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TOEFL
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Listening practice
/ Section Q8ZJ
Listen to an Academic Talk
Listen to a talk in an economics class.
Listen
41. Why does the professor describe owning the only telephone in the world?
A
To show that a phone's value depends on how many people have one
B
To compare old phones with modern apps
C
To explain how early telephones worked
D
To show that telephones used to be expensive