High school geography problems, related to frontal cyclones

Weather system focuses on weather change

Frontal cyclone = Frontal (cold front, warm front)+cyclone

Cold front, warm front and cyclone can all be accompanied by rainy weather, so frontal cyclone has superposition effect on rainy weather.

the anticyclone is high pressure, and the weather under control is clear, so it can't be superimposed on the front.

2.

The front is the meeting of cold and warm air masses, and the properties of cold and warm air masses are obviously different, and the air pressure on both sides of the front is quite different. At the center of low pressure, the isobar of the groove is obviously bent, and the air pressure changes greatly. The two are consistent, so the front can only appear in the position of the trough of low pressure.