Each kiva had a fire pit and hole that was believed to lead to the underworld.The largest puebloshad
题目
Each kiva had a fire pit and hole that was believed to lead to the underworld.The largest puebloshad five stories and more than 800 rooms.
The word "stories" is closest in meaning to which of following?
(A) articles
(B) tales
(C) levels
(D) rumors
答案
C 明显是楼层的意思,后面说有几间房了.
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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