设y=f(1nx),f(x)存在二阶导数,则=()。 A.A B.B C.C D.D 发布时间:2017-05-26 06:34 │ 来源:www.tikuol.com 题型:单项选择题 问题: 设y=f(1nx),f(x)存在二阶导数,则=()。A.AB.BC.CD.D
题型:单项选择题 Jack always makes us laugh, he is much _____ than his brother. [ ]A. fun B. funny C. funnier D. funniest 查看答案