题目9多选题
The reason for the government's intervention in infrastructure investment is ( )A. Infrastructure, as "advance capital", has a restrictive effect on the development of the entire national economyB. There are external benefits in infrastructure consumptionC. The regional nature of infrastructure makes it highly prone to monopolies, and the government needs to regulate its investment or operationD. The characteristics of large investment, long cycle, slow recovery and high risk make private individuals reluctant to invest in infrastructure