Answer: (1) When the earth revolves to point A, the sun shines directly on _ _ _ _, which is _ _ _ _ _ (solar terms) in the northern hemisphere. (2) When the Earth

(1) As can be seen from the schematic diagram of the earth's revolution, when the earth revolves to position A, the sun shines directly on the Tropic of Cancer, which is the summer solstice in the northern hemisphere, and the date is around June 22nd.

(2) It can be seen from the schematic diagram of the earth's revolution that when the earth is in position C, the latitude of direct sunlight is the tropic of Capricorn; When the earth is in position D, the sun shines directly on the equator; When the earth is at position C to point D, the direct sunlight point moves from the tropic of Capricorn to the equator (moving northward), and the days in Beijing are getting longer and longer.

(3) New Year's Day is 65438+ 10/,which lies between the winter solstice (about 65438+February 22nd) and the vernal equinox (about March 2nd 1 day); It can be seen from the schematic diagram of the earth's revolution that when the earth is in position C, the latitude of direct sunlight is the tropic of Capricorn, which is the winter solstice in the northern hemisphere, and when the earth is in position D, the sunlight is direct at the equator, which is the vernal equinox in the northern hemisphere.

(4) As can be seen from the schematic diagram of the revolution of the earth, when the earth is in the position of B in the figure, the latitude of direct sunlight is the equator, which is the autumn equinox in the northern hemisphere, and the date is around September 23rd. At this time, the length of day and night in the world is equal.

So the answer is: (1) Tropic of Cancer; Summer solstice; (2) The daytime becomes longer; (3)C； (4)D。