2. 外语
  3. By saying "Spring is usually prime food time for 1,200 polar bears"(Line 1, Para. 1), the author means that ______. Many scient

By saying "Spring is usually prime food time for 1,200 polar bears"(Line 1, Para. 1), the author means that ______. Many scient

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问题 By saying "Spring is usually prime food time for 1,200 polar bears"(Line 1, Para. 1), the author means that ______.
Many scientists hold that global warming can be controlled by ______.
选项 A、reducing the polar bear population
B、paying more attention to the earth’s rising temperatures
C、reducing carbon dioxide emissions
D、refreezing the polar ice caps
答案C
解析 事实细节题。第四段开头指出：“大部分科学家都认为，阻止全球变暖唯一有效的策略就是大量减少排放像二氧化碳这样危害大的空气污染物。”
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大学英语四级

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