单项选择题

Until the end of the nineteenth century meteoritic iron was used to ______.

A．provide special weapons for royalty
B．build churches and temples
C．manufacture sturdy tools
D．all of the above
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单项选择题
In the nineteenth century men began to ______.
A．investigate practical uses for meteoritic iron
B．study meteorites scientifically
C．take more than a casual interest in meteorites
D．preserve meteorites
单项选择题
The more civilized early men tended to ______.
A．make practical use of meteorites
B．preserve meteorites carefully
C．have no interest in meteorites
D．recognize what meteorites actually were
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