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 following sentences tell what happened many years ago. Which is the right order of the events（） A．Archimedes took a bath B．Archimedes discovered his principle C．The king of Syracuse asked him to sovle a problem D．Archimedes did the experiment on his crown

A. c; a; b; d
B. h; c; a; d
C. b; c; d; a
D. c; a; d; b

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