of libraries is therefore unlikely to depend on choosing between books and technology. The more significant question is how different services can be combined effectively. A successful library may continue to preserve printed materials while providing digital resources, educational opportunities, creative spaces, and community services. Its precise form will depend on the population it serves. Rather than becoming obsolete because information is increasingly digital, the library may be evolving into something broader: a public institution whose central purpose is helping people access, understand, create, and share knowledge.
When Machines Learn to Work With Nature
AFor much of modern history, technological development has often been understood as an attempt to make the natural world more predictable. Engineers have built dams to control rivers, greenhouses to regulate growing conditions, and machines to replace physically demanding agricultural work. More recently, however, a different approach has begun to attract attention. Instead of attempting to control every environmental variable, researchers are developing technologies that respond to natural processes and work alongside them. This approach is visible in agriculture, environmental restoration, architecture, and the management of water and energy.
BOne example can be found in agriculture. Conventional farming systems often depend on carefully controlled schedules: irrigation occurs at predetermined times, fertilizers are applied according to established plans, and crops may be grown in environments where temperature and humidity are artificially managed. Such systems can be highly productive, but they may also use substantial amounts of water and energy. Researchers are therefore experimenting with systems that monitor plants and soil continuously and respond only when conditions indicate that intervention is necessary.
CSensors are central to this approach. Devices placed in soil can measure moisture, while cameras can provide information about plant growth. Weather stations can record temperature, humidity, wind, and rainfall. When these sources are combined, software can estimate whether a crop actually needs water rather than relying solely on a fixed timetable. The potential benefit is not simply technological efficiency. By matching intervention more closely to biological need, farmers may reduce unnecessary resource use while maintaining suitable growing conditions.
DYet sensing technology alone does not guarantee better environmental outcomes. A farm may collect enormous quantities of data without knowing which information is genuinely useful. Sophisticated equipment can also be expensive to install and maintain. In regions where technical support is limited, a system that works perfectly in a research facility may be difficult to operate in ordinary agricultural conditions. Researchers therefore increasingly emphasize the importance of designing technology around the practical circumstances of its users rather than assuming that more sensors automatically produce better decisions.
EA similar principle appears in ecological restoration. Historically, restoration projects sometimes attempted to recreate a particular landscape according to a fixed historical model. This could involve removing species considered undesirable and introducing others believed to belong in the ecosystem. However, ecosystems are dynamic. Climate conditions change, species move into new areas, and disturbances such as fire or flooding can alter habitats. A restoration strategy that attempts to preserve one exact ecological state may therefore become increasingly unrealistic.
FSome scientists now argue that restoration should focus less on reproducing a single historical condition and more on improving an ecosystem's ability to function under changing circumstances. This may involve restoring natural water movement, reconnecting fragmented habitats, or increasing the diversity of native species. The objective is not to predict precisely what an ecosystem will look like decades from now. Instead, it is to create conditions under which the ecosystem has a better chance of adapting.
GArchitecture provides another example. Buildings traditionally separate their internal environment from the outside world, using mechanical systems to maintain a relatively constant temperature. In contrast, some newer designs incorporate natural ventilation, shading, vegetation, and building materials that respond to local climatic conditions. Such buildings do not eliminate mechanical systems, but they can reduce dependence on them by allowing the building to benefit from natural patterns of airflow and sunlight.
HThis approach introduces a different definition of technological sophistication. A highly sophisticated system is not necessarily one containing the greatest number of components. It may instead be one that achieves its purpose with fewer unnecessary interventions. In some situations, a simple system that responds effectively to local conditions can outperform a complex system that requires constant adjustment. The idea resembles an ecological principle: resilience can sometimes depend on diversity, flexibility, and the ability to respond to change rather than on rigid control.
IThere are, however, serious challenges. Technologies that interact with natural systems must operate in environments that are difficult to predict. A sensor can fail, a drought can last longer than expected, or an unfamiliar species can alter an ecosystem in an unexpected way. Human decisions remain necessary, particularly when technological recommendations conflict with economic pressures. The most promising systems may therefore be those that support human judgement rather than attempting to replace it entirely.
JThe broader significance of this shift extends beyond individual technologies. It represents a change in the relationship between engineering and environmental science. Instead of treating nature primarily as something to be controlled, technology can be designed to observe, respond, and adapt. This does not mean abandoning human intervention. Rather, it suggests that intervention can become more selective. The goal is not to make natural systems behave like machines, but to develop machines that are capable of working within the complexity of natural systems.