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- 1There was a heavy rain yesterday.( 改为同义句)
- 2已知{an}为递增的等比数列,且{a1,a3,a5}属于{-10,-6,-2,0,1,3,4,16},(1)求数列{an}的通项公式.(2)是否存在等差数列{bn},使得a1bn+a2b(n-1)+a3b(n-2)+…+anb1=2^(n+
- 3双子叶植物根的初生结构和茎的初生结构有什么异同?
- 4he gave them clothes and food without which they___of hunger and cold.a.wuold have died b.would di
- 5二次函数y=mx2+2x+m-4m2的图象过原点,则此抛物线的顶点坐标是_.
- 6一个数的因数个数是(),一个数的倍数个数是()?
- 7自然数和整数的意义是一样的吗?是不是想0,1,2,3,这样的数,没有小数.
- 8商一定,被除数和除数成正比例._.(判断对错)
- 9点M是等边三角形ABC内的一点,MA=4,MB=2倍根号3,MC=2求角BMC的度数?
- 10简介.(是英文介绍的!)