Pratica di Shadowing: Cambridge Ielts 16 Reading test 2 Passage 2 - Impara a parlare inglese con i video

Creazione lezione...
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contain multitudes.
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Wendy Moore reviews Ed Yong's book about microbes.
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Microbes, most of them bacteria, have populated this planet since long before animal life developed and they will outlive us.
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Invisible to the naked eye, they are ubiquitous.
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They inhabit the soil, air, rocks and water and are present within every form of life, from seaweed and coral to dogs and humans.
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And, as Yong explains in his utterly absorbing and hugely important book, we mess with them at our peril.
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Every species has its own colony of microbes,
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called a microbiome, and these microbes vary not only between species but also between individuals and within different parts of each individual.
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What is amazing is that while the number of human cells in the average person is about 30 trillion, the number of microbial ones is higher about 39 trillion.
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At best, Jung informs us, we are only 50% human.
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Indeed, some scientists even suggest we should think of each species and its microbes as a single unit, dubbed a holobiont.
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In each human there are microbes that live only in the stomach, the mouth or the armpit and by and large they do so peacefully.
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So, bad microbes are just microbes out of context.
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Microbes that sit contentedly in the human gut, where there are more microbes than there are stars in the galaxy, can become deadly if they find their way into the bloodstream.
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These communities are constantly changing too.
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The right hand shares just one-sixth of its microbes with the left hand.
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And, of course, we are surrounded by microbes.
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Every time we eat, we swallow a million microbes in each gram of food.
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We are continually swapping microbes with other humans, pets and the world at large.
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It's a fascinating topic and Yang, a young British science journalist, is an extraordinarily adept guide.
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Writing with lightness and panache, he has a knack of explaining complex science in terms that are both easy to understand and totally enthralling.
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Yang is on a mission.
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Leading us gently by the hand, he takes us into the world of microbes a bizarre, alien planet in a bid to persuade us to love them as much as he does.
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By the end, we do.
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For most of human history we had no idea that microbes existed.
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The first man to see these extraordinarily potent creatures was a Dutch lensmaker called Antony van Leeuwenhoek in the 1670s.
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Using microscopes of his own design that could magnify up to 270 times,
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he examined a drop of water from a nearby lake and found it teeming with tiny creatures he called animalcules.
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It wasn't until nearly 200 years later that the research of French biologist Louis Pasteur indicated that some microbes caused disease.
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It was Pasteur's germ theory that gave bacteria the poor image that endures today.
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Young's book is in many ways a plea for microbial tolerance, pointing out that while fewer than 100 species of bacteria bring disease,
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many thousands more play a vital role in maintaining our health.
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The book also acknowledges that our attitude towards bacteria is not a simple one.
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We tend to see the dangers posed by bacteria, yet at the same time we are sold yogurts and drinks that supposedly nurture, friendly, bacteria.
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In reality, says Yang, bacteria should not be viewed as either friends or foes, villains or heroes.
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Instead we should realize we have a symbiotic relationship, that can be mutually beneficial or mutually destructive.
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What then do these millions of organisms do?
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The answer is pretty much everything.
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New research is now unraveling the ways in which bacteria aid digestion, regulate our immune systems, eliminate toxins,
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produce vitamins, affect our behavior and even combat obesity.
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They actually help us become who we are, says Young.
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But we are facing a growing problem.
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Our obsession with hygiene, our overuse of antibiotics and our unhealthy,
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low-fiber diets are disrupting the bacterial balance and may be responsible for soaring rates of allergies and immune problems, such as inflammatory bowel disease, IBD.
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The most recent research actually turns accepted norms upside down.
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For example, there are studies indicating that the excessive use of household detergents
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and antibacterial products actually destroys the microbes that normally keep the more dangerous germs at bay.
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Other studies show that keeping a dog as a pet gives children early exposure to a diverse range of bacteria, which may help protect them against allergies later.
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The readers of Yang's book must be prepared for a decidedly unglamorous world.
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Among the less appealing case studies is one about a fungus
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that is wiping out entire populations of frogs and that can be halted by a rare microbial bacterium.
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Another is about squid that carry luminescent bacteria that protect them against predators.
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However, if you can overcome your distaste for some of the investigations, the reasons for Yang's enthusiasm become clear.
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The microbial world is a place of wonder.
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Already, in an attempt to stop mosquitoes spreading dengue fever a disease
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that infects 400 million people a year mosquitoes are being loaded with a bacterium to block the disease.
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In the future, our ability to manipulate microbes means we could construct buildings with useful microbes built into their walls to fight off infections.
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Just imagine a neonatal hospital ward coated in a specially mixed cocktail of microbes
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so that babies get the best start in life.
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Vocabolario e note di pronuncia per questa lezione

Questo video contiene 59 frasi e 895 parole da ripetere con lo shadowing. Il parlato dura 5:24. Chi parla ha un ritmo naturale di circa 166 parole al minuto, vicino a una conversazione quotidiana. Solo il 73% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo.

Vocaboli chiave di questo video

15 parole del video che vale la pena imparare, con pronuncia e significato:

ParolaPronunciaSignificato
indicate verbo/ˈɪndɪˌkeɪt/indicare
immune aggettivo/ɪˈmjuːn/immune
mutually avverbio/ˈmjut͡ʃuəli/vicendevolmente
mosquito sostantivo/məsˈki.toʊ/zanzara
allergy sostantivo/ˈæl.əɹ.d͡ʒi/allergia
topic sostantivo/ˈtɑpɪk/tema, categoria
household aggettivo/ˈhaʊshoʊld/domestico, casalinghi
pet sostantivo/pɛt/animale da compagnia, animale d'affezione
exposure sostantivo/ɪkˈspəʊ.ʒə(ɹ)/esposizione
naked aggettivo/ˈneɪkɪd/nudo, ignudo
soil sostantivo/sɔɪl/suolo, terra
stomach sostantivo/ˈstʌmək/stomaco
journalist sostantivo/ˈd͡ʒɝnəlɪst/giornalista
sixth aggettivo/sɪksθ/sesto, sesta
vital aggettivo/ˈvaɪtəl/vitale

I phrasal verb che sentirai

ParolaSignificato
point out verboadditare
wipe out verboobliterare, spazzare via

Pronuncia a cui fare attenzione

  • I suoni “th”: sixth /sɪksθ/, enthusiasm /ɪnˈθuziæzəm/, unhealthy /ʌnˈhɛl.θi/, enthrall /ɪnˈθɹɔːl/
  • I suoni “sh” e “zh”: exposure /ɪkˈspəʊ.ʒə(ɹ)/, infection /ɪnˈfɛkʃən/, beneficial /ˌbɛn.ɪˈfɪʃ.əl/, specially /ˈspɛʃəli/, obsession /əbˈsɛʃən/
  • Parole lunghe — attenzione all’accento: eliminate /ɪˈlɪm.ɪ.neɪt/, invisible /ɪnˈvɪzəb(ə)l/, beneficial /ˌbɛn.ɪˈfɪʃ.əl/, enthusiasm /ɪnˈθuziæzəm/, supposedly /səˈpoʊ̯.zɪd.li/

Come esercitarsi con questo video

  1. Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
  2. Inizia a velocità 0,75×, fai shadowing frase per frase e torna alla velocità normale quando diventa facile.
  3. Registrati e confronta con l’originale, facendo attenzione a parole come indicate, immune, mutually.

Cos'è la tecnica dello Shadowing?

Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.

Tecnica dello shadowing: leggi la guida completa passo dopo passo →