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 it is difficult nowadays to convince the public of the importance of nature reserves, Dr. Baum felt that ______.
A．people would support moves to create more environment areas
B．certain areas of countryside should be left undisturbed by man
C．existing national parks would need to be more independent to survive
D．people would carry on supporting those national parks in existence
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
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