如图,把图A按( )缩小得到图B。
A:1:2
B:2:1
C:1:4
D:4:1
若x1,x2(x1<x2)是方程(x-a)(x-b)= 1(a<b)的两个根,则实数x1,x2,a,b的大小关系为( )
Gu Dong is .( )
读图回答问题。
—Were you at home yesterday?
—No, I________. I was ________ school.