面包中可以加入的营养强化剂（）
A．赖氨酸
B．碘
C．维生素D
D．维生素C
E．维生素PP
参考答案：E
We all thought that Betty could have run _______ if she had worn the sports-shoes that day.
A．even faster
B．more slower
C．much quickly
D．still fastest
喉内部伤包括（）
A.喉挫伤
B.喉火器伤
C.喉烧伤
D.损伤性喉肉芽肿
E.气管插管后环杓关节脱位
