39. Which of the following is NOT mentioned as a category that may cause sleep disorder?
(A) The body
(B) The mind
(C) The earthquake
(D) The environment
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統計: A(9), B(11), C(191), D(4), E(0) #1835881
統計: A(9), B(11), C(191), D(4), E(0) #1835881