Passage 1

Paragraph A: Communication occurs among many species, but language is often regarded as a uniquely human faculty. Bees perform intricate dances to signal the location of food, and birds produce complex songs to attract mates, yet these systems are limited to a relatively small set of messages. Human language, by contrast, is open-ended: a finite inventory of words and grammatical rules can be combined to produce an infinite number of novel sentences. This property, often called productivity or creativity, lets speakers discuss not only the here and now but also past events, future plans, imaginary worlds and abstract ideas. Another defining feature is arbitrariness: the connection between a word and its meaning is generally arbitrary, since different communities use completely different sound sequences for the same object. These characteristics make language far more powerful than simple animal communication, enabling humans to share knowledge, persuade one another, and shape reality through discourse.

Paragraph B: Because speech leaves no direct fossil evidence, the origin of language is notoriously difficult to reconstruct, and competing theories have been proposed for centuries. The gestural theory suggests that language began as manual gestures, with spoken language emerging later as vocalisations became increasingly efficient. This view is supported by the fact that humans can easily learn sign languages and that brain areas involved in hand movements are active during speech. Another line of thought emphasises vocal origins: early hominids gradually developed finer control over their larynx and tongue, enabling complex articulated sounds. Some evolutionary psychologists, including Robin Dunbar, have argued that language evolved as a form of social grooming. As social groups grew, gossip-like conversation replaced physical grooming as a more efficient way to maintain alliances and monitor social relationships. Although no single theory is conclusive, language evolution probably resulted from a combination of anatomical, cognitive and cultural changes.

Paragraph C: Language is more than a system of symbols; it is a powerful social instrument. Every utterance, whether a greeting, a question, or a joke, conveys information about the speaker's identity and relationship to the listener. Accent, dialect, choice of vocabulary and even patterns of silence can signal membership in particular communities and help individuals create a sense of belonging. People often adjust their speech to match that of the person they are talking to, a phenomenon called accommodation, which increases rapport and perceived solidarity. In multilingual settings, bilingual speakers may engage in code-switching, alternating between languages within a single conversation to express cultural allegiance, include or exclude others, or index authority. Language can therefore be used both as a bridge and as a barrier: it builds in-groups and reinforces shared values, but it can also mark outsiders and perpetuate social inequalities. In this way, everyday talk shapes social order as much as it reflects it.

Paragraph D: Children acquire their native language with astonishing speed and without explicit instruction. Around their first birthday they produce single words, and by the age of three most are combining words into elaborate sentences. This achievement is even more remarkable given the poverty of the stimulus: the speech that children hear is full of false starts, incomplete utterances and errors, yet they somehow extract consistent grammatical rules and apply them creatively. The linguist Noam Chomsky proposed that humans are innately equipped with a language acquisition device, a mental module that allows the child to infer the grammar of any language from limited input. Others stress the importance of social interaction and child-directed speech, pointing out that caregivers frequently exaggerate intonation, repeat words and reduce sentence length to make language more accessible. There is also the critical period hypothesis; children who experience extreme social deprivation and receive no language input before a certain age may master vocabulary later but never achieve full native grammatical competence. Language acquisition therefore arises from a delicate interplay of innate endowment, environmental stimulation and developmental timing.

Paragraph E: All living languages change, and change is not a sign of decay but of vitality. Sound shifts, semantic drift and grammatical restructuring can transform a language almost beyond recognition over several centuries. English itself has developed from Old English through Middle English to its modern global form as a result of invasions, literary invention, migration and technological innovation. Today digital media are accelerating linguistic change, as new words and internet slang can spread around the planet in a matter of hours. This same dynamism, however, can lead to language loss. Of the approximately 7,000 languages spoken in the world, many are endangered, and some researchers fear that most could disappear by the end of this century. When a language ceases to be used, the community loses a storehouse of knowledge, oral traditions and unique ways of conceptualising experience. Linguists and community members therefore work together to document endangered languages, create writing systems, and support revitalisation projects. Understanding how and why languages change is essential for preserving the world's linguistic heritage.