题目

的倒数是(     ) A．    B．﹣  C．    D．﹣ 答案： C 【考点】倒数． 【分析】乘积是1的两数互为倒数，依据倒数的定义回答即可． 【解答】解：的倒数是． 故选：C． 【点评】本题主要考查的是倒数的定义，掌握倒数的定义是解题的关键．—What is your brother like ？    —_________A．He is fine, thank you.B．He likes doing his homework now. C．He is friendly and helpful. D．He is a famous doctor.