为什么要说the building being built is our library而不说the building built is our library
题目
为什么要说the building being built is our library而不说the building built is our library
答案
the building being built is our library正在建造中的
the building built is our library已经建造完工的
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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