Read Figure 1 of the near-surface weather system in the Northern Hemisphere and answer the following questions. (1) According to the air pressure conditions, place A is the center of ______, and place B is the center of ______. In the picture

(1) According to the distribution and value of isobars, it is not difficult to judge that A is the high-pressure center and B is the low-pressure center. Place B is controlled by low pressure, and the central airflow rises, often forming rainy weather. Due to the effect of clouds, the atmosphere's weakening effect on solar radiation is strong during the day and the temperature will not be too high. At night, the atmospheric reverse radiation is strong and the temperature will not be too low. Therefore, The temperature difference between day and night in place B is small.

(2) According to the representation of the front line in the figure, it can be judged that location C is located in front of the cold front and will be affected by the cold front in the next few days. There will be strong winds, rain, snow and cooling weather.

(3) Combined with the isobars, we can draw and analyze the method of diagonally crossing the isobars according to the wind direction, from high pressure to low pressure, and the geostrophic deflection force in the northern hemisphere deflects to the right. The wind direction in E is northwest wind (biased North wind). Since the isobars at F are denser than those at E, the horizontal pressure gradient force is greater, so the wind force at F is stronger.

(4) According to the analysis of the figure, B is a cyclone in the northern hemisphere. The horizontal movement direction of its airflow is counterclockwise convergence from the surroundings to the center, and the central airflow is rising.

So the answer is:

(1) High pressure and low pressure (1 point) B

Reason: B is located in the center of low pressure, where rainy weather often occurs. During the day, the atmosphere has The weakening effect of solar radiation is strong, the temperature will not be too high, and the atmospheric reverse radiation is strong at night, the temperature will not be too low, so the temperature difference between day and night is small. (2) Strong winds, cooling, rain and snow cold front

(3) Northwest (north)? F isobars are denser, and the horizontal pressure gradient force is larger

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