He failed in the driving test again. He         .

A．must have disappointed

B．must have been disappointed

C．might be disappointed

D．couldn’t be disappointed

奠定中国医学人道传统的文献是（）

A.《黄帝内经》

B.宋国宾《医业伦理学》

C.孙思邈《备急千金要方》

D.希波克拉底《希波克拉底誓言》

E.帕茨瓦尔《医学伦理学》