— May I smoke here?— No, you . This is a no-smoking room.
A:needn't
B:mustn't
C:need
D:wouldn't
0.72×1.5的积大于1.5
根据对话。判断正误。
Boy: How heavy are you?
Girl: I'm 38 kilograms.
Boy: I'm 5 kilograms heavier than you.
如图,在平面直角坐标系中,A(﹣1,5)、B(﹣1,0)、C(﹣4,3).
(1)在图中作出△ABC关于y轴的对称图形△A1B1C1.
(2)写出点A1、B1、C1的坐标.