She works in East ( ). His ( ) is across from the police station. 填空
题目
She works in East ( ). His ( ) is across from the police station. 填空
答案
She works in East America.她在美国东部工作.
His office is across from the plice station.他的办公室在警察局对面.
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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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