Which is the best of the three?The green one is the best.
题目
Which is the best of the three?The green one is the best.
1.(Summer,the four,seasons)
2.(worse,the five,The blue ones）
改写句子,用上面的单词换
答案
Which is the best of the four seasons?Summer is the best.
Which is the worst of the five?The blue ones are the worst.
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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