在用FLASH制作渐变动画时，要使组合体或文字的颜色渐变，必须先将它们转换为（）。
参考答案：元件
Fully _____ in looking after three children at home, she no longer has time to enjoy various activities in the club.
A．attached
B．occupied
C．contributed
D．devoted
Internet标准(STD)是由( )负责制定的。
A．IAB
B．IETF
C．NIC
D．IANA
