12. The ________ epidemic prevention help keep the virus at bay.
(A) venomous
(B) lethargic
(C) lavish
(D) scrupulous
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統計: A(5), B(1), C(5), D(18), E(0) #3109985
統計: A(5), B(1), C(5), D(18), E(0) #3109985