239.
(28502-!-item-!-188;#058&003082)
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
请问E有什么错？its不是指star吗？
谢
E是过去时的虚拟吧 感觉像是特指某个star
这句话里it做什么成份？
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