Oceans
Where is the largest ocean in the world?
The Pacific Ocean
Which four hazards are the most serious in natural disasters?
Earthquake, drought, flood, typhoon
What is the percentage of land area on the earth？
29%
Who is the patron saint of Athens?
Athena
Where is australia？
Oceania in the Southern Hemisphere
Which country has the most islands in the world?
Indonesia
Who invented the world's first seismograph?
Zu Chongzhi
Where is the largest desert in the world?
Sahara Desert
Where is the birthplace of the Renaissance in Italy?
Florence
What is the climate like in Australia?
The main climate type is tropical desert climate
What causes the low tide and high tide of the sea?
Lunar gravity
What are the two types of earthquakes?
Natural earthquake and artificial earthquake
What is the name of the southernmost city in the world?
Ushuaia
Which country was a North American colony and later became the United States？
Britain
When did Australia and China establish diplomatic relations?
December 21, 1972
What is the main method of extracting salt from seawater?
Evaporate crystallization
What are the relevant geological hazards?
Earthquake and volcano
Among the four oceans, where is the longest one?
Arctic Ocean
Where is the center of the enlightenment movement in the 17th and 18th centuries?
France
What is Australia's national flower? When was selected?
golden wattle, 1912
What is the main reason why mangroves are called "Guardians of the Sea"?
Pillar root
What are the main reasons for the difference in landscape between tropical rainforest belt and tundra belt?
Calories
Which continent both in the Northern Hemisphere from the Western Hemisphere?
North America
What was the fuse of the First World War?
Archduke Ferdinand assassinated
Where is the world's largest gold mine in Australia?
Boddington Gold Mine，Kalgoorlie