He _____and his friends took her to hospital just now.[ ]

A. felt excited    

B. became interested      

C. became happy    

D. felt sick

使用（）时，操作者的双手、手套及工具等不得沾染油脂。

A.氢气瓶

B.氧气瓶

C.液化石油气钢瓶

D.氮气瓶