____you understand this rule, you will have no further diffi

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____you understand this rule, you will have no further difficulty A once B for C since D unless
为什么不选since,翻译成“既然你理解了这个规则,你将不会再有什么困难”
我知道A翻译成“一旦”，但我想知道为什么C不行，谢谢

此题不很好,我认为AC都可以选,不用过分分析了.since表示原因的语气比较一般,because最强,as最弱（用于告诉众所周知的原因）,回答why的只能用because.例如：As China has a large population...由于...这个是大家都知道的原因,语气较弱,所以用as和since,如果告诉的是不为人知的原因,多用because He was late for the meeting,because he...

____you understand this rule,you will have no further diffic （）you have understand this rule,you have no further difficu ________ you understand the rule,you will have no further di _______ you understand this rule,you’ll have no further diff once you understand this rule,you'll have no further difficu 1.__you understand the rule,you will have no further difficu ( )you understant this rule ,you'll have no further difficul you have no idea what a trouble i had ____you this present A ____you drive,____accidients you will have. ____you read this,thousands of pictures will have been sent No one will understand,no one will help you,come No,I'd love to,but you have to understand me,I will as soon