In the UK, a lady usually doesn't like to be asked ___.
A:whether has she got married
B:how old is she
C:where she comes from
D:how much she weighs
若x+1+y-3=0,则(x-1)2+(y+3)2=____.
周末,小陈同学陪妈妈逛商场,看到下图情景,向妈妈解释了产生这一情景的下列几种原因,其中合理的是( )
一元二次方程x2﹣4x+4=0的解是____.