按照()来划分,市场调查分为全面普查和重点调查。
A.凋查的侧重点
B.选择调查对象的方式
C.抽样方法
D.调查所采用的模型
参考答案:B
--- Did you go for the Shanghai Expo?
---- I _____ to, but I decided to stay with my sick mother at the last minute.
A.would intend
B.have intended
C.had intended
D.intended
百日咳的并发症为()
A.喉炎
B.支气管肺炎
C.脑病
D.肺气肿
E.肺心病