下面雅思为大家整理了一篇雅思阅读模拟题,这篇文章的主要内容是讨论了Mount St. Helens的火山喷发的时候的壮观景象。Mt St. Helens是位于美国西北角Oregon和Washington交接的一座活火山,爆发的景象让人叹为观止。
A The eruption in May 1980 of Mount St. Helens, Washington State, astounded the world with its violence. A gigantic explosion tore much of the volcanos summit to fragments; the energy released was equal to that of 500 of the nuclear bombs that destroyed Hiroshima in 1945.
B The event occurred along the boundary of two of the moving plates that make up the Earths crust. They meet at the junction of the North American continent and the Pacific Ocean. One edge of the continental North American plate over-rides the oceanic Juan de Fuca micro-plate, producing the volcanic Cascade range that includes Mounts Baker, Rainier and Hood, and Lassen Peak as well as Mount St. Helens.
C Until Mount St. Helens began to stir, only Mount Baker and Lassen Peak had shown signs of life during the 20th century. According to geological evidence found by the United States Geological Survey, there had been two major eruptions of Mount St. Helens in the recentpast: around 1900 B.C., and about A.D. 1500. Since the arrival of Europeans in the region, it had experienced a single period of spasmodic activity, between 1831 and 1857. Then, for more than a century, Mount St. Helens lay dormant.
【雅思阅读模拟题:The Spectacular Eruption of Mount St. Helens】相关文章:
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