Ecological house: refers to the use of ecological principles and the principles of ecological balance and sustainable development. Design, organization of various material factors in the internal and external space, so that materials, energy in the building system in an orderly cycle transformation, thereby obtaining Efficient, low consumption, pollution-free, ecologically balanced built environment. According to the above definitions, which of the following is non-dry ecological houses? ['The intelligent system is uniformly installed in a residential area. Realizing the constant temperature control of solar energy and conventional heating.', 'During the decoration of a house, a water collecting pipe was used to direct rainwater to the central pool of the house for use.', 'Plants and flowers are planted on the roof of an office building in a business district of a city, and the thermal insulation function of noisy and powerful buildings.', 'A community sorts and stores garbage sections and clears them in time to improve the recycling of garbage.']