Because bacteria are invisible to the () eye, it was only relatively recently in human history that we even became aware of their existence.
Because bacteria are invisible to the () eye, it was only relatively recently in human history that we even became aware of their existence.
A.naked
B.bare
C.common
D.natural
正确答案:naked
Tag:大学英语词汇解析
时间:2022-01-01 14:46:10