2. 外语
  3. The passage supplies information for answering which of the following questions?

The passage supplies information for answering which of the following questions?

admin2012-10-23  46
问题 The passage supplies information for answering which of the following questions?
选项 A、Why are projections of the effects of changes in water vapor levels on the climate so inaccurate?
B、What are the steps in the process that takes place as CO2 absorbs long-wavelength radiation?
C、How might our understanding of the greenhouse effect be improved if the burning of fossil fuels were decreased?
D、What might cause a series of regular increases and decreases in the amount of CO2 in the atmosphere?
答案D
解析 litter乱扔杂物于。句意：我真不明白人们为什么在这样漂亮的花园乱扔瓶瓶罐罐。locate确定……的地点；provide提供；protect保护。
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