单选题When the sun becomes a red giant, what will conditions be like on Earth?A Its atmosphere will freeze and become solidB It will be enveloped in the expanding surface of the sun.C It will become too hot for life to exist.D It will be nearly destroyed by
题目
单选题
When the sun becomes a red giant, what will conditions be like on Earth?
A
Its atmosphere will freeze and become solid
B
It will be enveloped in the expanding surface of the sun.
C
It will become too hot for life to exist.
D
It will be nearly destroyed by nova explosions.
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参考答案和解析
正确答案：
A
解析：
细节题。第二段描述最初太阳会发生的变化，该段倒数第二句指出在这一阶段太阳会变成红色的巨星，接下来最后一句提到“Temperatures on the Earth will become too hot for life to exist.”（地球上的温度会变得过热，以至于生命无法存活），故选C。
细节题。第二段描述最初太阳会发生的变化，该段倒数第二句指出在这一阶段太阳会变成红色的巨星，接下来最后一句提到“Temperatures on the Earth will become too hot for life to exist.”（地球上的温度会变得过热，以至于生命无法存活），故选C。