 109  7. Do you like Latin American dancing? Do you want to dance like you see in the films and on the stage? Do you want to feel the rhythm of the music in your body and in your soul? Do you want to meet other people who have a love for the same music as you? If you have answered “Yes” to any of these questions, join our Latin dance classes on Thursday night between seven and ten. All are welcome.
B3 - Прочитайте текст и заполните пропуски 1—6 частями предложений А — G. Одна из ^ частей в списке А — G лишняя. Перенесите ответы в таблицу._ The science of sound, or acoustics, as it is often called, has been made over radically within a comparatively short space of time. Not so long ago the lectures on sound in colleges and high schools dealt chiefly with the vibrations of such things as the air columns in organ pipes. Nowadays, however, thanks chiefly to a number of electronic instruments engineers can study sounds as effectively 1_. The result has been a new approach to research in sound. Scientists have been able to make far-reaching discoveries in many fields of acoustics 2_ Foremost among the instruments that have revolutionized the study of acoustics are electronic sound-level meters also known as sound meters and sound-intensity meters. These are effective devices that first convert sound waves into weak electric signals, then amplify the signals through electronic means 3_. The intensity of a sound is measured in units called decibels. “Zero” sound is the faintest sound 4 _. The decibel 109 |
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