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
I. detects J. plan K. continental L. list
M. predicts N. managing O. likely
II. A 12. F 13. B 14. D 15. L 16. E 17. O 18. K 19. G 20. M
英语四级过关专项训练英译汉
听美文故事记6级单词208
英语四级阅读的命题规律与答题技巧
高中英语短语大全:字母K开头
6月大学英语四六级考试作文预测
备考六月四六级考试作文加分句型
四级考试最新的作文预测
2014大学英语四级高频词汇(6)
大学四级词组
英语四六级考前最好要背的作文
英语6级词汇词根+联想List 22
听美文故事记6级单词0105
备战新英语四级最有新意的综合部分
英语四级考试中最易混淆的72组词汇
大学英语六级词汇拼读版012
英语四级考试必背作文话题词汇与短语
高中英语短语大全:字母L开头
2014大学英语四级高频词汇(2)
听美文故事记6级单词0107
六级的疑难词汇
提高初中英语作文的方法
学习英语的方法
brave的中文释义是什么
六级必考词汇500
口语发音与听力
听力小技巧
英语6级词汇词根+联想List 23
高中英语短语大全:字母N开头
大学英语六级词汇解析Lesson8
英语新六级高频词汇汇总一
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |