Mei Li:
The USA won the most medals at the Sydney Olympic Games in 2000. Out of these countries, which one won the most??
Shuai Zheng:
australia
Mei Li:
The chemical elements Erbium, Terbium, Ytterbium and Yttrum areall named after a village in which European country??
Shuai Zheng:
sweden
Mei Li:
In which state of the USA is the Badlands National Park??
Shuai Zheng:
south dakota