Lots of rescue workers were working around the clock,       supplies to Yushu, Qinghai Province after the earthquacke.

A．sending

B．to send

C．having sent

D．to have sent

哌替啶的阿托品样作用包括()

A．抑制胃肠蠕动

B．抑制涎液分泌

C．心率可增快

D．使瞳孔散大

E．对呼吸有明显的抑制作用