Read the pictures and answer the following questions. Material 1: isoline map and a weather system map of a certain area in China. Material 2: Some climate data of two cities, A and B.

(1) According to the representation of the center plane in the figure, it can be judged that the area is mainly influenced by the quasi-static front, and according to the distribution of the front, it can be judged that the front is northwest-southeast strike.

(2) In autumn and winter, the eastern part of Yunnan-Guizhou Plateau is low-lying, affected by cold air from north to south, and the western part is controlled by the removal of warm and humid air masses at higher altitudes. The cold and warm air masses contact each other in the zone between Guiyang in B and Kunming in A, which is evenly matched and moves slowly, forming a quasi-static front (Kunming).

(3) When drawing a quasi-static front, we should pay attention to two aspects: the position of the front and the oblique direction of the front; Moving direction of cold and warm air mass and rain area.

(4) According to the analysis of the figure, under the control of a single heating mass, place A (Kunming) is blue, sunny and warm, and place B (Guiyang) is often covered by a stationary front, and the weather is rainy and humid.

(5) City A is Kunming, China. From the latitude and longitude position and the land and sea position, Kunming is influenced by the warm and humid airflow brought by the southwest monsoon from the Indian Ocean and the southeast monsoon from the Pacific Ocean in summer, and there is much precipitation in summer, and the clouds weaken the solar radiation. At the same time, Kunming is located in Yunnan-Guizhou Plateau, and its high altitude leads to a cool and rainy summer climate.

So the answer is:

(1) (Kunming) Northwest-Southeast strike of quasi-static front

(2) In autumn and winter (or half a year in winter), the cold air in the north meets the warm and humid airflow in the southwest to form a front, which is blocked by the terrain (Yunnan-Guizhou Plateau).

(3)

(4) Difference: The temperature in city B is lower than that in city A, and the precipitation is more than that in city A..

Reason: City B is located on the cold air side of the front, with low temperature and rainy weather; A city is located on the warm air side of the front, with high temperature and sunny weather.

(5)A city is cool (moderate) and rainy in summer.

Reasons: In summer, due to the warm and humid air flow brought by the southwest monsoon (from the Indian Ocean) and the southeast monsoon (from the Pacific Ocean), there is more precipitation; Located in Yunnan-Guizhou Plateau, the altitude is high and the temperature is low, and the clouds weaken the solar radiation.