A. Mr. Powell. B. Yasser Ararat. C. Ariel Sharon. D. Former US Senator George Mitchell and his fact-finding team 参考答案:D 答案解析:[听力原文] 23-24 After a stop in Jordan, US Secretary of State Colin Powell has ended a whirlwin
第31题: [单项选择]下列除哪项外,均常出现于增生性贫血的血象中() A. Howell-Jolly小体 B. Cabot环 C. 镰刀形红细胞 D. 嗜多色性红细胞 E. 有核红细胞 参考答案:C 答案解析:镰形红细胞:细胞呈镰刀状、线条状、或L、S、V形等,是含有异常血红蛋白S(HbS)的红细胞,在缺氧情况下,溶解度减低,形成长形或尖形结晶体,使细胞膜发生变形。检查镰形红细胞时需加还原剂如偏亚硫酸钠后观