The relation of the earth on its axis is responsible for the_____of periods of l

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问题 The relation of the earth on its axis is responsible for the_____of periods of light and darkness.

选项 A、alteration
B、alternation
C、alternative
D、altercation

答案 B

解析各项的意思是：alteration“变更，改造，变动”；alternation“交替运转，轮流，间隔”；alternative“二中择一，可供选择的事物”；altercation“争吵，口角”。

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