谁能帮我写篇英语作文,题目为Technology is Changing our life80词左右.
题目
谁能帮我写篇英语作文,题目为Technology is Changing our life80词左右.
答案
With the development of science and technology ,our life has changed a lot.First communication has been advanced.In tha past we can communicate with others only by writing letters but now we can use cellphones .Second in the past ,if we want to see a movie ,we had to go to the cinema.But now we can watch TV at home .Finally we can surf the Internet for some information but in the past we could not get it easily.
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
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