作业帮英语选择题单选题（托业）,Currently,sending promotional e-mails is not necessarily illegal _____ the mail reveals its commercial intent and informs recipients of how to take themselves off the mailing list.(A)then (B)as long as (C)by (D)si
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英语选择题单选题（托业）,Currently,sending promotional e-mails is not necessarily illegal _____ the mail reveals its commercial intent and informs recipients of how to take themselves off the mailing list.(A)then (B)as long as (C)by (D)si
英语选择题单选题（托业）,
Currently,sending promotional e-mails is not necessarily illegal _____ the mail reveals its commercial
intent and informs recipients of how to take themselves off the mailing list.
(A)then (B)as long as (C)by (D)since
英语选择题单选题（托业）,Currently,sending promotional e-mails is not necessarily illegal _____ the mail reveals its commercial intent and informs recipients of how to take themselves off the mailing list.(A)then (B)as long as (C)by (D)si
选B,表示让步,as long as 翻译为“只要”
翻译：目前来说,发送促销邮件并不被违法,只要这封邮件表明了它的商业目的并且告知收件人如何删除该封邮件.
不懂可以追问.
表示since 明显语意不和...做题时要试着翻译通顺,这样才能提高正确率.
填B as long as 只要.......就.......
引导条件状语从句。
目前发商业邮件不一定是违法的，只要这些邮件显示它的商业用意而且告知收件人怎样把它们从邮件列表中删除。
选B，句子意思是“如今发送推销广告的邮件是合法的，只要邮件本身显示出了它的商业倾向，并提醒收件人怎样把它从邮件列表中删除”。
D 意思是 当前，发送推广电子邮件没有必要定为非法 是因为 邮件本身有它的商业目的，而且接收人有权将他们在邮件列表中删除。