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TOEFL
/
Listening practice
/ Section 429M
Listen to an Academic Talk
Listen to a talk in an economics class.
Listen
41. Why does the professor mention the light bulb in Livermore?
A
To raise the question of why ordinary bulbs do not last as long
B
To explain where the cartel met
C
To describe the first light bulb ever made
D
To show that old bulbs used less electricity