Weather forecast of Putian City, Fujian Province

(1) The next day, it rained heavily in Putian during the day. Among the five options of weather symbols in material 2, symbol A means cloudy, symbol B means cloudy, symbol C means thunderstorm, symbol D means rainstorm and symbol E means frost, so the answer is D;

(2) The predicted temperature in the weather forecast is 2 1℃/9℃, that is, the highest temperature of the day is 2 1℃ and the lowest temperature is 9℃; The highest temperature minus the lowest temperature in a day is the daily temperature difference, 2 1℃-9℃= 12℃, and we get the daily temperature difference of that day as 12℃.

(3) The next day, it was raining heavily in Putian during the day. Xiaowen's mother told her to remember to bring an umbrella when she went out during the day, which I think is very suitable;

(4) In recent decades, the air quality has become worse and worse due to a large amount of waste gas discharged by human production and life. What we can do is to reduce waste gas as much as possible and plant trees, because trees can purify the air;

So the answer is: (1) d; (2)2 1℃; 9℃; 12℃; (3) belts; (4) take care of flowers and plants; Afforestation; Use clean energy; Ride more bicycles or take buses; Straw is not burned in rural areas.