第5题: [单项选择]可使白喉杆菌生长迅速,形成典型的涂片染色形态的培养方法是() A. 吕氏血清斜面 B. SS琼脂平板 C. 亚碲酸钾血琼脂平板 D. 庖肉培养基 E. 罗氏培养基 参考答案:A 答案解析:分离白喉棒状杆菌常用的鉴别选择培养基含0.03%~0.04%亚碲酸钾的血平板,能抑制杂菌,且白喉棒状杆菌能吸收亚碲酸钾使其还原为元素碲,菌落呈黑色。
第27题: [单项选择]One day I______ a magazine article about the retirement of a professional NBA player in my favorite basketball team. A. came about B. came after C. came at D. came across 参考答案:D 答案解析:[考点] 动词词组辨析 A) come about“发生,产生”;B)come after“追赶,追逐”;C)come at“攻击某人”;D) come across“被理解,偶然遇见或发现某事物,