单项选择题

Why was hemp banned

A．It is related to the marijuana plant.
B．It can be used to produce marijuana.
C．It was no longer a useful crop.
D．It was destructive to the land.
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单项选择题
According to its proponents, four times as much paper can be produced from land Using hemp rather than trees. What does proponents mean
A．People who are against something.
B．People who support something.
C．People in charge of something.
D．People who do research on something.
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