For example, the table shows the weather forecast of Jieyang City on December 18-2, 213. Compared with the 2th, the highest temperature on the 19th was higher and the lowest temperature was lower, because on the 19th,

According to the weather phenomena on 19th and 2th in the table, it is sunny on 19th and cloudy on 2th. Compared with 2th, the highest temperature on 19th is higher, and the lowest temperature is lower, which is because the atmospheric weakening effect on 19th is weaker than that on 2th, and the atmospheric reverse radiation is weaker at night.

Therefore, it is selected as B. 。