A:Heard it
B:Made it
C:Forgot it
D:Got it
0.8×0.7=____
0.9×0.05=____
0.3×0.4=____
1.2×0.3=____
0.04×0.6=____
0.16×0.5=____
0.6×0.9=____
2.4×0.5=____
0.015×0.4=____
在平面直角坐 标系xOy中,已知点A(2,3),若将OA绕原点O逆时针旋转180°得到 ,则点 在平面直角坐标系中的位置是在( )
____ (judge) from his ____ (excite) news, his friends have found the key to ____ (solve) the problem.