方程x2-2x=0的根是( )
A.x1=2,x2=0
B.x1=-2,x2=0
C.x=2
D.x=-2
∵x2-2x=0,即x(x-2)=0,
∴x1=2,x2=0.
故选A.
_________ is the last month of the year.[ ]
A. December
B. November
C. January
两种相关联的量不成正比例,就成反比例.______.