Yang Liwei ______ about twenty-one hours in ______ around the earth fourteen times. [ ]

A. took; going

B. spent; going

C. cost; to go

D. took; to go

对重症酒精性肝炎患者，下面哪项可暂时缓解症状及改善生化指标（）。

A.谷氨酰胺

B.头孢他啶

C.泛昔洛韦

D.水飞蓟素

E.甲泼尼松龙