—John saw a three-year-old child walking alone in a shopping mall , so he took the child home immediately and called the police .

—But he           have waited with the child until the parents returned .

A．shouldn’t

B．could

C．would

D．might

化学名为二苯基羟乙酸二乙氨基乙醇酯盐酸盐的药物是

A．贝那替秦(Benactyzine)
B．盐酸苯海索(Trihexyphenidyl Hy-drochloride)
C．哌仑西平(Pirenzepine)
D．溴丙胺太林(Propantheline Bromide)
E．樟磺咪芬(Trimetaphan Camsylate)