How much do you know about Antarctica（南极洲）？Antarctica is the coldest，windiest （1）

and

and

emptiest place in the world.There is little rain all year round and it is one of the world's （2）

driest

driest

（dry） places.It is also home to penguins and （3）

different

different

（difference） sea life along its coast.Cold weather over millions of years has made it very icy.In some places，the ice is about 1.9 km thick.
Humans （4）

have explored

have explored

（explore） Antarctica for many years.It is said that the first man to reach Antarctica was John Davis， （5）

a

a

US seal hunter.After that，thousands of tourists visit the coast of Antarctica during the summer （6）

which

which

is from November to February.They get there （7）

to see

to see

（see） penguins，seals，whales and icy view.
    Do you know who lives and works in Antarctica？They are（8）

mostly

mostly

（most） scientists and their assistants.The Polar Programmes in the US support the study of Antarctica.It sends more than 100 scientists to Antarctica each year.In Antarctica，some scientists study the（9）

movement

movement

（move） of glaciers（冰川） and the activity of volcanoes（火山）.Other scientists study animals， （10）

like

like

whales seals，birds and fish.