第18题: [单项选择]柏油样便可见于() A. 溃疡性结肠炎 B. 痔疮 C. 肠结核 D. 十二指肠溃疡 E. 阿米巴痢疾 参考答案:D 答案解析:柏油样便多由于上消化道及小肠出血并在肠内停留时间较长,红细胞破坏后血红蛋白在肠道内与硫化物结合形成硫化亚铁,故粪便呈黑色。更由于附有黏液而发亮,类似柏油,故又称柏油样便。本题其余选项均为下消化道出血。
第36题: [单项选择]Passage One Questions 26 to 28 are based on the passage you have just heard.[A] Recalling something from one’s memory. [C] Conscience. [B] Something about preparatory method in exam. [D] Man’s mind. 参考答案:A 答案解析:[听力原文]26-28 Did you ever have someone’s name on the tip of your tongue and yet you were unabl