IELTS Academic Reading Practice Test 52

Almost every manufactured object in a modern home has spent part of its life inside a steel box. Clothing, electronics and car parts all cross the oceans in standard shipping containers, which are lifted from ship to train or lorry without their contents ever being touched. The system is so familiar that it rarely attracts attention, yet economic historians increasingly regard it as one of the decisive innovations of the twentieth century. Its importance lies less in the box itself, which is a remarkably simple object, than in the network of ships, cranes, ports and agreed rules that grew up around it.

For most of history, cargo was handled as what shippers call break-bulk: sacks, barrels, crates and bales that were loaded one at a time. In a typical port of the mid-twentieth century, gangs of dock workers, known in the United States as longshoremen, carried goods from the quay into a ship's hold, where each item had to be stowed by hand so that the load would not shift at sea. A large vessel could spend a week or more in port being unloaded and loaded again, and the time a ship spent tied up at the quay earned its owner nothing. Theft was common, since goods were exposed at every stage, and handling charges often made up a large share of the total price of moving freight across an ocean.

The man usually credited with changing this was not a sailor but a road haulier. Malcom McLean had built one of the largest trucking companies in the United States, and he was frustrated by the hours his drivers spent waiting at the docks while their loads were transferred to ships. His solution was to detach the body of a truck from its wheels and lift the whole unit on board. To put the idea into practice, he acquired a shipping company and converted an old wartime oil tanker, the Ideal-X, by fitting a platform above its deck. On 26 April 1956 the ship left Port Newark, New Jersey, carrying 58 containers, and it arrived in Houston, Texas, five days later.

The savings were apparent at once. According to calculations later cited by the economic historian Marc Levinson, loading loose cargo onto a medium-sized ship at that time cost almost six dollars a ton, whereas loading the Ideal-X had cost less than sixteen cents a ton. Over the following decade McLean's business, which became known as Sea-Land, introduced ships designed specifically to carry containers, with cell-like guides in their holds into which boxes could be lowered and stacked. Rival firms gradually followed, although many established shipping lines were slow to accept that their traditional vessels were becoming obsolete.

Early container systems had one serious weakness: they were incompatible. Each company used boxes of its own length with its own fittings, so a container belonging to one line could not easily be carried on another line's ship or lifted by its cranes. An engineer named Keith Tantlinger, who worked with McLean, designed a steel fitting for each corner of the box together with a twistlock, a device that rotates inside the fitting to fasten a container to a crane, a vehicle or another container.

These designs were made available to the industry without royalties, and in the late 1960s the International Organization for Standardization adopted common dimensions. The most widely used boxes are now twenty or forty feet long, and the capacity of a ship is measured in twenty-foot equivalent units, or TEU.

Military logistics then accelerated the change. During the Vietnam War, American forces struggled to move supplies through congested ports, and in 1967 Sea-Land won a contract to carry containers of supplies across the Pacific for them. Rather than sailing home empty, the company's ships began calling in Japan to collect goods bound for the American market. Within a few years, container routes linked the factories of East Asia with consumers in North America and Europe. The ability to ship components cheaply from one country to another also encouraged manufacturers to divide production among plants in different parts of the world.

The effects on port cities were dramatic and often painful. Container terminals need vast areas of flat land for stacking boxes, and they employ only a fraction of the labour that the old docks required. In New York, much of the traffic moved from the crowded piers of Manhattan and Brooklyn to new terminals across the harbour in New Jersey. In London, the historic docks near the city centre closed one after another, while trade shifted downstream to Tilbury and to the small Suffolk port of Felixstowe, which grew into Britain's busiest container port. Dock work, once a source of employment for entire neighbourhoods, almost vanished.

Today the scale of the system is difficult to picture. The largest container ships are almost 400 metres long and can carry more than 24,000 TEU. At the busiest terminals, cranes are operated remotely or run automatically, and computer systems decide where each box should be stacked so that it can be retrieved in the right order. Economists still debate how much of the growth in world trade since the 1960s should be attributed to the container rather than to falling tariffs, but one influential study concluded that, for trade between industrialised countries, its effect was considerably larger than that of trade agreements. The steel box, in short, did not merely make shipping cheaper; it changed where things are made.

