Costas Synolakis says Japan's concrete sea walls were not built to handle such high waves. A tsunami wave can travel as fast as 800 kilometers per hour. To get to higher ground people would often have to travel for many kilometers. This can take more time than a fast traveling tsunami will permit. This is especially true in cases like Japan, where the center of the earthquake struck so close to the coastline. The tsunami waves followed almost immediately.

　　Experts say early warning systems will continue to be limited by these_facts until earthquakes and tsunamis can be predicted.

　　文章大意：本文是科技文。日本的地震预警系统位居世界前列，能在地震发生后的两分钟内提供信息。三分钟内能够提供有关地震强度和震中的信息。在海啸预警方面，日本是世界上准备工作做得最充分的国家之一，但这次他们没有预测出这次海啸的规模如此之大。

　　1．From the second paragraph we can infer that________.

　　A．Japan is an island country

　　B．the center of the earthquake is located in the northeastern coast

　　C．the meters in Japan have dropped behind

　　D．many measures have been carried out to reduce the consequences of earthquakes in Japan

　　答案：D　推理判断题。A说法正确，但不是本段的推理；B不是由第二段推理得出的，是第一段中明示的信息。根据“These meters provide information within two minutes of an earthquake happening.Information about the strength and the center of the earthquake can be learned within three minutes.”判断，C项推理错误。D项根据所列事实可以推断得出。

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