Were it not for the fusion-powered heat and radiation that rush from its core, instead its own weight would cause a star to collapse.
A instead its own weight would cause a star to collapse
B instead a star would have collapsed under its own weight
C a star would have to be collapsing under its own weight
D a star would collapse under its own weight
E its own weight would have caused a star's collapse
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发表于 2013-9-28 09:19:45
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