Test # 30
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760 questions in 76 tests. Each test contains 10 questions.
Idiom of the Day
in the mainstream
following trends or styles that are currently popular or common
My brother has never been in the mainstream when it comes to working and raising a family.
Most Amazing Roads
Rules to play Knee Boarding
Rules to play Bocce Ball
Essential Tips For Job Success
This is a scientific instrument, based on the principles of beat frequency.In its early form, the volume was controlled by a foot pedal. But now it is changed by moving the hands near a metal loop. The theremin succeeded in attracting attention; in the 1930s RCA distributed it in the US. It was even used in several movie soundtracks and included in songs during the 1960s. One example is the song "Good Vibrations" by the Beach Boys.