第19题: [单项选择]Which of the following is true according to the speaker( ). A. He is looking for a job in a law firm. B. His lawyer always works with him. C. He works in a law fn-m part-time. 参考答案:C 答案解析:
[听力原文] To supplement his scholarship, he has a part-time job in a law firm downtown.
第32题: [单项选择]下列有关免疫调节的表述,正确的是() A. 吞噬细胞只在非特异性免疫中发挥作用 B. 抗体的形成过程与高尔基体有关 C. 机体自身的组织和细胞不可能成为抗原 D. 浆细胞只能来源于B细胞 参考答案:B 答案解析:吞噬细胞既参与非特异性免疫又参与特异性免疫,故A错;抗体是分泌蛋白,其合成有关的细胞器有核糖体、内质网、高尔基体和线粒体,故B正确;机体中衰老、病变的细胞可以作为抗原,故C错;浆细胞来自B细胞和记忆细