(20j0？ Shandong) If I is the vertical distribution of near-surface temperature observed five times on a day in the mid-latitude of the northern hemisphere, I. It was sunny that day and the sunrise tim

(20j0？ Shandong) If I is the vertical distribution of near-surface temperature observed five times on a day in the mid-latitude of the northern hemisphere, I. It was sunny that day and the sunrise time was. A, sunrise time+sunset time =l hours, sunset time is 19 hours, so it does not meet the meaning of the question;

B, the days are long and the nights are short in the northern hemisphere. The higher the latitude, the longer the days. Compared with Haikou, the days are longer, so it is correct;

C, the direct point of the sun is located between the equator and the tropic of cancer, and the shadow of the noon object is not the longest in a year, which does not meet the meaning of the question;

D, the place is located in the mid-latitude of the northern hemisphere, and the sun is due south at noon, which does not meet the meaning of the question.

Therefore, choose: B.