第36题: [单项选择]Brown rats are dangerous because ______. A. they carry fleas which give men bubonic plague B. they come with typhus C. they carry thirty-five diseases D. they killed 200 million people 参考答案:C 答案解析:[分析] 见文章的第二段中“...but brown rats carry thirty-five other diseases— typhus for example.”,选项B的“typhus”是