It's very hot today. You can ________ your coat, Jack.[ ]
A. put on
B. take off
C. wear
B
△ABC中,三内角A、B、C成等差数列,则B等于 ( )
A.30° B.60°
C.90° D.120°
阿片类物质依赖的治疗一般分两步走,即急性期的()治疗和脱毒后的()及()。关于阿片类物质依赖的替代治疗,常用的替代药物是()和()。