I've got so many problems ______ today that I'm afraid I won't have time to have lunch. [ ]

A. to handle

B. handle

C. handling

D. handled

患者，女，26岁，足月妊娠并风湿性心脏病，心功能Ⅱ级，胎头吸引助产，产后2小时 * * 出血300ml，心率110次/分，双肺呼吸音清，宫底脐下2指，对该患者正确的治疗是

A．西地兰0.2mg+25%葡萄糖20ml静脉推注
B．立即肌注麦角新碱0.2mg
C．立即开放静脉快速补液
D．立即肌注催产素10单位
E．无感染者产后不加用抗生素