51. What is the passage mainly about?
(A)Food safety incidents in Asia.
(B) Food safety as a global issue.
(C) Food safety and the development level of a place.
(D)Food safety standards in European countries.
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統計: A(2), B(86), C(11), D(5), E(1) #934359
統計: A(2), B(86), C(11), D(5), E(1) #934359