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

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热门试题

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

单项选择题

The men who first made use of meteoritic metal were ______.

A．small isolated tribes
B．those who did not revere meteorites
C．nineteenth century scientists
D．warriors