39. According to the passage, what is the most difficult part of the anorexia treatment?
(A) Patients refuse to admit their problems.
(B) There are few anorexia specialists.
(C) Effective medicine is costly.
(D) It is difficult to identify the symptoms.
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統計: A(389), B(9), C(4), D(8), E(0) #2752409
統計: A(389), B(9), C(4), D(8), E(0) #2752409