XDF蓝皮书上的P168-7 A star will compress itself into a white dwarf,a neutron star, or a black hole after it passes through a red giant stage,depending on mass. D)Mass determines whether a star,after passing throgh the red giant stage, will compress itself into a white dwarf, a neutron star,or a black hole. E)The mass of a star,after passing through the red giant stage,will determine whether it compresses itself into a white dwarf, a neturon star,or a black hole. 这道题目答案是D,我选择的是E,我不知道DE区别是什么?为什么不选E呢? |