16 What is this story mainly about?
(A) A neck dissection surgery.
(B) Radiation side effects.
(C) An earthquake experience.
(D) A cancer treatment.
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統計: A(69), B(21), C(14), D(180), E(0) #2771181
統計: A(69), B(21), C(14), D(180), E(0) #2771181