Прочитайте текст и выполните задания. How Batteries Work 1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy…

Прочитайте текст и выполните задания. How Batteries Work 1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications. 2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts. 3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers. 27. Чтение / Ознакомительное чтение с целью определения истинности утверждения Определите, какое утверждение соответствует содержанию текста: (a) The conversion of chemical energy into electrical makes batteries the source of power. (b) The capacities of batteries surpass other energy sources. (c) Batteries are a comparatively new source of energy. (d) People use batteries because they don't have an alternative source of power. 28. Чтение / Изучающее чтение с элементами аннотирования Завершите утверждение согласно содержанию текста: Несколько правильных вариантов Batteries' long life is provided by… (a) people's careful service (b) their stored power (c) the possibility of its recharging (d) the peculiarity of chemical reaction taking place inside them 29. Чтение / Изучающее чтение с элементами анализа информации. Ответьте на вопрос: Why do people use batteries? (a) Batteries represent a potential source of energy. (b) People use batteries due to their convenience and significance of application. (c) People use batteries to meet their personal needs. (d) Batteries are used for many industrial and household applications. 30. Чтение / Изучающее чтение с выделением главных компонентов содержания текста Определите основную идею текста. Укажите один вариант ответа (a) Battery represents a potential energy source as it can be stored for some time and still be powerful. (b) An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. (c) Battery has become a common power source due to peculiarity of its energy generation as well as simplicity and significance of its application. (d) People can't do without batteries nowadays as they are used to power some important devices.