The following picture shows the weather in Tianjin in a certain period of August 20 13. Answer the following questions according to the pictures. Question 1: What is the weather system that causes the

The following picture shows the weather in Tianjin in a certain period of August 20 13. Answer the following questions according to the pictures. Question 1: What is the weather system that causes the weather change in Tianjin?

Question 1:B

Question 2:C

Test analysis:

Question 1: As the weather in Tianjin turns from cloudy to sunny and the temperature rises, it can be judged as warm front weather. So choose B.

Question 2: Therefore, after the sub-weather system transits, the weather turns fine, the cloud amount decreases, the atmospheric reverse radiation weakens at night, and the heat preservation effect is weak. So choose C.