1 Pandemic accelerated advances in vaccine technology open up possibilities for combating _________of
diseases.
(A) a kind
(B) an attire
(C) an array
(D) a ratio
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統計: A(22), B(12), C(45), D(17), E(0) #3118614
統計: A(22), B(12), C(45), D(17), E(0) #3118614