邮政营销员参加各种活动，无论是公务活动还是私人拜访，都应该养成严格遵时守约的好习惯。
参考答案：对
Peter says that the Whites are on holiday, but no one knows_____ .[ ]
A. where they have been
B. where are they
C. where are they from
D. where they have gone
一氧化碳中毒（）
A.呼吸缓慢
B.喉头水肿
C.肺水肿
D.呼吸困难
E.呼吸杏仁味
