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TOEFL
/
Listening practice
/ Section CU2X
Listen to an Academic Talk
Listen to part of a talk.
Listen
46. Why might a replacement be marked discreetly?
A
So future investigators can distinguish new material from older fabric.
B
So the building can be closed to future research.
C
So visitors will mistake it for an original element.
D
So its dimensions can be hidden from architects.