谁能给我写个3分钟英语3人对话啊?关于环境保护的.
题目
谁能给我写个3分钟英语3人对话啊?关于环境保护的.
答案
A:Hello!
B:Hello,it'nice to meet you.
A:It' nice to meet you,too.I called you a lot day.But the phone was busy.Where were you?
B:Well,I'm went to school and help our school janitor.
A:Did you chean the school?
B:Yes,I did.The school is very dirty!We musn't throw rubbish on the floor.We shoud throw them in the bin.
A:You are right.I remenber.
B:Yes,Goodbye!
A:Byebye!
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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