课程咨询

GMAT首页 GMAT课程 GMAT动态 0元讲座 GMAT模考网站

新东方在线 > GMAT > GMAT阅读 > 正文
美研留学资料领取

扫码添加助教

免费领取

备考资料大礼包

扫码关注公众号

GMAT阅读题型练习（740）

2018-03-21 09:24:00来源：网络

　　本文来自GMAT阅读题库(点击查看更多)，为考生提供GMAT阅读题目练习及答案解析，希望对大家GMAT备考有所帮助。点击下载更多GMAT备考必备资料。更多精彩尽请关注新东方在线GMAT频道!

　　GMAT阅读题目内容

　　In 1971 researchers hoping to predict earthquakes in the short term by identifying precursory phenomena (those that occur a few days before large quakes but not otherwise) turned their attention to changes in seismic waves that had been detected prior to earthquakes. An explanation for such changes was offered by “dilatancy theory,” based on a well-known phenomenon observed in rocks in the laboratory: as stress builds, microfractures in rock close, decreasing the rock’s volume. But as stress continues to increase, the rock begins to crack and expand in volume, allowing groundwater to seep in, weakening the rock. According to this theory, such effects could lead to several precursory phenomena in the field, including a change in the velocity of seismic waves, and an increase in small, nearby tremors.

　　Researchers initially reported success in identifying these possible precursors, but subsequent analyses of their data proved disheartening. Seismic waves with unusual velocities were recorded before some earthquakes, but while the historical record confirms that most large earthquakes are preceded by minor tremors, these foreshocks indicate nothing about the magnitude of an impending quake and are indistinguishable from other minor tremors that occur without large earthquakes.

　　In the 1980s, some researchers turned their efforts from short-term to long-term prediction. Noting that earthquakes tend to occur repeatedly in certain regions, Lindh and Baker attempted to identify patterns of recurrence, or earthquake cycles, on which to base predictions. In a study of earthquake-prone sites along the San Andreas Fault, they determined that quakes occurred at intervals of approximately 22 years near one site and concluded that there was a 95 percent probability of an earthquake in that area by 1992. The earthquake did not occur within the time frame predicted, however.Evidence against the kind of regular earthquake cycles that Lindh and Baker tried to establish has come from a relatively new ♦field, paleoseismology. Paleoseismologists have unearthed and dated geological features such as fault scarps that were caused by earthquakes thousands of years ago. They have determined that the average interval between ten earthquakes that took place at one site along the San Andreas Fault in the past two millennia was 132 years, but individual intervals ranged greatly, from 44 to 332 years.♦

　　4、It can be inferred from the passage that one problem with using precursory phenomena to predict earthquakes is that minor tremors

　　A.typically occur some distance from the sites of the large earthquakes that follow them

　　B.are directly linked to the mechanisms that cause earthquakes

　　C.are difficult to distinguish from major tremors

　　D.have proven difficult to measure accurately

　　E.are not always followed by large earthquakes

　　

课程推荐》》更多

  GMAT直播VIP小班    GMAT直播精讲班    GMAT录播课
（VIP小班/全科班+1对1）（全科精讲/单项备考） （全科班/单项班）
 72.5课时 ￥18800 61课时 ￥7796 134课时 ￥14680

本文关键字: GMAT阅读题库 GMAT阅读题型

上一页 1 2 下一页

添加美研助教号 回复【GMAT】

获取2024GMAT考试最新复习资料

更多资料

添加美研助教号，
回复【GMAT】获取备考必看资料包

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加美研助教】，回复对应关键字领取学习资料。
更多>>
  • GMAT阅读复习的五大步骤 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读复习的五大步骤，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　1：原来

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读背景的培养 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读背景的培养，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　一、经济学

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读复习效率不高怎么办 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读复习效率不高怎么办，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　建

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读提高速度的根本方法 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读提高速度的根本方法，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　1

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读如何避免错误 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读如何避免错误，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　要避免GMA

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读技巧的提升 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读技巧的提升，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　GMAT阅读推

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读备考的注意事项 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读备考的注意事项，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　GMAT阅

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读怎么提高自己的能力 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读怎么提高自己的能力，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　建

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读长句子的备考 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读长句子的备考，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　1 首先

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

  • GMAT阅读水平怎么提高 　　

    　　新东方在线GMAT频道为大家带来GMAT阅读水平怎么提高，希望对大家GMAT备考有所帮助。更多精彩尽请关注新东方在线GMAT频道!　　下面就来

    来源 : 网络 2021-01-25 13:25:00 关键字 : GMAT阅读 GMAT

更多内容

添加美研助教号

回复【GMAT】获取备考必看资料包

新东方美研备考资料
GRE录播课（全科班/单项班） GMAT6-8人直播VIP小班 托福直播精讲班（30天/60天）
更多>>
更多惊喜>>
更多>>
更多资料
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10