Read the Schematic Diagram of the Earth's Revolutionary Movement and answer the following questions: (1) Write the names of solar terms represented by A, B, C and D (bisector): A, _ _ _ _ _ _ _ _.

(1)A is the vernal equinox on March 2 1, B is the summer solstice on June 22, C is the autumn equinox on September 23, and D is the winter solstice on February 22.

(2) The revolution direction of the earth is from west to east;

(3) When the earth turns to point B, that is, the summer solstice, the sun shines directly on the Tropic of Cancer. For most parts of the northern hemisphere, the height of the sun is the highest at noon, and the northern hemisphere is in summer.

So the answer is:

(1) vernal equinox; Summer solstice; Vernal equinox; Solstice of winter;

(2)

(3) Tropic of Cancer; Maximum value; summer