人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

 找回密码
 立即注册

QQ登录

只需一步,快速开始

微信登录

微信扫码,快速开始

[六级大学英语阅读] 六级冲刺练习阅读(130)

[复制链接]

  Southern Californians would love to find some way of knowing a month in advance whether a 11 earthquake will likely strike. One meteorologist suggests atmospheric pressure patterns might provide some 12 . Jerome Namias of the Scripps Institution of Oceanography in La Jolla, Calif. , proposed this 13 in 1988 when he reported that an unusually strong high-pressure system developed in the North Pacific before quakes struck southern California in 1986 and 1987. Now Namias has 14 expanded his analysis by studying the summers between 1947 and 1987.

  From a 15 of all southern California earthquakes with magnitudes of 4- 5 or greater during that period, Namias 16 out the summers with many quakes and those with no quakes. His analysis of the meteorology during these summers shows that quakes were more 17 under a particular set of conditions; a stronger-than-normal North Pacific high pressure, a low-pressure ridge over the 18 interior. Summers with no quakes usually had a weak Pacific high and a poorly developed continental high, he reports in the Dec. 10 JOURNAL OF GEOPHYSICAL RESEARCH. Namias cannot 19 the apparent correlation between pressure and seismicity, but he 20 that variations in seafloor pressure or in sea-surface temperature might influence both the atmospheric pressure and the ground stress in California.

  A. damaging B. idea C. trace D. greatly

  E. picked F. clue G. explain H. forcefully

回复

使用道具 举报

小黑屋/人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

Powered by 5wangxiao

© 2007-2021 5wangxiao.Com Inc.

快速回复 返回顶部 返回列表