問題詳情

26. For thousands of years, people ______ that no two people have the same fingerprints.
(A) knew
(B) know
(C) had known
(D) have known

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)