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It would be wonderful to observe a singularity (an infinitely dense concentration of matter) and obtain direct evidence of the undoubtedly bizarre phenomena that occur near one. Unfortunately, in most cases a distant observer cannot see the singularity; outgoing light rays are dragged back by gravity so forcefully that even if they could start out within a few kilometers of the singularity, they would end up in the singularity itself.
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当前版本由 发仔 更新于2018-05-09 09:58:29 感谢由 发仔 对此题目的解答所做出的贡献。
文章最后一句的中心意思：“Unfortunately, in most cases a distant observercannot see the singularity”
A. measurable，新信息，原文没有提到 immeasurable 或者相关概念；
B. 与原文意思最接近；
C. allow… 与原文意思相反
D. 新信息，原文作者其实完全可以这样写，但是做题角度讲，这么说是没有逻辑的；
E. 新信息，structure
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