1.The coast line extends about 2 thousand kilometers ___________.
题目
1.The coast line extends about 2 thousand kilometers ___________.
A.frome east to west B.frome the east to west
C.frome the east to the west D.from the eastern to the western
答案
A( from east to west) .其实我是看到过这种说法的.要说原因的话,east这类方向词和nature一样,不加冠词.你最好还是强记
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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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