The weather forecast for February 2065438+021233 shows that there will be 5 ~ 6 gale in North China due to the influence of cold air from south to east, and the temperature will drop by 6~8℃ and the a

The weather forecast for February 2065438+021233 shows that there will be 5 ~ 6 gale in North China due to the influence of cold air from south to east, and the temperature will drop by 6~8℃ and the air humidity will decrease.

Question 1:C

Question 2: D.

Question 3: A.

Test analysis:

Question 1: According to the weather conditions of materials, it should be judged that it is a cold front crossing the border. After the cold front crosses the border, the area will be controlled by the cold air mass, so the temperature will drop, the air pressure will rise and the weather will turn fine.

Question 2: The disastrous weather caused by cold front includes heavy rain in summer, cold wave in winter, freezing injury in spring and sandstorm in northern China.

Question 3: According to the materials, it directly reflects that the weather system has brought strong winds to cool down the weather, but the air humidity has dropped, that is, there is no rainy weather, so strong winds can reduce air pollution.

Comments: This question is generally difficult. Students only need to master the weather changes and typical weather examples before and after the cold front crossing, and they can analyze the impact on the social environment in this area with the help of the basic information of the materials.