猜你喜欢
- 1when you are tired,you should not ( ) ( )这两个空里填熬夜的单词
- 2一架飞机在5分钟内飞行了72千米,它的速度是多少千米/小时?和多少米/秒?
- 3We shouldn't watch too much TV_____films.
- 4Tom and Tim are good firiends.翻译成否定句和肯定句
- 5At the last moment,I can only say to you :"Baby,Goodbye!
- 6there are many differences between
- 7质量为5000KG的汽车在t=0时刻的速度Vo=10m/s,随后以P=60000w的额定功率沿平直公路继续前进,经过72s达到最大速度,设汽车受恒定阻力,其大小为2500N.
- 8过ΔABC的顶点C作任一直线与边AB及中线AD分别交与点F和E,过点D作DM//FC交AB于点M.
- 9已知函数f(x)=3x2-2x,数列{an}的前n项和为Sn,点(n,Sn)(n∈N*)均在函数f(x)的图象上 (1)求证:{an}为等差数列; (2)设bn=3/an•an+1,Tn是数列{bn}的前n项和,求使得Tn<m/20对所有n
- 10郑振铎海燕如何描写海燕在海上憩息的?字里行间表达了作者怎样的感情?