Xiaoming's family wants to buy a house in Ganzhou. In order to travel conveniently, he is going to buy the first floor, but his father is worried about the poor lighting in the room. Xiaoming suggested going to see the house during the New Year holiday. if
When the earth revolves around the sun, the axis of the earth and the orbital plane form a fixed inclination of 66.5, which makes the direct point of the sun's rays move regularly between the tropic of cancer in a year.
On New Year's Day holiday, the direct point of the sun is closer to D in the process of moving from D to A. At this time, the height angle of the sun is smaller and the shadow of the building is the longest. Combination options.
So choose: C.