单项选择题

A good title for the selection is（）

A．Archimedes
B．Archimedes' Principle
C．A gold and silver crown
D．The king of Syracuse

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单项选择题

The word immersed in the second paragraph means”（）”.

A．lifted
B．raised
C．rose
D．under water

单项选择题

From this selection we may conclude that the king's crown （）

A．moved less water than pure gold of the same size
B．moved more water than pure gold of the same weight
C．moved more water than pure gold of the same size
D．moved less water than pure gold of the same weight