阿摩線上測驗
15. Severe _____ reactions to vaccines are rare and difficult to predict, generally occurring at a rate of
approximately one event per million cases.
(A) distinctive
(B) subjective
(C) transparent
(D) allergic
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統計： A(52), B(45), C(14), D(218), E(0) #2897517
統計： A(52), B(45), C(14), D(218), E(0) #2897517
