問題詳情
5. Due to the _____ nature of the late-onset Alzheimer’s, scientists have not yet fully
comprehended the sign of early development and often have difficulty identifying the
onset of the disease.
(A) sardonic
(B) synaptic
(C) seraphic
(D) sporadic
參考答案
答案：D
統計：A:0,B:0,C:1,D:3,E:0
難度：計算中