Bài đọc tiếng Anh trình độ C1
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Designing against cheating
Soon after the first version reached real users, a problem emerged that no one on the team had anticipated.…
The economics of a school platform
Why can a student team give away software that a company would sell? The answer lies in the cost structure of…
Privacy by design
Any product that points a camera at children invites a hard question: where does the video go? FitForm…
Writing a README that people read
A README is the front door of a project. Judges, teachers and strangers on the internet decide in about a…
The clock that changed work
Before mechanical clocks, a working day was measured by daylight and by tasks. A field was ploughed; a loaf…
The myth of learning styles
Ask a hundred teachers whether students learn better when taught in their preferred style — visual, auditory,…
The price of attention
A service that costs nothing still has a price, and in the case of most apps the price is attention.…
Antibiotics and patience
Antibiotics changed medicine more than almost any other invention of the twentieth century. An infection that…
The grammar of politeness
English learners often master tenses and still sound rude, because politeness in English is carried less by…
The invisible work of translation
A good translation is noticed only when it fails. The reader meets a sentence that limps, looks up, and…
Memory and the shape of a day
Ask someone to describe last Tuesday and you will hear three or four moments, not fourteen hours. Memory does…
The rules of a fair game
Any competition between unequal participants faces the same question: should the prize go to the strongest,…
The rule with no reason
Every institution accumulates rules whose origins nobody remembers. A school forbids a particular coat. A…
The promise of the blank page
Ask a student why an essay has not been started and the answer is rarely laziness. It is more often that…
The bridge that swayed
When the Millennium Bridge in London opened in June 2000, around ninety thousand people crossed it on the…
The library of Alexandria did not burn
The story is familiar. A great library, the collected knowledge of the ancient world, destroyed in a single…
The colour that had no name
In ancient Greek texts the sea is described as wine-dark and honey is described as green. Readers have found…
What a forest remembers
Two patches of woodland can look identical and be entirely different things. One grew back on abandoned…
The interview with the machine
A growing number of employers use software to sift applications before any person reads them. The attraction…
The last two per cent
Anyone who has built something will recognise the shape of the problem. The system works. It handles the…
The cost of being early
Business history is usually told as a story of first movers, and the story is mostly false. The first company…
The argument you should lose
There is a question worth asking before any disagreement: what would change my mind? If the answer is…
The word that changed the vote
In a well-known experiment, two groups of people read a description of a city facing a disease outbreak…
The tenuous link
Headlines connecting a food to a disease appear several times a month. Most rest on a link that is real,…
The silt behind the dam
A dam is designed around water. The thing that eventually defeats many dams is silt. Every river carries…
The candid report
Most organisational reports are written to be survivable rather than true. This is not because the authors…
The silence of the archive
A historian studying an eighteenth-century town can tell you what the magistrates decided, what the merchants…
The promise of the average day
People planning a task reliably underestimate how long it will take, and the underestimate survives…
The paper that nobody read
An idea published in 1945 described a machine that stored documents and let a reader follow links between…
The photograph of the eclipse
In 1919 two expeditions photographed stars near the sun during a total eclipse. The point was to measure…
The translation that chose
A translator meets a sentence with two possible readings and must pick one. The original keeps both. The…
The witness who was sure
Confidence and accuracy are different things, and courts have spent two centuries learning how different. A…
The photograph with no caption
The same photograph appeared in two newspapers on the same morning. In one it illustrated a story about a…
The song that was two songs
A melody written for a funeral in 1860 became a stadium chant in the 1970s. The notes are the same. Almost…
The dictionary that followed
Dictionaries are often treated as courts of appeal, which is a misunderstanding of what the modern ones do. A…
The census that missed a street
A national census undercounted one city district by an estimated eleven per cent. The questionnaires were…
The border that followed a river
Two provinces agreed in 1908 that their boundary was the main channel of the river. The agreement was…
The reservoir and the dry year
A reservoir designed for a one-in-fifty-year drought failed in its thirty-first year. The engineering was…
The experiment that worked too well
A classroom study of a new teaching method reported an improvement so large that the authors spent most of…
The waiting list that grew shorter
A hospital department cut its average wait from fourteen weeks to six without seeing a single extra patient…
The tax records that became history
Almost everything known about ordinary life in many pre-modern societies comes from documents written to…
The model that memorised
A system trained to spot a disease in chest images reached 97 per cent accuracy in testing and failed in the…
The feeling of knowing
The sensation that you know something is a separate mental event from knowing it, and the two can be pulled…
The subtitle that chose a word
A character in a film says four syllables. The subtitle reads 'I understand'. A different subtitler, working…
The loan word that came home
English borrowed a word from Japanese, changed its meaning, and lent it back. Japanese now has two forms of…
The tutor who said less
Recordings of tutorials found that the most effective tutors spoke for about a third of the session. The…
The team that practised losing
A basketball coach spent twenty minutes a week rehearsing situations in which the team was behind with two…
The promotion that removed the skill
An organisation promoted its three best engineers to management. Within a year, two had asked to go back and…
The subsidy that raised the price
A government offered buyers a grant of twenty per cent towards a product. Within eight months the list price…
The insurance that made people careless
A scheme that reimbursed the full cost of replacing stolen bicycles saw theft claims rise by a third in its…
The tolerance that cost a week
Every part of an assembly passed inspection. The assembly did not fit, and nobody had made a mistake. A…
The feature that nobody asked to remove
A team removed a feature used by four per cent of its users. The four per cent complained loudly, the other…
The survey that asked the wrong people
A product team surveyed its users about a proposed change and received an overwhelmingly positive response.…
The contract with one ambiguous word
Two companies spent eleven months in dispute over whether 'days' meant working days or calendar days. The…
The anonymous source
A newspaper published an account based on an unnamed official and was proved right eighteen months later.…
The idiom that translated itself
Some idioms cross languages easily and some do not, and the difference is largely predictable. An idiom built…
The register that gave it away
A complaint letter containing the sentence 'I was pretty annoyed, to be honest' failed to achieve anything,…
The mark that was a ranking
A score of 68 in one examination system means a fixed standard of work. In another it means being in the top…
The skeleton in the wrong grave
A skeleton excavated in 1904 was identified from a grave marker, catalogued, and used for a century as a…
The cohort that was followed
A study that followed twelve thousand people for thirty years produced a finding that no trial could have…
The colour that was not measured
Two prints of the same photograph, made from the same file by two laboratories, differ visibly. Both are…
The invention of the exam
Written examinations feel as natural to students as the walls of a classroom, but they are an invention with…
Attention is a limited resource
Students are often told to concentrate, as though attention were a decision rather than a resource. Research…
The cost of cheap energy
Every device in a school hall runs on electricity that came from somewhere, and where it came from has…
Why cities forgot to play
Photographs of Hanoi, London or São Paulo from the 1950s share an odd feature for modern eyes: children on…
What makes a language learner
Ask a hundred people why they never learned a second language and most will say they have no talent for it.…
How a pose model sees you
Every second that the camera is on, the browser receives about thirty pictures. To a computer, each picture…
The economics of free
Nothing is free; some things are only free to the person using them. FitForm League costs a student nothing,…
Engineering for the worst classroom
Most software is designed in the condition where it works best: a new laptop, fast internet, a quiet room,…
Habit over motivation
Ask a class of thirteen-year-olds whether exercise is good for them and every hand goes up. Ask how many…
Measuring what matters
A number on a screen feels like a fact. It is not: it is the end of a long chain of decisions about what to…
From one school to a district
A pilot that works in one school proves less than it appears to. The first school has the founders walking…