練習(xí)：
    1． Something destructive could happen to a star that gets too close to a black hole．Which of the following destructive statements is NOT mentioned in the passage?
    A The black hole could tear apart the star．
    B The black hole could trigger a nuclear explosion in the star．
    C The black hole could dwindle its size considerably．
    D The black hole could devour the star．
    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．”
    答案與題解：
    1． C 短文的第一和第二段提供了答案。第一段第一句說，特大質(zhì)量的黑洞能夠撕裂靠近它們的恒星；第二段的第二句說，由于它們之間力量的懸殊，恒星內(nèi)部會發(fā)生核爆炸。第五段提及黑洞吞噬恒星的問題。C的內(nèi)容文章中沒有找到，所以應(yīng)該選擇C。
    2． A 該段告訴我們，兩種研究的焦點(diǎn)在于是否會引起核爆炸。所以，A是正確選擇。
    3． D 第四段告訴我們，模擬實(shí)驗(yàn)發(fā)現(xiàn)，整個的條件會引起核爆炸，這將徹底毀滅恒星，但恒星的一些物質(zhì)會被強(qiáng)力的爆炸拋出黑洞。所以，A、B、C三個選擇的內(nèi)容都是正確的說法，而D不是。
    4． C 第五段中its matter starts swirling into the hole itself，這里的its matter指的是the star’smatter，即被爆炸拋出黑洞的恒星物質(zhì)。所以應(yīng)選C。
    5． B 根據(jù)全篇語境，disruption在這里的意思是第一段提到的tearing apart。