A.
旅游活动是具有经济性质的一种社会现象 Tourism activity is a social phenomenon with economic nature
B.
旅游活动可分为“能动旅游”和“被动旅游”两种形态 Tourism activities can be divided into two forms: "active tourism" and "passive tourism"
C.
旅游中心地是由自然吸引力和派生吸引力平衡的结果 The center of tourism is a result of the balance of natural attraction and derived attraction
D.
旅游活动是国际间的收入与花费的分配现象 Tourism activity is a phenomenon of international distribution of income and expenditure