computer costs about_of a typewriter.
题目
computer costs about_of a typewriter.
选项为A.the nine-time price B.nine times price C.the nine times price D.nine times the price请问选哪个及理由.
答案
选择D 这是表示倍数的句型A is N times as great(long,much,…)as B. (①) A is N times greater (longer, more,…)than B. (②) A is N times the size (length, amount,…)of B. (③)以上三句都应译为...
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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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