My____(小的) sister is only one.
fx是R上以2为周期的奇函数,当x∈0,1时fx=log21x-1,则fx在x∈3,4时是( )
如图,点A,B,C,D在⊙O上,∠ABO=40°,∠BCD=112°,E是AD中点,则∠DOE的度数为____ .