Nielsen and anther ailing collegue were picked up from the South Pole in
题目
Nielsen and anther ailing collegue were picked up from the South Pole in
the coldest landing ever attempted there 特别是这句the coldest landing ever attempted there ever attempted there
答案
Nielsen and anther ailing collegue were picked up from the South Pole in the coldest landing ever attempted there.尼尔森和另一个生病的同事在南极最冰冷的登陆点被接走了,(他们）此前曾在这里作过（营救）尝...
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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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