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Black Holes Trigger Stars to Self-Destruct Scientists say this Uneven pulling is not the only hazard facing the star.The strain of these unbalanced forces can also trigger a nuclear explosion powerful enough to destroy the star from within.Matthieu Brassart and Jean-Pierre Luminet of the Observatoire de Paris in Meudon，France1,carried out computer simulations of the final moments of such an unfortunate stars life，as it veered towards a supermassive black hole. The new simulations investigated the effects of shock waves in detail，and found that even when their effects are included，the conditions favor a nuclear explosion.There will be an explosion of the starit will be completely destroyed, Brassart says. Although the explosion obliterates the star，it saves some of the stars matter from being devoured by the black hole.The explosion is powerful enough to hurl much of the stars matter out of the black holes reach，he says. If stars disrupted near black holes really do explode，then they could in principle allow these events to be detected at a much earlier stage，says Jules Hatpern of Columbia University in New York，US2.It may make it possible to see the disruption of that star immediately if it gets hot enough, he says. 注释： Columbia University in New York，US：美国纽约哥伦比亚大学，长青藤联盟校之一。创建于1756年，当时名为国王学院。美国独立后，为了纪念发现美洲新大陆的哥伦比亚就改为哥伦比亚学院，直到1921年成为一所综合大学。1897年，该校迁址曼哈顿上城区校区。 练习： A The black hole could tear apart the star. C The black hole could dwindle its size considerably. According to the third paragraph，researchers differed from each other in the problem of B whether the stars would increase its density and temperature. D whether the uneven forces would flatten the stars. A No nuclear explosion would be triggered inside the star. C Much of the stars matter thrown by the explosion would be beyond the black holes reach. What will happen several months after the explosion of the star? B The black holes matter will heat up. D The black holes matter will release ultraviolet light and X-rays. A Confusion. C Interruption. 答案与题解： C 短文的第一和第二段提供了答案。第一段第一句说，特大质量的黑洞能够撕裂靠近它们的恒星；第二段的第二句说，由于它们之间力量的悬殊，恒星内部会发生核爆炸。第五段提及黑洞吞噬恒星的问题。C的内容文章中没有找到，所以应该选择C。 D 第四段告诉我们，模拟实验发现，整个的条件会引起核爆炸，这将彻底毁灭恒星，但恒星的一些物质会被强力的爆炸抛出黑洞。所以，A、B、C三个选择的内容都是正确的说法，而D不是。 B 根据全篇语境，disruption在这里的意思是第一段提到的tearing apart。 | 
