成才之路成才之路 英语英语路漫漫其修远兮路漫漫其修远兮 吾将上下而求索吾将上下而求索人教版人教版 选修选修6The power of natureUnit 5话话 题题 导导 入入The violence of natureWhat is a tornado?A tornado is a rotating (旋转的) column of air from a thunderstorm to the grounDThe most violent have winds of more than 400 kilometres per hourAlmost all of them occur in the US，in the area from Texas in the southeast to South Dakota in the north.Tornadoes can pick up cars, trains and even houses and put them down in the next street，or even in the next townThey can take the fur off the back of a cat and the feathers off a chickenThey can destroy houses, but leave the furniture inside exactly where it was.On average, there are 800 tornadoes in the US each year，causing about 80 deaths and over 1,500 injuriesThe worst tornado of all time occurred in 1925, affecting three US states: Missouri，Illinois and IndianABy the time it ended, about 700 people had been killed and more than 2,000 had been injuredThe worst hurricane disaster of all time occurred on the 8th September, 1900 in Galveston, Texas Winds of about 200 kilometres per hour and fivemetre high waves hit the cityThe disaster killed 6,000 people in a population of 37,000 and destroyed 3,600 buildings.佳句仿写1公共汽车被风雾所阻，因而耽搁了。(仿句)The bus was held up by the snowstorm, _ _ _ _.2到去年年底他们已建造了三艘船。(仿句)By last December three ships _ _ _ _ _.答案：1.thus causing the delay2.had been built by them