Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its core, it expands into a red giant, eventually ejecting its outer envelope of gases to become a white dwarf.
Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its core, it expands into a red giant, eventually ejecting
Like any star of similar mass, once the hydrogen in the Sun's core is exhausted, then it expands into a red giant and eventually ejects
As in the case of any star of similar mass, once the hydrogen in the Sun's core is exhausted, it will expand into a red giant, and eventually ejecting
As any star of similar mass would, once the hydrogen in the Sun's core is exhausted it will expand into a red giant and will eventually eject
As would be the case with any star of similar mass, once the Sun exhausts the hydrogen in its core, it will expand into a red giant and eventually eject
A, Like引导对比只能跟名词。A 排除
B, Comparing any star with the hydrogen -- wrong
C, comparing the case of a star with the hydrogen; the unparallel " ejecting' phrase after 'and'
D, would作为helping verb,后面却没有跟verb,错; star对比hydrogen;读者无法通过句意知道it 代sun 还是 hydrogen。
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