The weather symbols in the picture below indicate the weather from cloudy to sunny.

Test and analysis: according to the weather conditions indicated by the weather symbols in the figure, it is judged that the weather indicated by option A turns from cloudy to sunny; Option b indicates that the weather changes from moderate rain to sunny; C option means that the weather turns from fog to sunny. So choose option a in this question.

Comments: Knowing weather symbols and satellite cloud pictures means learning geography knowledge useful to life. Color and weather of satellite cloud images: blue represents the ocean, green represents the land, and blue-green areas are all sunny; White is a rainy area, and the thicker the white layer, the greater the probability of rainfall; Wind direction refers to the direction of the wind, and wind force refers to the strength of the wind. In terms of wind scale, there is a wind of 1- 12. The wide end of the weather vane indicates the wind direction, and the tail of the arrow points in the direction of the wind. Air quality: understand the content of air quality; Understand the meaning of air quality; Understand the index, grade and status of air quality.