FAD中所含的维生素是（）
A．维生素B1
B．维生素B2
C．维生素B3
D．泛酸
E．维生素PP
参考答案：B
Much disappointed as he is _______ in the job interview, he still keeps his confidence.
A．failed
B．to have failed
C．having failed
D．Failing
我国主要的戒毒模式有哪些？
