模仿例句改写以下句子
题目
模仿例句改写以下句子
例句:
This policeman is tall.
But that policeman is taller.
He is the tallest policeman I have even seen.
题
1.This street is clean.
2.This man is old.
3.This river is long.
答案
1.This street is clean but that street is cleanerthis is the cleanest street I have even seen.2.This man is old.but that man is older.he is the oldest man I have even seen3..This river is long.but tha...
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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