50. The next paragraph is probably about _______.
(A) the debate over the new laws
(B) the pathological research on kidney transplant
(C) British legal system
(D) the illegal immigrants who sell kidney
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統計: A(182), B(19), C(18), D(24), E(0) #1284913
統計: A(182), B(19), C(18), D(24), E(0) #1284913