—Didn't you go to the zoo last Sunday? —_______. I stayed at home all day.
A:Yes, I did.
B:Yes, I didn't
C:No, I didn't
D:No, I did.
7560000000____ 980000000____
12540000000____ 1452000000____
根据实际情况填写适合的单位或数值:①一个苹果大约是150____ ;②水的密度是____ g/cm3; ③教室门的高度约为2____ .
圆(x﹣1)2+(y﹣1)2=1的圆心的极坐标是( )