He dived in the water and _____ to search for his girlfriend’s lost gold ring.

A．caught his breath

B．held his breath

C．lost his breath

D．took breath

社会安全事件发生后，组织处置工作的人民政府应当立即组织有关部门并由（）针对事件的性质和特点，依照有关法律、行政法规和国家其他有关规定，采取应急处置措施。

A、公安机关

B、检察院

C、法院

D、卫生局