为尽可能挽救遇险人员的生命，地震灾害事故在救援初期应尽量使用铲车、吊车、推土机等大型施工机械车辆。（）
参考答案：错
It is only when an NBA player has aged and been through many battles ______ he learns an important lesson: there is no “I” in “team”.
A．after
B．before
C．what
D．that
属于第二类精神药品的是（）
A.γ-羟丁酸
B.艾司唑仑
C.麻黄素
D.吗啡阿托品注射液
