题型:选择题 Our country_____rapidly in recent years, but she is still a _____ country. [ ]A. develops; developing B. develops; developed C. has developed; developing D. has developed; developed 查看答案
题型:单项选择题 诊断慢性支气管炎的标准是咳嗽、咳痰伴喘息每年发作( )A.持续3个月、连续1年以上B.持续3个月、连续2年以上C.持续2个月、连续1年以上D.持续2个月、连续2年以上E.持续2个月、连续3年以上 查看答案