The trickle-down effect refers to the fact that in the process of economic development, it does not give special treatment to the poor, disadvantaged groups or poor areas, but rather groups or areas with limited development benefit the poor or the areas through consumption, employment and other aspects, driving their development and development. rich. Based on the above definitions, Which of the following are trickle-down effects:. ['The state strengthens poverty alleviation in the west.', 'Government creates convenient conditions for fresh graduates to start a business.', 'Labor department holds free skills training courses for laid-off workers.', 'Rural holiday in the suburbs of the city on May Day heats up year by year.']