In a year, the five-star red flag on Tiananmen Square was first raised in which position of the following earth revolution signal (

Test analysis:

The flag-raising time of the five-star red flag in Tiananmen Square should be synchronized with sunrise. The earliest time to raise the flag is the earliest time to leave, and the summer solstice is the longest day in the northern hemisphere, which is the earliest time to leave. In the revolution diagram, the north pole of the earth axis at point B is close to the sun, and there is an extreme solar phenomenon at the north pole, that is, point B is the summer solstice, so B is right. A, c and d are all wrong.