Today I want to talk about the weather.Recently it may be not good.Just like a few days ago,there is always a large temperature difference between day and night.From Monday it has been raining for a while for cold air.What's more,it occured to the declining temperature and various weather.It is universial that climate is the problem we focus on al the time.with the development of industries,the amount of CO2 increasing leads to making the greenhouse effect more seriously.So that we don't underatand the strange weather.Please wear enough clothes in case of cold.