第8题: [单项选择]C5a的生物学活性是() A. 参与膜攻击单位的形成 B. 趋化作用 C. 促C3转化酶形成 D. 调理作用 E. 促CT酯酶形成 参考答案:B
第9题: [填空题]A. I am awfully sorry. B. Not at all. C. It’s my pleasure. D. No, of course not. E. Coffee, please. F. You don’t look well. G. But he panned to. H. Take it easy. Student: I’m nervous. Teacher: ______. Betty, you’ll finish it quickly. 参考答案:H