Mei Li:
What size is an Olympic sized ice rink used for figure skating and ice hockey? Is it 25x50 metres, 27.5x50 metres, or 30x60 metres??
Shuai Zheng:
30x60 metres
Mei Li:
Deriving its name from an Icelandic word meaning erupt, what name is given to a natural hot spring that intermittently ejects a column of water and steam into the air??
Shuai Zheng:
geyser
Mei Li:
What mountain range separates the continents of Europe and Asia??
Shuai Zheng:
ural mountains