第9题: [单项选择]How does the woman play tennis A. She plays it very well. B. She begins to play it. C. She doesn’t play it very well. 参考答案:B 答案解析:[听力原文]9-10 M: Do you know how to play tennis W: Not very well. But I’d love to learn. M: W
第10题: [单项选择]CD8˙Tc细胞活化的第一信号是 A. TCR识别自身MHC-Ⅰ-靶细胞表面的肽Ag B. 协同刺激因子在靶细胞表面的表达 C. CD8˙Tc表达IL-2受体 D. CD8˙Tc表达IFN-γ受体 E. 受IL-12和IFN-γ的作用 参考答案:A