补体结合试验的正式试验应设立的对照有()
A．血清对照
B．补体对照
C．抗原对照
D．溶血素对照
E．SRBC对照
参考答案：A, B, C, D, E
Kathy ______ a lot of Japanese while working with some Japanese engineer.
A．made up
B．took up
C．pick up
D．turned up
某演员取得一次性的演出收入22000元，按规定应实行加成征收办法计算个人所得税。( )
