www.黄片视频在线播放,欧美精品日韩精品一级黄,成年男女免费视频网站,99久久久国产精品免费牛牛四川,99久久精品国产9999高清,乱人妻中文字幕视频4399,亚洲男人在线视频观看

жH ѹӢժ > жH >

[ѣ£硯ԣ]

l(f)r(sh)g:2020-03-27 (li)Դ: жH c(din)

At present, the average per- capita fresh water resources in Beijing are no more than 300 cubic meters, which is one eighth of the national average and one 30th of the world average. Per-capita water resources in Beijing are far below the internationally accepted alarm level of 1,000 cubic meters. Official statistics show that at the end of 2007, Beijing" s resident population was 16.3 million, 520,000 more than the previous year. During the two weeks of the summer Olympics 2.5 million more people will flock to Beijing, including 450,000 for-eign tourists, 25,000 athletes and coaches and 25,000 journalists from around the world, and about 2.05 million visitors from other parts of China.

P(gun)~Quenching Beijing Thirst ѣ£硯ԣ that s+beijing that s beijing

c(din)x

(qun) ѹӢժ www.91mayou.com