At present, due to the deterioration of air quality in northern China, the phenomenon of haze weather has increased and the harm has increased. The smog event is actually an abnormal weather situation

At present, due to the deterioration of air quality in northern China, the phenomenon of haze weather has increased and the harm has increased. The smog event is actually an abnormal weather situation. A

Analysis of test questions: A, the natural factors of haze weather are: the atmospheric pressure is low and the air does not flow, which makes the tiny particles in the air gather and float in the air. 2. The ground is dusty and the air humidity is low. People and traffic on the ground stir up the dust. A is correct;

B. Hazy weather is mainly man-made environmental pollution. As we all know, the air pollution caused by traditional gasoline vehicles is quite serious, and the air pollution caused by exhaust emissions forms haze weather, which now accounts for more than half of the total pollution sources, which is caused by human factors. B error;

C, winter heating in northern China is mainly coal-fired, and the main reason for air quality "exceeding the standard" (being polluted) is that coal-fired coal emits a lot of smoke (solids) and harmful gases (gases) into the atmosphere, which requires strict control and elimination of pollution sources. This is caused by human factors, C error;

D. Some areas blindly pursue the improvement of GDP, and bring in a large number of foreign enterprises with serious pollution, making China a "world factory", leaving a lot of pollutants for themselves, which is also the cause of smog, which is caused by human factors, D error.