A.
B.
C.U1:U2:U3=1:2:1
D.
答案:B
--I hope he won't get ill during the examinations.
--___________ . He has been very well recently.
A.Certainly
B.No
C.Not
D.Yes
企业形象识别系统(CI)包括:______,它是CI系统中的核心部分:______,是企业规定的行为标准。