单项选择题

What is the main topic of the passage

A．The role of Florida in the American Revolution
B．The discovery of Florida by Ponce de Le6n in 1513
C．The history of the cultivation of oranges in Florida
D．The popularity of Florida oranges in London in the 1770's

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热门试题

单项选择题

We can infer from the passage that scientists are ______.

A．writing reports
B．observing what happened to San Francisco
C．providing more information about the California Earthquake
D．learning more about earthquakes

单项选择题

The main cause of the great loss of property 'after the San Francisco earthquake in 1960 is______.

A．falling buildings
B．broken pipes
C．fires
D．floods