This picture is a schematic diagram of the earth's orbit. In the picture, the orbit is divided into four equal parts by four points: A, B, C and D, and the time it takes for the earth to move in the o

This picture is a schematic diagram of the earth's orbit. In the picture, the orbit is divided into four equal parts by four points: A, B, C and D, and the time it takes for the earth to move in the orbit of revolution. B

Analysis of test questions: As can be seen from the figure, point P is near perihelion, with the time of 65438+1early October, and the revolution of the earth is the fastest. According to the revolution direction of the earth, it is inferred that the corresponding date of point B is 2 1 March, the solar term is vernal equinox, the corresponding date of point C is June 22nd, the solar term is summer solstice, the corresponding date of the lightest point is September 23rd, the solar term is autumnal equinox, and the corresponding date of point A is 6544. So choose B.

Comments: This problem is difficult, and the key to solve it lies in the judgment of perihelion and the four solar terms A, B, C and D.