How to identify the cloud system? (1) In modern life, satellite cloud has entered thousands of households through CCTV and TV weather forecast.

1. The satellite cloud image is a black-and-white photo taken by the photosensitive instrument on the meteorological satellite. (That's right)

2. There are two reasons: counterclockwise rotation; It runs very fast. (That's right)

3. The word "main" expresses a variety of "cloud pictures received by China" in the sentence, far more than the three mentioned, which reflects the accuracy of the explanation language. To answer the two meanings of "many kinds" and "accurate interpretation of written language"; )

4. Meteorologists judge the weather conditions according to the different colors and depths of meteorological cloud pictures; This agricultural proverb judges agricultural production activities according to the law of migratory birds' migration activities. (That's right)