单项选择题

Which of the following about the ladle shaped compass is true

A．The "handle" of the ladle pointed south.
B．The "handle" of the ladle pointed north.
C．The bulk of the ladle was attracted to south.
D．The bulk of the ladle remained unmoved on the board.

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单项选择题

What is the first paragraph mainly about

A．Columbus was a great sailor and discoverer.
B．The compass was invented by Columbus.
C．The invention of the compass is important in human history.
D．Columbus introduced the compass to the West Indies.

单项选择题

What would the paragraph following this passage most probably discuss

A．Various uses of ladle-shaped compasses.
B．Improvement on the ladle-shaped compass.
C．Compasses introduced to the West from China.
D．The sea voyages of Europe's "Age of Discovery".