传染性单核细胞增多症的血清中嗜异性抗体为（）
A.IgM
B.IgG
C.IgA
D.IgE
E.IgD
参考答案：A
—Let's see the penguins now. I like penguins.
—_____ ?
—They are very interesting.[ ]
A. What
B. How
C. Where
D. Why
腹膜的功能不包括()
A．分泌
B．过滤
C．吸收
D．保护
E．修复
