能介导ADCC作用的Ig有（）
A.IgG
B.IgM
C.血清型单体IgA
D.IgD
E.寄生虫抗原特异性IgE
参考答案：A, C, E
To gain honor for our country, we will try our best_____ the game.
A．competing in
B．competing against
C．to compete with
D．to compete in
波动度（）
A.
B.
C.
D.
E.
