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TOEFL
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Listening practice
/ Section 8CAK
Listen to an Academic Talk
Listen to part of a talk in a materials science class.
Listen
28. What can be inferred about a perfectly pure and regular metal?
A
It would resist deformation better than an impure one.
B
It could not be produced by any known method.
C
It would deform more easily because nothing obstructs dislocations.
D
It would contain no dislocations at all.