第6题: [单项选择]COPD急性发作伴细菌感染时，最主要的临床表现是（）. A. 咳嗽加重 B. 咳白色泡沫痰与黏液痰 C. 咳脓性痰且痰量增加 D. 肺部有哮鸣音 E. 肺底部有细湿啰音 参考答案:C 答案解析:COPD的主要临床表现是（咳）嗽、咳（痰）伴（喘）息，咳白色泡沫痰或黏液痰，急（急）性发作伴有细菌感染时咳黄色脓性痰，且咳嗽加重，痰量增加。
A. when they found many African men had more than one wife B. because they had no freedom C. because they were made to do everything in the houses D. before they saw African marriage situations 参考答案:A 答案解析:细节题。根据文章第一、二句话“…they were amazed to find that many Africans had more than one wife…．many people thou
