阿摩線上測驗
8. The capricious nature of the virus has profoundly prolonged the development of the vaccine.
(A) mercurial
(B) notable
(C) prospective
(D) subtle
(E) tangible
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統計： A(79), B(5), C(7), D(5), E(14) #2349753
統計： A(79), B(5), C(7), D(5), E(14) #2349753
