由于高难度市场的客户更加挑剔，所以高难度市场收集到的反馈信息，比简单市场和标准市场的信息更 * * 贵。
参考答案：对
_______mothers can't go to the meeting ,because they have gone to New York on business.[ ]
A. Alice and Lily's
B. Alice's and Lily's
C. Alice's and Lily
D. Alice and Lily
转化系统原始开车的主要步骤有哪些？
