A:生产决定消费的对象
B:生产决定消费的方式
C:生产决定消费的质量和水平
D:生产为消费创造动力
阅读下列短文,从每小题的三个选项中选出最佳答案
It is morning now. Look at the sun, it rises in the east(东方). Look at the tree, the shadow is long. It is noon now. The sun is high in the sky. It is very hot. Look at the tree. The shadow is short. It is evening now. The sun goes down in the west(西方). Look at the tree, the shadow is long again. It is night now. The moon is high in the sky. There are some stars in the sky too.
已知:0为圆心,直径10厘米,三角形AOC的面积是12平方厘米。