16 What is the main purpose of this passage?
(A) To show what MSF most requires.
(B) To explain how MSF operates.
(C) To describe the origins of MSF.
(D) To emphasize the skills of MSF’s doctors.
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統計: A(0), B(8), C(0), D(0), E(0) #3358442
統計: A(0), B(8), C(0), D(0), E(0) #3358442