A:did the meeting come
B:that the meeting came
C:when the meeting came
D:and the meeting came
随着人们生活质量的提高,越来越多的人喜欢旅游,但在旅游中总有一些不和谐的现象,如破坏文物,不遵守公德,为此公民在旅游时应注意( )