当x=5时,原式=45-1=1.
故答案是1.
人们常说“教育有法而教无定法”,这反映教师劳动具有( )
A.连续性特点
B.示范性特点
C.长期性特点
D.创造性特点
Mr. Wang is very friendly, and ______ like him very much.[ ]
A. we
B. us
C. our
D. ours