A:感冒病毒
B:乳酸菌
C:变形虫
D:肺炎双球菌
如图,在直角坐标系中,△ABC的各顶点坐标为A(﹣1,1),B(2,3),C(0,3).现以坐标原点为位似中心,作△A′B′C′,使△A′B′C′与△ABC的位似比为23.则点A的对应点A′的坐标为____
若实数a,b,c满足a+b+c=0,且a<b<c,则函数y=cx+a的图象可能是( )
— Mom, my classmates invited me ____ a field trip. May I go with them?
— OK.