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- 1用没有.就只好.造句
- 2抛物线顶点在原点,焦点在y轴上,其上一点P(m,1)到焦点距离为5,则抛物线方程为_.
- 31 .What a t_____ caugh ! You had better go to see a docter .2.There is much t ____ at rush hour .
- 48.68/0.56-6.4*2.35 0.22*1.5+2.144-0.99 1/2.5+2.
- 5I work and study hard every day中every day 是什么语?
- 6物质的量之比为2:5的锌与稀硝酸反应,若硝酸被还原的产物为N2O,反应结束后锌没有剩余,则该反应中被还原的硝酸与未被还原的硝酸的物质的量之比是( ) A.1:4 B.1:5 C.2:3 D.2:5
- 7Jenny has a great c-------of story books.
- 8都说主族序数等于最高正价(除O,F)那么副族序数不等于元素最高正价码?
- 9求沈尹默《秋》
- 10英语翻译