英语作文:假如你是李东,昨天收到美国朋友harry的电子邮件.harry说他准备来中国拜访笔友.所以想了解在
题目
英语作文:假如你是李东,昨天收到美国朋友harry的电子邮件.harry说他准备来中国拜访笔友.所以想了解在
答案
DearI Harry:
Thank you for your letter .In our China has many customs .For example ,In before knocking at the door,the door is opened,in the master said,"come in" only after in the door.After taking the door,to wait for the host would you do before you sit down.The master tea for you,you must use both hands and not one hand take tea,and said a "thank you" when having a meal,owners like to let you eat more drink,you eat or drink,the more host appears to be more happy.
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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