2. 外语
  3. ______burning coal, oil and gasoline are responsible for the globing warming? ______people are encouraged to conserve electrici

______burning coal, oil and gasoline are responsible for the globing warming? ______people are encouraged to conserve electrici

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问题 ______burning coal, oil and gasoline are responsible for the globing warming?
______people are encouraged to conserve electricity?
选项 A、 
B、 
C、 
D、 
答案B,C
解析 鼓励人们存储电能，electricity是关键词。B谈到校园节能，包括电。C谈到高温气候下，加州遭遇能源危机，因此号召人们减少不必要的电消耗。
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