what season was it?what does his teache probably think about the weather?
题目
what season was it?what does his teache probably think about the weather?
when ice"melt"atthe poles,it---------------------
答案
现在是什么季节呢?他的老师觉得天气怎么样呢?teache这个词是不是拼写错了?
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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