如图，甲、乙、丙、丁四个轮廓图，读图回答问题．
小明利用图中的压强计进行探究液体内部压强的实验．
Peter likes pop music, but ________ his father ________ his mother likes it.
①要坚持绿色消费 ②要坚持科学消费 ③要遵循价值规律 ④要坚持正确的消费观
