​ To wonder  /ˈwʌndə/- to think about the reason why 

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​ A story /ˈstɔːrɪ/ - history

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​To go back /gəʊ bæk/ - to date back to a certain time

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​ Durable cotton /ˈdjʊərəbl kɒtn/ - a natural fabric that resists wear and tear

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​ A manual worker /ˈmænjʊəl ˈwɜːkə/ - a person whose job involves physical labour

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​ A big hit /bɪg hɪt/ - a huge success  

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​ Task 1. Fill in the table.

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​The story of jeans goes back to the 19th century when sailors from Genoa, Italy wore durable cotton and wool denim trousers. Then, in 1853, 24-year-old Levi Strauss travelled to San Francisco from Germany and decided to design trousers for manual workers from this material. They were a big heat, and by the 1950s jeans had become very popular with a whole generation of young people. At first, many places such as theatres and restaurants banned them. Nowadays, jeans are a staple item of clothing in everyone’s wardrobe!

​Text 1. Jeans

​ Text 2. Potato chips

​In 1853, George Crum was working as a chef at a restaurant in New York. One day, a customer sent Crum’s French fries back to the kitchen, saying they were too thick. Crum got very angry and decidedto take revenge on the fussydiner; he made a new batch of fries so thin and crispy that the customer couldn’t eat them with a fork! To George’s surprise, the guest was thrilled with them and other diners began asking forthem, too. Fast-forward to the 21st century and, in the US alone, sales of potato chips amount to over $6 billion per year.

​Text 3. Coca-cola

​John Pemberton, a pharmacist from Georgia, invented the original Coca-Cola formula in a three-legged brass kettle in his backyard! The soft drink was first sold as a medicine in a chemist’s on 8th May, 1886. Dr Pemberton sold about 9 servings each day. He made about $50 in the first year, but unfortunately it cost him about $70 to make the cola! In 1887, a businessman bought the formula and by 1900 sales had risen by over 4000%. Coca-Cola remains the most famous soft drink in the world, but its exact ingredients are still a trade secret!