The message the author wishes to convey in the passage is that______.A．human civilization
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The message the author wishes to convey in the passage is that______.
A．human civilization remains glorious though it is affected by climatic changes
B．mankind is virtually helpless in the face of the dramatic changes of climate
C．man has to limit his activities to slow down the global warming process
D．human civilization mill continue to develop in spite of the changes of nature