患者男性，65岁。高血压，发生急性剧烈胸骨后疼痛3小时，出汗，肝大，颈静脉充盈，心率120次/分，血压80/50mmHg。

使用rtPA溶栓治疗过程中，心电示波提示窦性心动过缓，心率40次/分，BP100/70mmHg。此时应做的处理有（）。

A.严密观察

B.主动脉内气囊反搏

C.停止溶栓治疗

D.口服心宝

E.静脉注射阿托品；紧急植入临时心脏起搏器

F.滴注去甲肾上腺素

The government has hardly taken measures to crack down on these crimes when new ones occurred.

A．Hardly had the government taken

B．The government had hardly taken

C．Hardly the government had taken

D．The government is hardly taking