It does sound like "D" to me

来源: 千与.千寻 于 2010-11-15 19:19:29 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (209 bytes)
本帖于 2010-11-16 01:42:07 时间, 由版主 林贝卡 编辑
回答: 回复：STV? 由 好学又好问 于 2010-11-15 19:07:52

and we don't say STV (virus) because mainly some bacteria and parasites are pathogenic as for as "Sexual Transmission Disease"

It's a very good study pattern, I 'll follow you after I finish this semester!

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