From the perspective of climate, why is the Rio Summer Olympics held from August 15 to 21, 2016

Rio is located in the tropical rain forest of the southern hemisphere. The climate is hot and rainy, which is unfavorable for athletes to play and hold the games
Rio August is the late winter season, with less rainfall and lower temperature than other seasons

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1. Beijing's geographical position in the world, Beijing's terrain and Beijing's climate characteristics; what are China's geographical position, terrain and climate characteristics in the world?
2. What are the climates of Beijing and Tokyo? What are the common characteristics of the two climates?
3. 1＋1－1－1＋1－1＋11－111－1111＋111＋1÷111÷1÷1111÷1－1111÷1－11×11－11×1－1111－111＋111＝?
4. 1 times 1, 11 times 11111 times 1111 times 1111, find the law
5. 1+1+11.111.1111
6. What is 1 + 11 + 111 + 1111
7. How about 1 + 11 + 111 + 1111
8. How about 1 + 11 + 111 + 1111 + n
9. Using the sum of general term, 1 + 11 + 111 + +111… The sum of 1n ones
10. Find the rules and fill in the numbers: 1250, 20625, 17125, 14, (), (), (), ()
11. Why is the 29th Summer Olympic Games held in Beijing in July and August (considering climate conditions) instead of September and October? Isn't it raining a lot in July and August
12. Climate characteristics of Beijing The climate and characteristics of Beijing?
13. Why are people so excited about China's successful bid for the Beijing Olympic Games?
14. 2008 ~ month ~ day ~ hour, the ~ th Summer Olympic Games opened in Beijing, the capital of China?
15. On August 8, 2008, the 29th Summer Olympic Games was held in Beijing. In the men's 100m Sprint race, the athletes walked fast. On the speed of the athletes' movement, the audience used the same time to compare the speed of the movement; the referee used the same time to compare the speed of the movement________ To compare the speed of motion; in physics____________ To compare the speed of the movement
16. The biggest waterfall in China is () the longest and oldest man-made canal in China is () The four ancient civilizations in the world are () China's first atomic bomb was successfully exploded at the Lop Nur test site in on The abbreviations of WTO UFO CCTV stand for () () () Which summer Olympic Games did China hold in 2008? The theme of this Olympic Games is "(), (), ()" and the slogan is "()". How many gold medals did China win in this Olympic Games?
17. The problem is that the Beijing Olympic Games in China has successfully held the 2008 Summer Olympic Games. Please write down the deep impression of the Beijing Olympic Games The less words, the better. But not a few words, to a few paragraphs. At least 40 or more
18. The 2008 Olympic Games will be held in Beijing. As a reporter, please do an interview exercise and write an outline of the interview. (design at least 2 questions)
19. 8.75 + 3 1 / 2 + 1 1 1 / 4 + 4.5 =? 17.6 - (3.59-2 2 / 5) =? 8 1 / 7-2.375-3 5 / 8 =?
20. Find the rule: 7,8,12,18,17,28,22,38, (), ()