i guess you are in nursing program right?5 s% k8 a' t. m4 F
do not use translator. some of them do not make sense. 0 b1 L( m" }! f% }$ ^4 o, ntry to use english "answer" website. it might help9 n8 t" P1 k1 c7 {$ \( V4 y
i have one but i never use it. well, leave me messages on "duan xiao xi'