helping each other makes the world wonderful为题写作文
题目
helping each other makes the world wonderful为题写作文
短一点就行了但不要太短
答案
last week ,I went to the library on the way ,I saw a Blind Man want to across the road ,but he looks very anxiety ,because his eyes couldn't saw the road ,when he was so mazed that he didn't know what to do ,a young man walked beside him to helps across the road ,Smiles appeared on their faces ,at that moment ,I think helping each other makes the world wonderful !
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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