The picture shows the terminator diagram of a solar term, in which the terminator line is tangent to the polar circle at point P, when it is Saturday in London and Sunday in Beijing. Answer questions

The picture shows the terminator diagram of a solar term, in which the terminator line is tangent to the polar circle at point P, when it is Saturday in London and Sunday in Beijing. Answer questions 25-28. A around June 22nd, the height of the sun in Sydney dropped first and then rose, which didn't meet the question.

B, around June 22, Moscow is in summer, so it does not meet the meaning of the question;

C, around June 22nd, the polar range in the Arctic Circle first expanded and then narrowed, which did not meet the meaning of the question;

D at the beginning of July, the earth's revolution speed is the slowest. Around June 22, the speed of the earth's revolution was slow, so it was correct.

Therefore, choose: d.