________ to nuclear radiation,even for a short time,may produce v_英语解答

________ to nuclear radiation,even for a short time,may produce variants of genes in human body.
A..Being exposed B.Hacing exposed C.Exposed D.After being exposed
选哪个,理由

人气：474 ℃　时间：2020-05-14 23:20:08

解答

C
句中主语为人,可知应用被动语态.时态方面,显然不是进行时A不选,无从过去持续到现在的意思B不选.D语义错误,在暴露于核辐射之后,即使是很短的一段时间,语义明显不通顺D不选.所以选C.