(2084? Hongkou District model) The ancient Chinese people divided the year into 24 equal parts based on the position of the sun and the moon, the weather, the growth of animals and plants and other natural phenomena.

The latitude of the tangent point is between 66°ha′ and a0°. According to the relationship between the latitude of the tangent point and the latitude of the direct sun point (the two are mutually supplementary), it can be seen that when the latitude of the tangent point is 66°ha′ , the sun shines directly on the Tropic of Return, and the solar term is the summer solstice or winter solstice; when the latitude of the tangent point is a0°, the sun shines directly on the equator, and the solar term is the vernal or autumnal equinox. From this we can determine the solar term represented by number ③ in the figure: the latitude of the tangent point at ③ is 66°ha′, and the solar term should be the summer solstice or winter solstice.

When the solar term represented by number ③ is the summer solstice, the latitude a0° of the tangent point on the left is the vernal equinox, and the latitude a0° of the tangent point on the right is the autumnal equinox. Reading the picture is based on the relative relationship between other numbers and known solar terms. Determine the location: ① It’s the Great Cold, ② It’s the Beginning of Summer, and ④ It’s the Heavy Snow.

When the solar term represented by number ③ is the winter solstice, the latitude a0° of the tangent point on the left is the autumnal equinox, and the latitude a0° of the tangent point on the right is the vernal equinox. Reading the picture is based on the relative relationship between other numbers and known solar terms. Determine the position: ① is the Great Heat, ② is the Beginning of Winter, and ④ is the awn species.

So choose: D.