2的相反数是-2.
故选A.
Cathy wonders if her teacher _______ to her house. If she _______, what will she say to her parents?
A.comes, comes
B.will come, will come
C.comes, will come
D.will come, comes
电缆穿越建筑物、构筑物、道路、易受机械损伤的场所及引出地面从2.5m高度至地下0.2m处,必须加设防护套管。( )