Someone may think that technology is such a bad thing that some cultures or tradition v...
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Technology
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Whether class discussion is good
Nowadays, the discussion in the class gradually decreases, replaced by teachers' lect...
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The extinction of Anasazi
The reading claims that nearly 1550, the Anasazi abruptly extinct only centuries late...
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The Extinction of Dodo
The reading claims that dodo disappeared because of the human action. The lecturer, m...
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Whether Yellow National Park can be rebuilt
The reading passage describes that in 1988, an enormous fire in Yellow National Park ...