The geographical concentration of tourism activities is mainly reflected in ( ).

Answer: A, C, E

The uneven spatial distribution of modern tourism activities is called geographical concentration. Specific manifestations include: ① Judging from the global distribution pattern of international tourism reception, it is mainly concentrated in the three major regions of Europe, Asia-Pacific and North America, with other regions accounting for a small proportion; ② Judging from the regional distribution pattern of my country's inbound tourism reception , mainly concentrated in those tourist hot spots and hot cities, while the reception volume in cold spot areas is very small; ③ Judging from the distribution of tourist activities in a tourist city, they are also concentrated in certain areas and certain areas of the city. Attractions are not evenly distributed throughout the city.