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- 1昆虫记将()世界化作供人类获得()、()、()和()的美文. 谢谢啦!
- 2在循环小数0.abc ,abc中,小数部分前90位上的数字和是300 ,这个循环小数循环节最大是多少,最小是多少
- 3I feel happy ,when I get high marks in the exams.错在哪里?
- 4平行四边形ABCD中,AB⊥BD,AB=2,BD=根号2,沿BD将△BCD折起,使二面角A-BD-C是大小为锐角α的二面角,
- 5断言的近义词
- 6这句英文喻意是什么?life was much easier when apple and blackberry were just fruits
- 7-Write to me when you have time.-Sure.But ___ is your e-mail address.
- 8求翻译中译英
- 9函数y=a的x^2-9次幂图像是怎样的?
- 10在△ABC中,a,b,c分别是三个内角A,B,C的对边.若a=2,C=π4,cosB/2=255. (1)求角B的余弦值; (2)求△ABC的面积S.