i guess you are in nursing program right? * T0 O J6 t" R' xdo not use translator. some of them do not make sense. X1 L+ o5 \% x8 W' w; L
try to use english "answer" website. it might help' U6 Z0 Q2 r* h# Q, r5 P
i have one but i never use it. well, leave me messages on "duan xiao xi'