Read the map and complete the following requirements. (1) Observe the sun bisector. When the earth turns to A, the solar terms in the southern hemisphere are _ _ _ _ _ _, and when the map turns, it is

Read the map and complete the following requirements. (1) Observe the sun bisector. When the earth turns to A, the solar terms in the southern hemisphere are _ _ _ _ _ _, and when the map turns, it is _ _ _ _. When the earth revolves around the sun, the direct point of the sun moves between the tropic of cancer.

(1) When the earth turns to A, the direct point of the sun is on the tropic of cancer, and the southern hemisphere is the summer solstice. When the direct point of the sun is on the tropic of cancer, the northern hemisphere is the summer solstice.

(2) When the earth revolves to point C, the sun shines directly on the Tropic of Cancer. At this time, the day is the longest and the night is the shortest in the northern hemisphere. At point A, the sun shines directly on the Tropic of Cancer, and the northern hemisphere is the winter solstice, with the shortest day, the longest night and the longest shadow at noon.

(3) When the direct point of the sun is at the equator, it is the vernal equinox (March 2 1, the position of point B in the figure) and the autumnal equinox (September 23, the position of point D in the figure).

(4) At l7 on September 27th, 2008, the direct point of the sun hovered between the equator and the tropic of Capricorn, that is, between DA in the figure.

Therefore, the answer is: (1) summer solstice; ? c？ (2)C； ? a(3)B； ? (4)④.