第8题: [单项选择]婴幼儿无尿的标准是昼夜尿量少于() A. 50ml B. 100ml C. 200ml D. 300ml E. 400ml 参考答案:A 答案解析:若新生儿尿量每小时<1.0ml/kg为少尿,每小时<0.5ml/kg为无尿。学龄儿童每日排尿量少于400ml/m2,学龄前儿童少于300ml/m2,婴幼儿少
第17题: [单项选择]Passage Three Questions 32 to 35 are based on the passage you have just heard. A. The history of Benjamin Franklin. B. The history of the U.S. mail. C. The Changes of writing letters. D. The history of U. S. 参考答案:B 答案解析:[听力原文] 32-35 The first postal service in North America began in New England (33)in the 17th