Bamboo is so often used as timber that many people are surprised to learn it is not a tree at all. Botanically, the bamboos form a subfamily of the grass family, the Poaceae, which also includes wheat, rice and maize. More than a thousand species are recognised, ranging from small plants of the forest floor to giants with stems, or culms, more than twenty metres tall and as thick as a person's thigh. Bamboos grow naturally on every continent except Europe and Antarctica, from the lowland tropics to the mountain slopes of the Himalayas and the Andes, and a few species tolerate winters cold enough to freeze the ground.

The speed of bamboo's growth is its most famous characteristic. Certain species have been recorded growing by close to a metre in a single day, which places them among the fastest-growing plants on Earth, although rates of a few centimetres a day are more typical of bamboos in cooler climates. The explanation lies in the way a culm develops. Unlike a tree, which adds a new ring of wood every year, a bamboo shoot emerges from the ground with the full diameter it will ever have, and its segments, separated by solid joints called nodes, simply lengthen in the manner of a telescope. Within a single growing season the culm reaches its final height; after that it never becomes taller or thicker, although its walls continue to harden for several years.

Below ground, bamboos spread by means of rhizomes, horizontal stems from which new shoots arise. Gardeners distinguish two broad patterns. Clumping bamboos, typical of the tropics, have short rhizomes that turn upwards almost immediately, so the plant forms a dense cluster that expands only slowly. Running bamboos, more common in temperate regions, send their rhizomes several metres through the soil before shoots appear. This habit makes running species useful for binding soil on unstable slopes, but it also explains why some have escaped from gardens and become invasive, pushing up through lawns and paving.

Perhaps the strangest feature of many bamboos is the way they reproduce. Numerous species go for decades without flowering, then bloom at the same time across a whole region, set seed and die. One Japanese species, Phyllostachys bambusoides, appears to follow a cycle of about 120 years, and plants grown from the same original stock have been reported to flower almost simultaneously in different countries, which suggests that an internal clock rather than local weather triggers the event. In 1976 the American ecologist Daniel Janzen proposed an explanation known as predator satiation: by producing an enormous quantity of seed at once, the plants overwhelm the animals that feed on seeds, so that enough survive to germinate.

That sudden glut of seed can have serious consequences for people. In the hills of north-east India, the species Melocanna baccifera flowers roughly every 48 years, an event known locally as mautam. The fallen seed feeds an explosion in the population of rats, and when the seed is exhausted the rats turn to farmers' crops and stored grain. The flowering of the late 1950s was followed by a severe famine in the Mizo hills, and anger at the official response contributed to an armed uprising in the following decade. Before the bamboo flowered again in the years after 2006, the state government prepared a special relief programme in advance, but crop losses were still heavy.

As a building material, bamboo offers an unusual combination of lightness and strength. Its fibres run along the length of the culm and are densest near the outer surface, where bending stresses are greatest, so a hollow culm resists bending efficiently for its weight. In tension, the strongest species compare favourably with some grades of steel when measured weight for weight. For centuries builders across Asia and Latin America have used bamboo for houses, bridges and scaffolding. Bamboo has disadvantages, however: it burns readily, it is attacked by insects and fungi unless treated, and because each culm differs in diameter and wall thickness, engineers find it harder to calculate safe loads than with standardised materials. In 2025, citing safety concerns, the Hong Kong government began requiring metal scaffolding on many new public works projects.

Bamboo has also played a part in the history of technology. Around 1880, while searching for a durable filament for his electric lamp, Thomas Edison tested a wide range of plant fibres and found that carbonised bamboo performed best. The material he used is believed to have come from a grove near Kyoto in Japan, and filaments of this kind could glow for well over a thousand hours. Although metal filaments later replaced it, bamboo has found many new industrial roles: today it is pulped for paper, spun into textiles and pressed into flooring, chopping boards and even bicycle frames.

Bamboo is often promoted as an environmentally friendly material, and some of the claims are justified. Because it regrows from its rhizomes after harvesting, a plantation does not need to be replanted, and culms can be cut within a few years rather than the decades needed for most timber trees. Yet researchers caution against simple conclusions. Turning bamboo into soft fabric generally involves chemical processing similar to that used for other plant-based fibres such as viscose, and a bamboo floor shipped halfway around the world carries a considerable cost in transport emissions. The plant's environmental value, in other words, depends heavily on how it is grown, processed and used.

