2. 外语
  3. Farming emerged as a survival strategy because man had been obliged ______. Evidence of past climatic changes indicates that __

Farming emerged as a survival strategy because man had been obliged ______. Evidence of past climatic changes indicates that __

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问题 Farming emerged as a survival strategy because man had been obliged ______.
Evidence of past climatic changes indicates that ______.
选项 A、human activities have accelerated charges of the Earth’s environment
B、the Earth’s environment will remain mild despite human interference
C、the Earth’s climate is bound to change significantly in the future
D、the Earth’s climate is unlikely to undergo substantial changes in the future
答案C
解析 本题考查对第四段内容的理解。从语篇结构分析，该段为全文观点的总结，即全球变暖只不过是长期以来地球气候变化过程的一部分，而且从地球气候周期性变化这一模式可以推出，地球将来的气候将肯定经历巨大的变化 (最后一句)。由此分析C项正确。
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