Though ____a difficult and even dangerous place , Vietnam is now a friendly destination that welcomes visitors from all over the world _______.

A．considered; visiting

B．considered; to visit

C．considering ; visiting

D．considering; to visit

男性，20岁，民工，夏季喜食生冷水，于昨日下午突起剧烈腹泻，呕吐4小时，共呕吐10余次，腹泻水样便10余次，无发热，无腹痛，无里急后重，先泻后吐，量多，入院时尿量仅100ml／d

入院后立即给予的处理是（）

A.给予大剂量抗生素

B.快速静滴生理盐水

C.纠正酸中毒

D.大剂量激素

E.升压药维持静滴