阿摩線上測驗
18. Many scientists who study aging believe that biomedical breakthroughs may prolong life and enhance _______ in old age is valuable.
(A) dynamism
(C) force
(B) animation
(D) vitality
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統計： A(1), B(0), C(0), D(0), E(0) #3364182
統計： A(1), B(0), C(0), D(0), E(0) #3364182
