As shown in the weather system, among the following options, () can roughly represent the changes of air pressure (solid line) and air temperature (dotted line) before and after the weather system tra

As shown in the weather system, among the following options, () can roughly represent the changes of air pressure (solid line) and air temperature (dotted line) before and after the weather system transits. A, cold front before crossing the border, high temperature, low air pressure, after crossing the border, the temperature drops and the air pressure rises, so it is correct;

B, according to the analysis in the picture, the temperature in the picture is rising, and the air pressure is falling, which is inconsistent with the weather changes before and after the cold front, and does not meet the meaning of the question;

C. From the analysis of the figure, the temperature in the figure first drops and then rises, and the air pressure first rises and then falls, which is inconsistent with the weather changes before and after the cold front passes, and does not conform to the meaning of the question;

D. From the analysis of the figure, the air temperature rises first and then falls, and the air pressure falls first and then rises, which is inconsistent with the weather changes before and after the cold front passes.

So choose: a