The smoggy weather in Nanjing

Question 1:A

Question 2:C

Test analysis:

Question 1: According to the stem "When smog weather appears, it is usually accompanied by low wind speed

Question 1:A

Question 2:C

Test analysis:

Question 1: According to the stem "When smog weather appears, it is usually accompanied by low wind speed, strong sunshine and low relative humidity". Therefore, from the point of view of high temperature, obvious air convection is beneficial to the diffusion of pollutants, while more precipitation is beneficial to the settlement of pollutants, which means that the haze weather is reduced.

Question 2: This question can be analyzed by exclusion method. The chart shows that the number of smog days in Nanjing decreased from 1 1 to 65438+2 in 2007, and A is wrong. Nanjing is located in the Yangtze River basin of China, and it does not belong to the coal-fired heating province in winter. B is wrong; The emission of automobile exhaust should be roughly the same in each month, so item D is wrong; In rainy weather, atmospheric visibility is reduced, and item C is correct.

Comments: This question is generally difficult. Students need to master the basic information of materials and comprehensively analyze the main reasons that affect the diffusion of pollutants in the air and the regional environmental characteristics of China.