如果旅游需求交叉弹性系数( ),则表示两种产品之间是一种互补关系。 A.大于零 发布时间:2019-04-02 05:50 │ 来源:www.tikuol.com 题型:单项选择题 问题: 如果旅游需求交叉弹性系数( ),则表示两种产品之间是一种互补关系。A.大于零 B.小于零 C.大于1 D.小于1
题型:单项选择题 A new study suggests that the more teenagers watch television,_______ develop depression(抑郁症) as young adults.A.the more likely they are toB.the more likely they areC.they are the more likely to D.the more likely are they 查看答案