分式题不会,I need you to me help!a/1-b/1=b-a/1求a/b+b/a=?

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• 分式题不会,I need you to me help!a/1-b/1=b-a/1求a/b+b/a=?
• 英语三道选择题求解答1 Do you need any help , Lucy?Yes. The job is ______ I could do myself.A less than B more than C no more than D not more than 2 I was surprised by her words, which made me recognize_____silly mistakes I had made.A what B that C how D which3 Life was difficult for the family then but things_____better and better over the years.A got B were getting C have got D would got .求老师解答的时候带点文字叙述 为什么这么选 能翻译下更好. 谢谢
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