1A dictionary is a very good t___ when we learn English,
题目
1A dictionary is a very good t___ when we learn English,
2 people all over the world call for peace ,but hate w------ 3the write decides to r---- the story because some boys don't like it 4 the doctor decided to give the boy complete t-----
答案
tool 工具
war 战争
revise 修改
treatment 治疗
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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