50字左右就够了~
题目
50字左右就够了~
答案
Thomas Edison lost his first job.For the next five years he went around the country from job to job.At last Edison went to New York.He had little money.He could not buy enough food to eat.He had no place to sleep.
For many days Edison looked for work.He was hungry.At last he found work fixing machines.He could fix the old machines.He also made new ones.The headman liked Edison?s new machines.He was going to give Edison $40,000 for them.Edison would now have money to do what he wanted.
Thomas Edison was then 23.He used the money to build a shop in New Jersey.He had many people working for him.But he worked more than any of them.He rested very little.Soon he was making more than 40 new things at one time.
In 1876 Alexander Graham Bell made a telephone.But it could carry voices only a little way.Edison wanted to make a better telephone.He soon made one.It could carry voices a long way.
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