The position of the earth's revolution at noon when the sunshine area reaches the longest in a year.

(1) The direction of the earth's revolution is from west to east. (2) When the area of sunlight entering the room reaches the maximum in a year, it means that the solar altitude angle is the minimum. At this time, when the earth revolves to point C in the figure, the sun shines directly on the tropic of Capricorn, which is the winter solstice in the northern hemisphere. (3) When the earth revolves to a certain position, the sun shines directly on the Tropic of Capricorn, and the solar terms in the northern hemisphere are from summer to sun. When the earth revolves to position C, the sun shines directly on the Tropic of Capricorn, which is the winter solstice in the northern hemisphere. At this time, the extreme night phenomenon appeared in the Arctic Circle. (3) When the earth revolves to position C, the day is the shortest and the night is the longest in the northern hemisphere. When the earth revolves to position A, the day and night in the northern hemisphere are the shortest. Therefore, when the earth rotates from position C to position A, the day and night in the northern hemisphere become longer and shorter. (4) When the earth revolves to position A, the day and night in the northern hemisphere are the shortest. This is the solstice of summer in the northern hemisphere, and the time is around June 22. When the earth revolves to position B, it is the vernal equinox in the northern hemisphere, and the time is March 2 1. Therefore, during May Day, the earth should run between Pakistan. So option a fits the question. So the answer is: (1) (2) c; (3) Summer solstice; Tropic of Cancer; The longest day and the shortest night; Extreme night; (4) The daytime becomes longer; (5) answer.