(074? Zhabei District you model) The front refers to the intersection line between the front and the ground. The figure shows the distribution of fronts and rain areas in a certain area of ​​my country from May 77th to May 3rd of a certain year.

A. The 22nd is before the cold front passes through. Site A is controlled by the warm air flow, and the temperature is not the lowest, so it does not meet the meaning of the question;

B. The 22nd is when the cold front passes through. , the temperature dropped, and rainy weather appeared, but the temperature was not the lowest, so it did not meet the meaning of the question;

C. On the 23rd, after the cold front passed through, the temperature dropped, but it was not the lowest temperature of the day, so it did not It is in line with the meaning of the question;

D. Based on the movement of the front in the picture, judge A's situation after the front passed through on the 23rd. Generally, the ground loses the most heat around sunrise, so this is the time when the temperature is lowest. Therefore, during the period from the 22nd to the 3rd, the lowest temperature in area A occurred around sunrise on the 3rd, so it is correct.

So choose: D.