单项选择题

Which of the following is not to blamed for the worsening of the environment on our planet

A．National parks.
B．Overpopulation.
C．Global warming.
D．Chemicals.
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单项选择题
At the beginning of the passage, Mountain Gorilla and Short Tailed Chinchilla seem to be some ______.
A．mountains
B．animals
C．rivers
D．sceneries
单项选择题
A UNEP official said, The future is another country. Here he implies that ______ .
A．We can never do anything for the future
B．We can never know for certain about the future
C．We can see how lack of actions might effect on the inhabitants
D．We can see how our actions might influence the environment
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