問題詳情

1. Virus is not ______ to naked eyes. You need a microscope to observe it.
(A) visible
(B) primary
(C) conscious
(D) various

參考答案

答案:A
難度:簡單0.815789
統計:A(62),B(6),C(5),D(1),E(0)

內容推薦

內容推薦