Matching Headings в IELTS Reading: алгоритм и тренажёр

A. On a summer afternoon, the centre of a large city can be seven degrees warmer than the farmland that surrounds it. Meteorologists have a name for the effect: the urban heat island. It was first described in London in 1818 by an amateur chemist who kept careful records of temperature inside and outside the city, and it has been measured in almost every major city since.

B. The cause is not, as is often assumed, waste heat from vehicles and air conditioning. That contribution is real but small. The dominant factor is surface: asphalt and dark roofing absorb far more solar radiation than vegetation, and release it slowly through the night. A city therefore does not simply get hotter during the day — it fails to cool down after dark.

C. The consequences fall unevenly. Studies in several North American cities have found that the hottest districts are consistently the poorest, where tree cover is thinnest and buildings are least likely to be air-conditioned. During the European heatwave of 2003, mortality rose most sharply in exactly such neighbourhoods. Heat, in other words, behaves less like a weather event than like a social one.

D. The most widely trialled remedy is also the oldest. Planting street trees lowers local air temperature by between one and three degrees, partly through shade and partly through transpiration, as water evaporating from leaves absorbs heat. Barcelona, Melbourne and Singapore have all committed to substantial increases in canopy cover, and early monitoring suggests the effect is measurable within a decade.

E. A newer approach targets roofs rather than streets. Painting a roof white, or coating it with a reflective membrane, can cut the surface temperature by up to thirty degrees. New York has treated more than six million square metres in this way. Critics point out that the benefit accrues largely to the building below rather than to the street, and that in colder months the same reflectivity increases heating costs.

F. What neither approach addresses is density. A compact city produces less transport emissions per resident than a sprawling one, but it also traps more heat between its buildings. Planners are therefore left with a genuine trade-off rather than a simple choice, and the balance struck will differ from one climate to another.

A. For three decades, the sleeper train looked like a museum piece. Budget airlines undercut it on price, high-speed rail beat it on daytime journeys, and one European operator after another withdrew its night services. By 2016 the network that had once linked Lisbon to Moscow had shrunk to a handful of routes.

B. The reversal, when it came, was driven less by nostalgia than by arithmetic. A passenger flying from Vienna to Brussels generates roughly seven times the emissions of one taking the sleeper. As carbon reporting became routine for corporate travel departments, that ratio began to appear on spreadsheets rather than in campaign leaflets.

C. Reopening a route is harder than closing one. Sleeper carriages have a working life of forty years, and almost none were built during the decline, so operators returning to the market have had to refurbish stock that is already decades old. A single new carriage costs upwards of three million euros and takes three years to deliver.

D. Pricing remains the unsolved problem. A berth must compete with a budget flight that may cost thirty euros, yet it occupies floor space that could otherwise carry four seated passengers. Operators have responded by segmenting sharply: shared couchettes at the bottom, private compartments with a shower at several hundred euros.

E. Whether the revival lasts will depend on decisions taken far from the railway. Night trains cross borders by definition, and a service is only viable if track access charges, safety certification and timetabling are coordinated between four or five national authorities. Where that coordination has been arranged, routes have survived; where it has not, they have quietly disappeared again.