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Listening practice
/ Section LYZT
Listen to an Academic Talk
Listen to part of a talk in a textile history class.
Listen
29. What is the main point of the talk?
A
Blue dye required a chemical conversion, and that is why it behaved differently.
B
Blue plants were rarer than plants giving other colors.
C
Early dyers understood the chemistry of the materials they worked with rather well.
D
Most dyes were used only by professionals.