Why did people in the 19th century believe the existence of intelligent life on Mars? What were the Mars’ seasonal changes in c

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问题 Why did people in the 19th century believe the existence of intelligent life on Mars?
What were the Mars’ seasonal changes in color believed to be?

选项 A、The natural changes on the planet.
B、The seasonal cycles.
C、The movement of some life form.
D、The storm of dust in its atmosphere.

答案D

解析 本题的依据句是第二段的内容。只有D选项是正确的意思;C选项的内容被后半句所否定。而其他的选择项的内容属于无关信息。
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