一篇关于我第一次乘火车旅行的英语作文
题目
一篇关于我第一次乘火车旅行的英语作文
答案
Air travel has two advantages over train travel.First,it can save much time.We can fly from Beijing to Guangzhou jusi in two hours,but by train,we have to spend 24 hours or more.Second,air travel is more comfortable,because the plane flies so smoot qly that we can rest well during the trip,while the train is crowded sometimes and passengers have to sit for a long time,which makes them tired.But train travel also has its advantages.For example,traveling by train costs only 250 yuan while traveling by air will cost 900 yuan.Besides this,outside of the train's windows,we can enjoy the views of many big cities,such as Zhengzhou,Wuhan,ad Changsha.
So I think different people like different ways of traveling.
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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