When we talk about the climate（气候）of the UK, you may think of f 1 London and rainy weather. Actually, after many years, London is not as foggy as it used to be because the government is trying their best to solve the p 2 of air pollution, which is the major(主要的) r 3 of the thick fog in London. However, it is t 4 that it often rains in the UK and the weather always changes quickly. Maybe you wish to play tennis with your friend after work when you see the beautiful sunshine in the morning, but suddenly the wind comes and it r 5 when you go to work. The difference in temperature b 6 winter and s 7 is not so great in the UK as in China. The average（平均的）t 8 for winter is about 4.5℃, and for summer about 15.5℃. And the best time to visit the country is in summer. It is often s 9 and you can enjoy outdoor sports and have a picnic h 10 in such weather.