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In 1886 a new syrup _ (to prepare) by an American pharmacist John S. Pemberton. This syrup _ (to expect) to fight the problems of digestion. As a side effect, energy level _ (to increase). Soon, the drink _ (to become) popular and since then, it _ (to use) not to fight digestive problems alone. - The Coca-Cola, In 1928, an interesting case _ (to record). A forgetful Scottish scientist returned from a two-week vacation and _ (to find) a mold that _ (to develop) on a contaminated staphylococcus culture plate. The mold _ (to examine), and the scientist _ (notice) that the growth of staphylococci _ (to prevent) by the culture. - Penicillin, A drug that would relax blood vessels to fight angina _ (to work on) by the scientists of a biomedical company Pfizer. The results that _ (to receive) weren’t satisfactory. All they _ (get), was a very peculiar side effect. Currently, the drug _ (to sell) worldwide for billions of dollars. - Viagra, George Crum _ (to know) as a very talented New York chef. Once he _ (to criticize) by one of his diners for boring meals and he _ (to serve) a differently prepared usual dish in new shape. To his surprise, this culinary invention _ (to take) with enthusiasm by everybody. - Fried chips, In 1946, a tank radar called Magnetron _ (to investigate) by doctor Percy Spencer. One day, while working on the project, Spencer _ (to decide) to stop for something to eat. There _ (to be) a chocolate in his pants, but he could never enjoy it because it completely _ (to melt). Since then a more domestic use of the radar _ (to find) and now _ (to use) worldwide. - Microwave oven,

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