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TOEFL
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Listening practice
/ Section R6AB
Listen to an Academic Talk
Listen to part of a talk.
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45. Why does it matter what a borrowed cup replaces?
A
A disposable cup can never be replaced by a durable one.
B
The effect differs depending on whether the alternative was disposable or already reusable.
C
All customers would otherwise buy new reusable cups.
D
Borrowed cups must be identical to customers' own cups.