Hot weather in Shanghai 20 13

Analysis of test questions: ① Cold front, ② cyclone and ③ anticyclone are shown in the figure. From June to July, the rainy season is formed under the influence of quasi-static front, and rainfall will reduce the temperature in the same period. In summer and autumn, the strong development of cyclones in tropical and subtropical oceans is called typhoon, and the landing of typhoon increases precipitation, thus cooling down. Item b is correct. From July to August, under the influence of anticyclone, summer drought weather formed in the Yangtze River basin in China, with many sunny days and high temperature. This year is stronger than previous years, and longer than previous years will lead to higher temperatures.