在西安的世园区内，处处飘溢着花香，这是____现象；气温高时，香味更浓，说明_______________．
扩散；温度越高分子无规则运动越剧烈
-__________ your mother often listen to music?
- Well, sometimes.[ ]
A. Does
B. Do
C. Is
D. Are
简述BPR与信息系统的关系。
