There is duck in front of two ducks.There is a duck between two ducks.There is a duck behind two duc
题目
There is duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there?There are
答案
d in front of 2
d between 2
d behind 2
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点
- 请帮我写一篇叫做地震中的父与子的读后感
- 已知数列{An}的前n项和为Sn,又有数列{Bn},他们满足关系b1=a1,对于n包含于N*有an+Sn=n,b(n+1)=a(n+1)-an,求证:{Bn}是等比数列,并求其通项公式!
- 1平方厘米等于多少米
- 对sin(x-π/4)求导,得出cos(x-π/4)*1.为什么(x-π/4)的导数是1
- 1.小红想用一张长20厘米,宽16厘米的长方形彩纸减半径为2厘米的圆,最多能剪几个?
- “证书”英语怎么说?
- 成语 ()兵株马?
- 一个扇形的弧长是20πcm,面积是240πcm2,求扇形的半径R和圆心角度数n.
- 小肠内的突起结构称为_______.这些结构的作用是增加小肠内壁的_______,有利于吸收.
- 判断下面各题中的两个量是否成比例,成什么比例?并说明理由.1.除数一定,被除数和商.2.分数