2. According to the third paragraph，researchers differed from each other in the problem of
A whether nuclear reaction would occur.
B whether the stars would increase its density and temperature.
C whether shock waves would occur.
D whether the uneven forces would flatten the stars.
3. According to the fourth paragraph，which of the following is NOT true？
A No nuclear explosion would be triggered inside the star.
B The star would be destroyed completely.
C Much of the star‘s matter thrown by the explosion would be beyond the black hole’s reach.
D The black hole would completely devour the star.
4. What will happen several months after the explosion of the star？
A The star‘s matter will move further away from by the black hole.
B The black hole‘s matter will heat up.
C The torn star‘s matter will swirl into the black hole.
D The black hole‘s matter will release ultraviolet light and X-rays.
5. According to the context，the word “disruption” in Paragraph 6 means
A “Confusion.”
B “Tearing apart.”
C “Interruption.”
D “Flattening.”
答案与题解：
1. 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.
2. A 该段告诉我们，两种研究的焦点在于是否会引起核爆炸。所以，A是正确选择。
3. 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。
4. C 第五段中its matter starts swirling into the hole itself，这里的its matter指的是the star‘smatter，即被爆炸抛出黑洞的恒星物质。所以应选C.
5. B 根据全篇语境，disruption在这里的意思是第一段提到的tearing apart.