41. Who needs prosthetics? would be placed under the outline heading:
(A) What are prosthetics?
(B) The History of Prosthetics
(C) Materials of Prosthetics
(D) Spinoff Innovations
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統計: A(40), B(5), C(4), D(2), E(0) #2917440
統計: A(40), B(5), C(4), D(2), E(0) #2917440