掌跖角化病是一组以掌跖部_____________为特征的遗传性皮肤病。
参考答案：弥漫性或局限性角化过度
饭店市场营销活动是饭店营销部一个部门的事情，与其他部门无关。
Which of the following is the most appropriate title for the passage
A．A New Trend in Global Tourism Industry
B．Global Tourism Industry and Employment
C．Global Tourism Industry and Marketing Campaigns
D．Major Players in Global Tourism Industry
