Peter is twenty years old,but he has only five birthdays.Why?Because he was born____
题目
Peter is twenty years old,but he has only five birthdays.Why?Because he was born____
A.at night
B.five years ago
C.on the fast night of a yezr
D.on February29
答案
D.on February29
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