問題詳情
【題組】73. According to Steve Austad at the University of Texas, ______.
(A) the average human life span could be 110
(B) scientists cannot find ways to slow aging
(C) few people can expect to live to over 150
(D) researchers are not sure how long people can live
參考答案
答案：D
難度：非常簡單1
統計：A(0),B(0),C(0),D(1),E(0)