English spelling has few defenders. Learners from abroad complain that the same letters can represent quite different sounds, as in 'though', 'through', 'tough' and 'cough', while native-speaking children typically take longer to read accurately than children learning languages such as Finnish or Italian, whose spelling corresponds closely to pronunciation. For more than two centuries, reformers have argued that the system should be rationalised. Their criticisms are largely justified. Yet I believe that the history of their efforts reveals why a thorough reform is neither achievable nor, on balance, desirable.

Much of the irregularity is an accident of history. English spelling began to settle after William Caxton introduced printing to England in the 1470s, but the pronunciation of the language continued to change. In particular, the long vowels shifted dramatically during this period, so that letters chosen to represent one sound came to stand for another. Other oddities were introduced on purpose. Renaissance scholars, eager to display the classical ancestry of words, added a silent 'b' to 'debt' and 'doubt' because the Latin sources were debitum and dubitare, and the 's' in 'island' was inserted through a mistaken association with the unrelated word 'isle'.

The most successful reformer was the American lexicographer Noah Webster. His spelling book, first published in 1783, sold in enormous numbers, and his American Dictionary of the English Language of 1828 promoted forms such as 'color', 'center' and 'defense'. These became standard in the United States, which is why American and British spelling differ today. But Webster's achievement is instructive. He altered only a limited number of patterns, he did so when the young nation was keen to assert a cultural identity separate from Britain's, and his more radical proposals, such as 'tung' for 'tongue', never caught on.

Later reformers were less fortunate. In 1906 the Simplified Spelling Board, financed by the industrialist Andrew Carnegie, published a list of 300 words with simplified forms, and in August of that year President Theodore Roosevelt ordered the Government Printing Office to use them in documents from the executive branch. Newspapers ridiculed the order, and members of Congress, who had not been consulted, moved to require government printers to follow the spelling of generally accepted dictionaries. Roosevelt withdrew the order within months. The episode demonstrated that spelling, unlike many technical standards, belongs to its users, who will not readily accept changes imposed from above.

Advocates of reform often point to the needs of children. In the 1960s many British primary schools experimented with the Initial Teaching Alphabet, a system of 44 characters devised by Sir James Pitman in which each sound had its own symbol, so that beginners could learn to read before moving on to conventional spelling. By 1966 most local education authorities in Britain were using it in at least one school, yet it had largely disappeared from classrooms by the end of the following decade. Whatever its merits for beginners, a child taught this way had to master two systems rather than one, and I suspect that this double burden did much to undermine its appeal.

A more fundamental problem is that English is not pronounced in the same way everywhere. A spelling that matched the speech of London would misrepresent that of Glasgow, Lagos or Sydney; words such as 'bath', 'car' and 'water' sound quite different across the English-speaking world. Present spelling, for all its faults, works as a neutral standard that readers with any accent can interpret. It also preserves visual links between related words whose pronunciation differs, such as 'sign' and 'signature' or 'nation' and 'national', and these links would be broken by a purely phonetic system.

Then there is the question of the past. Any thorough reform would make centuries of printed books look strange to new generations, and it would oblige millions of adults to relearn a skill they have already mastered. Publishers, schools and software makers would all bear substantial costs, and for a long transitional period two systems would compete, causing exactly the kind of confusion that reform was meant to remove. The German-speaking countries offer a warning. A relatively modest reform agreed in 1996 provoked years of bitter argument, legal challenges and a return to the old spelling by some newspapers, and it was revised more than once before a settled version took effect in 2006. If a change of that size proved so divisive, a transformation of English spelling, which is used by hundreds of millions of people in dozens of countries and has no single authority to regulate it, is very hard to imagine.

This does not mean that nothing can be done. Spelling has always changed gradually through usage: 'catalog' is increasingly common beside 'catalogue', and 'program' is now normal in computing even in Britain. Neither change required a committee, a law or a presidential order; each spread because enough writers found it convenient. Dictionaries record such changes rather than impose them, and that is probably the right model. The greater opportunity, in my view, lies in teaching. Systematic phonics programmes, which explicitly teach the most common correspondences between letters and sounds, have been shown to help beginning readers, and explaining the historical reasons for irregular spellings can make them seem less arbitrary. English spelling will never be simple, but it can be made easier to learn without being remade.