题干
________ a beautiful singing voice, so she was encouraged to apply for the program of vocal music.
A：Born in
B：Having born in
C：Being born with
D：She was born with
答案(点此获取答案解析）
D
是奇函数，当 
时， 
，当 
时， 
的最小值为1，则a的值等于（ ）