2015年自考英语一日常练习题(48)

　　编辑推荐：2015年自考英语一日常练习题汇总

　　Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed off large numbers of animals,but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock. To his surprise,the older the massive volcanic eruptions were,the more damage they seemed to do.

　　The main idea of this paragraph is__________.

　　A.Association of Mass Extinctions with Volcanic Eruptions

　　B.Killing Power of Ancient Volcanic Eruptopms

　　C.A Mass Extinctions

　　D.Volcanic Eruptions That Caused No Mass Extinction

　　编辑推荐：

　　各省市自考次数|2015年1月自考成绩查询入口

　　2015年4月各省市自考报名时间及报名入口

　　自考历年真题汇总|自学考试频道|自学考试论坛