第17题: [单项选择]What do we learn from the conversation A. The police wants to talk to the main actor. B. The main actor forgot to come. C. The main actor is delayed by traffic. D. The main actor is busy buying jam on his way. 参考答案:C 答案解析:[听力原文] W: The play should have begun ten minutes ago. What’s holding things up M: It is said
第33题: [单项选择]下列关于缺水的叙述错误的是()。 A. 高渗性缺水,细胞内缺水<细胞外缺水 B. 低渗性缺水,细胞间液缺水<血浆缺水 C. 中度等渗性缺水时,细胞内液变化不大 D. 高渗性缺水时,缺水>缺钠 E. 低渗性缺水时,细胞外液缺水>细胞内液缺水 参考答案:A 答案解析:高渗性缺水的特点:水、钠同失;缺.水多于缺钠;血清钠升高;细胞外液高渗;细胞内脱水。由于缺水多于缺钠,故细胞外液高渗,细胞内的水向细胞外转移,导致细胞内缺水,故高渗性缺水时,细胞内缺水>细胞外缺水,故