問題詳情

96.Microscopes are used in medical research labs for studying bacteria or ______ that are too small to be visible to the naked eye.
(A) agencies
(B) codes
(C) germs
(D) indexes

參考答案

答案：C
難度：簡單0.806452
統計：A(2),B(3),C(50),D(5),E(0)