Question 9 Today's industrial cities increasingly create noise pollution. Question 10 The word "music” comes from the French word, mousiké. Question 11 What is music? Question 12 Today, many experts in music would not agree that music is a universal language. Question 13 433" is known as "The Silent Piece.” Question 14 The pianist did not play the keys of the piano in his performance of 4'33". Question 15 5 out of 5 points 5 out of 5 points 5 out of 5 points 0 out of 5 points 5 out of 5 points 5 out of 5 points 5 out of 5 points You can see and hear the Hermit Thrush singing in the trees and you also see only the trees in the forest without the thrush; there is also a scene with a stream. Question 16 5 out of 5 points The audience heard coughing, airplanes, people whispering, feet shuffling, and other sounds in the infamous composition by John Cage. Question 17 0 out of 5 points
