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PP77求助求助
Q28: PP77.
Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its store, it expands into a red giant, eventually ejecting its outer envelope of gases to become a white dwarf.
A. Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its store, it expands into a red giant, eventually ejecting
B. 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
C. 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
D. 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
E. 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
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排除了BCD后，AE中犹豫不决，A中eventually ejecting不好，E中would感觉怪怪的~这个题应该怎么想啊，木有头绪，撞冰箱中。。。 |
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