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I haven't done geography for a long time ~ I'm a little rusty and my answer is not rigorous. Please forgive me ~

This problem is a basic one. The key to solving the problem is that you must make it clear that Beijing and Sydney are in the northern hemisphere and the other in the southern hemisphere. Therefore, Xia Dong and Sydney in Beijing are upside down. August in Beijing is summer, and September in Sydney actually ends almost in winter.

1) The monthly average temperature in Beijing varies greatly throughout the year. Beijing has a temperate monsoon climate, and the annual average temperature varies greatly. The lowest temperature is below 0 degrees. The monthly average temperature in Sydney has little change, with the lowest temperature above 0 degrees and the highest temperature below 30 degrees, and the climate is mild. According to past experience, in addition to the range of temperature change, the difference between the lowest temperature and the highest temperature is also the score point. ]

2) The second question may be that people don't know much about Sydney's climate in September. September to 10 is the early spring season in Sydney. The maritime climate is comfortable and mild, with little temperature change and less strong convective weather. This is the best time of the year, and the choice of time effectively reduces the influence of the weather on the game.

Beijing is more obvious. It can be answered from the law of summer monsoon movement. In August, the front rain belt moved to North China. At this time, there is more precipitation in Beijing and the weather is cooler than that in June and July.

P. You can also point out the climate types of Beijing and Sydney. Sydney has a humid subtropical monsoon climate. Unlike China's subtropical monsoon climate, Sydney is close to the sea, so it is more maritime, with small temperature difference and more precipitation.