单选题What will probably be the first stage of change as the sun becomes a red giant?AIts core will cool off and use less fuel.BIts surface will become hotter and shrink.CIt will use up its thermonuclear energy.DIts center will grow smaller and hotter.
单选题
What will probably be the first stage of change as the sun becomes a red giant?
A
Its core will cool off and use less fuel.
B
Its surface will become hotter and shrink.
C
It will use up its thermonuclear energy.
D
Its center will grow smaller and hotter.
参考解析
解析：
细节题。题干中的the first stage of change为关键信息，从而定位到文章第二段，该段第二句指出“距今大约五十亿年后，太阳的核会缩小并且会变得更热”，由此可知选项D为正确答案。
细节题。题干中的the first stage of change为关键信息，从而定位到文章第二段，该段第二句指出“距今大约五十亿年后，太阳的核会缩小并且会变得更热”，由此可知选项D为正确答案。
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