how to choose chinese in drop-line gnome?

 .profile
export LC_CTYPE=zh_CN
#export LC_ALL= # make sure LC_ALL is not set
export LC_ALL=zh_CN.gbk
export LANG=zh_CN.gbk
export XMODIFIERS=@im=fcitx
alias mlterm='LC_ALL=zh_CN LANG=zh_CN XMODIFIERS=@im=Chinput mlterm &'
alias bbs='LC_ALL=zh_CN LANG=zh_CN XMODIFIERS=@im=Chinput mlterm -T BBS -e telnet http://www.mitbbs.com &'
alias fcitx='LC_ALL=zh_CN LANG=zh_CN XIM=fcitx XIM_PROGRAM=fcitx XMODIFIERS=@im=fcitx fcitx &'