/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: catherinemai144 https://public.slidesharecdn.com/v2/images/profile-picture.png just try my best~ ²ñÃ×ÓÍÑν´´×²è Ò»µãÒ»µÎ¶¼ÊÇÐÒ¸£ÔÚ·¢Ñ¿=¡¿