2. 职称英语
  3. The first paragraph of the text deals mainly with the earth atmosphere’s ______.

The first paragraph of the text deals mainly with the earth atmosphere’s ______.

游客2023-08-01  64
问题 The first paragraph of the text deals mainly with the earth atmosphere’s ______. [br] According to the text, the fundamental cause of the ice ages is ______.
选项 A、periodic changes in the earth’s orbit around the sun
B、fossil remains of one-celled animals
C、alternating cold and warm seasons
D、changes in distance of the earth from the sun
答案 A
解析 事实细节题。第三段结尾指出：“地球轨道结构的变化导致了冰川期。”
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