______ is the branch of linguistics which studies the characteristics of speech sounds and provides methods for their description, classification and transportation.

(单选题)What can we learn from Paragraph4? (单选题)Why have Paris organizers chosen the four sports? (单选题)What do we know about breakdancing? (单选题)（ ） (单选题)If it ______ for his invitation the other day, I should not (单选题)We have been trying to train the young people who were hired (单选题)With the pressure of being off work ______, Mary seemed to b (单选题)Taking exercise, along with listening to music is a good way (单选题)The great pianist performed in the center of stage, ______ c (单选题)In social activities, it is always important to be ______, t