单项选择题

When did man begin to explore the Antarctic

A．About 100 years ago.
B．In this century.
C．At the beginning of the 19th century.
D．In 1798.
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单项选择题
What is planned for the continent
A．Building dams along the coasts.
B．Setting up several summer resorts along the coasts.
C．Mapping the coast and the whole territory.
D．Setting up permanent bases on the coasts.
单项选择题
What must the explorers be, even though they have modern equipment and technique
A．Brave and tough.
B．Stubborn and arrogant.
C．Well-liked and humorous.
D．Stout and smart.
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