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- 1have an effect in he have an effect on的区别
- 2小文用180cm的铁丝做一个长方体的框架,长、宽、高的比是4:3:2.如果在框外架包一层纸做成的纸盒,那么至少
- 3A={x|x的平方+px+q=x}B={x|(x-1)的平方+p(x-1)+q=x+3}A={2}求集合B
- 4小数化分数,分数化小数
- 5about on over都有关于的意思,但它们有什么区别呢
- 6中国的三大发明对欧洲社会最重要的影响是什么?
- 7改错:I don't know what to do it.
- 8provided that we can get a baby-sister,we will go to the theatre with you tonight.
- 9she is a trouble man?什么意思?
- 10He helped this little boy ______ his father at last