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TOEFL
/
Listening practice
/ Section WE96
Listen to an Academic Talk
Listen to part of a talk in a history of science class.
Listen
30. How was the metre originally defined?
A
As the length of a bar kept in Paris
B
As a fraction of the distance from the pole to the equator
C
As a fraction of the distance between Dunkirk and Barcelona
D
As a length derived from the speed of light