单选题According to the passage, which of the following best describes the sequence of stages that the sun will probably pass through?AYellow dwarf, white dwarf, red giant, black giant.BRed giant, white dwarf, red dwarf, nova explosion.CYellow dwarf, red giant, white dwarf, black dwarf.DWhite dwarf, red giant, black dwarf, yellow dwarf.
单选题
According to the passage, which of the following best describes the sequence of stages that the sun will probably pass through?
A
Yellow dwarf, white dwarf, red giant, black giant.
B
Red giant, white dwarf, red dwarf, nova explosion.
C
Yellow dwarf, red giant, white dwarf, black dwarf.
D
White dwarf, red giant, black dwarf, yellow dwarf.
参考解析
解析：
是非题。文章首段指出太阳目前为yellow dwarf star，第二段描述在变化的第一阶段太阳会成为red giant star，接下来第三段又指出太阳缩小后会变成white dwarf star，而文章最后一句描述太阳能量用尽后会变为black dwarf。因此太阳的演变过程是yellow dwarf, red giant, white dwarf, black dwarf，故选C。
是非题。文章首段指出太阳目前为yellow dwarf star，第二段描述在变化的第一阶段太阳会成为red giant star，接下来第三段又指出太阳缩小后会变成white dwarf star，而文章最后一句描述太阳能量用尽后会变为black dwarf。因此太阳的演变过程是yellow dwarf, red giant, white dwarf, black dwarf，故选C。
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