单项选择题

In Dr. Baum's opinion, a true nature reserve should ______.

A．be far away from urban-crowdedness
B．prevent whatever tourists to visit
C．be regarded as a place where nature is protected
D．provide buildings for human activities
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单项选择题
Although we all depend on the resources of nature for our survival, ______.
A．industrial products are replacing all our natural resources
B．it is only on islands that nature survives
C．we have forgotten what our original countryside looked like
D．we have allowed large areas of countryside to be spoilt by industrial development
单项选择题
Dr. Baum, a representative of the Council, visited one particular British national park because ______.
A．he was presenting the park with a diploma for its achievements
B．he was concerned about how the park was being run
C．it was the only national park of its kind in Europe
D．it was the only park which had ever received a diploma from the Council
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