A:﹣1, 12
B:(﹣∞,﹣1
C:2,+∞)
D: 12 ,2
He wants to answer the because it is an interesting one.
下列说法正确的是 ( )
要探究水分对鼠妇生活的影响,在下列的四个实验装置中,应该选择( )