2. 外语
  3. According to the passage, the greatest part of the solar energy that reaches the Earth is ______. According to the passage, whi

According to the passage, the greatest part of the solar energy that reaches the Earth is ______. According to the passage, whi

admin2009-06-24  2
问题 According to the passage, the greatest part of the solar energy that reaches the Earth is ______.
According to the passage, which of the following is true of the last hundred years?
选项 A、Fossil fuels were burned for the first time.
B、The average temperature at the Earth’s surface has become 2℃ cooler.
C、The amount of carbon dioxide in the atmosphere has increased measurably.
D、The amount of farmland worldwide has doubled.
答案C
解析
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