2. 外语
  3. A、The history of wildfires in North America demonstrates that controlled blazes have a positive effect on the environment, on th

A、The history of wildfires in North America demonstrates that controlled blazes have a positive effect on the environment, on th

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问题
选项 A、The history of wildfires in North America demonstrates that controlled blazes have a positive effect on the environment, on the whole.
B、The capability of certain metal alloys to withstand great heat proves greater than that of another, confirming metallurgists’ suspicions.
C、The study of seismological data proves that existing safety standards in construction will likely prove insufficient in the future.
D、One cigarette brand is found to cause fewer cases of cancer than another brand, disproving the notion that the first brand’s contents are more carcinogenic.
E、Ideas concerning the causes of schizophrenia are complicated by the discovery of a rare new psychotic condition whose symptoms defy explanation.
答案D
解析
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