Passage
Everyone has heard of the San Andreas fault , which constantly threatens California and the West Coast with earthquakes. But how many people know about the equally serious New Madrid fault in Missouri? Between December of 1811 and February of 1812, three major earthquakes occurred, all centered around the town of New Madrid, Missouri, on the Mississippi River. Property damage was severe. Buildings in the area were almost destroyed. Whole forests fell at once, and huge cracks opened in the ground, allowing smell of sulfurto filter upward. The Mississippi River itself completely changed character, developing sudden rapids and whirlpools. Several times it changed its course, and once, according to some observers, it actually appeared to run backwards.Few people were killed in the New Marid earthquakes, probably simply because few people lived in the area in 1811; but the severity of the earthquakes are shown by the fact that the shock waves rang bells in church towers in Charleston, South Carolina, on the coast. Buildings shook in New York City, and clocks wer stopped in Washington, D.C. Scientists now know that America s two major faults are essentially different. The San Andreas is a horizontal boundary between two major land masses that are slowly moving in opposite directions. California earthquakes result when the movement of these two masses suddenly lurches forward. The New Madrid fault, on the other hand, is a vertical fault; at some points, possibly hundreds of millions of years ago, rock was pushed up toward the surface, probably by volcanoes under the surface. Suddenly, the volcanoes cooled and the rock collapsed, leaving huge cracks. Even now, the rock continues to settle downwards, and sudden sinking motions trigger earthquakes in the region. The fault itself, a large crack in this layer of rock, with dozens of other cracks that split off from it, extends from northeastArkansas through Missouri and into southern lllinois. Scientists who have studied the New Madrid fault say there have been numerous smaller quakes in the area since 1811; these smaller quakes indicate that larger ones are probably coming, but the scientists say have no method of predictingwhen a large earthquake will occur. 1. This passage is mainly about . A)the New Madrid fault in Missouri B)the San Andreas and the New Madrid faults C)the causes of faults D)current scientific knowledge about faults 2. The New Madrid fault is . A) a horizontal fault B) a vertical fault C) a more serious fault than the San Andreas fault D) responsible for forming the Mississippi River 3. We may conclude from the passage that . A) it is probably as dangerous to live in Missouri as in California B) the New Madrid fault will eventually develop a mountain range in Missouri C) California will become an island in future D) A big earthquake will occur to California soon 4. This passage implies that . A) horizontal faults are more dangerous than vertical faults. B) Vertical faults are more dangerous than horizontal faults C) Earthquakes occur only around fault areas D) California will break into pieces by an eventual earthquake 5. As used in the first sentence of the fourth paragraph, the word essentially means . A) greatly C) basically B) extremely D) necessarily Answer 1.B 2.B 3.A 4.C 5.C
体坛英语资讯:(Feature)Five things to look out for at FIFA Confederations Cup
2017年6月英语六级作文答案:试卷一【国内还是国外读大学】(文都教育版)
国内英语资讯:President Xi congratulates BRICS Games
罗马出台喷泉保护令 在附近吃喝将被罚
国际英语资讯:58 missing, presumed dead in London residential building fire: police
2017年6月英语六级作文答案:试卷三【读技校还是大学】(新东方版)
2017年6月英语六级作文真题:试卷三【读技校还是大学】
体坛英语资讯:Inter Milan join battle for Brazilian teenager Thiago Maia
2017年6月英语六级作文真题:试卷一【去国内还是国外读大学】
国际英语资讯:French President Macrons party wins landslide majority in parliamentary election runoff
国际英语资讯:Madagascar receives more than 4,000 tonnes of emergency food aid from China
2017年6月英语六级作文真题:试卷二【文科还是理科】
国内英语资讯:Spotlight: AIIB chief vows to expand cooperation with world for green development
国际英语资讯:Indonesia, Malaysia, Philippines launch joint patrol to prevent militants from crossing sea
国际英语资讯:Vehicle strikes pedestrians in London, several injured: police
2017年6月英语六级作文答案:试卷一【国内还是国外读大学】
我国将建设绿色金融改革创新试验区
国内英语资讯:China eyes closer BRICS cooperation
国际英语资讯:Russian warplanes kill 2 top IS commanders: defense ministry
国内英语资讯:Mainland official encourages cross-strait youth communication
男子开飞机佯装出事故 上演“惊悚”求婚
国内英语资讯:Commentary: China and Australias partnership of prosperity sets global example
国内英语资讯:Cross-Straits tech fair opens
体坛英语资讯:Liverpools two Premier League clubs at heart of citys bid to host Commonwealth Games
快乐的时刻 The Happy Moment
国内英语资讯:Chinese Vice Premier attends groundbreaking ceremony for traditional Chinese medicine center
全球三分之一人口超重 美国成年肥胖人数最多
如何对 “放弃” 说不!
国际英语资讯:7 bodies found following collision between U.S. destroyer, container ship off Japan: media
国内英语资讯:Feature: Chinese companies powering Ethiopias ambition to become Africas manufacturing h
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |