The following figure is a schematic diagram of the change of solar height in Ordos (39 N) at noon on the day of vernal equinox, summer solstice and winter solstice. It is pointed out that the followin

The following figure is a schematic diagram of the change of solar height in Ordos (39 N) at noon on the day of vernal equinox, summer solstice and winter solstice. It is pointed out that the following solar terms conform to the diagram. A

Test analysis:

Ordos is located in the north temperate zone, with a latitude of 39 N. From summer to the sun, the sun shines directly on the Tropic of Cancer, which is closest to the direct point of the sun, and the solar altitude angle is the largest at noon. So is the solstice in summer. From winter to the sun, at the place farthest from the direct point, the height angle of the sun is the smallest at noon, so ③ is the winter solstice. At noon on the vernal equinox, the height of the sun is between summer solstice and winter solstice, so ② is the vernal equinox. A right.