第8题: [单项选择]When a program starts, students should first ______. A. learn how to do research and write papers B. have some learning experience C. learn about the course concretely and clearly D. know how to participate in discussions 参考答案:A 答案解析:本题为细节辨认题。文章第三段第三句讲到“Basic courses on doing research and writing papers are taught at the beginning o
第15题: [单项选择]有关出现结核病变态反应,下列哪项是错误的 A. 常发生于原发结核感染的病人 B. 多发生于结核菌侵人人体后4~8周 C. 局部可出现渗出性炎症,但不出现干酪样坏死 D. 结核菌素试验呈阳性 E. 可出现皮肤结节性红斑 参考答案:C 答案解析: 结核菌并不分泌毒素,而是通过细胞免疫对人体组织造成破坏。临床上常将免疫反应、变态反应(Ⅳ型、迟发型)与过敏反应混为一谈,考试中应严格区分。类似试题如[1997N0150]、[1996N045]